Source: https://patents.google.com/patent/WO2010131400A1/en
Timestamp: 2019-11-21 17:41:37
Document Index: 285544128

Matched Legal Cases: ['art 5', 'art 7', 'art 11', 'art, 2', 'art 13', 'art, 2', 'art 15', 'art 17', 'art 19', 'art 21', 'arts 3', 'art 69']

WO2010131400A1 - Stereoscopic image display apparatus - Google Patents
WO2010131400A1
WO2010131400A1 PCT/JP2010/001559 JP2010001559W WO2010131400A1 WO 2010131400 A1 WO2010131400 A1 WO 2010131400A1 JP 2010001559 W JP2010001559 W JP 2010001559W WO 2010131400 A1 WO2010131400 A1 WO 2010131400A1
PCT/JP2010/001559
藪井智彦
林昭憲
松波克彦
磯部直
2009-05-14 Priority to JP2009-117617 priority Critical
2009-05-14 Priority to JP2009117617 priority
2009-12-01 Priority to JP2009273223 priority
2009-12-01 Priority to JP2009-273223 priority
2010-03-05 Application filed by 株式会社ナナオ filed Critical 株式会社ナナオ
2010-03-05 Priority claimed from JP2010509594A external-priority patent/JP4550166B1/en
2010-11-18 Publication of WO2010131400A1 publication Critical patent/WO2010131400A1/en
238000002834 transmittance Methods 0 claims description 37
230000003287 optical Effects 0 abstract description 33
A half mirror luminance correction coefficient b is used by a luminance correction processor (23) to correct a luminance input signal LI input at a first luminance adjustment unit (13) to LO, also, the half mirror luminance correction coefficient b is used by the luminance correction processor (23) to correct a luminance input signal LI input at a second luminance adjustment unit (13) to LO. Accordingly, images of a first image display unit (3) to be reflected at the half mirror, and images of a second image display unit to be transmitted through the half mirror, can be corrected so as to eliminate the luminance differences according to the optical characteristics of the half mirror, and the luminance differences of the stereoscopic images can be controlled. As a result, the "off feeling" in the stereoscopic images resulting from the half mirror can be suppressed.
The present invention relates to a stereoscopic image display device for recognizing a stereoscopic image based on a right-eye image and a left-eye image, and more particularly to a technique for performing stereoscopic viewing via a half mirror.
Conventionally, as this type of device, for example, a first display unit that displays a first image as a left-eye image, a second display unit that displays a second image as a right-eye image, and a first display Half mirrors provided at the corners of the display unit and the second display unit, a chromaticity adjustment unit for adjusting the chromaticity of the first display unit and the second display unit, and the luminance of the first display unit and the second display unit 3D image display device provided with a brightness adjustment unit that adjusts (for example, see Patent Document 1). In this stereoscopic image display device, variations in chromaticity and luminance in both display units are suppressed by a chromaticity adjustment unit and a luminance adjustment unit.
Note that the conventional apparatus described above does not describe anything about calibration, but generally an optical sensor is used for calibration. Although this optical sensor is different from the stereoscopic image device as described above, the following is given as an example used for a display device that displays a two-dimensional image.
As a first image display apparatus, there is an apparatus that includes a calibration optical sensor separately from the image display apparatus and performs calibration by bringing the optical sensor into close contact with a liquid crystal display panel (for example, see Patent Document 2). . In this apparatus, calibration can be performed with high accuracy without being affected by disturbances such as ambient light.
Further, as a second image display device, there is one in which an optical sensor for calibration is provided in a bezel portion of a liquid crystal display panel (see, for example, Patent Document 3). In this apparatus, when an image is displayed on the liquid crystal display panel, an optical sensor is accommodated in the bezel portion, and the optical sensor is advanced to the liquid crystal display panel only during calibration. Therefore, the optical sensor does not get in the way when displaying an image. In addition, when performing calibration, the optical sensor can be advanced to perform calibration quickly. In addition, calibration can be performed with high accuracy without being affected by disturbances such as ambient light.
In order to perform the calibration in the above-described conventional stereoscopic image display device, for example, an optical sensor for calibration is arranged at an observation position between the half mirror of the stereoscopic image display device and the observer, for example, the above-mentioned patent It is conceivable to arrange the calibration optical sensors described in Document 2 in the respective display units.
Japanese Patent Application Laid-Open No. 2004-241962 (FIGS. 1 and 2) Japanese Patent No. 3751621 (FIG. 1) JP 2007-193355 A (FIG. 1)
That is, in the former former apparatus, the display unit and the optical sensor are separated from each other and are adversely affected by disturbances such as ambient light, so that calibration must be performed in a dark room. Therefore, it is not convenient for the user to perform calibration, and the distance between the display unit and the optical sensor is long, so a high-sensitivity product is required for the optical sensor. Therefore, the former device is not realistic.
