Patent Publication Number: US-2023151941-A1

Title: Methods and apparatus for multi-segment illumination of spatial light modulators

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This patent application is a Continuation Application to U.S. patent application Ser. No. 17/565,688 filed Dec. 30, 2021, and claims the benefit of and priority to U.S. Provisional Patent Application Ser. No. 63/220,581 filed Jul. 12, 2021, which Applications are hereby incorporated herein by reference in their entireties. 
    
    
     TECHNICAL FIELD 
     This description relates generally to illumination of spatial light modulators, and more particularly to methods and apparatus for multi-segment illumination of spatial light modulators. 
     BACKGROUND 
     Vehicle headlights are becoming increasingly complex as new electronic systems, such as spatial light modulators (SLM), are being implemented. SLMs are commonly used to accurately modify and project light, which has led SLM technologies to become a popular method of light projection. 
     SUMMARY 
     An example apparatus includes an illumination source including a first illumination source segment and a second illumination source segment. The apparatus also includes driver circuitry coupled to the illumination source, the driver circuitry including a first driver coupled to the first illumination source segment, the first driver configured to produce a first drive signal to instruct the first illumination source segment to produce a first light having a first illumination intensity. The driver circuitry also includes a second driver coupled to the second illumination source segment, the second driver configured to produce a second drive signal to instruct the second illumination source segment to produce a second light having a second illumination intensity. 
     An example illumination source includes a first illumination source region along a first edge of the illumination source, the first illumination source region including first illumination source segments adapted to be coupled to a first driver. The illumination source also includes a second illumination source region along a second edge of the illumination source, the second edge opposite the first edge, the second illumination source region including second illumination source segments adapted to be coupled to a second driver. Additionally, the illumination source includes a third illumination source region between the first illumination source region and the second illumination source region, the third illumination source region along a third edge of the illumination source, the third illumination source region including third illumination source segments adapted to be coupled to a third driver. Also, the illumination source includes a fourth illumination source region between the first illumination source region and the second illumination source region, the fourth illumination source region along a fourth edge of the illumination source, the fourth edge opposite the third edge, the fourth illumination source region including fourth illumination source segments adapted to be coupled to a fourth driver. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a schematic diagram of an example vehicle including an example headlight and an example spatial light modulator. 
         FIG.  2 A  is an illustration of an example first multi-segment illumination source configured to illuminate the spatial light modulator of  FIG.  1   . 
         FIG.  2 B  is an illustration of an example second multi-segment illumination source configured to illuminate the spatial light modulator of  FIG.  1   . 
         FIG.  2 C  is an illustration of an example third multi-segment illumination source configured to illuminate the spatial light modulator of  FIG.  1   . 
         FIG.  2 D  is an illustration of the third multi-segment illumination source of  FIG.  2 C  showing grouped segments. 
         FIG.  3    is a schematic diagram of example driver circuitry configured to control the multi-segment illumination sources of  FIGS.  2 A- 2 D . 
         FIG.  4    is an illustration of an example gradient of light temperatures. 
         FIG.  5    is a timing diagram of an example operation of the driver circuitry of  FIG.  3   . 
         FIG.  6 A  is a table of an example operation of the driver circuitry of  FIG.  3    configured to illustrate the illumination and color temperature of the multi-segment illumination sources of  FIGS.  2 A- 2 D  based on a duty cycle. 
         FIG.  6 B  is a table of an example operation of the driver circuitry of  FIG.  3    configured to illustrate the illumination and color temperature of the multi-segment illumination sources of  FIGS.  2 A- 2 D  based on a current being supplied. 
         FIG.  7 A  is an illustration of a first example operation of the first multi-segment illumination source of  FIG.  2 A . 
         FIG.  7 B  is a table of example operating parameters which result in the first operation illustrated in  FIG.  7 A . 
         FIG.  8 A  is an illustration of a second example operation of the first multi-segment illumination source of  FIG.  2 A . 
         FIG.  8 B  is a table of example operating parameters which result in the second operation illustrated in  FIG.  8 A . 
         FIG.  9 A  is an illustration of a third example operation of the first multi-segment illumination source of  FIG.  2 A . 
         FIG.  9 B  is a table of example operating parameters which result in the third operation illustrated in  FIG.  9 A . 
         FIG.  10    is a flowchart representative of example machine readable instructions and/or example operations that may be executed by example processor circuitry to implement color temperature correction using the driver circuitry of  FIG.  3   . 
     
    
    
     The same reference numbers or other reference designators are used in the drawings to designate the same or similar (functionally and/or structurally) features. 
     DETAILED DESCRIPTION 
     The drawings are not necessarily to scale. Generally, the same reference numbers in the drawing(s) and this description refer to the same or like parts. Although the drawings show layers and regions with clean lines and boundaries, some or all of these lines and/or boundaries may be idealized. In reality, the boundaries and/or lines may be unobservable, blended and/or irregular. 
     Automotive vehicles (e.g., cars, all-terrain vehicles (ATVs), industrial motor vehicles, sedans, sport utility vehicles (SUVs), trucks, vans, etc.), such as internal combustion engine vehicles, hybrid-electric vehicles (HEVs), electric vehicles (EVs), etc., may benefit from beam steering headlights to control the intensity and temperature of light being projected from the headlights. For example, a beam steering headlight may adjust the brightness of a portion of the area illuminated by the beam steering headlight to operate in a high beam mode. Beam steering headlights may be illuminate based on an intended projection 
     An example beam steering headlight may include a spatial light modulator (SLM) (e.g., a digital micromirror device) optically coupled to an illumination source, such that the SLM may be used to reflect different portions of the light supplied by the illumination source. For example, a beam steering headlight includes an SLM to reflect portions of light away from a field of view of the beam steering headlight, such that the portions of light do not illuminate a corresponding portion of the field of view of the beam steering headlight. An SLM may modulate light away from the field of view to generate portions of the field of view that are not illuminated, which decreases the efficiency of the SLM application. In some applications, such as vehicle headlights, the inclusion of an SLM decreases the overall efficiency, increases the cost, and increases integration complexity of such vehicle headlights, which may limit the application of SLM technologies. 
     Examples described herein include headlights which include a multi-segment illumination source optically coupled to an SLM to increase the efficiency and control of light being projected by the headlight. The multi-segment illumination source includes a plurality of illumination sources, which may be referred to as segments, to illuminate different portions of the SLM based on driver circuitry. In some described examples, the multi-segment illumination source includes driver circuitry electrically coupled to a plurality of segments of the multi-segment illumination source to decrease integration complexity. For example, a beam steering headlight may use the same driver circuitry to control one or more light emitting diode (LED) segments comprising a multi-segment illumination source. The driver circuitry may disable one or more segments included in the multi-segment illumination source, such that the SLM does not need to reflect light away from the field of view of the headlight. 
     In some described examples, the brightness and color temperature of each segment included in the multi-segment illumination source may be controlled using a pulse width modulation (PWM) signal. For example, a first LED segment operating at 3 amps with a 100 percent duty cycle segment has approximately the same color temperature as a second LED segment operating at 3 amps with a 60 percent duty cycle. In such an example, the first LED segment would be brighter than the second LED segment as a result of a lower current density, however both segments would have the same color temperature. The headlight described herein is a beam steering headlight that allows for portions of the field of view of the beam steering headlight to be efficiently illuminated to different intensities without altering the color temperature. 
       FIG.  1    is a schematic diagram of an example vehicle  100  including an example headlight  105 . In the example of  FIG.  1   , the vehicle  100  may include a plurality of headlights, such that the headlight  105  is a first headlight and the vehicle  100  further including a second headlight (not illustrated) configured similar to the headlight  105 . In the example of  FIG.  1   , the vehicle  100  may be an internal combustion engine vehicle (e.g., an ATV, an industrial motor vehicle, a sedan, an SUV, a truck, a van, etc.), an HEV, an electric vehicle, etc. The vehicle  100  may include additional components (not illustrated). The headlight  105  includes an example spatial light modulator  110 , an example projection optics  115 , an example heat sink  120 , an example multi-segment illumination source  125 , example driver circuitry  130 , and an example controller  135 . The headlight  105  may supply light from the multi-segment illumination source  125  to the projection optics  115  based on the spatial light modulator  110 . 
     In the example of  FIG.  1   , the spatial light modulator  110  is optically coupled to the projection optics  115 , to the heat sink  120 , and to the multi-segment illumination source  125 . The spatial light modulator  110  is an advanced light control technology which uses spatial light modulation to increase the versatility of light patterns, such that the SLM  110  may supply modulated light. The spatial light modulator  110  may be a digital micromirror device (DMD) which uses mirrors to reflect light towards an optical output (e.g., the projection optics  115 ) to generate illuminated portions of a field of view. The spatial light modulator  110  is electrically coupled to the controller  135 . The spatial light modulator  110  may reflect light received from the multi-segment illumination source  125 . The spatial light modulator  110  may supply light to either the projection optics  115  or the heat sink  120 . For example, the spatial light modulator  110  illuminates the field of view of the headlight  105  as a result of the spatial light modulator  110  reflecting light from the multi-segment illumination source  125  to the projection optics  115 . Alternatively, the spatial light modulator  110  may not illuminate a portion of the field of view as a result of reflecting the portion of the light corresponding to the portion of the field of view to the heat sink  120 . 
     The projection optics  115  is optically coupled to the spatial light modulator  110 . The projection optics  115  include a headlight cover, such that the light from the spatial light modulator  110  may illuminate an intended field of view. The projection optics  115  may project light supplied by the spatial light modulator  110 . The projection optics  115  determines a field of view of the headlight  105 , such that modifying the projection optics  115  may alter the field of view of the headlight  105 . The field of view is the area in which the headlight  105  may illuminate using the spatial light modulator  110 . The projection optics  115  may include at least one lens, transparent plastic, transparent glass, projection lens, etc. 
     The heat sink  120  is optically coupled to the spatial light modulator  110 . The heat sink  120  receives light reflected by the spatial light modulator  110 , such that the light projected to the heat sink  120  is not supplied to the projection optics  115 . The heat sink  120  safely dissipates the light supplied by the spatial light modulator  110  to the heat sink  120 , such that any energy (e.g., heat) produced by the light may be safely dissipated. The heat sink  120  may be a portion of the headlight  105  and/or vehicle  100  capable of dissipating heat, such as a piece of metal included in the vehicle  100 , wherein the surface area in contact with the light is enough to dissipate the light reflected towards the heat sink  120 . Alternatively, the heat sink  120  may be manufactured out of a metal or another material with a high thermal resistance, such that any heat generated by the light may be dissipated without effecting the operation of the headlight  105 . 
