Abstract:
A Midwave FLIR imaging optical apparatus has both a narrow and wide field of view. The imaging optical apparatus has a See Spot mode of operation, where a laser designator spot image is superimposed on the FLIR image in the narrow field of view. A laser rangefinder receiver path is also provided. A shared aperture collects incident radiation, which after manipulation by a plurality of optically significant surfaces, projects radiation to a detector. The imaging optical system is lightweight and compact and efficiently transmits FLIR energy and a narrow band of laser energy so that a signal due to a source outside the pass bands of interest (including solar energy) will not adversely effect operation of the imaging optical apparatus.

Description:
BACKGROUND 
   1. Field of Invention 
   The present device relates generally to optical apparatus for gathering imagery. More specifically, the device relates to a forward looking infrared (FLIR) apparatus having multiple optical systems. 
   2. Background Information 
   Forward looking infrared (FLIR) imaging systems are known. Such systems can be used with laser designators that illuminate the target with a laser beam to enhance tracking, such as noted in U.S. Pat. No. 4,155,096, the disclosure of which is hereby incorporated by reference in its entirety. Moreover, FLIR imaging systems can employ a laser and an associated detection scheme for illuminating and detecting a particular “hit spot” on a certain area of a target to enhance the likelihood of a target kill, such as noted in U.S. Pat. Nos. 5,900,620 and 5,918,305, the disclosures of which are hereby incorporated by reference in their entirety. Typically, FLIR imaging systems on military aircraft include optics to provide a wide field of view (WFOV) for piloting and optics to provide a narrow field of view (NFOV), for targeting, such as described in U.S. Pat. Nos. 5,418,364, 5,005,083, 5,049,740, 5,933,272, and 5,936,771, the disclosures of which are hereby incorporated by reference in their entirety. 
   Generally, the FLIR system and the laser designator are separate modules because FLIR optics typically will not transmit the wavelength of the laser designator or because the FLIR detector will not respond to the wavelength of the laser designator. In such systems, the FLIR system and the laser designator system must be boresighted to insure that the laser designator accurately illuminates the target. Boresighting is typically accomplished using an optical device (a boresight tool) that bridges the apertures of the FLIR system and laser designator system such that some of the emission from the laser designator is converted to thermal energy that can be imaged by the FLIR system for aligning the two systems. 
   However, the relative alignment (lines of sight) for FLIR and laser-designator systems designed as separate modules will typically change due to vibration, temperature changes, and other environmental conditions. Accordingly, repeated boresighting in such systems is necessary. Whether such boresighting is accomplished manually or automatically, such as described in U.S. Pat. No. 4,155,096 to Thomas et al., the boresighting tool adds to the complexity, weight, and cost of the overall FLIR/laser-designator system. 
   U.S. Pat. No. 5,900,620 discloses optics that both receive radiation from a target and receive a reflected laser beam incident on the target. The system described therein partially shares certain optical components along a partial common optical axis. However, the system therein also includes separate optical components disposed along different optical axes for changing polarization and for directing the target radiation and the reflected laser radiation to separate detectors. Accordingly, the system disclosed in U.S. Pat. No. 5,900,620 has the potential to suffer from the alignment problems requiring corrective boresighting similar to those noted above. Moreover, the system therein utilizes separate detectors for the above-noted functions, thereby having higher power requirements and additional complexity compared to a system utilizing a single detector for the above-noted functions. 
   SUMMARY 
   The present invention is directed to an imaging optical apparatus that combines FLIR and laser-designator optical systems. Exemplary embodiments minimize the number of components, including detectors, to reduce weight, system complexity, and cost. The present invention provides an imaging optical apparatus and a method for gathering optical imagery that achieves these and other goals. 
   In an exemplary embodiment, an imaging optical apparatus has a first detector, a first optical system with a first field of view for projecting at least a first portion of incident radiation emitted from a target onto the first detector, a second optical system having a second field of view narrower than the first field of view for projecting at least a second portion of the incident radiation onto the first detector, and a third optical system configured to receive radiation reflected from the target, the third optical system being operable with the second optical system to project the reflected radiation onto the first detector. The second and third optical systems share an entrance aperture and an optical axis and the first portion and the second portion of incident radiation have a coincident focal plane located at the first detector. A fold mirror located in the optical path of the first and second optical systems between the first and second aperture and the first detector selectively directs to the first detector the first portion of the incident radiation or the second portion of the incident radiation and the reflected radiation. 
   An additional exemplary embodiment further comprises a fourth optical system configured to receive radiation in a third wavelength range emitted by a ranging laser toward the target and reflected from the target. The fourth optical system shares the entrance aperture with the second and third optical systems. 
   A further exemplary embodiment further comprises a second detector, wherein the second detector only receives radiation from the fourth optical system. 
   The exemplary embodiment of the imaging optical apparatus is a catadioptric optical system, utilizing both refractive and reflective optically significant surfaces. Additionally, the second optical system is a narrow field of view (NFOV) optical system comprising at least one catadioptric optically significant surface with a narrowband filter. 
   In an exemplary method of gathering imagery from a target, radiation emitted from a target in a first wavelength range is received using a first optical system having a wide field of view (WFOV) that projects a WFOV image onto a first detector and a second optical system having a narrow field of view (NFOV) that projects a NFOV image onto the first detector. Radiation in a second wavelength range is received using a third optical system and projected as a first laser image onto the first detector. The radiation in the second wavelength range is emitted from a first laser toward the target and is reflected by the target. The second and third optical systems share an entrance aperture and the NFOV image and the first laser image can be simultaneously projected onto the first detector. 
   An additional exemplary method of gathering imagery further comprises receiving radiation in a third wavelength range using a fourth optical system. The third wavelength range is emitted from a second laser toward the target and is reflected by the target. The fourth optical system projects a second laser image onto a second detector. 
   In an exemplary method of constructing an imaging optical apparatus, a first detector, first optical system, second optical system, and third optical system are provided. The first optical system has a wide field of view (WFOV), is configured to receive radiation emitted from a target in a first wavelength range, and is selectable to project a WFOV image onto the first detector. The second optical system has a narrow field of view (NFOV), is configured to receive radiation emitted from the target in the first wavelength range, and is selectable to project a NFOV image onto the first detector. The third optical system is configured to receive radiation in a second wavelength range and is operable with the second optical system to project a first laser image onto the first detector. The second wavelength range is emitted by a first laser toward the target and reflected from the target. The second and third optical systems share an entrance aperture and the NFOV image and the designator image can be simultaneously projected onto the first detector. 
   An additional exemplary method of gathering imagery from a target further comprises receiving radiation in a third wavelength range using a fourth optical system. The third wavelength range is emitted from a second laser toward the target and is reflected by the target. The fourth optical system projects a second laser image onto a second detector. 