Therefore, in the stereoscopic image display apparatus, the conventional latter apparatus has a realistic configuration. However, even if the calibration is performed using the calibration coefficients respectively obtained in the first display unit and the second display unit, the left eye is used at the observation position due to the reflection characteristics and transmission characteristics of the half mirror. The balance of chromaticity / brightness between the image and the right-eye image is lost. Therefore, there is a problem that even the latter apparatus has a sense of incongruity in the stereoscopic image. In particular, since human eyes are more sensitive to luminance than chromaticity, it is important for natural stereoscopic vision to balance the luminance in the right-eye image and the left-eye image.
The present invention has been made in view of such circumstances, and by taking into account the characteristics of the half mirror, it is possible to suppress a sense of incongruity of the stereoscopic image caused by the half mirror and to free the calibration environment. It is an object to provide a stereoscopic image display device capable of increasing the degree.
That is, according to the first aspect of the present invention, in the stereoscopic image display device capable of displaying a stereoscopic image based on binocular parallax, the first image for displaying one of the right-eye image and the left-eye image based on the video signal is displayed. First image display means comprising a first luminance adjustment section for adjusting the luminance of the first video output section on the basis of the video output section and the luminance input signal, and the first image display means and the corner A second video output unit that displays the other of the right-eye image and the left-eye image based on the video signal and the luminance of the second video output unit based on the luminance input signal A second image display means comprising a second brightness adjustment section for adjusting the image, and an image that is arranged in an inclined posture from the corner and is displayed on the first image display means. The image displayed on the second image display means. A half mirror that transmits toward the observer side, a half mirror brightness correction coefficient storage unit that stores a half mirror brightness correction coefficient based on the reflectance and transmittance of the half mirror, and the half mirror brightness correction coefficient Brightness correction means for correcting a brightness input signal input to the first brightness adjustment section and the second brightness adjustment section, and the brightness correction means of the first image display means reflected by a half mirror. Adjustment is made so as to cancel the luminance difference between the image and the image of the second image display means transmitted through the half mirror.
[Operation / Effect] According to the first aspect of the present invention, the image displayed on the first video output unit provided in the first image display means has the luminance adjusted by the first luminance adjusting unit. Irradiated, reflected by the half mirror and headed for the observer. The image displayed on the second video output unit provided in the second image display means is irradiated with the luminance adjusted by the second luminance adjusting unit, passes through the half mirror, and travels toward the observer. At this time, even if the first luminance adjustment unit and the second luminance adjustment unit have the same luminance, there is a luminance difference between the eyes of the observer due to the reflection characteristics and transmission characteristics of the half mirror. This results in a sense of incongruity in the stereoscopic view. Therefore, the image of the first image display means reflected by the half mirror and the second image transmitted through the half mirror by the half mirror brightness correction coefficient stored in the half mirror brightness correction coefficient storage means. Adjustment is made so as to cancel out the luminance difference of the image on the display means. Therefore, correction is made so that the luminance difference between the image of the first image display unit reflected by the half mirror and the image of the second image display unit transmitted through the half mirror is canceled according to the optical characteristics of the half mirror. It is possible to suppress the luminance difference of the stereoscopic image. As a result, it is possible to suppress a sense of discomfort in the stereoscopic image due to the half mirror.
Further, since it is not necessary to consider the characteristics of the half mirror at the time of calibration, the calibration can be performed independently for each of the first image display means and the second image display means. Therefore, the calibration can be performed in a state where the optical sensor for calibration or the like is in close contact with or in close proximity to the first image display unit and the second image display unit, so that the degree of freedom of the calibration environment is increased. Can do.
The half mirror brightness correction coefficient stored in the half mirror brightness correction coefficient storage means is obtained in advance by measuring the reflectance and transmittance of the half mirror in advance and based on the reflectance and transmittance. is there. The half mirror luminance correction coefficient calculates the state in which the light from the first luminance adjusting unit is reflected by the half mirror and the light from the second luminance adjusting unit is transmitted through the half mirror, and the luminance decreases. This is a coefficient for adjusting the other luminance to be smaller.
According to a second aspect of the present invention, in the stereoscopic image display device capable of displaying a stereoscopic image based on binocular parallax, a first image for displaying one of a right eye image and a left eye image based on a video signal is displayed. First image display means comprising a first luminance adjustment section for adjusting the luminance of the first video output section on the basis of the video output section and the luminance input signal, and the first image display means and the corner A second video output unit that displays the other of the right-eye image and the left-eye image based on the video signal and the luminance of the second video output unit based on the luminance input signal A second image display means comprising a second brightness adjustment section for adjusting the image, and an image that is arranged in an inclined posture from the corner and is displayed on the first image display means. The image displayed on the second image display means. A half mirror that transmits the light toward the person side, and the first image display means is set to cancel the luminance difference based on the reflectance and transmittance of the half mirror. Half mirror reflection luminance correction coefficient storage means for storing a correction coefficient; and luminance correction means for correcting a luminance input signal input to the first luminance adjustment unit by the half mirror luminance correction coefficient, The image display means includes a half mirror transmission brightness correction coefficient storage means for storing a half mirror brightness correction coefficient set to cancel out a brightness difference based on the transmittance and reflectance of the half mirror, and the half mirror brightness correction. Luminance correction means for correcting a luminance input signal input to the second luminance adjustment unit by a coefficient. A.