     The multi-segment illumination source  125  is optically coupled to the spatial light modulator  110 . The multi-segment illumination source  125  is electrically coupled to the driver circuitry  130 . The multi-segment illumination source  125  includes a plurality of LED segments. The multi-segment illumination source  125  may be controlled by the driver circuitry  130 , such that the individual segments may be individually controlled. For example, the multi-segment illumination source  125  may include three LED segments, such that the one or more of the LED segments may be enabled. Alternatively, the multi-segment illumination source  125  may be include segments such as an organic light emitting diode (OLED), a liquid crystal display (LCD), a cathode ray tube (CRT) display, an in-place switching (IPS) display, etc. 
     The driver circuitry  130  is electrically coupled between the multi-segment illumination source  125  and the controller  135 . The driver circuitry  130  may supply power to the multi-segment illumination source  125 . The driver circuitry  130  individually controls each segment of the multi-segment illumination source  125 . For example, the driver circuitry  130  may include three drivers to support a multi-segment illumination source  125  comprised of three segments. Alternatively, the driver circuitry  130  may have one or more drivers control one or more segments of the multi-segment illumination source  125 , such that integration complexity and cost are decreased. 
     The controller  135  is electrically coupled to the spatial light modulator  110  and to the driver circuitry  130 . The controller  135  controls the spatial light modulator  110 . For example, the controller  135  may configure the spatial light modulator  110  to reflect half of the light supplied by a segment of the multi-segment illumination source  125  towards the heat sink  120  to generate an area with a reduced illumination. The controller  135  is configured to control the driver circuitry  130 . For example, the controller  135  may enable a driver corresponding to a single segment of the multi-segment illumination source  125  to illuminate a portion of the spatial light modulator  110 . In such an example, the controller  135  can provide a pulse width modulated (PWM) signal to the driver circuitry  130 , such that the illumination of an enabled segment of the multi-segment illumination source  125  is reduced without effecting the color temperature of the light. 
     In example operation, the controller  135  may enable the driver circuitry  130  to supply power to the multi-segment illumination source  125 , such that some segments comprising the multi-segment illumination source  125  are enabled. The controller  135  may control the color temperature and illumination intensity based on a duty cycle of one or more PWM signals electrically coupled to the driver circuitry  130 . The controller  135  sets the spatial light modulator  110  to reflect light from the multi-segment illumination source  125 . The spatial light modulator  110  may reflect the light supplied by the multi-segment illumination source  125 , such that the light is provided to the projection optics  115  and/or the heat sink  120 . The spatial light modulator  110  may reflect portions of the light supplied by the multi-segment illumination source  125  to increase or decrease the illumination of the field of view of the projection optics  115 . 
     Advantageously, the power consumption of the headlight  105  is decreased as a result of the segments of the multi-segment illumination source  125  being individually controlled by the driver circuitry  130 . Advantageously, the light supplied to the projection optics  115  by the spatial light modulator  110  corresponds to portions of the field of view, such that the illumination of individual portions of the field of view is achieved. 
       FIG.  2 A  is an illustration of an example first multi-segment illumination source  202  configured for use in the headlight  105  of  FIG.  1   . The first multi-segment illumination source  202  is an example of multi-segment illumination source  125  illustrated in  FIG.  1   . In the example of  FIG.  2 A , the first multi-segment illumination source  202  includes an example first segment  204 , a second segment  206 , and a third segment  208 . The first multi-segment illumination source  202  may be electrically coupled to the driver circuitry  130  of  FIG.  1   . The field of view of the headlight  105  is corresponds to the area wherein the spatial light modulator  110  may illuminate based on the light supplied by the multi-segment illumination source  125 . The first multi-segment illumination source  202  divides the field of view of the headlight  105  into three vertical segments. The segments  204 - 208  each represent a third of the field of view of the headlight  105 , such that the width of the field of view is divided into three equal portions each corresponding to one of the segments  204 - 208 . The first multi-segment illumination source  202  may supply light to the spatial light modulator  110  of  FIG.  1    as a result of one or more of the segments  204 - 208  being enabled. Advantageously, the first multi-segment illumination source  202  can increase the efficiency of the headlight  105  by disabling one or more of the segments  204 - 208  corresponding to a portion of the field of view not being illuminated. For example, the first multi-segment illumination source  202  may disable the first segment  204  when projecting an image onto the corresponding vertical portion of a road, within the field of view, to increase the visibility of the image projected onto the road by the headlight  105 . Alternatively, the first multi-segment illumination source  202  may be configured to include more than three segments, such that the first multi-segment illumination source  202  may include more than three vertical segments, for example four vertical segments, or fewer than three vertical segments, for example two vertical segments. 
     The segments  204 - 208  contain a plurality of LEDs (not illustrated). Alternatively, the segments  204 - 208  may be referred to as an LED array, LED matrix, etc. The first segment  204  corresponds to a vertical third of the field of view on the left most side of the first multi-segment illumination source  202 . The second segment  206  corresponds to a vertical third of the field of view in the center of the first multi-segment illumination source  202 , such that the first segment  204  is on the left side of the second segment  206 . The third segment  208  corresponds to a vertical third of the field of view on the right most side of the first multi-segment illumination source  202 , such that the third segment  208  is on the right side of the second segment  206 . 
     The segments  204 - 208  are configured to be electrically coupled to the driver circuitry  130 , such that the color temperature and intensity may be controlled for the corresponding portion of the field of view. For example, the controller  135  may supply a plurality of pulse width modulated (PWM) signals to the driver circuitry  130  to enable the color temperature and intensity of the segments  204 - 208  to be individually controlled based on a duty cycle of the PWM signal provided to the driver circuitry  130  for each of the segments  202 - 208 . Advantageously, the efficiency of the headlight  105  is increased as a result of the segments  202 - 208  being able to be disabled when the corresponding portion of the field of view is not illuminated. 
       FIG.  2 B  is an illustration of an example second multi-segment illumination source  210  configured for use in the headlight  105  of  FIG.  1   . The second multi-segment illumination source  210  is an example of multi-segment illumination source  125  illustrated in  FIG.  1   . In the example of  FIG.  2 B , the second multi-segment illumination source  210  includes a first segment  212 , a second segment  214 , and a third segment  216 . The second multi-segment illumination source  210  may be electrically coupled to the driver circuitry  130  of  FIG.  1   . The field of view of the headlight  105  is corresponds to the area wherein the spatial light modulator  110  may illuminate based on the light supplied by the multi-segment illumination source  125 . The second multi-segment illumination source  210  is configured to divide the field of view of the headlight  105  into three horizontal segments as a result of dividing the second multi-segment illumination source  210  into three equal segments. The second multi-segment illumination source  210  is configured to supply light to the spatial light modulator  110  in three horizontal portions corresponding to a horizontal portion of the field of view, such that a height of the second multi-segment illumination source  202  is divided into three equal portions each corresponding to one of the segments  212 - 216 . The second multi-segment illumination source  210  may supply light to the spatial light modulator  110  of  FIG.  1    as a result of one or more of the segments  212 - 216  being enabled. Advantageously, the second multi-segment illumination source  210  can increase the efficiency of the headlight  105  by disabling one or more of the segments  212 - 216  corresponding to a portion of the field of view not being illuminated. For example, the first segment  212  may be disabled by the driver circuitry  130  during low beam operation of the headlight  105 , such that the headlight  105  illuminates only the bottom two thirds of the field of view. Alternatively, the second multi-segment illumination source  210  may be configured to include more than three horizontal segments, such that the second multi-segment illumination source  210  may include more than three horizontal segments, for example four horizontal segments, or fewer than three horizontal segments, for example two segments. 
     The segments  212 - 216  contain a plurality of LEDs (not illustrated). Alternatively, the segments  212 - 216  may be referred to as an LED array, LED matrix, etc. The first segment  212  corresponds to a horizontal third of the field of view on the top of the second multi-segment illumination source  210 . The second segment  214  corresponds to a horizontal third of the field of view in the center of the second multi-segment illumination source  210 , such that the first segment  212  is above the second segment  214 . The third segment  216  corresponds to a horizontal third of the field of view on the bottom of the second multi-segment illumination source  210 , such that the third segment  216  is below the second segment  214 . 
     The segments  212 - 216  are configured to be electrically coupled to the driver circuitry  130 , such that the color temperature and intensity may be controlled for the corresponding portion of the field of view. Advantageously, the efficiency of the headlight  105  is increased as a result of the segments  212 - 216  being able to be disabled when the corresponding portion of the field of view is not illuminated. 
       FIG.  2 C  is a first illustration of a third multi-segment illumination source  218  configured for use in the headlight  105  of  FIG.  1   . The third multi-segment illumination source  218  is an example of multi-segment illumination source  125  illustrated in  FIG.  1   . In the example of  FIG.  2 C , the third multi-segment illumination source  218  includes a first segment  220 , a second segment  222 , a third segment  224 , a fourth segment  226 , a fifth segment  228 , a sixth segment  230 , a seventh segment  232 , an eighth segment  234 , a ninth segment  236 , a tenth segment  238 , an eleventh segment  240 , and a twelfth segment  242 . The third multi-segment illumination source  218  may be electrically coupled to the driver circuitry  130  of  FIG.  1   . The third multi-segment illumination source  218  is configured to divide the field of view of the headlight  105  into twelve equally sized segments, such that the horizontal length of the third multi-segment illumination source  218  is divided into 4 equal parts and the vertical length of the third multi-segment illumination source  218  is divided into three equal parts. The third multi-segment illumination source  218  may supply light to the spatial light modulator  110  of  FIG.  1    as a result of one or more of the segments  220 - 242  being enabled. Advantageously, the third multi-segment illumination source  218  can increase the efficiency of the headlight  105  by disabling one or more of the segments  220 - 242  corresponding to a portion of the field of view not being illuminated. Alternatively, the third multi-segment illumination source  218  may be configured to include a plurality of segments, such that the third multi-segment illumination source  218  is comprised of a plurality of segments. 
     The segments  220 - 242  are comprised of a plurality of LEDs (not illustrated). Alternatively, the segments  220 - 242  may be referred to as an LED array, LED matrix, etc. The first segment  220  corresponds to a twelfth of the field of view in the top left of the third multi-segment illumination source  218 . The second segment  222  corresponds to a twelfth of the field of view to the right of the first segment  220  on the top of the third multi-segment illumination source  218 , such that the first segment  220  is horizontal to the second segment  222 . The third segment  224  corresponds to a twelfth of the field of view to the right of the second segment  222  on top of the third multi-segment illumination source  218 , such that the third segment  224  is horizontal to the second segment  222 . The fourth segment  226  corresponds to a twelfth of the field of view to the right of the third segment  224  on the top of the third multi-segment illumination source  218 , such that the third segment  224  is horizontal to the fourth segment  226 . The fifth segment  228  corresponds to a twelfth of the field of view vertically below the first segment  220 . The sixth segment  230  corresponds to a twelfth of the field of view to the right of the fifth segment  228  and below the second segment  222 , such that the fifth segment  228  is horizontal to the sixth segment  230 . The seventh segment  232  corresponds to a twelfth of the field of view to the right of the sixth segment  230  and below the third segment  224 , such that the seventh segment  232  is horizontal to the sixth segment  230 . The eighth segment  234  corresponds to a twelfth of the field of view to the right of the seventh segment  232  and below the fourth segment  226 , such that the seventh segment  232  is horizontal to the eighth segment  234 . The ninth segment  236  corresponds to a twelfth of the field of view vertically below the fifth segment  228 . The tenth segment  238  corresponds to a twelfth of the field of view to the right of the ninth segment  236  and below the sixth segment  230 , such that the ninth segment  236  is horizontal to the tenth segment  238 . The eleventh segment  240  corresponds to a twelfth of the field of view to the right of the tenth segment  238  and below the seventh segment  232 , such that the eleventh segment  240  is horizontal to the tenth segment  238 . The twelfth segment  242  corresponds to a twelfth of the field of view to the right of the eleventh segment  240  and below the eighth segment  234 , such that the eleventh segment  240  is horizontal to the twelfth segment  242 . 