   
     BRIEF DESCRIPTION OF THE DRAWING FIGURES 
     Objects and advantages of the invention will become apparent from the following detailed description of preferred embodiments in connection with the accompanying drawings, in which like numerals designate like elements and in which: 
       FIG. 1  is a schematic representation of the line trace of energy in a first embodiment of an imaging optical apparatus; 
       FIG. 2  is a schematic representation of the line trace of energy in an embodiment of a narrow field of view optical assembly; 
       FIG. 3  is a schematic representation of the line trace of energy in an embodiment of a See Spot optical assembly; 
       FIG. 4  is a schematic representation of the line trace of energy in an embodiment of a range finder optical assembly; and 
       FIG. 5  is a schematic representation of the line trace of energy in an embodiment of a wide field of view optical assembly. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     FIG. 1  is a schematic representation of the combined line trace of energy in a first embodiment of an imaging optical apparatus  100  with four assemblies. A NFOV FLIR optical assembly  102  and a WFOV FLIR optical assembly  104  image the thermal signature of an object. A See Spot optical assembly  106  superimposes a laser spot image on the NFOV FLIR image and can be used to select a hit point on an imaged object. “See Spot” is a term devised to describe an ability to image the laser spot on the same focal plane as the image (e.g., 3-5 μm image), and display both images simultaneously to the operator. A Range Finder optical assembly  108  collects laser energy and images the energy in a range receiver module. 
   In the imaging apparatus shown, incident energy  110  is collected at both a first aperture  112  and a second aperture  114 , manipulated by a plurality of optically significant surfaces  116 , and the images from three of the four assemblies are projected on one detector  118 . As used herein, optically significant surface is any surface profile that transmits, reflects, or manipulates a desired wavelength of energy and shapes the wavefront of energy. Examples of optically significant surfaces include flat surfaces, spherical surfaces, aspherical surfaces, surface relief holographic gratings (kinoform), and coated or noncoated surfaces. 
   In the exemplary embodiment of  FIG. 1 , incident energy  110  is collected by the first aperture  112 , is manipulated by a plurality of optically significant surfaces  116  in a narrow field of view (NFOV) optical assembly  102  and a See Spot optical assembly  106  to project at least a portion of the incident radiation  110  on a first detector  118 . At least a portion of the incident energy  110  collected by the first aperture  112  is manipulated by a plurality of optically significant surfaces  116  in a Range Finder optical assembly  108  to project at least a portion of the incident radiation  110  on a second detector  118 . Additionally, incident energy  110  collected by the second aperture  114  is manipulated by a plurality of optically significant surfaces  116  in a wide field of view (WFOV) optical assembly  104  to project at least a portion of the incident radiation  110  on the first detector  118 . 
   In the exemplary embodiment shown in  FIG. 1 , three of the four assemblies share a common aperture. Specifically, the NFOV FLIR, See Spot, and Range Finder apertures have been combined into a first aperture  112 . The WFOV FLIR assembly has a separate, second aperture  114 . The WFOV FLIR field of view of the imaging optical apparatus  100  is selected by inserting a fold mirror  122  into the NFOV path. 
     FIG. 2  is an exemplary embodiment of a narrow field of view (NFOV) optical assembly  200  showing a schematic representation of the line trace of energy. Incident radiation  202  sequentially interacts with a primary mirror  204  followed by a secondary mirror  206 . In the exemplary embodiment shown, the primary mirror  204  is an aspheric surface and the secondary mirror  206  is an aspheric surface. Incident thermal radiation is reflected off the first surface  208  of the primary mirror  204  and the first surface  210  of the secondary mirror  206  by a coating  212  that reflects the desired FLIR wavelengths. Additionally, the coating can transmit wavelengths that are not within the desired FLIR ranges. 
   Following the secondary mirror  206  in the optical path, incident radiation  202  enters the relay optical subassembly  214  and interacts with a series of optically significant surfaces  216  that manipulate the incident radiation and project the wavefront of energy on a first detector  218  at the focal distance. In the exemplary embodiment shown in  FIG. 2 , the relay optical subassembly  214  has a series of five optically significant surfaces. A first relay lens  220  and a second relay lens  222  sequentially receive incident radiation  202  from the secondary mirror  206  and transmit it through a first relay aspheric lens  224  and a second relay aspheric lens  226  followed by a relay exit lens  228 . The first relay lens  220  is coated on the first surface  230 , allowing desired FLIR and See Spot wavelengths to be transmitted. Incident radiation  202  passes through a warm filter  232  and a cold filter  234  and projects on the first detector  218  located at the focal distance. Both the warm filter  232  and the cold filter  234  assist in reducing noise in the system, the cold filter  234  from its location inside the cold space of the apparatus; the warm filter  232  from its location outside the cold space. 
   In operation, the NFOV assembly  200  forms an intermediate image from received incident FLIR energy that is then relayed by the relay optical subassembly  214  to the first detector  218 . In the exemplary embodiment, the FLIR energy is 3.5-5 μm passively received from the thermal signature of an object within the field of view (FOV). The FLIR energy is sequentially reflected at the first surface  208  of the primary mirror  204  and the first surface  210  of the secondary mirror  206  to form the intermediate image. Obscuration caused by the secondary mirror  206  is minimized by placing the relay optical subassembly  214  to image the aperture stop on the secondary mirror  206 . 
   In accordance with exemplary embodiments, an intermediate image of a high energy source anywhere within the system field of view will not damage any coatings or lens substrate. 
     FIG. 3  is an exemplary embodiment of a See Spot optical assembly  300  showing a schematic representation of the line trace of energy. Incident energy  302  enters through the first aperture of the imaging optical apparatus, is reflected and/or refracted depending on wavelength by the primary mirror  304  and is reflected and/or refracted depending on wavelength by the secondary mirror  306 , which has two elements, a first element  308  and a second element  310 . 
   In an exemplary embodiment, a single primary mirror with a rugate filter deposited on the rear surface can be used to reflect only the laser energy contained within the energy incident upon the primary mirror. Alternately, the primary mirror can be a split primary mirror. For example, the primary mirror can be split into two elements which are, for example, connected together (e.g., bonded with cement), with a narrow band coating being deposited on the interior or on the cemented surfaces, and a simple reflector deposited on the rear surface. 
   The split primary mirror  304  and the secondary mirror  306  of the exemplary embodiments are Mangin mirrors. Generally, Mangin mirrors allow energy of a desired wavelength (λ) to transmit through and reflect off a back surface of the optical element while blocking wavelengths other than the desired wavelength. In the exemplary embodiments shown, both the primary mirror  304  and the secondary mirror  306  have a coating  312 ,  314  on the respective first surfaces  316 ,  318  that reflect FLIR thermal energy and the Range Finder wavelength (i.e., in the examples shown, 3.5-5.1 μm and 1.58 μm, respectively) while allowing transmission of, among other wavelengths, the See Spot wavelength (i.e., in the examples shown, 1.064 μm). Transmitted See Spot wavelengths are transmitted by the coating  312 ,  314  and reflect at the second surface  320  of the primary mirror  304  and the second surface  322  of the second element  310  of the secondary mirror  306 . For example, only the See Spot wavelength is reflected back through the two elements of the secondary mirror, creating an intermediate image that enters the relay optical subassembly  324 . Here, a two element secondary mirror is used to match the focal lengths of the FLIR and See Spot optical assemblies so that the image size of each assembly is matched pixel by pixel, within the boresightable range, as the image moves off axis. The two elements  308 ,  310  of the secondary mirror  306  have an aperture  326  positioned substantially at the radial centerline. 
   Additionally, the primary mirror  304  is split into a cemented doublet with a narrow band filter  328  disposed at the cemented surface  330 . The narrow band filter  328  is selected to the desired wavelength associated with the See Spot optical assembly and allows incident radiation transmitted by the coating  312  to be restricted to the laser wavelength. In the exemplary embodiments, the desired See Spot wavelength is 1.064 μm and the band pass filter is 15 nanometers in bandwidth. Additionally, the curve on the buried surface of the primary mirror  304  is selected so that any energy reflected from the buried surface will not reach the first detector  332 . Radiation transmitted to the second surface  320  of the primary mirror  304  reflects off a silvered surface and passes a second time through the narrow band filter  328 . This process results in a double filtering of the See Spot wavelength. In an alternative embodiment, a narrow band reflective coating (called a Rugate filter) can be used on the back surface of the Mangin primary mirror in place of the cemented surface. 
   The relay optical subassembly  324  is common to both the NFOV optical assembly and the See Spot optical assembly  300 . After being transmitted by the five optically significant surfaces  334  of the relay optical subassembly  324 , incident energy  302  is transmitted through a warm filter  336  and a cold filter  338  and is projected at the focal distance upon the first detector  332 . 
     FIG. 4  is an exemplary embodiment of a range finder optical assembly  400  showing a schematic representation of the line trace of energy. Incident radiation  402  collected by the first aperture sequentially reflects off the first surface  404  of the primary mirror  406  and the first surface  408  of the secondary mirror  410  forming an intermediate image. The first surface  412  of the relay optical subassembly  414  is coated to reflect the desired range finder wavelength to be processed by the range finder optical assembly  400  while also transmitting the laser wavelength of the See Spot assembly and the FLIR wavelength of the NFOV assembly. The first surface  412  of the relay optical subassembly  414  acts like a tertiary mirror, reflecting the intermediate image to a mirror  416  located within the opening  418  in the radial center of the secondary mirror  410 . The mirror  416  is a reflective surface that folds the optical path to the side where a lens  420  collimates the incident energy  402  and two fold mirrors  422 ,  424  sequentially fold the optical path to an imaging lens  426  and a second detector  428 . In the exemplary embodiment shown in  FIG. 4 , the range finder optical assembly  400  manipulates incident radiation  402  in the 1.57 μm wavelength. 
     FIG. 5  is an exemplary embodiment of a wide field of view (WFOV) optical assembly  500  showing a schematic representation of the line trace of energy. Incident radiation  502  collected at a second aperture is manipulated by a series of optically significant surfaces  504  to project an image upon a first detector  506  at the focal plane. The first lens  508  receives the incident radiation  502  directly and transmits it to a second lens  510 . The second lens  510  is an aspheric surface which transmits the energy to a third lens  512 , followed sequentially by a fold mirror  514  and a WFOV relay optical subassembly  516 . 
   The WFOV relay optical subassembly  516  shares at least a portion of the elements of the relay optical subassembly of the NFOV assembly. A first aspheric lens  518  and a second aspheric lens  520  manipulate incident radiation  502  to direct the incident radiation  502  and fold the incident radiation  502  into the relay optical subassembly by a fold mirror  522  positioned in the optical path of the relay optical subassembly prior to the seconds lens. The incident radiation  502  thereafter follows an optical path which is common to the FLIR NFOV and See Spot optical paths. 
   Table 1 presents the operating characteristics for the imaging optical apparatus of the exemplary embodiment of  FIG. 1 , including information for the four assemblies. 
   