[Operation / Effect] According to the second aspect of the present invention, the image displayed on the first video output unit of the first image display means has the luminance adjusted by the first luminance adjusting unit. Irradiated, reflected by the half mirror and headed for the observer. The image displayed on the second video output unit provided in the second image display means is irradiated with the luminance adjusted by the second luminance adjusting unit, passes through the half mirror, and travels toward the observer. At this time, even if the first luminance adjustment unit and the second luminance adjustment unit have the same luminance, there is a luminance difference between the eyes of the observer due to the reflection characteristics and transmission characteristics of the half mirror. This results in a sense of incongruity in the stereoscopic view. Accordingly, the luminance correction unit corrects the luminance input signal input to the first luminance adjustment unit by the half mirror luminance correction coefficient stored in the half mirror reflection luminance correction coefficient storage unit, and the half mirror transmission luminance correction coefficient. The luminance correction unit corrects the luminance input signal input to the second luminance adjustment unit using the half mirror luminance correction coefficient stored in the storage unit. Therefore, correction is made so that the luminance difference between the image of the first image display unit reflected by the half mirror and the image of the second image display unit transmitted through the half mirror is canceled according to the optical characteristics of the half mirror. It is possible to suppress the luminance difference of the stereoscopic image. As a result, it is possible to suppress a sense of discomfort in the stereoscopic image due to the half mirror.
The half mirror brightness correction coefficient stored in the half mirror reflection brightness correction coefficient storage means and the half mirror brightness correction coefficient stored in the half mirror transmission brightness correction coefficient storage means are the reflectance and transmittance of the half mirror. Is measured in advance and determined in advance based on the reflectance and transmittance. The half mirror luminance correction coefficient calculates the state in which the light from the first luminance adjusting unit is reflected by the half mirror and the light from the second luminance adjusting unit is transmitted through the half mirror, and the luminance decreases. This is a coefficient for adjusting the other luminance to be smaller.
In the present invention, the first image display means further includes user setting storage means for storing a luminance setting value set by a user, and the luminance input signal is adjusted by the luminance setting value. Preferably, the second image display means further includes user setting storage means for storing a luminance setting value set by a user, and the luminance input signal is adjusted by the luminance setting value. 3). Since there is an observer's preference for the luminance, the luminance set by the user including the observer according to the preference is stored as a luminance setting value in the user setting storage means. Therefore, the luminance input signal is adjusted by the luminance setting value, so that the user's favorite luminance can be reflected, and the user including the observer can perform stereoscopic viewing comfortably.
Further, in the present invention, the first image display means stores a half mirror chromaticity correction coefficient that corrects a balance of RGB values that are corrupted by the reflection characteristics of the half mirror based on the reflectance of the half mirror. A reflection chromaticity correction coefficient storage unit; and a chromaticity correction unit that corrects a video signal input to the first video output unit by the half mirror chromaticity correction coefficient, and the second image display unit includes: Half mirror chromaticity correction coefficient storage means for storing a half mirror chromaticity correction coefficient that corrects the balance of RGB values that are corrupted by the transmission characteristics of the half mirror based on the transmittance of the half mirror, and the half mirror chromaticity correction Preferably, the apparatus further includes chromaticity correction means for correcting the video signal input to the second video output unit by a coefficient (contract). Section 4). In general, the reflectivity and transmissivity differ depending on the wavelength due to the optical characteristics of the half mirror. As a result, since all of the RGB values are not attenuated equally by reflection / transmission, the color tone is different between when the image of the same chromaticity is reflected by the half mirror and when the image is transmitted through the half mirror. Different images. Therefore, the first image display means corrects the balance of the corrupted RGB values by the half mirror chromaticity correction coefficient stored in the half mirror reflection chromaticity correction coefficient storage means, and the second image display means The broken RGB value balance is corrected by the half mirror chromaticity correction coefficient stored in the half mirror transmission chromaticity correction coefficient storage means. Therefore, the difference in chromaticity between the image after reflection and the image after transmission can be suppressed. As a result, the observer can observe a stereoscopic image in which the difference in chromaticity caused by the half mirror is suppressed, and can further suppress the sense of discomfort in the stereoscopic image related to chromaticity.
In the present invention, the first image display means further includes a calibration coefficient storage means for storing a calibration coefficient obtained by calibration, and the chromaticity correction means of the first image display means includes: A calibration coefficient storage unit that corrects the video signal input to the first video output unit with the calibration coefficient, and the second image display unit stores the calibration coefficient obtained by the calibration. It is preferable that the chromaticity correction unit of the second image display unit corrects a video signal input to the second video output unit with the calibration coefficient. The chromaticity correction unit corrects the video signal input to the first video output unit based on the calibration coefficient stored in the calibration coefficient storage unit of the first image display unit. Further, the chromaticity correction unit corrects the video signal input to the second video output unit by using the calibration coefficient stored in the calibration coefficient storage unit of the second image display unit. Therefore, the result of calibration performed by the user can be reflected, and stereoscopic viewing can be performed more comfortably for the user including the observer.