     The segments  220 - 242  are configured to be electrically coupled to the driver circuitry  130 , such that the color temperature and intensity may be controlled for the corresponding portion of the field of view. Advantageously, the efficiency of the headlight  105  is increased as a result of the segments  220 - 242  being able to be disabled when the corresponding portion of the field of view is not illuminated. 
       FIG.  2 D  is a second illustration of the fourth multi-segment illumination source  243 . The fourth multi-segment illumination source  243  is an example of multi-segment illumination source  125  illustrated in  FIG.  1   . In the fourth multi-segment illumination source  243 , some of the segments are grouped together. In the example of  FIG.  2 D , the fourth multi-segment illumination source  243  includes the first segment  220 , the second segment  222 , the third segment  224 , the fourth segment  226 , the fifth segment  228 , the sixth segment  230 , the seventh segment  232 , the eighth segment  234 , the ninth segment  236 , the tenth segment  238 , the eleventh segment  240 , the twelfth segment  242 , an example first region  244 , a second region  246 , a third region  248 , and a fourth region  250 . 
     In the example of  FIG.  2 D , the first region  244  includes the segments  220 ,  228 , and  236 . The first region  244  corresponds to a vertical quarter of the field of view on the left side of the fourth multi-segment illumination source  243 , such that the first region  244  may be a left vertical segment. The second region  246  includes the segments  226 ,  234 , and  242 . The second region  246  corresponds to a vertical quarter of the field of view on the right side of the fourth multi-segment illumination source  243 , such that the second region  246  may be a right vertical segment. The third region  248  includes the segments  222  and  224 . The third region  248  corresponds to a horizontal third of the field of view between the regions  244  and  246  and on the top of the fourth multi-segment illumination source  243 , such that the third region  248  may be a top center horizontal segment. The fourth region  250  includes the segments  230 ,  232 ,  238 , and  240 . The fourth region  250  corresponds to a third of the field of view between the regions  244  and  246  and on the top of the fourth multi-segment illumination source  243 , such that the fourth region  250  may be a bottom center horizontal segment. 
     The regions  244 - 250  are coupled to the driver circuitry  130 , such that the color temperature and intensity of the individual segments comprising the region may be controlled by a single driver. In example operation, the fourth multi-segment illumination source  243  may be configured for low beam operation by enabling the regions  244 ,  246 , and  250 , such that the regions  244  and  246  are supplied a current density of approximately 1 amp (A) and the fourth region  250  is supplied a current density of approximately four amps (A). Advantageously, low beam operation enables the lower and side regions of the field of view to be illuminated more than the top portion, such that oncoming traffic may be illuminated less than the rest of the field of view. In example operation, the fourth multi-segment illumination source  243  may be configured for beam steering operation, wherein the left portion of the field of view is illuminated at a lower intensity than the right portion as a result of the first region  244  being supplied a current density approximately equal to one amp (A), the second region  246  being supplied a current density approximately equal to five amps (A), and the regions  248  and  250  being supplied a current density approximately equal to three amps (A). Advantageously, beam steering operation of the headlight  105  enables a portion of the field of view to be illuminated more than other portions, such that an image may be projected in the portions with reduced illumination. In example operation, the fourth multi-segment illumination source  243  may be configured for high beam operation as a result of the regions  244  and  246  being supplied one amp (A), the third region  248  being supplied a current density of approximately three amps (A), and the fourth region  250  being supplied a current density approximately five amps (A). Advantageously, high beam operation of the headlight  105  enables the regions  248  and  250  to be illuminated more than the regions  244  and  246 , such that the middle portion of the field of view may illuminate more of a road. Advantageously, the regions  244 - 250  reduces the number of individual drivers and reduces integration complexity. 
       FIG.  3    is a schematic diagram of the driver circuitry  130  of  FIG.  1    configured to control the first multi-segment illumination source  202  of  FIG.  2 A . In the example of  FIG.  3   , the driver circuitry  130  includes an example first driver  302 , a second driver  304 , and a third driver  306 . Alternatively, the driver circuitry  130  may include fewer than three drivers or more than three drivers. Alternatively, the driver circuitry  130  may be configured to control a plurality of segments and/or regions comprising a multi-segment illumination source. For example, the fourth multi-segment illumination source  243  may be configured to be controlled by four drivers, such that there is one driver for each of the regions  244 - 250 . In such an example, the fourth multi-segment illumination source  243  may be configured to be controlled by twelve drivers, such that each of the segments  220 - 242  are individually controlled. Advantageously, the integration complexity of the headlight  105  is decreased as a result of the driver circuitry  130  being configured to include a plurality of drivers control a region (e.g., the regions  244 - 250 ). The driver circuitry  130  may be configured to include a plurality of drivers corresponding to the number of segments and/or regions of a multi-segment illumination source. 
     In the example of  FIG.  3   , the first driver  302  includes an example first pulse width modulation terminal (PWM_ 1 )  308 , an example first light emitting diode enable terminal (LED_EN_ 1 )  310 , an example first LED driver  312 , an example first shunt enable terminal (SHUNT_EN_ 1 )  314 , an example first shunt  316 , and an example first LED output terminal (LED_OUT_ 1 ) 318 . The first driver  302  is configured to supply power to one or more segments of a multi-segment illumination source (e.g., the first multi-segment illumination source  202  of  FIG.  2 A , the second multi-segment illumination source  210  of  FIG.  2 B , etc.) based on the terminals  308 ,  310 , and  314 . 
     The first LED driver  312  is electrically coupled to the first PWM terminal  308 , the first LED enable terminal  310 , the first shunt  316 , and the first LED output terminal  318 . The first PWM terminal  308  may be coupled to a PWM input supplied by the controller  135  of  FIG.  1   . An LED driver output of the first LED driver  312  is coupled to the first LED output terminal  318 . The first LED driver  312  determines a magnitude of power to supply to the first LED output terminal  318  based on a duty cycle of the PWM signal electrically coupled to the first PWM terminal  308 . For example, the first LED driver  312  may supply 50 percent of the maximum power output to the first LED output terminal  318  as a result of a 50 percent duty cycle on the first PWM terminal  308 . The first LED driver  312  supplies power to the first LED output terminal  318  as a result of the first LED enable terminal  310  being asserted. For example, the first LED driver  312  supplies power to the first LED output terminal  318  as a result of the first LED enable terminal  310  being asserted. Alternatively, the first LED driver  312  may supply power to the first LED output terminal  318  to cause a segment to produce a light as a result of the first LED enable terminal  310  not being asserted. 
     The first shunt  316  is electrically coupled to the first LED driver  312 , the first shunt enable terminal  314 , and the first LED output terminal  318 . A shunt output of the first shunt  316  is coupled to the first LED output terminal  318 . The first shunt  316  is configured to prevent the first LED driver  312  from supplying power to the first LED output terminal  318  based on the first shunt enable terminal  314 . For example, the first shunt  316  prevents power from being supplied to the first LED output as a result of the first shunt enable terminal  314  being asserted. Alternatively, the first shunt  316  may be configured to allow power to be supplied to the first LED output terminal  318  as a result of the first shunt enable terminal  314  being asserted. 
     In the example of  FIG.  3   , the second driver  304  includes a second PWM terminal (PWM_ 2 )  320 , a second LED enable terminal (LED_EN_ 2 )  322 , a second LED driver  324 , a second shunt enable terminal (SHUNT_EN_ 2 )  326 , a second shunt  328 , and a second LED output terminal (LED_OUT_ 2 )  330 . The second driver  304  is configured to supply power to one or more segments of a multi-segment illumination source (e.g., the first multi-segment illumination source  202 , the second multi-segment illumination source  210 , etc.) based on the terminals  320 ,  322 , and  326 . 
     The second LED driver  324  is electrically coupled to the second PWM terminal  320 , the second LED enable terminal  322 , the second shunt  328 , and the second LED output terminal  330 . The second PWM terminal  320  may be coupled to a PWM input supplied by the controller  135 . An LED driver output of the second LED driver  324  is coupled to the second LED output terminal  330 . The second LED driver  324  is configured to determine a magnitude of power to supply to the second LED output terminal  330  based on a duty cycle of the PWM signal electrically coupled to the second PWM terminal  320 . For example, the second LED driver  324  may supply 50 percent of the maximum power output to the second LED output terminal  330  as a result of a 50 percent duty cycle on the second PWM terminal  320 . The second LED driver  324  is configured to supply power to the second LED output terminal  330  as a result of the second LED enable terminal  322  being asserted. For example, the second LED driver  324  supplies power to the second LED output terminal  330  as a result of the second LED enable terminal  322  being asserted. Alternatively, the second LED driver  324  may supply power to the second LED output terminal  330  to cause a segment to produce a light of a color temperature and brightness as a result of the second LED enable terminal  322  not being asserted. 
     The second shunt  328  is electrically coupled to the second LED driver  324 , the second shunt enable terminal  326 , and the second LED output terminal  330 . A shunt output of the second shunt  328  is coupled to the second LED output terminal  330 . The second shunt  328  is configured to prevent the second LED driver  324  from supplying power to the second LED output terminal  330  based on the second shunt enable terminal  326 . For example, the second shunt  328  prevents power from being supplied to the first LED output as a result of the second shunt enable terminal  326  being asserted. Alternatively, the second shunt  328  may allow power to be supplied to the second LED output terminal  330  as a result of the second shunt enable terminal  326  being asserted. 
     In the example of  FIG.  3   , the third driver  306  includes a third PWM terminal (PWM_ 3 )  332 , a third LED enable terminal (LED_EN_ 3 )  334 , a third LED driver  336 , a third shunt enable terminal (SHUNT_EN_ 3 )  338 , a third shunt  340 , and a third LED output terminal (LED_OUT_ 3 )  342 . The third driver  306  is configured to supply power to one or more segments of a multi-segment illumination source (e.g., the first multi-segment illumination source  202 , the third multi-segment illumination source  218 , etc.) based on the terminals  332 ,  334 , and  338 . 