     
       
             
           
             
             
             
             
             
           
             
             
             
             
             
           
         
             
               TABLE 1 
             
           
           
             
                 
             
             
               General Operating Characteristics of the Four Optical Assemblies 
             
           
        
         
             
                 
               NFOV 
               WFOV 
               See Spot 
               Range Finder 
             
             
                 
                 
             
           
        
         
             
               Array Size (Pixels) 
               640 × 480 
               640 × 480 
               164 Dia 
               Single 
             
             
               Pixel Size 
               28μ 
               28μ 
               28μ 
               0.2 mm 
             
             
               Array Size (mm × mm) 
               17.92 × 13.44 
               17.92 × 13.44 
               0.28 × 0.28 
               0.2 × 0.2 
             
             
               Focal Length (mm) 
               269.2 
               117 
               269.2 
               150 
             
             
               FOV (Degrees) 
               3.8 × 2.8 
               8.8 × 6.5 
               1.0 Dia. 
               0.1 
             
             
               Operating Temp Range (° C.) 
               −37 to 49 
               −37 to 49 
               −37 to 49 
               −37 to 49 
             
             
               Aperture (Inches) 
               2.58 
               0.9 
               2.2 
               2.6 
             
             
               Obscuration (Area) 
               0.30 
               0.0 
               0.42 
               0.18 
             
             
               Transmission 
               71% 
               71% 
               65% 
               78% 
             
             
               Trans × (1-Obs loss) 
               50% 
               71% 
               42% 
               55% 
             
             
               Spectral Range (μm) 
               3.5-5.1 
               3.6-5.1 
               1.064 
               1.54-1.58 
             
             
                 
             
           
        
       
     
   
   The FLIR optics operate at the diffraction limit, meaning aberrations do not limit the optical performance, only the physical limitations of the apparatus limit the resolution. In the exemplary embodiment shown, the desired diffraction limited performance is achieved by utilizing four aspheric surfaces. Specifically, in the exemplary embodiment shown in  FIG. 1 , the four aspheric surfaces are the split primary mirror  124 , the secondary mirror  126 , the first NFOV relay lens  128  of the relay optical subassembly  130 , and the second NFOV relay lens  132  of the relay optical subassembly  130 . 
   An aspherical surface can be mathematically defined by: 
               H   ⁡     (   x   )       =           r   ⁢           ⁢     x   2         1   +       1   -         r   2     ⁡     (     k   +   1     )       ⁢     x   2               +     ∑       a   i     ⁢     x     (     2   +     2   ⁢   i       )       ⁢           ⁢   for   ⁢           ⁢   i         =     1   -&gt;   n               Eq   .           ⁢   1             
 
where r=radius of curvature, k=conic coefficient, and a, are aspheric coefficients.
 
   There is a correspondence between the conic coefficient of Eq. 1 and the geometric surface profile. Table 2 illustrates this correspondence. 
   
     
       
             
           
             
             
             
           
         
             
               TABLE 2 
             
           
           
             
                 
             
             
               Correspondence between k and the type of profile 
             
           
        
         
             
                 
               Value of k 
               Type of Profile 
             
             
                 
                 
             
             
                 
               &gt;0 
               ellipse 
             
             
                 
               =0 
               sphere 
             
             
                 
               −1 &lt; k &lt; 0 
               ellipse 
             
             
                 
               =−1 
               parabola 
             
             
                 
               &lt;−1 
               hyperbola 
             
             
                 
                 
             
           
        
       
     
   
   In practice, one skilled in the art could utilize commercially available lens design software to obtain suitable values for the coefficients of Eq. 1, including the aspherical coefficients. An example of one such lens design software package is “CODE V©” available from Optical Research Associates of Pasadena, Calif. One skilled in the art could input information including, for example, image size, focal distance, and energy distribution across the detector and determine the optimized values for the coefficients of Equation 1. 
   The optical imaging apparatus can stay in focus over a significant operating temperature range without any action on the part of the operator. This is called passive athermalization. In an exemplary embodiment, passive athermalization for the four assemblies of the optical imaging apparatus occurs from about −37 to about +49° C., or the four assemblies can be configured to stay in focus over any desired operating range. 
   Passive athermalization can be accomplished by proper selection of the materials used for mounts and optical elements. For example, in the exemplary embodiment shown in  FIG. 1 , the split primary mirror  124  is calcium fluoride (CaF 2 ) and the secondary mirror  126  is arsenic trisulfide (As 2 S 3 ). In the WFOV assembly  104 , the first lens  134  is CaF 2 , the first aspheric lens  136  is As 2 S 3 , and the second lens  138  is CaF 2 . 
   It has been found that CaF 2  and As 2 S 3  both have high coefficients of thermal expansion (CTE) and transmit the desired wavelength of energy for the FLIR system. In the exemplary embodiment shown, this wavelength is 1.064 μm. An additional advantage of CaF 2  and As 2 S 3  is the ability to diamond turn precise optically significant surfaces. Finally, the CaF 2  and As 2 S 3  materials are combined with aluminum (Al) housings to passively athermalize the NFOV, See Spot, and WFOV optical paths. 
   Material selection was also conducted for the optically significant surfaces of the relay optical subassembly  130  and the WFOV relay optical subassembly  140 . In the relay optical subassembly  130 , the first lens  142  and the relay exit lens  144  are CaF 2 . The second lens  146 , the first aspheric surface  128 , and are the second aspheric surface  148  are zinc selenide (ZnSe). Both the second aspheric surface  148  and the relay exit lens  144  are common to both the relay optical subassembly  130  and the WFOV relay optical subassembly  140 . Additional materials for the WFOV relay optical subassembly  140  are a first lens  150  made of silicon (Si) and an aspheric surface  152  of ZnSe. The warm filter  156  is a chalcogenide glass. Examples of chalcogenide glasses include arsenic selenide, arsenic selenide telluride, and “AMTIR-1,” which is available from Amorphous Materials Inc. of Richardson, Tex. 
   The path of the incident radiation in at least a portion of the See Spot optical assembly is common with the NFOV optical assembly components. By selection of suitable materials, the desired first laser energy, for example, the laser energy of the See Spot assembly, is allowed to be transmitted through the primary and secondary mirrors creating a partially independent path for the desired laser energy. The partially independent path provides independent parameters that can be used to focus and boresight the first laser image, for example, the See Spot image, to the FLIR image. 
   The optical imaging apparatus collects, manipulates, and detects multiple wavelengths of interest. In the exemplary embodiment shown, the optical imaging apparatus has multiple wavelengths of interest, including 1.064 μm (designator wavelength), 1.57 μm (ranging wavelength), and 3.5-5.1 μm (NFOV and WFOV FLIR). The wavelengths or interest can be independently filtered to produce the desired bandwidth. For example, the 1.064 μm wavelength has a 15 nm FWHM (i.e., 1.064 μm±7.5 nm). 
   Referring to  FIG. 1 , the first detector  118  is positioned in alignment with the NFOV, See Spot and WFOV components of the optical imaging apparatus  100  about the axis X-X′ at a focal length distance from the relay exit lens  144 , at a coincident focal plane to at least two wavelengths manipulated and transmitted by the optical imaging apparatus  100 . The elements of the relay optical subassembly  130  utilized by the WFOV FLIR assembly  104  are also located in alignment with the first detector  118  about the common axis X-X′. Examples of designs for optically significant surfaces that can manipulate at least two distinct wavelengths of energy are disclosed in commonly owned U.S. patent application Ser. No. 09/998,660 entitled “Multiband, Single Element Wide Field of View Infrared Imaging System”, filed on even date herewith, the disclosure of which is incorporated herein by reference. 
   The first detector  118  can respond to and discriminate at least two, or any number of wavelengths of incident energy in the desired spectrum of interest, such as wavelengths at 1-6 μm. The first detector  118  processes the wavelengths to produce multiple waveband detection capability within a single detector. In one embodiment, the detector  118  concurrently collects radiation from multiple, adjacent spectral radiation bands. An example of such a detector is a detector used in “hyperspectral imaging” as disclosed in co-assigned U.S. Pat. No. 6,180,990 B1, issued to Claiborne et al., the disclosure of which is incorporated herein by reference. A second example of a detector suitable for use in the embodiment of  FIG. 1  is an InSb detector. InSb defines the available resolution and pixel size of the system. 
   This invention has direct application to other wide field of view multiband uses, including but not limited to dual band navigation, advanced missile seekers and chemical agent detection. 
   In one aspect, an exemplary imaging optical apparatus  100  may have four optical assemblies (NFOV FLIR, WFOV FLIR, See Spot, and Range Finder) having the prescription contained in the following Tables 3 through 35, in which the surface identification correlates to the surfaces encountered by an incident radiation in the corresponding wavelength for each optical assembly as it travels from the respective aperture to the respective detector. 
   