The “calibration coefficient” referred to here includes chromaticity correction values, gamma correction values, and the like.
In the present invention, the first image display means and the second image display means may be in close contact with or close to the first video output section and the second video output section. It is preferable that a calibration sensor for collecting each is provided (claim 6). Since the first image display means and the second image display means are provided with the calibration sensors, the user can easily calibrate each image display means without being affected by the ambient light. it can.
In the present invention, the value set by the user is set as the brightness setting value of the user setting storage means of the first image display means, and the brightness setting of the user setting storage means of the second image display means It is preferable that equivalence setting means for setting as a value is provided. Even when the user adjusts the brightness, the brightness setting values of the first image display means and the second image display means are set to the same value by the equivalence setting means. Therefore, the brightness balance of the images displayed on both image display means is maintained.
In the present invention, one of the luminance setting value of the user setting storage unit of the first image display unit and the luminance setting value of the user setting storage unit of the second image display unit is changed by the user. In such a case, it is preferable that a synchronization setting means for setting the other luminance setting value to the same value as the changed value is provided. Even when the user adjusts one of the luminances, the other luminance is also set to the same value by the synchronization setting means. Therefore, the brightness balance of the images displayed on both image display means is maintained.
In the present invention, the first image display means further includes user-set color correction coefficient storage means for storing a user color correction coefficient set by a user, and the chromaticity correction means of the first image display means. Corrects the video signal input to the first video output unit with the user color correction coefficient, and the second image display means stores the user color correction coefficient set by the user. Preferably, the image processing apparatus further includes a correction coefficient storage unit, and the chromaticity correction unit of the second image display unit corrects the video signal input to the second video output unit with the user color correction coefficient. 9). Since the chromaticity correction means corrects the video signal with the user color correction coefficient of the user color correction coefficient storage means, the user's preference can be reflected in the display color of the image.
In the present invention, the value set by the user is set as the user color correction coefficient of the user set color correction coefficient storage means of the first image display means, and the user set color of the second image display means Preferably, equivalence setting means for setting as a user color correction coefficient of the correction coefficient storage means is provided. Even when the user adjusts the user color correction coefficient, the user color correction coefficients of the first image display means and the second image display means are set to the same value by the equivalent value setting means. Therefore, the chromaticity balance of the images displayed on both image display means is maintained.
Note that the “user color correction coefficient” here includes gain adjustment, contrast setting, and the like.
In the present invention, the user color correction coefficient of the user setting color correction coefficient storage means of the first image display means and the user color correction coefficient of the user setting color correction coefficient storage means of the second image display means When either one is changed by the user, it is preferable to include synchronization setting means for setting the other user color correction coefficient to the same value as the changed value. Even when the user adjusts one of the user color correction coefficients, the other user color correction coefficient is set to the same value by the synchronization setting means. Therefore, the chromaticity balance of the images displayed on both image display means is maintained.
According to a twelfth aspect of the present invention, in the stereoscopic image display device capable of displaying a stereoscopic image based on binocular parallax, a first image for displaying one of a right eye image and a left eye image based on a video signal is displayed. First image display means comprising a first luminance adjustment section for adjusting the luminance of the first video output section on the basis of the video output section and the luminance input signal, and the first image display means and the corner A second video output unit that displays the other of the right-eye image and the left-eye image based on the video signal and the luminance of the second video output unit based on the luminance input signal A second image display means comprising a second brightness adjustment section for adjusting the image, and an image that is arranged in an inclined posture from the corner and is displayed on the first image display means. The image displayed on the second image display means. A half mirror that transmits toward the observer side, and the first image display means is set to cancel the luminance difference based on the reflectance and transmittance of the half mirror Brightness correction means for correcting a brightness input signal input to the first brightness adjustment unit by a brightness correction coefficient, and the second image display means has a brightness based on the transmittance and reflectance of the half mirror. A luminance correction unit that corrects a luminance input signal input to the second luminance adjustment unit using a half-mirror luminance correction coefficient that is set so as to cancel the difference; Half mirror reflection luminance correction coefficient storage means for storing the half mirror luminance correction coefficient for the image display means, and the half mirror for the second image display means in advance. A setting device comprising: a half mirror transmission luminance correction coefficient storage means for storing a luminance correction coefficient; and the setting device includes a half mirror luminance correction coefficient of the half mirror reflection luminance correction coefficient storage means, The half mirror luminance correction coefficient of the half mirror transmission luminance correction coefficient storage means is set in the display device main body.