     The third LED driver  336  is electrically coupled to the third PWM terminal  332 , the third LED enable terminal  334 , the third shunt  340 , and the third LED output terminal  342 . The third PWM terminal  332  may be coupled to a PWM input supplied by the controller  135 . The third LED driver  336  is configured to determine a magnitude of power to supply to the third LED output terminal  342  based on a duty cycle of the PWM signal electrically coupled to the third PWM terminal  332 . For example, the third LED driver  336  may supply 50 percent of the maximum power output to the third LED output terminal  342  as a result of a 50 percent duty cycle on the third PWM terminal  332 . The third LED driver  336  is configured to supply power to the third LED output terminal  342  as a result of the third LED enable terminal  334  being asserted. For example, the third LED driver  336  supplies power to the third LED output terminal  342  as a result of the third LED enable terminal  334  being asserted. Alternatively, the third LED driver  336  may supply power to the third LED output terminal  342  to cause a segment to produce a light of a color temperature and brightness as a result of the third LED enable terminal  334  not being asserted. 
     The third shunt  340  is electrically coupled to the third LED driver  336 , the third shunt enable terminal  338 , and the third LED output terminal  342 . A shunt output of the third shunt  340  is coupled to the third LED output terminal  342 . The third shunt  340  is configured to prevent the third LED driver  336  from supplying power to the third LED output terminal  342  based on the third shunt enable terminal  338 . For example, the third shunt  340  prevents power from being supplied to the first LED output as a result of the third shunt enable terminal  338  being asserted. Alternatively, the third shunt  340  may be configured to allow power to be supplied to the third LED output terminal  342  as a result of the third shunt enable terminal  338  being asserted. 
     In example of  FIG.  3   , the driver circuitry  130  is configured to individually drive three LED segments, such as the segments  204 - 208  of the first multi-segment illumination source  202 . Alternatively, the driver circuitry  130  may include more than three drivers to drive more than three segments. The drivers  302 - 306  may be configured to supply power to a plurality of segments, such as to drive a region (e.g., the regions  244 - 250  of  FIG.  2 D ). Alternatively, the driver circuitry  130  may be configured to include twelve drivers, such that each of the segments  220 - 242  of  FIGS.  2 C and  2 D  may be individually controlled. Advantageously, the driver circuitry  130  increases the power efficiency of the headlight  105  as a result of being able to individually control each segment of the multi-segment illumination source  125  of  FIG.  1   . For example, low beam operation of the headlight  105  configured to include the fourth multi-segment illumination source  243  of  FIG.  2 D  is more efficient than a normal illumination source as a result of the controller  135  disabling the third region  248  opposed the spatial light modulator having to reflect the light corresponding to the not illuminated portions to dissipate the light. 
       FIG.  4    is an illustration of an example gradient of color temperatures  410 . The gradient of color temperatures  410  includes an example maximum color temperature  420  and a minimum color temperature  430 . The gradient of color temperatures  410  is configured to illustrate the potential color temperatures of an illumination source (e.g., the multi-segment illumination source  125  of  FIG.  1   ). 
     The maximum color temperature  420  represents light of a color temperature greater than or equal to 9000 Kelvin (K), such that the light has a blue tint. The minimum color temperature  430  represents light of a color temperature less than or equal to 1500 Kelvin (K), such that the light has an orange tint. The gradient of color temperatures  410  illustrates that the lower the color temperature the greater the amount of orange tint applied to the light, such light may be referred to as warm white. The gradient of color temperatures  410  illustrates that the higher the color temperature the greater the amount of blue tint applied to the light, such light may be referred to as bright white. The gradient of color temperature  410  illustrates that the light approximately between 3000 Kelvin and 6500 Kelvin exhibit minimal orange and blue tint, such that the light appears as white. 
       FIG.  5    is a timing diagram of an example operation of the driver circuitry  130  of  FIGS.  1  and  3    configured to control the first multi-segment illumination source  202  of  FIG.  2 A , as well as control of the spatial light modulator  110  of  FIG.  1   . In the example of  FIG.  5   , the timing diagram includes an example reset  505 , an example first LED enable (LED_EN_ 1 )  510 , an example first shunt enable (SHUNT_EN_ 1 )  515 , an example first PWM signal (PWM_ 1 )  520 , an example first LED output (LED_OUT_ 1 )  525 , a second LED enable (LED_EN_ 2 )  530 , a second shunt enable (SHUNT_EN_ 2 )  535 , a second PWM signal (PWM_ 2 )  540 , a second LED output (LED_OUT_ 2 )  545 , a third LED enable (LED_EN_ 3 )  550 , a third shunt enable (SHUNT_EN_ 3 )  555 , a third PWM signal (PWM_ 3 )  560 , and a third LED output (LED_OUT_ 3 )  565 . The timing diagram is configured to show example operation of the driver circuitry  130  to control the color temperature and intensity of the segments  204 - 208  of  FIG.  2 A , such that the color temperature of each of the segments  204 - 208  are approximately equal. Alternatively, the timing diagram may be configured to include represent the operation of a plurality of regions (e.g., the regions  244 - 250  of  FIG.  2 D ), such that the color temperature of the regions are approximately equal. 
     In the example of  FIG.  4   , the reset  505  is configured to represent a reset operation of the spatial light modulator  110  of  FIG.  1   . The reset  505  may be configured to represent the reset operation as a logic high (HI). For example, the logic high signal is a signal (e.g., a voltage, a current, etc.) representative of a digital one (e.g., a digital ‘1,’ a logic ‘1,’ or a digital high), such as a voltage of 2.2V, 3.3V, 5V, etc. In some examples, a logic low signal is a signal representative of a digital zero (e.g., a digital ‘0,’ a logic ‘0,’ or a digital low), such as a common potential (e.g., ground). The reset  505  may be configured to represent the reset operation as disabled as a logic low (LO). For example, the spatial light modulator  110  may be configured to load in values stored in memory coupled to the controller  135  of  FIG.  1    as a result of the reset  505  being a logic high, such that the spatial light modulator  110  is modified to reflect a mode of operation (e.g., low beam, high beam, or beam steering) when the reset  505  transitions to a logic low. In such an example, the reset  505  may be set to a logic high as a result of the headlight  105  switching between low beam and high beam operation. In such an example, the reset  505  may be configured to represent the spatial light modulator  110  being latched until the reset  505  returns to a logic low, such that the field of view of the headlight  105  may be illuminated as a result of the reset  505  being set to a logic low. 
     The first LED enable  510  represents the signal at the first LED enable terminal  310  of  FIG.  3   . The first LED enable  510  may be configured to represent the first LED enable terminal  310  being asserted as a logic high, when LED_EN=1. The first LED enable  510  may be configured to represent the first LED enable terminal  310  being disabled as a logic low when LED_EN=0. For example, the controller  135  of  FIG.  1    asserts the first LED enable  510  to enable the first LED driver  312  to supply power to the first LED output terminal  318  of  FIG.  3   . In such an example, the first LED enable  510  may be deasserted by the controller  135  to disable the first LED driver  312  from supplying power to a segment and/or region. 
     The first shunt enable  515  represents the signal at the first shunt enable terminal  314  of  FIG.  3   . The first shunt enable  515  may be configured to represent the first shunt enable terminal  314  being asserted as a logic high, depicted by SHUNT=HIGH, such that the first shunt  316  of  FIG.  3    enables the first LED driver  312  to supply power to the first LED output terminal  318 . The first shunt enable  515  may be configured to represent the first shunt enable terminal  314  being disabled as a logic low, depicted by SHUNT=LOW, such that the first shunt  316  disables the first driver  302  of  FIG.  3   . For example, the controller  135  of  FIG.  1    may disable a segment of the multi-segment illumination source  125  of  FIG.  1    as a result of setting the first shunt enable  515  to a logic low, for example during the time that the reset  505  is applied to the spatial light modulator  110  and during the time the LED enable  510  is deasserted. Alternatively, the first shunt enable  515  may be configured to disable the first driver  302  as a result of a logic high, such that the first shunt enable  515  may enable the first driver  302  as a result of a logic low. 
     The first PWM signal  520  represents the signal of the first PWM terminal  308  of  FIG.  3   . The first PWM signal  520  may indicate the current density being supplied to the first LED output terminal  318  based on a duty cycle. For example, the first LED driver  312  supplies approximately 40 percent of the maximum output to the first LED output terminal  318  as a result of the first PWM signal  520  having a 40 percent duty cycle. Additionally, the first PWM signal  520  may be configured to modify the color temperature of a segment. For example, the duty cycle of the first PWM signal  520  may be increased to increase the color temperature and intensity as a result of the increase in the duty cycle increasing the current density supplied by the driver circuitry  130  to the segment and/or region. In some such examples, the color temperature is modified as a result of the increased amount of time, wherein the segment is enabled. Advantageously, the first PWM signal  520  enables the first driver  302  to supply power to a segment of the multi-segment illumination source  125  based on a duty cycle. 
     The first LED output  525  represents the signal at the first LED output terminal  318 . The first LED output  525  may be configured to represent power supplied to a segment of the multi-segment illumination source  125  of  FIG.  1   . The first LED output  525  may be configured to represent power being supplied to the segment as a logic high. The first LED output  525  may be configured to represent no power being supplied to the segment as a logic low. For example, the first LED output  525  is a logic low as a result of the first LED enable  510  being equal to a logic low, such that the first LED driver  312  is disabled. The first LED output  525  has a duty cycle approximately equal to the duty cycle of the first PWM signal  520 , such that the current density of the first LED output  525  may be modified by changing the duty cycle of the first PWM signal. Advantageously, the power supplied by the first driver  302  (illustrated as the first LED output  525 ) has a duty cycle, such that the color temperature may be modified. 
     The second LED enable  530  represents the signal at the second LED enable terminal  322  of  FIG.  3   . The second LED enable  530  may be configured to represent the second LED enable terminal  322  being asserted as a logic high, indicated by LED_EN=1. The second LED enable  530  may be configured to represent the second LED enable terminal  322  being disabled as a logic low, indicated by LED_EN=0. For example, the controller  135  asserts the second LED enable  530  to enable the second LED driver  324  to supply power to the second LED output terminal  330  of  FIG.  3   . 
     The second shunt enable  535  represents the value at the second shunt enable terminal  326  of  FIG.  3   . The second shunt enable  535  may represent the second shunt enable terminal  326  being asserted as a logic high, indicated by SHUNT=HIGH, such that the second shunt  328  of  FIG.  3    enables the second LED driver  324  to supply power to the second LED output terminal  330 . The second shunt enable  535  may be configured to represent the second shunt enable terminal  326  being disabled as a logic low, indicated by SHUNT=LOW, such that the second shunt  328  disables the second driver  304  of  FIG.  3   . For example, the controller  135  may disable a segment of the multi-segment illumination source  125  controlled by the second driver  304  as a result of the second shunt enable  535  being set to a logic low. Alternatively, the second shunt enable  535  may be configured to disable the second driver  304  as a result of a logic high, such that the second shunt enable  535  may enable the second driver  304  as a result of a logic low. Advantageously, the first shunt enable  515  and the second shunt enable  535  may be electrically coupled to decrease the integration complexity of the driver circuitry  130 . For example, the shunt enables  515  and  535  may be coupled together to allow the controller  135  to disable a plurality of segments comprising a region. 