     
       
             
           
             
             
             
             
             
           
             
             
             
             
             
           
         
             
               TABLE 3 
             
           
           
             
                 
             
             
               NFOV FLIR 
             
           
        
         
             
               Surface 
               Radius 
               Thickness 
               Medium 
               RN 
             
             
                 
             
           
        
         
             
               0 
               0.00000000 
                 1.73600000e+20 
               AIR 
                 
             
             
               1 
               0.00000000 
               3.00000000 
               AIR 
             
             
               2 
               −9.32272495 
               −2.70000000   
               REFL 
             
             
               3 
               −16.33751858 
               1.70000000 
               REFL 
             
             
               4 
               3.50000000 
               0.10000000 
               CaF 2   
               1.406725 
             
             
               5 
               12.41987651 
               0.46773010 
               AIR 
             
             
               6 
               25.21782007 
               0.10000000 
               ZnSe 
               2.432024 
             
             
               7 
               2.48592402 
               0.45000000 
               AIR 
             
             
               8 
               −0.58824474 
               0.15000000 
               ZnSe 
               2.432024 
             
             
               9 
               −0.51270916 
               1.20000000 
               AIR 
             
             
               10 
               0.37587767 
               0.20000000 
               ZnSe 
               2.432024 
             
             
               11 
               2.79242889 
               0.01000000 
               AIR 
             
             
               12 
               0.42040944 
               0.10000000 
               CaF 2   
               1.406725 
             
             
               13 
               0.27000000 
               0.25000000 
               AIR 
             
             
               14 
               0.00000000 
               0.02000000 
               AMTIR 1 
               2.512965 
             
             
               15 
               0.00000000 
               0.14000000 
               AMTIR 1 
               2.512965 
             
             
               16 
               0.00000000 
               0.02217000 
               AIR 
             
             
               17 
               0.00000000 
               0.02000000 
               Sapphire 
               1.661534 
             
             
               18 
               0.00000000 
               0.03500000 
               AIR 
             
             
               19 
               0.00000000 
               0.00000000 
               AIR 
             
             
               20 
               0.00000000 
               0.02000000 
               Sapphire 
               1.661534 
             
             
               21 
               0.00000000 
               0.95000000 
               AIR 
             
             
               22 
               0.00000000 
               0.03000000 
               Silicon 
               3.424290 
             
             
               23 
               0.00000000 
               1.75000000 
               AIR 
             
             
               24 
               0.00000000 
               −1.75000000   
               AIR 
             
             
               25 
               0.00000000 
               0.00000000 
               AIR 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
           
             
             
             
             
             
             
           
         
             
               TABLE 4 
             
           
           
             
                 
             
             
               Conic Coefficient And Aspheric Data For NFOV FLIR 
             
           
        
         
             
               Surface 
               k 
               a 4   
               a 5   
               a 6   
               a 7   
             
             
                 
             
           
        
         
             
               2 
               −1.71138E+00   
               1.27996E−04 
               −9.16967E−05   
                 5.24339E−05 
               −9.17877E−06 
             
             
               3 
               0.00000E+00 
               5.06262E−03 
               5.02414E−03 
               −1.96881E−02 
                 3.01018E−02 
             
             
               9 
               0.00000E+00 
               3.83254E−02 
               1.67480E+00 
               −2.90780E−01 
               −2.55259E−02 
             
             
               11 
               0.00000E+00 
               2.59380E−01 
               6.80518E−02 
               −6.75884E−01 
                 1.36421E+00 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
             
           
             
             
             
             
             
             
             
           
         
             
               TABLE 5 
             
           
           
             
                 
             
             
               Refractive Indices for NFOV FLIR 
             
           
        
         
             
               Surface 
               N1 
               N2 
               N3 
               N4 
               N5 
               ABBE 
             
             
                 
             
           
        
         
             
               4 
               1.406725 
               1.413222 
               1.397784 
               1.000000 
               1.000000 
               26.346020 
             
             
               6 
               2.432024 
               2.434727 
               2.429151 
               1.000000 
               1.000000 
               256.826705 
             
             
               8 
               2.432024 
               2.434727 
               2.429151 
               1.000000 
               1.000000 
               256.826705 
             
             
               10 
               2.432024 
               2.434727 
               2.429151 
               1.000000 
               1.000000 
               256.826705 
             
             
               12 
               1.406725 
               1.413222 
               1.397784 
               1.000000 
               1.000000 
               26.346020 
             
             
               14 
               2.512965 
               2.515686 
               2.510511 
               1.000000 
               1.000000 
               292.360453 
             
             
               15 
               2.512965 
               2.515686 
               2.510511 
               1.000000 
               1.000000 
               292.360453 
             
             
               17 
               1.661534 
               1.691581 
               1.617929 
               1.000000 
               1.000000 
               8.981895 
             
             
               20 
               1.661534 
               1.691581 
               1.617929 
               1.000000 
               1.000000 
               8.981895 
             
             
               22 
               3.424290 
               3.427537 
               3.421964 
               1.000000 
               1.000000 
               435.001831 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
           
             
             
             
             
             
             
           
         
             
               TABLE 6 
             
           
           
             
                 
             
             
               Wavelength Number For NFOV FLIR 
             
           
        
         
             
               WAVL NBR 
               1 
               2 
               3 
               4 
               5 
             
             
                 
             
           
        
         
             
               Wavelength 
               4.30000 
               3.60000 
               5.10000 
               0.0000 
               0.0000 
             
             
               Spectral Wt 
               1.0000 
               1.0000 
               1.0000 
               1.0000 
               1.0000 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
           
         
             
               TABLE 7 
             
             
                 
             
             
               Reference Object for NFOV FLIR 
             
             
                 
             
           
           
             
                 
             
           
        
         
             
                 
                 
               OBJ 
               REF 
               IMG 
             
             
               REF OBJ HT 
               REF AP HT 
               SURF 
               SURF 
               SURF 
             
             
                 
             
             
               −0.742776E+19 
               0.12000 
               0 
               19 
               25 
             
             
                 
             
             
               (2.4500 DG) 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
           
         
             
               TABLE 8 
             
           
           
             
                 