[Operation / Effect] According to the invention described in claim 12, the image displayed on the first video output unit provided in the first image display means of the display device main body is displayed by the first luminance adjusting unit. Irradiated with adjusted brightness, reflected by a half mirror, and headed toward the viewer. Further, the image displayed on the second video output unit provided in the second image display means of the display device main body is irradiated with the luminance adjusted by the second luminance adjusting unit, and is transmitted through the half mirror and observed. Head to the person. At this time, even if the first luminance adjustment unit and the second luminance adjustment unit have the same luminance, there is a luminance difference between the eyes of the observer due to the reflection characteristics and transmission characteristics of the half mirror. This results in a sense of incongruity in the stereoscopic view. Therefore, the luminance input signal that is input by the luminance correction unit of the display device body to the first luminance adjustment unit based on the half mirror luminance correction coefficient stored in the half mirror reflection luminance correction coefficient storage unit set by the setting device. And the luminance correction means of the display device main body is input to the second luminance adjustment unit by the half mirror luminance correction coefficient stored in the half mirror transmission luminance correction coefficient storage means set by the setting device. Correct the luminance input signal. Therefore, correction is made so that the luminance difference between the image of the first image display unit reflected by the half mirror and the image of the second image display unit transmitted through the half mirror is canceled according to the optical characteristics of the half mirror. It is possible to suppress the luminance difference between the stereoscopic images in the display device main body. As a result, it is possible to suppress a sense of discomfort in the stereoscopic image due to the half mirror.
Further, since it is not necessary to consider the characteristics of the half mirror at the time of calibration, the calibration can be performed independently for each of the first image display means and the second image display means of the display device body. Therefore, the calibration can be performed in a state in which the calibration optical sensor or the like is in close contact with or in close proximity to the first image display unit and the second image display unit of the display device body. Can be high.
The half mirror brightness correction coefficient stored in the half mirror reflection brightness correction coefficient storage means of the setting device and the half mirror brightness correction coefficient stored in the half mirror transmission brightness correction coefficient storage means of the setting device are displayed on the display device. The reflectance and transmittance of the half mirror of the main body are measured in advance, and obtained in advance based on the reflectance and transmittance. Further, the half mirror luminance correction coefficient calculates a state in which light from the first luminance adjustment unit of the display device body is reflected by the half mirror and light from the second luminance adjustment unit is transmitted through the half mirror, This is a coefficient for adjusting the other luminance to be smaller in accordance with the smaller luminance. Since these coefficients are stored in the setting device, the same coefficients can be set for each display device body by connecting to a plurality of stereoscopic image display devices. Therefore, the display on a plurality of stereoscopic image display devices can be easily unified. Further, since one setting device can be used for a plurality of display device bodies, the cost of the display device body can be suppressed.
In the present invention, the display device main body further includes user setting storage means in which the first image display means stores a luminance setting value set by a user, and the luminance input signal includes the luminance setting value. And the second image display means further includes user setting storage means for storing a luminance setting value set by a user, and the luminance input signal is adjusted by the luminance setting value. (Claim 13). Since the preference of the observer exists in the luminance, the luminance set according to the preference by the user including the observer is stored as the luminance setting value in the user setting storage means of the display device body. Therefore, the luminance input signal is adjusted by the luminance setting value, so that the user's favorite luminance can be reflected, and the user including the observer can perform stereoscopic viewing comfortably.
Further, in the present invention, the display device main body includes a half mirror chromaticity correction in which the first image display unit corrects a balance of RGB values that are corrupted by the reflection characteristics of the half mirror based on the reflectance of the half mirror. Chromaticity correction means for correcting the video signal input to the first video output unit by a coefficient, and the second image display means is based on the transmission characteristics of the half mirror based on the transmittance of the half mirror. A chromaticity correction unit that corrects a video signal input to the second video output unit using a half mirror chromaticity correction coefficient that corrects the balance of the RGB values that collapse, and the setting device includes the first image display device. Half mirror chromaticity correction coefficient storage means for storing the half mirror chromaticity correction coefficient in advance and the half mirror chromaticity correction coefficient of the second image display device in advance. A half mirror transmission chromaticity correction coefficient storage means, and a half mirror chromaticity correction coefficient of the half mirror reflection chromaticity correction coefficient storage means and a half mirror chromaticity correction of the half mirror transmission chromaticity correction coefficient storage means It is preferable to set a coefficient in the display device main body (claim 14). In general, the reflectivity and transmissivity differ depending on the wavelength due to the optical characteristics of the half mirror. As a result, since all of the RGB values are not attenuated equally by reflection / transmission, the color tone is different between when the image of the same chromaticity is reflected by the half mirror and when the image is transmitted through the half mirror. Different images. Therefore, the first image display means corrects the balance of the corrupted RGB values by the half mirror chromaticity correction coefficient stored in the half mirror reflection chromaticity correction coefficient storage means set by the setting device, In the second image display means, the balance of the corrupted RGB values is corrected by the half mirror chromaticity correction coefficient stored in the half mirror transmission chromaticity correction coefficient storage means set by the setting device. Therefore, the difference in chromaticity between the image after reflection and the image after transmission can be suppressed. As a result, the observer can observe a stereoscopic image in which the difference in chromaticity caused by the half mirror is suppressed, and can further suppress the sense of discomfort in the stereoscopic image related to chromaticity. Since these coefficients are stored in the setting device, the same coefficient can be set for each display device body by connecting to a plurality of stereoscopic image display devices. Therefore, the display on a plurality of stereoscopic image display devices can be easily unified.