     The second PWM signal  540  represents the signal at the second PWM terminal  320  of  FIG.  3   . The second PWM signal  540  may represent the current density being supplied to the second LED output terminal  330  based on a duty cycle. For example, the second LED driver  324  supplies approximately 40 percent of the maximum output to the second LED output terminal  330  as a result of the second PWM signal  540  having a 40 percent duty cycle. Additionally, the second PWM signal  540  may be configured to modify the color temperature of a segment. For example, the duty cycle of the second PWM signal  540  may be increased to increase the color temperature and intensity. Advantageously, the second PWM signal  540  enables the second driver  304  to supply power to a segment of the multi-segment illumination source  125  based on a duty cycle. 
     The second LED output  545  represents the signal at the second LED output terminal  330 . The second LED output  545  may represent power supplied to a segment of the multi-segment illumination source  125 . The second LED output  545  may be configured to represent power being supplied to the segment as a logic high. The second LED output  545  may be configured to represent no power being supplied to the segment as a logic low. For example, the second LED output  545  is a logic low as a result of the second LED enable  530  and/or the second shunt enable  535  being equal to a logic low, such that the second LED driver  324  is disabled. Advantageously, the power supplied by the second driver  304  (illustrated as the second LED output  545 ) has a duty cycle, such that the color temperature may be modified. For example, increasing the duty cycle of the second LED output  545  increases the color temperature of the light, towards the maximum color temperature  420  of  FIG.  4   , as a result of the perceived light being altered as the duty cycle of the LED changes. In such an example, the color temperature of a segment is lower, closer to the minimum color temperature  430  of  FIG.  4   , as a result of the duty cycle of the second PWM signal  540  being lower. 
     The third LED enable  550  is represents the signal at the third LED enable terminal  334  of  FIG.  3   . The third LED enable  550  may represent the third LED enable terminal  334  being asserted as a logic high, pictured in  FIG.  5   . The third LED enable  550  may represent the third LED enable terminal  334  being disabled as a logic low, not pictured in  FIG.  5   . For example, the controller  135  asserts the third LED enable  550  to enable the third LED driver  336  to supply power to the third LED output terminal  342  of  FIG.  3   . 
     The third shunt enable  555  represents the signal at the third shunt enable terminal  338  of  FIG.  3   . The third shunt enable  555  may be configured to represent the third shunt enable terminal  338  being asserted as a logic high, such that the third shunt  340  of  FIG.  3    enables the third LED driver  336  to supply power to the third LED output terminal  342 , as pictured in  FIG.  5   . The third shunt enable  555  may to represent the third shunt enable terminal  338  being disabled as a logic low, such that the third shunt  340  disables the third driver  306  of  FIG.  3   , not pictured in  FIG.  5   . For example, the controller  135  may disable a segment of the multi-segment illumination source  125  as a result of setting the third shunt enable  555  to a logic low. Alternatively, the third shunt enable  555  may be configured to disable the third driver  306  as a result of a logic high, such that the third shunt enable  555  may enable the third driver  306  as a result of a logic low. 
     The third PWM signal  560  represents the third PWM terminal  332  of  FIG.  3   . The third PWM signal  560  may represent the current density being supplied to the third LED output terminal  342  based on a one hundred percent duty cycle, such that the third PWM signal  560  may be represented by asserting the third PWM terminal  332  of  FIG.  3   . For example, the third LED driver  336  supplies approximately 40 percent of the maximum output to the third LED output terminal  342  as a result of the third PWM signal  560  having a 40 percent duty cycle. Additionally, the third PWM signal  560  may be configured to modify the color temperature of a segment. For example, the duty cycle of the third PWM signal  560  may be increased to increase the color temperature and intensity. Advantageously, the third PWM signal  560  enables the third driver  306  to supply power to a segment of the multi-segment illumination source  125  based on a duty cycle. 
     The third LED output  565  represents the third LED output terminal  342 . The third LED output  565  may represent power supplied to a segment of the multi-segment illumination source  125 . The third LED output  565  may represent power being supplied to the segment as a logic high, as pictured in  FIG.  5   . The third LED output  565  may be configured to represent no power being supplied to the segment as a logic low, not pictured in  FIG.  5   . For example, the third LED output  565  is a logic low as a result of the third LED enable  550  being equal to a logic low, such that the third LED driver  336  is disabled. Advantageously, the power supplied by the third driver  306  (illustrated as the third LED output  565 ) has a one hundred percent duty cycle, such that the color temperature is the closed possible value to the maximum color temperature  420 . 
     At an example first time  570 , the reset  505  transitions from a logic high to a logic low, such that the spatial light modulator  110  may no longer be latched in reset and/or loading values from the controller  135 . At the first time  570 , the first shunt enable  515  transitions from a logic low to a logic high to enable the first driver  302  to supply power to the first LED output terminal  318 . At the first time  570 , the first LED output  525  is configured to supply power with an approximately 40 percent duty cycle as a result of the first shunt enable  515  and first LED enable  510  being asserted to a logic high and the first PWM signal  520  having a duty cycle approximately equal to  40  percent. At the first time  570 , the second LED output  545  is configured to be approximately the same as the first LED output  525 , such that the power supplied to the segments corresponding to the drivers  302  and  304  are the same color temperature and intensity. 
     At a second time  575 , the reset  505  transitions from a logic low to a logic high, such that the spatial light modulator  110  is latched in the reset operation. At the second time  575 , the shunt enables  515  and  535  transition from a logic high to a logic low as a result of the spatial light modulator  110  being latched in reset operation. At the second time  575 , the LED outputs  525  and  545  are a logic low as a result of the shunt enables  515  and  535  being a logic low. Advantageously, the efficiency of the headlight  105  is increased as a result of the drivers  302  and  304  being disabled during the duration where in the reset  505  is a logic high. 
     At a third time  580 , the reset  505  transitions from a logic high to a logic low, such that the spatial light modulator  110  is no longer latched in reset operation. At the third time  580  the operation of the driver circuitry  130  is approximately equal to at the first time  570 . Advantageously, the driver circuitry  130  may be coupled be asserted by the controller  135  to represent an LED output with a one hundred percent duty cycle, such that the integration complexity of the headlight  105  is decreased. For example, the third PWM signal  560  is asserted to a logic high to reduce the integration complexity of the third driver  306 . In some such examples, the third LED output  565  may remain at a logic high during the durations wherein the reset  505  is asserted to a logic high as a result of the controller  135  determining no transition in the operation of the segment and/or region corresponding to the third LED output  565 . 
     At a fourth time  585 , the reset  505  transitions from a logic high to a logic low, such that the spatial light modulator  110  is no longer latched in reset operation. At the fourth time  585 , the LED enables  510  and  530  transition from a logic high to a logic low, such that the LED outputs  525  and  545  are set to a logic low. At the fourth time  585 , the drivers  302  and  304  do not supply power to the LED output terminals  318  and  330 . At the fourth time  585 , the third driver  306  remains enabled as a result of the third LED enable  550  and third shunt enable  555  being asserted to a logic high. Advantageously, the headlight  105  is able to control the portions of the field of view being illuminated based on the driver circuitry  130 . Advantageously, the headlight  105  is able to individually control the color temperature and intensity of each segment of the multi-segment illumination source  125  based on the PWM signals  520 ,  540 , and  560 . 
       FIG.  5    is a table  600  of example operating parameters of the driver circuitry  130  of  FIGS.  1  and  3   . In the example of  FIG.  5   , the table  600  includes an example LED driver current column  605 , an example duty cycle column  610 , an example illumination column  615 , an example color temperature column  620 , an example first operation  625 , a second operation  630 , a third operation  635 , a fourth operation  640 , and a fifth operation  645 . In the example of  FIG.  5   , the table  600  is configured to represent an optical output of the multi-segment illumination source  125  of  FIG.  1    as a result of the electrical outputs of the driver circuitry  130 . 
     The LED driver current column  605  represents the current supplied by the driver circuits (e.g., the drivers  302 - 306  of  FIG.  3   ), such that the LED outputs  525 ,  545 , and/or  565  of  FIG.  4    being asserted to a logic high represent the LED driver current value. For example, the first driver  302  supplies 3 amps (A) as the LED drive current during the duration wherein the first LED output  525  is asserted to a logic high. Alternatively, the LED drivers  312 ,  324 , and  336  may be configured to supply a range of drive current, such that the illumination and color temperature of segments and/or regions may be controlled by modifying the drive current and/or the duty cycle. 
     The duty cycle column  610  represents the duty cycle of the PWM signals  520 ,  540 , and/or  560 . For example, the duty cycle of the first PWM signal  520  is equal to 10 percent as a result of the duration wherein the first PWM signal  520  is asserted to a logic high is 10 percent of the overall duration of the first PWM signal  520 . 
     The illumination column  615  is configured to represent the illumination of a segment (e.g., the segments  202 - 208  of  FIG.  2 A , the segments  212 - 216  of  FIG.  2 B , the segments  220 - 242  of  FIGS.  2 C and  2 D , etc.) of the multi-segment illumination source  125  of  FIG.  1   . The illumination column  615  is configured to represent the illumination of the segment in lumens, such that the intensity of the light increases as the lumens increases. 
     The color temperature column  620  is configured to represent the color temperature of the light supplied by the segment. The color temperature column  620  is configured to represent the color temperature in kelvin, such that an orange tint increases as the color temperature decreases. Alternatively, the blue tint increases as the color temperature increases. 
     The first operation  625  represents the first row of the table  600 . The first operation  625  represents the operation of the segment (illustrated by columns  615  and  620 ) based on the operation of the driver circuitry  130  (illustrated by columns  605  and  610 ). The LED driver current column  605  indicates that the driver circuitry  130  is to supply 3 amps during the first operation  625 . The duty cycle column  610  indicates that the duty cycle of the LED output is approximately equal to 10 percent during the first operation  625 . The illumination column  615  indicates that the segment is producing an illumination approximately equal to 730 Lumens during the first operation  625 . The color temperature column  620  indicates that the segment is producing light of a color temperature approximately equal to 5440 Kelvin (K) during the first operation  625 . 