             
             
               Aperture Stop at Surf 19 of NFOV FLIR 
             
           
        
         
             
               EFL 
               BF 
               F/NBR 
               Length 
               GIH 
             
             
                 
             
             
               −10.4107 
               −1.7500 
               4.03 
               8.0149 
               −0.4529 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
           
             
             
             
             
             
             
           
         
             
               TABLE 9 
             
           
           
             
                 
             
             
               Standard And Boolean Aperture Data For NFOV FLIR 
             
           
        
         
             
               Surface 
               Type 
               CAY 
               CAX 
               Y-Offset 
               X-Offset 
             
             
                 
             
           
        
         
             
               1 
               CIR 
               1.97167 
                 
               0.00000 
               0.00000 
             
             
               1 COBS 
               CIR 
               0.60000 
                 
               0.00000 
               0.00000 
             
             
               2 
               CIR 
               1.40080 
                 
               0.00000 
               0.00000 
             
             
               3 
               CIR 
               0.57350 
                 
               0.00000 
               0.00000 
             
             
               4 
               CIR 
               0.27577 
                 
               0.00000 
               0.00000 
             
             
               5 
               CIR 
               0.27337 
                 
               0.00000 
               0.00000 
             
             
               6 
               CIR 
               0.26042 
                 
               0.00000 
               0.00000 
             
             
               7 
               CIR 
               0.25850 
                 
               0.00000 
               0.00000 
             
             
               8 
               CIR 
               0.32486 
                 
               0.00000 
               0.00000 
             
             
               9 
               CIR 
               0.37471 
                 
               0.00000 
               0.00000 
             
             
               10 
               CIR 
               0.46881 
                 
               0.00000 
               0.00000 
             
             
               11 
               CIR 
               0.43538 
                 
               0.00000 
               0.00000 
             
             
               12 
               CIR 
               0.33965 
                 
               0.00000 
               0.00000 
             
             
               13 
               CIR 
               0.25503 
                 
               0.00000 
               0.00000 
             
             
               14 
               CIR 
               0.20085 
                 
               0.00000 
               0.00000 
             
             
               15 
               CIR 
               0.19677 
                 
               0.00000 
               0.00000 
             
             
               16 
               CIR 
               0.16824 
                 
               0.00000 
               0.00000 
             
             
               17 
               CIR 
               0.15664 
                 
               0.00000 
               0.00000 
             
             
               18 
               CIR 
               0.15030 
                 
               0.00000 
               0.00000 
             
             
               19 
               CIR 
               0.12000 
                 
               0.00000 
               0.00000 
             
             
               20 
               CIR 
               0.13000 
                 
               0.00000 
               0.00000 
             
             
               21 
               CIR 
               0.13386 
                 
               0.00000 
               0.00000 
             
             
               22 
               CIR 
               0.44932 
                 
               0.00000 
               0.00000 
             
             
               23 
               CIR 
               0.45210 
                 
               0.00000 
               0.00000 
             
             
               24 
               CIR 
               1.46710 
                 
               0.00000 
               0.00000 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
           
             
             
             
             
             
           
         
             
               TABLE 10 
             
           
           
             
                 
             
             
               See Spot 
             
           
        
         
             
               Surface 
               Radius 
               Thickness 
               Medium 
               RN 
             
             
                 
             
           
        
         
             
               0 
               0.00000000 
                    1.73600000E+20 
               AIR 
                 
             
             
               1 
               0.00000000 
               3.00000000 
               AIR 
             
             
               2 
               −9.32272495 
               0.30000000 
               CaF 2   
               1.428534 
             
             
               3 
               −11.32355167 
               −0.30000000   
               REFL 
             
             
               4 
               −9.32272495 
               −2.70000000   
               AIR 
             
             
               5 
               −16.33751858 
               −0.13000000   
               As 2 S 3   
               2.469290 
             
             
               6 
               −8.74235769 
               −0.13000000   
               AIR 
             
             
               7 
               3.89857691 
               −0.13000000   
               As 2 S 3   
               2.469290 
             
             
               8 
               5.52202743 
               0.13000000 
               REFL 
             
             
               9 
               3.89857691 
               0.13000000 
               AIR 
             
             
               10 
               −8.74235769 
               0.13000000 
               As 2 S 3   
               2.469290 
             
             
               11 
               −16.33751858 
               1.70000000 
               AIR 
             
             
               12 
               3.50000000 
               0.10000000 
               CaF 2   
               1.428534 
             
             
               13 
               12.41987651 
               0.46773010 
               AIR 
             
             
               14 
               25.21782007 
               0.10000000 
               ZnSe 
               2.482134 
             
             
               15 
               2.48592402 
               0.45000000 
               AIR 
             
             
               16 
               −0.58824474 
               0.15000000 
               ZnSe 
               2.482134 
             
             
               17 
               −0.51270916 
               1.20000000 
               AIR 
             
             
               18 
               0.73587767 
               0.20000000 
               ZnSe 
               2.482134 
             
             
               19 
               2.79242889 
               0.01000000 
               AIR 
             
             
               20 
               0.42040944 
               0.10000000 
               CaF 2   
               1.428534 
             
             
               21 
               0.27000000 
               0.25000000 
               AIR 
             
             
               22 
               0.00000000 
               0.02000000 
               AMTIR 1 
               2.593302 
             
             
               23 
               0.00000000 
               0.14000000 
               AMTIR 1 
               2.593302 
             
             
               24 
               0.00000000 
               0.02000000 
               AIR 
             
             
               25 
               0.00000000 
               0.02000000 
               Sapphire 
               1.754553 
             
             
               26 
               0.00000000 
               0.03500000 
               AIR 
             
             
               27 
               0.00000000 
               0.00000000 
               AIR 
             
             
               28 
               0.00000000 
               0.02000000 
               Sapphire 
               1.754553 
             
             
               29 
               0.00000000 
               0.95000000 
               AIR 
             
             
               30 
               0.00000000 
               0.03000000 
               Silicon 
               3.486409 
             
             
               31 
               0.00000000 
               1.75000000 
               AIR 
             
             
               32 
               0.00000000 
               −1.75000000   
               AIR 
             
             
               33 
               0.00000000 
               0.00000000 
               AIR 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
           
             
             
             
             
             
             
           
         
             
               TABLE 11 
             
           
           
             
                 
             
             
               Conic Coefficient and Aspheric Data for See Spot 
             
           
        
         
             
               Surface 
               k 
               a 4   
               a 5   
               a 6   
               a 7   
             
             
                 
             
           
        
         
             
               2 
               −1.71138E+00   
               1.27996E−04 
               −9.16967E−05   
                 5.24339E−05 
               −9.17877E−06   
             
             
               4 
               −1.71138E+00   
               1.27996E−04 
               −9.16967E−05   
                 5.24339E−05 
               −9.17877E−06   
             
             
               5 
               0.00000E+00 
               5.06262E−03 
               5.02414E−03 
               −1.96881E−02 
               3.01018E−02 
             
             
               8 
               0.00000E+00 
               5.18868E−03 
               −2.53115E−03   
                 2.13393E−03 
               5.46809E−03 
             
             
               11 
               0.00000E+00 
               5.06262E−03 
               5.02414E−03 
               −1.96881E−02 
               3.01018E−02 
             
             
               17 
               0.00000E+00 
               3.83254E−02 
               1.67480E+00 
               −2.90780E−01 
               −2.55259E−02   
             
             
               19 
               0.00000E+00 
               2.59380E−01 
               6.80518E−02 
               −6.75884E−01 
               1.36421E+00 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
             
           
             
             
             
             
             
             
             
           
         
             
               TABLE 12 
             
           
           
             
                 
             
             
               Refractive Indices for See Spot 
             
           
        
         
             
               Surface 
               N1 
               N2 
               N3 
               N4 
               N5 
               ABBE 
             
             
                 
             
           
        
         
             
               2 
               1.428534 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               0.428534 
             
             
               5 
               2.469290 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               1.469290 
             
             
               7 
               2.469290 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               1.469290 
             
             
               10 
               2.469290 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               1.469290 
             
             
               12 
               1.428534 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               0.428534 
             
             
               14 
               2.482134 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               1.482134 
             