In the present invention, the setting device may be obtained by calibration coefficient storage means storing a calibration coefficient obtained by calibration of the first image display means and calibration of the second image display means. Calibration coefficient storage means for storing the obtained calibration coefficient, mirror calibration based on the calibration coefficient of the first image display means and the half mirror chromaticity correction coefficient of the half mirror reflection chromaticity correction coefficient storage means Calculating means for calculating a mirror calibration correction coefficient based on a calibration correction coefficient, a calibration coefficient of the second image display means, and a half mirror chromaticity correction coefficient of the half mirror transmission chromaticity correction coefficient storage means; A mirror of the first image display means A calibration correction coefficient and a mirror calibration correction coefficient of the second image display means are set in the display device main body, and the display device main body has a chromaticity correction means of the first image display means. The video signal input to the first video output unit is corrected by the mirror calibration correction coefficient of the first image display unit, and the chromaticity correction unit of the second image display unit is the first image display unit. Preferably, the video signal input to the second video output unit is corrected by a mirror calibration correction coefficient of the second image display means. In the first image display means of the display device main body, the video signal input to the first video output unit by the chromaticity correction means by the mirror calibration correction coefficient obtained and set by the calculation means of the setting device Correct. Further, in the second image display means of the display device main body, the chromaticity correction means is input to the second video output section by the mirror calibration correction coefficient obtained and set by the calculation means of the setting device. Correct the video signal. Therefore, the result of calibration performed by the user can be reflected, and stereoscopic viewing can be performed more comfortably for the user including the observer. Since these coefficients are stored in the setting device, the same coefficient can be set for each display device body by connecting to a plurality of stereoscopic image display devices. Therefore, the display on a plurality of stereoscopic image display devices can be easily unified.
In the present invention, the first image display means and the second image display means of the display device main body are in close contact with or close to the first video output section and the second video output section. It is preferable that a calibration sensor for collecting the calibration coefficients is provided. Since the first image display means and the second image display means of the display device main body are each provided with a calibration sensor, the user can easily calibrate each image display means without being affected by ambient light. It can be performed.
In the present invention, the value set by the user is set as the luminance setting value of the user setting storage means of the first image display means in the display device body, and the second image display means in the display device body. It is preferable to include equivalence setting means for setting the brightness setting value of the user setting storage means. Even when the user adjusts the brightness, the brightness setting values of the first image display means and the second image display means of the display device body are set to the same value by the equivalence setting means. Therefore, the brightness balance of the images displayed on the two image display means in the display device body is maintained.
In the present invention, the luminance setting value of the user setting storage means of the first image display means in the display device main body and the luminance setting value of the user setting storage means of the second image display means in the display device main body When either one is changed by the user, it is preferable to include synchronization setting means for setting the other luminance setting value to the same value as the changed value (claim 18). Even when the user adjusts one of the luminances, the other luminance is also set to the same value by the synchronization setting means. Therefore, the brightness balance of the images displayed on the two image display means in the display device body is maintained.
In the present invention, the first image display means of the display device body further includes user-set color correction coefficient storage means for storing a user color correction coefficient set by a user, and the first image display means includes: The chromaticity correction unit corrects the video signal input to the first video output unit with the user color correction coefficient, and the second image display unit of the display device body includes a user color set by a user. User-set color correction coefficient storage means for storing a correction coefficient is further provided, and the chromaticity correction means of the second image display means uses the user color correction coefficient as the video signal input to the second video output unit. It is preferable to correct (claim 19). Since the chromaticity correction means corrects the video signal with the user color correction coefficient of the user color correction coefficient storage means in the display device body, the user's preference can be reflected in the display color of the image.
In the present invention, the value set by the user is set as the user color correction coefficient of the user setting color correction coefficient storage means of the first image display means in the display device main body, and the value in the display device main body is set. Preferably, an equivalence setting means for setting as a user color correction coefficient of the user setting color correction coefficient storage means of the second image display means is provided. Even when the user adjusts the user color correction coefficient in the display device main body, the user color correction coefficients of the first image display means and the second image display means are set to the same value by the equivalence setting means. Therefore, the chromaticity balance of the images displayed on both image display means is maintained.
In the present invention, the user color correction coefficient of the user setting color correction coefficient storage means of the first image display means in the display device main body and the user setting color correction coefficient storage of the second image display means in the display device main body. When any one of the user color correction coefficients of the means is changed by the user, it is preferable to include a synchronization setting means for setting the other user color correction coefficient to the same value as the changed value. (Claim 21). Even when the user adjusts one of the user color correction coefficients in the display device body, the other user color correction coefficient is set to the same value by the synchronization setting means. Therefore, the chromaticity balance of the images displayed on both image display means is maintained.