     The second operation  630  represents the second row of the table  600 . The second operation  630  represents the operation of the segment (illustrated by columns  615  and  620 ) based on the operation of the driver circuitry  130  (illustrated by columns  605  and  610 ). The LED driver current column  605  is configured to indicate that the driver circuitry  130  is to supply  3  amps during the second operation  630 . The duty cycle column  610  is configured to indicate that the duty cycle of the LED output is approximately equal to 30 percent during the second operation  630 . The illumination column  615  is configured to indicate that the segment is producing an illumination approximately equal to 1270 Lumens during the second operation  630 . The color temperature column  620  is configured to indicate that the segment is producing light of a color temperature approximately equal to 5610 Kelvin (K) during the second operation  630 . Advantageously, the illumination and color temperature increased as a result of increasing the duty cycle. 
     The third operation  635  is configured to represent the third row of the table  600 . The third operation  635  is configured to represent the operation of the segment (illustrated by columns  615  and  620 ) based on the operation of the driver circuitry  130  (illustrated by columns  605  and  610 ). The LED driver current column  605  is configured to indicate that the driver circuitry  130  is to supply 3 amps during the third operation  635 . The duty cycle column  610  is configured to indicate that the duty cycle of the LED output is approximately equal to 60 percent during the third operation  635 . The illumination column  615  is configured to indicate that the segment is producing an illumination approximately equal to 2190 Lumens during the third operation  635 . The color temperature column  620  is configured to indicate that the segment is producing light of a color temperature approximately equal to 6490 Kelvin (K) during the third operation  635 . Advantageously, the illumination and color temperature increased as a result of increasing the duty cycle. 
     The fourth operation  640  is configured to represent the fourth row of the table  600 . The fourth operation  640  is configured to represent the operation of the segment (illustrated by columns  615  and  620 ) based on the operation of the driver circuitry  130  (illustrated by columns  605  and  610 ). The LED driver current column  605  is configured to indicate that the driver circuitry  130  is to supply 3 amps during the fourth operation  640 . The duty cycle column  610  is configured to indicate that the duty cycle of the LED output is approximately equal to 80 percent during the fourth operation  640 . The illumination column  615  is configured to indicate that the segment is producing an illumination approximately equal to 2810 Lumens during the fourth operation  640 . The color temperature column  620  is configured to indicate that the segment is producing light of a color temperature approximately equal to 6490 Kelvin (K) during the fourth operation  640 . Advantageously, the illumination increased as a result of increasing the duty cycle and the color temperature remained approximately the same, such that the segments brightness can be modified without changing the color temperature. 
     The fifth operation  645  is configured to represent the fifth row of the table  600 . The fifth operation  645  is configured to represent the operation of the segment (illustrated by columns  615  and  620 ) based on the operation of the driver circuitry  130  (illustrated by columns  605  and  610 ). The LED driver current column  605  is configured to indicate that the driver circuitry  130  is to supply 3 amps during the fifth operation  645 . The duty cycle column  610  is configured to indicate that the duty cycle of the LED output is approximately equal to 100 percent during the fifth operation  645 . The illumination column  615  is configured to indicate that the segment is producing an illumination approximately equal to 3300 Lumens during the fifth operation  645 . The color temperature column  620  is configured to indicate that the segment is producing light of a color temperature approximately equal to 6490 Kelvin (K) during the fifth operation  645 . Advantageously, the illumination increased as a result of increasing the duty cycle and the color temperature remained approximately the same, such that the segments brightness can be modified without changing the color temperature. 
       FIG.  6 B  is a table  650  of an operation of the driver circuitry  130  of  FIGS.  1  and  3    included in the headlight  105  of  FIG.  1   . The table  650  includes a LED driver current column  655 , a duty cycle column  660 , an illumination column  665 , a color temperature column  670 , a first operation row  675 , a second operation row  680 , a third operation row  685 , a fourth operation row  690 , and a fifth operation row  695 . The table  650  is configured to represent the operation of traditional driver circuitry to control the illumination and color temperature based on the LED drive current. 
     The LED drive current column  655  is configured to represent the current supplied by driver circuitry to a headlight. The LED driver current column  655  represents the supplied current in amps (A). The duty cycle column  660  is configured to represent the duty cycle applied to the LED driver circuitry to control the headlight. The duty cycle column  660  is configured to a 100 percent duty cycle to represent a constant voltage. The illumination column  665  is configured to represent the magnitude of light projected by the headlight in Lumens. The color temperature column  670  is configured to represent the color temperature of the light projected by the headlight in Kelvin (K). 
     The first operation row  675  is configured to represent the operation of the headlight as a result of an LED drive current approximately equal to 1 amp with a 100 percent duty cycle, such that 1 amp is continuously supplied to the headlight. The first operation row  675  illustrates that the illumination of the headlight to be approximately equal to 610 Lumens at a color temperature approximately equal to 5430 Kelvin. 
     The second operation row  680  is configured to represent the operation of the headlight as a result of an LED drive current approximately equal to 1.5 amps with a 100 percent duty cycle, such that 1.5 amps are continuously supplied to the headlight. The second operation row  680  illustrates that the illumination of the headlight to be approximately equal to 1360 Lumens at a color temperature approximately equal to 5430 Kelvin. 
     The third operation row  685  is configured to represent the operation of the headlight as a result of an LED drive current approximately equal to 2 amps with a 100 percent duty cycle, such that 2 amps are continuously supplied to the headlight. The third operation row  685  illustrates that the illumination of the headlight to be approximately equal to 2290 Lumens at a color temperature approximately equal to 5440 Kelvin. 
     The fourth operation row  690  is configured to represent the operation of the headlight as a result of an LED drive current approximately equal to 2.5 amps with a 100 percent duty cycle, such that 2.5 amps are continuously supplied to the headlight. The fourth operation row  690  illustrates that the illumination of the headlight to be approximately equal to 2870 Lumens at a color temperature approximately equal to 6290 Kelvin. 
     The fifth operation row  695  is configured to represent the operation of the headlight as a result of an LED drive current approximately equal to 3 amps with a 100 percent duty cycle, such that 3 amps are continuously supplied to the headlight. The fifth operation row  695  illustrates that the illumination of the headlight to be approximately equal to 3300 Lumens at a color temperature approximately equal to 6490 Kelvin. Advantageously, the driver circuitry  130  of  FIGS.  1  and  3    implement a varying duty cycle to change the current density to enable simple control of the intensity and color temperature of the light projected by the headlight  105 . 
       FIG.  7 A  is an illustration  700  of a first example operation of the headlight  105  of  FIG.  1    including the first multi-segment illumination source  202  of  FIG.  2 A . The illustration  700  represents an area that the headlight  105  illuminates during an example operation, such that the horizontal axis (labeled as X COORDINATE VALUE) represents the horizontal portions of the field of view and the vertical axis (labeled as Y COORDINATE VALUE) represents the vertical portions of the field of view. In the example of  FIG.  7 A , the illustration  700  includes an area illuminated by the first multi-segment illumination source  202  (labeled to illustrate the area illuminated by each segment), an example incoherent illuminance gradient  705 , and an example field of view  710 . The illustration  700  is configured to represent the intensity of the illumination of the field of view  710  during an example operation wherein the segments  204 - 208  (labeled to the corresponding geometric area illuminated by each segment) are being supplied the same amount of power from the driver circuitry  130  of  FIG.  1   . In the example  FIG.  7 A , the first operation of the headlight  105  represents an example high beam operation, such that all portions of the field of view are illuminated. 
     In the example of  FIG.  7 A , the first multi-segment illumination source  202  includes the first segment  204 , the second segment  206 , and the third segment  208 . The segments  204 - 208  are configured to individually correspond to approximately a third of the first multi-segment illumination source  202 . The first multi-segment illumination source  202  is configured to illuminate the field of view  710 , such that the highest intensities of light are limited within the portion of the field of view corresponding to the first multi-segment illumination source  202  reflected by the spatial light modulator  110  of  FIG.  1   . 
     The incoherent illuminance gradient  705  is configured to represent a range of possible illuminances of the segments  204 - 208  in Lumens. The field of view  710  is configured to represent the approximate area wherein the headlight  105  may illuminate. The field of view  710  is based on the projection optics  115 . For example, the projection optics  115  may be configured to project the light from the spatial light modulator  110  to illuminate a greater area. 
     In the example of  FIG.  7 A , the segments  204 - 208  are powered by the driver circuitry  130 . The portion of the field of view  710  corresponding to the segments  204 - 208  include the highest intensity, which is approximately the same illuminance throughout the first multi-segment illumination source  202 . The portions of the field of view  710  not directly illuminated by the first multi-segment illumination source  202  have an illuminance less than that of the segments  204 - 208 . The headlight  105  is configured to not illuminate the area outside the field of view  710 , such that the illuminance is approximately equal to zero. Advantageously, the first multi-segment illumination source  202  illuminates the portions of the field of view  710  uniformly corresponding to the light projected by the spatial light modulator  110 . 
       FIG.  7 B  is a table  715  of the operation of  FIG.  7 A  representative of the headlight  105  of  FIG.  1    including the first multi-segment illumination source  202  of  FIG.  2 A . In the example of  FIG.  7 B , the table  715  includes an example left segment column  720 , an example center segment column  725 , an example right segment column  730 , an example total column  735 , an example current density row  740 , an example power row  745 , an example Lumens row  750 , and an example 2023 Lumens row  755 . In the example of  FIG.  6 B , the table  715  is configured to represent the operation of the first multi-segment illumination source  200  during an operation illustrated by the illustration  700  of  FIG.  7 A . 
     In the example of  7 B, the left segment column  720  is configured to represent the operation of the first segment  204  of  FIG.  2 A  of the first multi-segment illumination source  202  during the operation of the illustration  700 . The center segment column  725  is configured to represent the operation of the second segment  206  of  FIG.  2 A  of the first multi-segment illumination source  202  during the operation of the illustration  700 . The right segment column  730  is configured to represent the operation of the third segment  208  of  FIG.  2 A  of the first multi-segment illumination source  202  during the operation of the illustration  700 . The total column  735  is configured to represent the sum of the values comprising the segments  204 - 208  for the power row  745 , the Lumens row  750 , and the 2023 Lumens row  755 . 
     In the example of  FIG.  7 B , the current density row  740  is configured to represent the current density in amps per millimeter squared (A/mm 2 ) of the power supplied to each of the segments  204 - 208 . The current density row  740  is configured to represent both the current and duty cycle of the power supplied by the driver circuitry  130  of  FIG.  1   . The current density row  740  illustrates that the segments  204 - 208  are supplied the same current density of approximately 3 amps per millimeter squared, during the operation illustrated by  FIG.  7 A . 
     The power row  745  is configured to represent the power consumed by the segments  204 - 208  during the operation illustrated by  FIG.  7 A . The power row  745  is configured to represent the power consumed by the segments  204 - 208  in watts (W). The power row  745  illustrates that the segments  204 - 208  are configured to each individually consume approximately 16.3 watts of power. The total column  735  illustrates that the total power consumption of the first multi-segment illumination source  202  is approximately equal to 48.9 watts. 