             
               16 
               2.482134 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               1.482134 
             
             
               18 
               2.482134 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               1.482134 
             
             
               20 
               1.428534 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               0.428534 
             
             
               22 
               2.593302 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               1.593302 
             
             
               23 
               2.593302 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               1.593302 
             
             
               25 
               1.754553 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               0.754553 
             
             
               28 
               1.754553 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               0.754553 
             
             
               30 
               3.486409 
               1.000000 
               1.000000 
               1.000000 
               1.000000 
               2.486409 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
           
             
             
             
             
             
             
           
         
             
               TABLE 13 
             
           
           
             
                 
             
             
               Wavelength Number for See Spot 
             
           
        
         
             
               WAVL NBR 
               1 
               2 
               3 
               4 
               5 
             
             
                 
             
           
        
         
             
               Wavelength 
               1.06400 
               0.00000 
               0.00000 
               0.00000 
               0.00000 
             
             
               Spectral Wt 
               1.0000 
               1.0000 
               1.0000 
               1.0000 
               1.0000 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
           
         
             
               TABLE 14 
             
           
           
             
                 
             
             
               Reference Object for See Spot 
             
           
        
         
             
               REF OBJ HT 
               REF AP HT 
               OBJ SURF 
               REF SURF 
               IMG SURF 
             
             
                 
             
             
               −0.151498E+19 (0.5000 DG) 
               0.56998 
               0 
               5 
               33 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
           
         
             
               TABLE 15 
             
           
           
             
                 
             
             
               Aperture Stop at Surface 5 of See Spot 
             
           
        
         
             
               EFL 
               EF 
               F/NBR 
               Length 
               GIH 
             
             
                 
             
             
               −10.8617 
               −1.7500 
               4.20 
               8.1027 
               −0.0922 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
           
             
             
             
             
             
             
           
         
             
               TABLE 16 
             
           
           
             
                 
             
             
               Standard and Boolean Aperture Data for See Spot 
             
           
        
         
             
               Surface 
               Type 
               CAY 
               CAX 
               Y-Offset 
               X-Offset 
             
             
                 
             
           
        
         
             
               1 
               CIR 
               1.97167 
                 
               0.00000 
               0.00000 
             
             
               1 COBS 
               CIR 
               0.60000 
                 
               0.00000 
               0.00000 
             
             
               2 
               CIR 
               1.35325 
                 
               0.00000 
               0.00000 
             
             
               3 
               CIR 
               1.35325 
                 
               0.00000 
               0.00000 
             
             
               4 
               CIR 
               1.35325 
                 
               0.00000 
               0.00000 
             
             
               5 
               CIR 
               0.56998 
                 
               0.00000 
               0.00000 
             
             
               6 
               CIR 
               0.56822 
                 
               0.00000 
               0.00000 
             
             
               7 
               CIR 
               0.55973 
                 
               0.00000 
               0.00000 
             
             
               8 
               CIR 
               0.56514 
                 
               0.00000 
               0.00000 
             
             
               9 
               CIR 
               0.55973 
                 
               0.00000 
               0.00000 
             
             
               10 
               CIR 
               0.56822 
                 
               0.00000 
               0.00000 
             
             
               11 
               CIR 
               0.56998 
                 
               0.00000 
               0.00000 
             
             
               12 
               CIR 
               0.28593 
                 
               0.00000 
               0.00000 
             
             
               13 
               CIR 
               0.28149 
                 
               0.00000 
               0.00000 
             
             
               14 
               CIR 
               0.25408 
                 
               0.00000 
               0.00000 
             
             
               15 
               CIR 
               0.25064 
                 
               0.00000 
               0.00000 
             
             
               16 
               CIR 
               0.28793 
                 
               0.00000 
               0.00000 
             
             
               17 
               CIR 
               0.35777 
                 
               0.00000 
               0.00000 
             
             
               18 
               CIR 
               0.46162 
                 
               0.00000 
               0.00000 
             
             
               19 
               CIR 
               0.42779 
                 
               0.00000 
               0.00000 
             
             
               20 
               CIR 
               0.33370 
                 
               0.00000 
               0.00000 
             
             
               21 
               CIR 
               0.25053 
                 
               0.00000 
               0.00000 
             
             
               22 
               CIR 
               0.19825 
                 
               0.00000 
               0.00000 
             
             
               23 
               CIR 
               0.19431 
                 
               0.00000 
               0.00000 
             
             
               24 
               CIR 
               0.16671 
                 
               0.00000 
               0.00000 
             
             
               25 
               CIR 
               0.15558 
                 
               0.00000 
               0.00000 
             
             
               26 
               CIR 
               0.14947 
                 
               0.00000 
               0.00000 
             
             
               27 
               CIR 
               0.12000 
                 
               0.00000 
               0.00000 
             
             
               28 
               CIR 
               0.13000 
                 
               0.00000 
               0.00000 
             
             
               29 
               CIR 
               0.13359 
                 
               0.00000 
               0.00000 
             
             
               30 
               CIR 
               0.42617 
                 
               0.00000 
               0.00000 
             
             
               31 
               CIR 
               0.42878 
                 
               0.00000 
               0.00000 
             
             
               32 
               CIR 
               1.40208 
                 
               0.00000 
               0.00000 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
           
             
             
             
             
             
           
         
             
               TABLE 17 
             
           
           
             
                 
             
             
               Pickups for See Spot 
             
           
        
         
             
               Surface 
               Type 
               J 
               A 
               B 
             
             
                 
             
           
        
         
             
               3 
               TH 
               2 
               −1.0000 
               0.000000 
             
             
               3 
               CLAP 
               2 
               1.0000 
               0.000000 
             
             
               4 
               PRO 
               2 
             
             
               4 
               CLAP 
               2 
               1.0000 
               0.000000 
             
             
               8 
               TH 
               7 
               −1.0000 
               0.000000 
             
             
               9 
               CV 
               7 
               1.0000 
               0.000000 
             
             
               9 
               TH 
               6 
               −1.0000 
               0.000000 
             
             
               9 
               CLAP 
               7 
               1.0000 
               0.000000 
             
             
               9 
               GLASS 
               6 
             
             
               10 
               CV 
               6 
               1.0000 
               0.000000 
             
             
               10 
               TH 
               5 
               −1.0000 
               0.000000 
             
             
               10 
               CLAP 
               6 
               1.0000 
               0.000000 
             
             
               10 
               GLASS 
               5 
             
             
               11 
               PRO 
               5 
             
             
               11 
               CLAP 
               5 
               1.0000 
               0.000000 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
           
             
             
             
             
             
           
         
             
               TABLE 18 
             
           
           
             
                 
             
             
               WFOV FLIR 
             
           
        
         
             
               Surface 
               Radius 
               Thickness 
               Medium 
               RN 
             
             
                 
             
           
        
         
             
               0 
               0.00000000 
                    1.73600000E+20 
               AIR 
                 
             
             
               1 
               0.00000000 
               −3.07544775   
               AIR 
             
             
               2 
               −1.29093302 
               0.15000000 
               CaF 2   
               1.406725 
             
             
               3 
               −1.53198437 
               0.80000000 
               AIR 
             
             
               4 
               6.25468909 
               0.20000000 
               As 2 S 3   
               2.409960 
             
             
               5 
               −14.66270796 
               0.50183000 
               AIR 
             
             
               6 
               11.12454416 
               0.20000000 
               CaF 2   
               1.406725 
             
             
               7 
               13.00013306 
               0.97500000 
               AIR 
             
             
               8 
               0.00000000 
               0.00000000 
               REFL 
             
             
               9 
               0.00000000 
               −1.32500000   
               AIR 
             
             
               10 
               −0.52179500 
               −0.18000000   
               Silicon 
               3.424290 
             
             
               11 
               −0.37991681 
               −0.45000000   
               AIR 
             
             
               12 
               1.04437275 
               −0.20000000   
               ZnSe 
               2.432024 
             
             
               13 
               0.69368231 
               −0.64500000   
               AIR 
             
             
               14 
               0.00000000 
               0.00000000 
               REFL 
             
             
               15 
               0.00000000 
               0.45500000 
               AIR 
             
             
               16 
               0.73587767 
               0.20000000 
               ZnSe 
               2.432024 
             