Moreover, in this invention, it is preferable that the said half mirror is a laminated structure of the polarization | polarized-light rotation layer and half mirror layer which rotate the polarization direction of the linearly polarized light in order from the said 1st image display means side. Claim 22). The polarization direction of the light of the image displayed on the second image display means is rotated by the polarization rotation layer when passing through the half mirror. On the other hand, the light of the image displayed on the first image display means is reflected by the half mirror layer of the half mirror. Thereby, the polarization directions of the images displayed on the first image display means and the second image display means can be made different. Therefore, the first image display unit and the second image display unit need not have different configurations related to the polarization, and the same configuration can be used. As a result, the manufacturing cost of the stereoscopic image display device can be reduced.
In the present invention, the half mirror preferably includes a linearly polarizing layer that adjusts the polarization direction of light that has passed through the polarization rotation layer, between the polarization rotation layer and the half mirror layer. Item 23). Since the linearly polarizing layer transmits the polarization rotation layer and can adjust the polarization direction of the image light whose polarization direction has been rotated, it is possible to suppress rainbow patterns and display color changes caused by the wavelength dispersion of the light. .
The present specification also discloses an invention relating to the following “image correction method of a stereoscopic image display device”.
(1) A first video output unit that displays a first image based on a video signal and a first luminance adjustment unit that adjusts the luminance of the first video output unit based on a luminance input signal. Image display means, a second image output section that is arranged in a posture that forms a corner with the first image display means, and displays a second image based on the video signal, and a second based on the luminance input signal. A second image display means comprising a second brightness adjustment section for adjusting the brightness of the video output section, and a first image display means arranged in an inclined posture from the corner and displayed on the first image display means. A half mirror that reflects the image toward the observer and transmits the second image displayed on the second image display means toward the observer, and includes both the first image and the second image. In an image correction method for a stereoscopic image display device capable of displaying a stereoscopic image based on eye parallax,
Calculate the luminance reflectance based on the measured reflectance of each half mirror wavelength and the luminance of each wavelength, and transmit the luminance based on the measured transmittance of each half mirror wavelength and the luminance of each wavelength. The process of calculating the rate,
The luminance correction coefficient on the reflection side is calculated according to the ratio between the smaller one of the luminance reflectance and the luminance transmittance and the luminance reflectance, and the smaller of the luminance reflectance and the luminance transmittance, the luminance transmittance, and The process of calculating the half mirror luminance correction coefficient on the transmission side according to the ratio of
The reflection-side half mirror brightness correction coefficient is stored in advance in the storage means of the first image display means, and the transmission-side half mirror brightness correction coefficient is stored in advance in the storage means of the second image display means. Memory process,
When displaying an image, the first image display unit multiplies the luminance input signal input to the first luminance adjustment unit by the half mirror luminance correction coefficient on the reflection side to correct the second luminance adjustment unit. A process in which the second image display means multiplies the luminance input signal input to the transmission side by a half mirror luminance correction coefficient on the transmission side;
An image correction method for a stereoscopic image display device, comprising:
According to the invention described in (1) above, the luminance input signal input to the first luminance adjustment unit is obtained by multiplying the luminance input signal of the first luminance adjustment unit by the reflection-side half mirror luminance correction coefficient. The luminance difference between the first image display means and the second image display means can be corrected so as to cancel out. Further, by multiplying the luminance input signal of the second luminance adjustment unit by the half mirror luminance correction coefficient on the transmission side, the luminance input signal input to the second luminance adjustment unit is converted into the first image display means and the second image display means. It can correct | amend so that the brightness | luminance difference with the image display means may be negated. Therefore, it is possible to suppress a difference in luminance of the stereoscopic image, and it is possible to suppress a sense of discomfort in the stereoscopic image caused by the half mirror.
Furthermore, since correction is performed using the half mirror brightness correction coefficient calculated by measuring the optical characteristics of the half mirror actually used, it is possible to adjust the brightness with high accuracy and further suppress the sense of discomfort in the stereoscopic image. Can do.
(2) In the image correction method for a stereoscopic image display device according to (1),
Before the memory process,
Based on the measured reflectance of each half mirror for each wavelength and the color-related information for each wavelength of the video input signal, the reflectance for each color-related information is calculated, and the measured transmittance of each half mirror for each wavelength is calculated. , Calculating the transmittance for each color-related information based on the color-related information for each wavelength of the video input signal,
Based on the ratio between the minimum color-related information and the color-related information of all color-related information, the reflection-side half-mirror chromaticity correction coefficient is calculated for each color-related information, and all color-related information A process of calculating a transmission side half mirror chromaticity correction coefficient for each color-related information based on the ratio of the minimum color-related information of the transmittance and each color-related information;
After performing in advance,
The reflection-side half mirror chromaticity correction coefficient is stored in advance in the storage means of the first image display means, and the transmission-side half mirror chromaticity correction coefficient is stored in advance in the storage means of the second image display means. Carry out the process of remembering,
When displaying an image, the first image display unit multiplies the video input signal input to the first video output unit by the reflection-side half mirror chromaticity correction coefficient for each color related information, and corrects the video input signal. A process in which the second image display means multiplies the video input signal input to the second video input unit by the transmission side half mirror chromaticity correction coefficient;
According to the invention described in (2) above, the first image display means multiplies the video input signal of the first video output unit by the half mirror chromaticity correction coefficient on the reflection side to balance the corrupted RGB values. In the second image display means, the balance of the broken RGB values is corrected by multiplying the video input signal of the second video output unit by the half mirror chromaticity correction coefficient on the transmission side. Therefore, the difference in chromaticity between the image after reflection and the image after transmission can be suppressed. As a result, the observer can observe a stereoscopic image in which the difference in chromaticity caused by the half mirror is suppressed, and can further suppress the sense of discomfort in the stereoscopic image.