     The Lumens row  750  is configured to represent the light intensity of the segments  204 - 208 , in Lumens, during the operation illustrated by  FIG.  7 A . The Lumens row  750  illustrates that each of the segments  204 - 208  individually supply approximately 975 Lumens of light. The total column  735  illustrates that the total light supplied by the first multi-segment illumination source  200  is approximately equal to 2925 Lumens. 
     The  2023  Lumens row  755  is configured to represent the light intensity of the segments  204 - 208 , in 2023 Lumens, during the operation illustrated by  FIG.  7 A . The 2023 Lumens row  755  illustrates that each of the segments  204 - 208  individually supply approximately 1170 2023 Lumens of light. The total column  735  indicates that the total light supplied by the first multi-segment illumination source  200  is approximately equal to 3510 2023 Lumens. 
       FIG.  8 A  is an illustration  800  of a second example operation of the headlight  105  of  FIG.  1    including the first multi-segment illumination source  202  of  FIG.  2 A . The illustration  800  represents an area that the headlight  105  illuminates during an example operation, such that the horizontal axis (labeled as X COORDINATE VALUE) represents the horizontal portions of the field of view and the vertical axis (labeled as Y COORDINATE VALUE) represents the vertical portions of the field of view. In the example of  FIG.  8 A , the illustration  800  includes the first multi-segment illumination source  202  (labeled to illustrate the area illuminated by each segment), an example incoherent illuminance gradient  805 , and an example field of view  810 . The illustration  800  is configured to represent the intensity of the illumination of the field of view  810  during an example operation wherein the segments  204  and  208  (labeled to the corresponding geometric area illuminated by each segment) are being supplied the same amount of power from the driver circuitry  130  of  FIG.  1    and the second segment  206  is supplied more power than the segments  204  and  208 . The illustration  800  is configured to represent a beam steering operation, wherein a portion of the field of view is illuminated more than another, such that the spatial light modulator  110  may be configured to project an image in the dimmer portions of the field of view  810 . Advantageously, the beam steering operation of  FIG.  8 A  may be configured to enable a spatial light modulator to project an image without having to overcome the light intensity generated by the headlight  105 . For example, a DMD may be included in the headlight  105 , such that directions may be projected on the road. In such an example, an image projected by the DMD is clearer when the area the image is being projected onto has a lower illumination. 
     In the example of  FIG.  8 A , the first multi-segment illumination source  202  includes the first segment  204 , the second segment  206 , and the third segment  208 . The segments  204 - 208  are configured to individually correspond to approximately a third of the first multi-segment illumination source  202 . The first multi-segment illumination source  202  is configured to illuminate the field of view  810 , such that the highest intensities of light are limited within the portion of the field of view corresponding to the first multi-segment illumination source  202  reflected by the spatial light modulator  110  of  FIG.  1   . 
     The incoherent illuminance gradient  805  is configured to represent a range of possible illuminances of the segments  204 - 208  in Lumens. The field of view  810  is configured to represent the approximate area wherein the headlight  105  may illuminate. The field of view  810  is based on the projection optics  115 . For example, the projection optics  115  may be configured to project the light from the spatial light modulator  110  to illuminate a greater area. 
     In the example of  FIG.  8 A , the segments  204 - 208  are powered by the driver circuitry  130 . The portion of the field of view  810  corresponding to the segments  204 - 208  include the highest intensity. In the example of  FIG.  8 A , the first multi-segment illumination source  202  is configured to illuminate the center portion of the field of view  810  by supplying more power to the second segment  206  than the segments  204  and  208 . The portions of the field of view  810  not directly illuminated by the first multi-segment illumination source  202  have an illuminance less than that of the segments  204 - 208 . The headlight  105  is configured to not illuminate the area outside the field of view  810 , such that the illuminance is approximately equal to zero. Advantageously, the portions of the field of view  810  corresponding to the segments  204  and  208  allow for additional circuitry to project images clearly and more efficient than conventional methods. For example, the headlight may be configured to project images corresponding to directions of a cars intended path, such that directions may be displayed to the driver without disrupting a line of sight with the road. 
       FIG.  8 B  is a table  815  of the operation of  FIG.  8 A  representative of the headlight  105  of  FIG.  1    including the first multi-segment illumination source  202  of  FIG.  2 A . In the example of  FIG.  8 B , the table  815  includes an example left segment column  820 , an example center segment column  825 , an example right segment column  830 , an example total column  835 , an example current density row  840 , an example power row  845 , an example Lumens row  850 , and an example 2023 Lumens row  855 . In the example of  FIG.  8 B , the table  815  is configured to represent the operation of the first multi-segment illumination source  202  during an operation illustrated by the illustration  800  of  FIG.  8 A . 
     In the example of  8 B, the left segment column  820  is configured to represent the operation of the first segment  204  of  FIG.  2 A  of the first multi-segment illumination source  202  during the operation of the illustration  800 . The center segment column  825  is configured to represent the operation of the second segment  206  of  FIG.  2 A  of the first multi-segment illumination source  202  during the operation of the illustration  800 . The right segment column  830  is configured to represent the operation of the third segment  208  of  FIG.  2 A  of the first multi-segment illumination source  202  during the operation of the illustration  800 . The total column  835  is configured to represent the sum of the values comprising the segments  204 - 208  for the power row  845 , the Lumens row  850 , and the 2023 Lumens row  855 . 
     In the example of  FIG.  8 B , the current density row  840  is configured to represent the current density in amps per millimeter squared (A/mm 2 ) of the power supplied to each of the segments  204 - 208 . The current density row  840  is configured to represent both the current and duty cycle of the power supplied by the driver circuitry  130  of  FIG.  1   . The current density row  840  illustrates that the segments  204  and  208  are supplied the same current density of approximately 1 amp per millimeter squared, during the operation illustrated by  FIG.  8 A . The current density row  840  illustrates that the second segment  206  is supplied a current density approximately equal to 5 amps per millimeter squared. 
     The power row  845  is configured to represent the power consumed by the segments  204 - 208  during the operation illustrated by  FIG.  8 A . The power row  845  is configured to represent the power consumed by the segments  204 - 208  in watts (W). The power row  845  illustrates that the segments  204  and  208  are configured to each individually consume approximately 4.8 watts of power. The power row  845  illustrates that the second segment  206 , corresponding to the center segment column  825 , is configured to consume approximately 29.6 watts. The total column  835  indicates that the total power consumption of the first multi-segment illumination source  202  is approximately equal to 35.2 watts during the operation illustrated by  FIG.  8 A . 
     The Lumens row  850  is configured to represent the light intensity of the segments  204 - 208 , in Lumens, during the operation illustrated by  FIG.  8 A . The Lumens row  850  illustrates that each of the segments  204  and  208  individually supply approximately  614  Lumens of light. The Lumens row  850  illustrates that the second segment  206  is configured to supply approximately 1120 Lumens of light. The total column  835  indicates that the total light supplied by the first multi-segment illumination source  200  is approximately equal to 2148 Lumens during the operation illustrated by  FIG.  8 A . 
     The 2023 Lumens row  855  is configured to represent the light intensity of the segments  204 - 208 , in 2023 Lumens, during the operation illustrated by  FIG.  8 A . The 2023 Lumens row  855  illustrates that each of the segments  204  and  208  individually supply approximately 617 2023 Lumens of light. The 2023 Lumens row  855  illustrates that the second segment  206  is configured to supply 1344 2023 Lumens of light. The total column  835  indicates that the total light supplied by the first multi-segment illumination source  200  is approximately equal to 2578 2023 Lumens during the operation illustrated by  FIG.  8 A . 
     Advantageously, the headlight  105  may configure the multi-segment illumination source  125  to beam steer the light supplied to the spatial light modulator  110 , such that the efficiency of the headlight  105  is increased. For example, a conventional headlight may cover or reflect light to make portions of the field of view appear to be illuminated less than other portions. 
       FIG.  9 A  is an illustration  900  of a third example operation of the headlight  105  of  FIG.  1    including the first multi-segment illumination source  202  of  FIG.  2 A . The illustration  900  represents an area that the headlight  105  illuminates during an example operation, such that the horizontal axis (labeled as X COORDINATE VALUE) represents the horizontal portions of the field of view and the vertical axis (labeled as Y COORDINATE VALUE) represents the vertical portions of the field of view. In the example of  FIG.  9 A , the illustration  900  includes the first multi-segment illumination source  202  (labeled to illustrate the area illuminated by each segment), an example incoherent illuminance gradient  905 , and an example field of view  910 . The illustration  900  is configured to represent the intensity of the illumination of the field of view  910  during an example operation wherein the segments  204  and  206  (labeled to the corresponding geometric area illuminated by each segment) are being supplied the same amount of power from the driver circuitry  130  of  FIG.  1    and the third segment  208  is supplied more power than the segments  204  and  206 . The illustration  900  is configured to represent a beam steering operation, wherein a portion of the field of view is illuminated more than another, such that the spatial light modulator  110  may be configured to project an image in the dimmer portions of the field of view  910 . For example, the headlight  105  include a DMD to project directions onto the road, such that an arrow may be projected to indicate a turn. In such an example, the DMD may be configured to project a hazard indication in the portions of the field of view corresponding to the segments  204  and  206 , such that the hazard may still be illuminated by the third segment  208 . 
     In the example of  FIG.  9 A , the first multi-segment illumination source  202  includes the first segment  204 , the second segment  206 , and the third segment  208 . The segments  204 - 208  are configured to individually correspond to approximately a third of the first multi-segment illumination source  202 . The first multi-segment illumination source  202  is configured to illuminate the field of view  910 , such that the highest intensities of light are limited within the portion of the field of view corresponding to the first multi-segment illumination source  202  reflected by the spatial light modulator  110  of  FIG.  1   . 
     The incoherent illuminance gradient  905  is configured to represent a range of possible illuminances of the segments  204 - 208  in Lumens. The field of view  910  is configured to represent the approximate area wherein the headlight  105  may illuminate. The field of view  910  is based on the projection optics  115 . For example, the projection optics  115  may be configured to project the light from the spatial light modulator  110  to illuminate a greater area. 
     In the example of  FIG.  9 A , the segments  204 - 208  are powered by the driver circuitry  130 . The portion of the field of view  910  corresponding to the segments  204 - 208  include the highest intensity. In the example of  FIG.  9 A , the first multi-segment illumination source  202  is configured to illuminate the right portion of the field of view  910  by supplying more power to the third segment  208  than the segments  204  and  206 . The portions of the field of view  910  not directly illuminated by the first multi-segment illumination source  202  have an illuminance less than that of the segments  204 - 208 . The headlight  105  is configured to not illuminate the area outside the field of view  910  to prevent illuminating areas that may generate potential hazards, such that the illuminance is approximately equal to zero. Advantageously, the portions of the field of view  910  corresponding to the segments  204  and  206  allow for additional circuitry to project images clearly and more efficient than conventional methods. 