             
               17 
               2.79242889 
               0.01000000 
               AIR 
             
             
               18 
               0.42049440 
               0.10000000 
               CaF 2   
               1.406725 
             
             
               19 
               0.27000000 
               0.25000000 
               AIR 
             
             
               20 
               0.00000000 
               0.02000000 
               AMTIR 1 
               2.512965 
             
             
               21 
               0.00000000 
               0.14000000 
               AMTIR 1 
               2.512965 
             
             
               22 
               0.00000000 
               0.02000000 
               AIR 
             
             
               23 
               0.00000000 
               0.02000000 
               Sapphire 
               1.661534 
             
             
               24 
               0.00000000 
               0.03500000 
               AIR 
             
             
               25 
               0.00000000 
               0.00000000 
               AIR 
             
             
               26 
               0.00000000 
               0.02000000 
               Sapphire 
               1.661534 
             
             
               27 
               0.00000000 
               0.95000000 
               AIR 
             
             
               28 
               0.00000000 
               0.03000000 
               Silicon 
               3.424290 
             
             
               29 
               0.00000000 
               1.75000000 
               AIR 
             
             
               30 
               0.00000000 
               −1.75000000   
               AIR 
             
             
               31 
               0.00000000 
               0.00000000 
               AIR 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
           
             
             
             
             
             
             
           
         
             
               TABLE 19 
             
           
           
             
                 
             
             
               Conic Coefficient and Aspheric Data for WFOV FLIR 
             
           
        
         
             
               Surface 
               k 
               a 4   
               a 5   
               a 6   
               a 7   
             
             
                 
             
           
        
         
             
               3 
               0.00000E+00 
               6.18164E−03 
               −1.84263E−02 
                 2.89468E−02 
               −2.31931E−02 
             
             
               13 
               0.00000E+00 
               −5.89448E−02   
               −4.04862E−01 
               −5.48331E−02 
               −7.52782E−03 
             
             
               17 
               0.00000E+00 
               2.59380E−01 
                 6.80518E−02 
               −6.75884E−01 
                 1.36421E+00 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
             
           
             
             
             
             
             
             
             
           
         
             
               TABLE 20 
             
           
           
             
                 
             
             
               Refractive Indices for WFOV FLIR 
             
           
        
         
             
               Surface 
               N1 
               N2 
               N3 
               N4 
               N5 
               ABBE 
             
             
                 
             
           
        
         
             
               2 
               1.406725 
               1.413222 
               1.397784 
               1.000000 
               1.000000 
               26.346020 
             
             
               4 
               2.409960 
               2.412932 
               2.406851 
               1.000000 
               1.000000 
               231.862040 
             
             
               6 
               1.406725 
               1.413222 
               1.397784 
               1.000000 
               1.000000 
               26.346020 
             
             
               10 
               3.424290 
               3.427537 
               3.421964 
               1.000000 
               1.000000 
               435.001831 
             
             
               12 
               2.432024 
               2.434727 
               2.429151 
               1.000000 
               1.000000 
               256.826705 
             
             
               16 
               2.432024 
               2.434727 
               2.429151 
               1.000000 
               1.000000 
               256.826705 
             
             
               18 
               1.406725 
               1.413222 
               1.397784 
               1.000000 
               1.000000 
               26.346020 
             
             
               20 
               2.512965 
               2.515686 
               2.510511 
               1.000000 
               1.000000 
               292.360453 
             
             
               21 
               2.512965 
               2.515686 
               2.510511 
               1.000000 
               1.000000 
               292.360453 
             
             
               23 
               1.661534 
               1.691581 
               1.617929 
               1.000000 
               1.000000 
               8.981895 
             
             
               26 
               1.661534 
               1.691581 
               1.617929 
               1.000000 
               1.000000 
               8.981895 
             
             
               28 
               3.424290 
               3.427537 
               3.421964 
               1.000000 
               1.000000 
               435.001831 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
           
             
             
             
             
             
             
           
             
             
             
             
             
             
           
         
             
               TABLE 21 
             
           
           
             
                 
             
             
               Wavelength Number for WFOV FLIR 
             
           
        
         
             
                 
               WAVL NBR 
             
           
        
         
             
                 
               1 
               2 
               3 
               4 
               5 
             
             
                 
                 
             
           
        
         
             
               Wavelength 
               4.30000 
               3.60000 
               5.10000 
               0.00000 
               0.00000 
             
             
               Spectral Wt 
               1.0000 
               1.0000 
               1.0000 
               1.0000 
               1.0000 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
           
         
             
               TABLE 22 
             
             
                 
             
             
               Reference Object for WFOV FLIR 
             
             
                 
             
           
           
             
                 
             
           
        
         
             
                 
                 
               OBJ 
               REF 
               IMG  
             
             
               REF OBJ HT 
               REF AP HT 
               SURF 
               SURF 
               SURF 
             
             
                 
             
             
               −0.170216E+20 
               0.12000 
               0 
               25 
               31 
             
             
               (5.6000 DG) 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
           
         
             
               TABLE 23 
             
           
           
             
                 
             
             
               Aperture Stop at Surface 25 Of WFOV FLIR 
             
           
        
         
             
               EFL 
               BF 
               F/NBR 
               Length 
               GIH 
             
             
                 
             
             
               −4.5398 
               −1.7500 
               −4.01 
               4.0268 
               −0.4471 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
             
           
             
             
             
             
             
             
             
           
         
             
               TABLE 24 
             
           
           
             
                 
             
             
               Tilt and Dec Data for WFOV FLIR 
             
           
        
         
             
               Surface 
               Type 
               YD 
               XD 
               Alpha 
               Beta 
               Gamma 
             
             
                 
             
           
        
         
             
               8 
               TILT 
               0.00000 
               0.00000 
               45.00000 
               0.00000 
               0.00000 
             
             
               9 
               TILT 
               0.00000 
               0.00000 
               45.00000 
               0.00000 
               0.00000 
             
             
               14 
               TILT 
               0.00000 
               0.00000 
               −45.00000 
               0.00000 
               0.00000 
             
             
               15 
               TILT 
               0.00000 
               0.00000 
               −45.00000 
               0.00000 
               0.00000 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
           
             
             
             
             
             
             
           
         
             
               TABLE 25 
             
           
           
             
                 
             
             
               Standard and Boolean Aperture Data for WFOV FLIR 
             
           
        
         
             
               Surface 
               Type 
               CAY 
               CAX 
               Y-Offset 
               X-Offset 
             
             
                 
             
           
        
         
             
               2 
               CIR 
               0.65987 
                 
               0.00000 
               0.00000 
             
             
               3 
               CIR 
               0.67570 
                 
               0.00000 
               0.00000 
             
             
               4 
               CIR 
               0.63859 
                 
               0.00000 
               0.00000 
             
             
               5 
               CIR 
               0.63140 
                 
               0.00000 
               0.00000 
             
             
               6 
               CIR 
               0.54177 
                 
               0.00000 
               0.00000 
             
             
               7 
               CIR 
               0.51534 
                 
               0.00000 
               0.00000 
             
             
               8 
               CIR 
               0.57312 
                 
               0.00000 
               0.00000 
             
             
               9 
               CIR 
               0.34719 
                 
               0.00000 
               0.00000 
             
             
               10 
               CIR 
               0.34343 
                 
               0.00000 
               0.00000 
             
             
               11 
               CIR 
               0.26472 
                 
               0.00000 
               0.00000 
             
             
               12 
               CIR 
               0.35003 
                 
               0.00000 
               0.00000 
             
             
               13 
               CIR 
               0.40306 
                 
               0.00000 
               0.00000 
             
             
               14 
               CIR 
               0.65361 
                 
               0.00000 
               0.00000 
             
             
               15 
               CIR 
               0.45003 
                 
               0.00000 
               0.00000 
             
             
               16 
               CIR 
               0.48848 
                 
               0.00000 
               0.00000 
             
             
               17 
               CIR 
               0.45502 
                 
               0.00000 
               0.00000 
             
             
               18 
               CIR 
               0.35952 
                 
               0.00000 
               0.00000 
             
             
               19 
               CIR 
               0.27496 
                 
               0.00000 
               0.00000 
             
             
               20 
               CIR 
               0.22076 
                 
               0.00000 
               0.00000 
             
             
               21 
               CIR 
               0.21669 
                 
               0.00000 
               0.00000 
             
             
               22 
               CIR 
               0.18819 
                 
               0.00000 
               0.00000 
             
             
               23 
               CIR 
               0.17660 
                 
               0.00000 
               0.00000 
             
             
               24 
               CIR 
               0.17028 
                 
               0.00000 
               0.00000 
             
             
               25 
               CIR 
               0.12000 
                 
               0.00000 
               0.00000 
             
             
               26 
               CIR 
               0.15000 
                 
               0.00000 
               0.00000 
             
             
               27 
               CIR 
               0.15382 
                 
               0.00000 
               0.00000 
             
             
               28 
               CIR 
               0.46790 
                 
               0.00000 
               0.00000 
             
             
               29 
               CIR 
               0.47106 
                 
               0.00000 
               0.00000 
             
             
               30 
               CIR 
               1.48476 
                 
               0.00000 
               0.00000 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
           