       FIG.  9 B  is a table  915  of the operation of  FIG.  9 A  representative of the headlight  105  of  FIG.  1    including the first multi-segment illumination source  202  of  FIG.  2 A . In the example of  FIG.  9 B , the table  915  includes an example left segment column  920 , an example center segment column  925 , an example right segment column  930 , an example total column  935 , an example current density row  940 , an example power row  945 , an example Lumens row  950 , and an example 2023 Lumens row  955 . In the example of  FIG.  9 B , the table  915  is configured to represent the operation of the first multi-segment illumination source  202  during an operation illustrated by the illustration  900  of  FIG.  9 A . 
     In the example of  FIG.  9 B , the left segment column  920  is configured to represent the operation of the first segment  204  of  FIG.  2 A  of the first multi-segment illumination source  202  during the operation of the illustration  900 . The center segment column  925  is configured to represent the operation of the second segment  206  of  FIG.  2 A  of the first multi-segment illumination source  202  during the operation of the illustration  900 . The right segment column  930  is configured to represent the operation of the third segment  208  of  FIG.  2 A  of the first multi-segment illumination source  202  during the operation of the illustration  900 . The total column  935  is configured to represent the sum of the values comprising the segments  204 - 208  for the power row  945 , the Lumens row  950 , and the 2023 Lumens row  955 . 
     In the example of  FIG.  9 B , the current density row  940  is configured to represent the current density in amps per millimeter squared (A/mm 2 ) of the power supplied to each of the segments  204 - 208 . The current density row  940  is configured to represent both the current and duty cycle of the power supplied by the driver circuitry  130  of  FIG.  1   . The current density row  940  illustrates that the segments  204  and  206  are supplied the same current density of approximately 1 amp per millimeter squared, during the operation illustrated by  FIG.  9 A . The current density row  940  illustrates that the third segment  208  is supplied a current density approximately equal to 5 amps per millimeter squared. 
     The power row  945  is configured to represent the power consumed by the segments  204 - 208  during the operation illustrated by  FIG.  9 A . The power row  945  is configured to represent the power consumed by the segments  204 - 208  in watts (W). The power row  945  illustrates that the segments  204  and  206  are configured to each individually consume approximately 4.8 watts of power. The power row  945  illustrates that the third segment  208 , corresponding to the right segment column  930 , is configured to consume approximately 29.6 watts. The total column  935  indicates that the total power consumption of the first multi-segment illumination source  200  is approximately equal to 35.2 watts during the operation illustrated by  FIG.  9 A . 
     The Lumens row  950  is configured to represent the light intensity of the segments  204 - 208 , in Lumens, during the operation illustrated by  FIG.  9 A . The Lumens row  950  illustrates that each of the segments  204  and  206  individually supply approximately  614  Lumens of light. The Lumens row  950  illustrates that the third segment  208  is configured to supply approximately 1120 Lumens of light. The total column  935  indicates that the total light supplied by the first multi-segment illumination source  200  is approximately equal to 2148 Lumens during the operation illustrated by  FIG.  9 A . 
     The 2023 Lumens row  955  is configured to represent the light intensity of the segments  204 - 208 , in 2023 Lumens, during the operation illustrated by  FIG.  9 A . The 2023 Lumens row  955  illustrates that each of the segments  204  and  206  individually supply approximately 617 2023 Lumens of light. The 2023 Lumens row 955 illustrates that the third segment 208 is configured to supply 1344 2023 Lumens of light. The total column  935  indicates that the total light supplied by the first multi-segment illumination source  202  is approximately equal to 2578 2023 Lumens during the operation illustrated by  FIG.  9 A . 
     Advantageously, the headlight  105  may configure the multi-segment illumination source  125  to beam steer the light supplied to the spatial light modulator  110 , such that the efficiency of the headlight  105  is increased. For example, the controller  135  may configure the driver circuitry  130  to decrease the power supplied to segments of the multi-segment illumination source, such that portions of the field of view of the headlight  105  are dimmer than other portions to enable different operations of the headlight  105  (e.g., image projection). In some such examples, the efficiency of the headlight  105  is increased as a result of lowering the intensities of some segments without having to dissipate light. 
       FIG.  10    is a flowchart  1000  representative of example machine readable instructions and/or example operations that may be executed by example processor circuitry to implement color temperature correction using the driver circuitry  130  of  FIGS.  1  and  3   . In the example of  FIG.  10   , the flowchart  1000  represents an operation that may be implemented by the controller  135  of  FIG.  1    to configure the driver circuitry  130  to supply power to segments (e.g., the segments  204 - 208 ,  212 - 216 , and  220 - 242 ) of a multi-segment illumination source (e.g., the multi-segment illumination sources  202 ,  210 ,  218 , and  243 ), such that each segment comprising the multi-segment illumination source supplies light with approximately the same color temperature (e.g., the values of the color temperature columns  620  and  670  of  FIGS.  6 A and  6 B ). 
     At block  1005 , the driver circuitry  130  generates a first drive signal based on a first duty cycle of a first pulse width modulation (PWM) signal. For example, the controller  135  supplies the first PWM signal  520  of  FIG.  5    to the first PWM terminal  308  of  FIG.  3    to generate the first LED output  525  of  FIG.  5   . In such an example, the duty cycle of the first PWM signal  520  may generate a color temperature similar to the operations  625 - 645  of  FIG.  6 A . Advantageously, the controller  135  may determine the color temperature generated by the first duty cycle. The controller  135  proceeds to block  1010 . 
     At block  1010 , the controller  135  illuminates a first illumination source segment of a multi-segment illumination source based on the first drive signal to produce a first light. For example, the first LED output  525  is coupled to the first segment  204  of  FIG.  2 A  to generate a light of a color temperature and a brightness. In such an example, the controller  135  may determine the color temperature and brightness of the first segment  204  based on the duty cycle supplied to the first PWM terminal  308 . The controller  135  proceeds to block  1015 . 
     At block  1015 , the controller  135  determines a second duty cycle of a second PWM signal to instruct a second illumination source segment to generate a second light. For example, the controller  135  generates a duty cycle of the second PWM signal  540  of  FIG.  5    to the second PWM terminal  320  of  FIG.  3    based on the color temperature generated by supplying the first LED output  525  to the first segment  204 . Advantageously, the controller  135  may utilize the operation of rows  625 - 645  of  FIG.  6 A and  675 - 695    of  FIG.  6 B  to determine a duty cycle which would generate the same color temperature. The controller  135  proceeds to block  1020 . 
     At block  1020 , the controller  135  generates a second drive signal based on the second PWM signal. For example, the controller  135  supplies the second PWM signal  540  to the second PWM terminal  320  to generate the second LED output  545 , such that the second segment  206  of  FIG.  2 A  generates a light with a color temperature approximately equal to the color temperature of the first segment  204 . The controller  135  proceeds to block  1025 . 
     At block  1025 , the driver circuitry  130  illuminates a second illumination source segment of the multi-segment illumination source based on the second drive signal to produce the second light. For example, the second driver  304  supplies the second LED output  545  to the second segment  206 , such that the second segment  206  produces a light of a color temperature approximately equal to the color temperature of the first light. The controller  135  proceeds to end the color temperature correction of the flowchart  1000 . 
     Although example methods are described with reference to the flowchart  1000  illustrated in  FIG.  10   , many other methods of color temperature correction may alternatively be used in accordance with the in accordance with this description. For example, the order of execution of the blocks may be changed, and/or some of the blocks described may be changed, eliminated, or combined. Similarly, additional operations may be included in the manufacturing process before, in between, or after the blocks shown in the illustrated examples. 
     In this description, the term “and/or” (when used in a form such as A, B and/or C) refers to any combination or subset of A, B, C, such as: (a) A alone; (b) B alone; (c) C alone; (d) A with B; (e) A with C; (f) B with C; and (g) A with B and with C. Also, as used herein, the phrase “at least one of A or B” (or “at least one of A and B”) refers to implementations including any of: (a) at least one A; (b) at least one B; and (c) at least one A and at least one B. 
     The term “couple” is used throughout the specification. The term may cover connections, communications, or signal paths that enable a functional relationship consistent with this description. For example, if device A provides a signal to control device B to perform an action, in a first example device A is coupled to device B, or in a second example device A is coupled to device B through intervening component C if intervening component C does not substantially alter the functional relationship between device A and device B such that device B is controlled by device A via the control signal provided by device A. 
     A device that is “configured to” perform a task or function may be configured (e.g., programmed and/or hardwired) at a time of manufacturing by a manufacturer to perform the function and/or may be configurable (or re-configurable) by a user after manufacturing to perform the function and/or other additional or alternative functions. The configuring may be through firmware and/or software programming of the device, through a construction and/or layout of hardware components and interconnections of the device, or a combination thereof 
     As used herein, the terms “terminal”, “node”, “interconnection”, “pin” and “lead” are used interchangeably. Unless specifically stated to the contrary, these terms are generally used to mean an interconnection between or a terminus of a device element, a circuit element, an integrated circuit, a device or other electronics or semiconductor component. 
     A circuit or device that is described herein as including certain components may instead be adapted to be coupled to those components to form the described circuitry or device. For example, a structure described as including one or more semiconductor elements (such as transistors), one or more passive elements (such as resistors, capacitors, and/or inductors), and/or one or more sources (such as voltage and/or current sources) may instead include only the semiconductor elements within a single physical device (e.g., a semiconductor die and/or integrated circuit (IC) package) and may be adapted to be coupled to at least some of the passive elements and/or the sources to form the described structure either at a time of manufacture or after a time of manufacture, for example, by an end-user and/or a third-party. 
     While the use of particular transistors are described herein, other transistors (or equivalent devices) may be used instead. For example, a p-type metal-oxide-silicon FET (“MOSFET”) may be used in place of an n-type MOSFET with little or no changes to the circuit. Furthermore, other types of transistors may be used (such as bipolar junction transistors (BJTs)). 
     Circuits described herein are reconfigurable to include the replaced components to provide functionality at least partially similar to functionality available prior to the component replacement. Components shown as resistors, unless otherwise stated, are generally representative of any one or more elements coupled in series and/or parallel to provide an amount of impedance represented by the shown resistor. For example, a resistor or capacitor shown and described herein as a single component may instead be multiple resistors or capacitors, respectively, coupled in parallel between the same nodes. For example, a resistor or capacitor shown and described herein as a single component may instead be multiple resistors or capacitors, respectively, coupled in series between the same two nodes as the single resistor or capacitor. 
     Uses of the phrase “ground” in the foregoing description include a chassis ground, an Earth ground, a floating ground, a virtual ground, a digital ground, a common ground, and/or any other form of ground connection applicable to, or suitable for, the teachings of this description. Unless otherwise stated, “about,” “approximately,” or “substantially” preceding a value means +/−10 percent of the stated value. 
     Modifications are possible in the described embodiments, and other embodiments are possible, within the scope of the claims.