             
             
             
             
             
           
         
             
               TABLE 26 
             
           
           
             
                 
             
             
               RANGE FINDER 
             
           
        
         
             
               Surface 
               Radius 
               Thickness 
               Medium 
               RN 
             
             
                 
             
           
        
         
             
               0 
               0.00000000 
                    1.73600000E+20 
               AIR 
                 
             
             
               1 
               0.00000000 
               3.00000000 
               AIR 
             
             
               2 
               −9.32272495 
               −2.70000000   
               REFL 
             
             
               3 
               −16.33751858 
               1.70000000 
               REFL 
             
             
               4 
               3.50000000 
               −1.60000000   
               REFL 
             
             
               5 
               0.00000000 
               0.00000000 
               REFL 
             
             
               6 
               0.00000000 
               1.67730000 
               AIR 
             
             
               7 
               0.70467935 
               0.10000000 
               Silicon 
               3.476107 
             
             
               8 
               0.80032921 
               0.40270000 
               AIR 
             
             
               9 
               0.00000000 
               0.00000000 
               REFL 
             
             
               10 
               0.00000000 
               −0.75000000   
               AIR 
             
             
               11 
               0.00000000 
               0.00000000 
               REFL 
             
             
               12 
               0.00000000 
               2.25040000 
               AIR 
             
             
               13 
               0.49354312 
               0.10000000 
               Silicon 
               3.476107 
             
             
               14 
               0.73069589 
               0.34843982 
               AIR 
             
             
               15 
               0.00000000 
               0.20000000 
               Sapphire 
               1.745889 
             
             
               16 
               0.00000000 
               0.04000000 
               AIR 
             
             
               17 
               0.00000000 
               0.00000000 
               AIR 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
           
         
             
               TABLE 27 
             
           
           
             
                 
             
             
               Conic Coefficient and Aspheric Data for RANGE FINDER 
             
           
        
         
             
               Surface 
               k 
               a 4   
               a 5   
               a 6   
               a 7   
             
             
                 
             
             
               2 
               −1.71138E+00 
               1.27996E−04 
               −9.16967E−05 
               5.24339E−05 
               −9.17877E−06 
             
             
               3 
                 0.00000E+00 
               5.06262E−03 
                 5.02414E−03 
               −1.96881E−02   
                 3.01018E−02 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
             
           
             
             
             
             
             
             
             
           
         
             
               TABLE 28 
             
           
           
             
                 
             
             
               Refractive Indices For RANGE FINDER 
             
           
        
         
             
               Surface 
               N1 
               N2 
               N3 
               N4 
               N5 
               ABBE 
             
             
                 
             
           
        
         
             
               7 
               3.476107 
               3.478568 
               3.475321 
               1.000000 
               1.000000 
               762.638556 
             
             
               13 
               3.476107 
               3.478568 
               3.475321 
               1.000000 
               1.000000 
               762.638556 
             
             
               15 
               1.745889 
               1.746414 
               1.745713 
               1.000000 
               1.000000 
                    1.0651E+03 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
           
             
             
             
             
             
             
           
             
             
             
             
             
             
           
         
             
               TABLE 29 
             
           
           
             
                 
             
             
               Wavelength Number for RANGE FINDER 
             
           
        
         
             
                 
               WAVL NBR 
             
           
        
         
             
                 
               1 
               2 
               3 
               4 
               5 
             
             
                 
                 
             
           
        
         
             
               Wavelength 
               1.57000 
               1.54000 
               1.58000 
               0.00000 
               0.00000 
             
             
               Spectral Wt 
               1.0000 
               1.0000 
               1.0000 
               1.0000 
               1.0000 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
           
         
             
               TABLE 30 
             
           
           
             
                 
             
             
               Reference Object for RANGE FINDER 
             
           
        
         
             
               REF OBJ HT 
               REF AP HT 
               OBJ SURF 
               REF SURF 
               IMG SURF 
             
             
                 
             
             
               −0.173613E+18 (0.0573 DG) 
               −0.54348 
               0 
               3 
               17 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
           
         
             
               TABLE 31 
             
           
           
             
                 
             
             
               Aperture Stop at Surf 3 For RANGE FINDER 
             
           
        
         
             
               EFL 
               BF 
               F/NBR 
               Length 
               GIH 
             
             
                 
             
             
               −4.3385 
               0.0400 
               1.68 
               4.5488 
               −0.0044 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
             
           
             
             
             
             
             
             
             
           
         
             
               TABLE 32 
             
           
           
             
                 
             
             
               Tilt and Dec Data for RANGE FINDER 
             
           
        
         
             
               Surface 
               Type 
               YD 
               XD 
               Alpha 
               Beta 
               Gamma 
             
             
                 
             
           
        
         
             
               5 
               TILT 
               0.00000 
               0.00000 
               35.00000 
               0.00000 
               0.00000 
             
             
               6 
               TILT 
               0.00000 
               0.00000 
               35.00000 
               0.00000 
               0.00000 
             
             
               9 
               TILT 
               0.00000 
               0.00000 
               20.00000 
               0.00000 
               0.00000 
             
             
               10 
               TILT 
               0.00000 
               0.00000 
               20.00000 
               0.00000 
               0.00000 
             
             
               11 
               TILT 
               0.00000 
               0.00000 
               −55.00000 
               0.00000 
               0.00000 
             
             
               12 
               TILT 
               0.00000 
               0.00000 
               −55.00000 
               0.00000 
               0.00000 
             
             
                 
             
           
        
       
     
   
   
     
       
             
           
             
             
             
             
             
             
           
             
             
             
             
             
             
           
         
             
               TABLE 32 
             
           
           
             
                 
             
             
               Standard and Boolean Aperture Data for RANGE FINDER 
             
           
        
         
             
               Surface 
               Type 
               CAY 
               CAX 
               Y-Offset 
               X-Offset 
             
             
                 
             
           
        
         
             
               1 
               CIR 
               1.97167 
                 
               0.00000 
               0.00000 
             
             
               1 COBS 
               CIR 
               0.60000 
                 
               0.00000 
               0.00000 
             
             
               2 
               CIR 
               1.35325 
                 
               0.00000 
               0.00000 
             
             
               4 
               CIR 
               0.28593 
                 
               0.00000 
               0.00000 
             
             
               7 
               CIR 
               0.17633 
                 
               0.00000 
               0.00000 
             
             
               8 
               CIR 
               0.16377 
                 
               0.00000 
               0.00000 
             
             
               13 
               CIR 
               0.16493 
                 
               0.00000 
               0.00000 
             
             
               14 
               CIR 
               0.14391 
                 
               0.00000 
               0.00000 
             
             
               15 
               CIR 
               0.02889 
                 
               0.00000 
               0.00000 
             
             
               16 
               CIR 
               0.02579 
                 
               0.00000 
               0.00000 
             
             
                 
             
           
        
       
     
   
   Although the present invention has been described in connection with preferred embodiments thereof, it will be appreciated by those skilled in the art that additions, deletions, modifications, and substitutions not specifically described may be made without department from the spirit and scope of the invention as defined in the appended claims.