In addition, since the correction is performed using the half mirror chromaticity correction coefficient calculated by measuring the optical characteristics of the actually used half mirror, the chromaticity can be adjusted with high accuracy, and the stereoscopic image relating to the chromaticity can be further improved. A sense of incongruity can be suppressed.
Note that the color-related information includes, for example, RGB values. In human vision, tristimulus values (XYZ color system) are sensibly closer than RGB values (RGB color system), so tristimulus values are used instead of RGB values of color-related information. Calculate the reflectance and transmittance for each tristimulus value, convert it to RGB values, and finally calculate the half mirror chromaticity correction coefficient on the reflection side and the half mirror chromaticity correction coefficient on the transmission side Also good. As a result, it is possible to perform a more natural correction visually.
According to the stereoscopic image display apparatus according to the present invention, the luminance correction unit receives the luminance input signal input to the first luminance adjustment unit by the half mirror luminance correction coefficient stored in the half mirror reflection luminance correction coefficient storage unit. In addition to correction, the luminance correction unit corrects the luminance input signal input to the second luminance adjustment unit by the half mirror luminance correction coefficient stored in the half mirror transmission luminance correction coefficient storage unit. Therefore, correction is made so that the luminance difference between the image of the first image display unit reflected by the half mirror and the image of the second image display unit transmitted through the half mirror is canceled according to the optical characteristics of the half mirror. It is possible to suppress the luminance difference of the stereoscopic image. As a result, it is possible to suppress a sense of discomfort in the stereoscopic image due to the half mirror.
It is a side view which shows schematic structure of the stereo image display apparatus which concerns on an Example. It is a block diagram which shows schematic structure of a 1st image display part. It is a graph showing the relationship between a wavelength and a tristimulus value, and the relationship between a wavelength and a reflectance. It is a block diagram which shows the 1st image display part which concerns on a 1st modification. It is a side view which shows schematic structure of the stereo image display apparatus which concerns on a 2nd modification. It is a side view which shows schematic structure of the stereo image display apparatus which concerns on a 3rd modification. It is a block diagram which shows the 1st image display part which concerns on a 4th modification. It is a block diagram which shows the 1st image display part and setting apparatus which concern on a 5th modification. It is a longitudinal cross-sectional view which shows the preferable structure of a half mirror.
DESCRIPTION OF SYMBOLS 1,1A-1D ... Stereoscopic image display apparatus VP ... Observation position 3 ... 1st image display part 5 ... 2nd image display part 7, 7A ... Half mirror 9 ... Image | video input part 11 ... 1st image output part, 2nd image output part 13 ... 1st brightness | luminance adjustment part, 2nd brightness | luminance adjustment part 15 ... Calculation part 17 ... Calibration coefficient memory | storage part 19 ... Half mirror correction coefficient memory | storage part 21 ... Chromaticity correction | amendment calculator 23 ... Brightness Correction calculator C C ... Chromaticity correction coefficient C M ... Half mirror chromaticity correction coefficient 25 ... User setting storage unit L I ... Luminance input signal b ... Half mirror luminance correction coefficient L O ... Corrected luminance input signal 31 ... Calibration Sensor 33 ... calibration controller 51 ... display device body 53 ... setting device 55 ... correction coefficient calculator
FIG. 1 is a side view illustrating a schematic configuration of a stereoscopic image display apparatus according to an embodiment, and FIG. 2 is a block diagram illustrating a schematic configuration of a first image display unit.
The stereoscopic image display apparatus 1 according to the present embodiment has a function of allowing a stereoscopic image to be observed at the observation position VP of the observer based on binocular parallax.
The stereoscopic image display device 1 includes a first image display unit 3, a second image display unit 5, and a half mirror 7. In this embodiment, the first image display unit 3 is arranged in a substantially horizontal posture with the image display surface facing downward, and the second image display unit 3 is located on the back side of the first image display unit 3 when viewed from the observation position VP. The image display unit 5 is arranged in a standing posture along the vertical direction on the image display surface. Corners are formed at the positions where the first image display unit 3 and the second image display unit 5 are brought together. For example, when the first image display unit 3 and the second image display unit 5 have a horizontally long screen, the longitudinal direction is located in the depth direction in FIG. The back side of the half mirror 5 is attached to the corner, and is arranged in a posture in which the tip is lowered toward the observation position VP side.
With the above-described configuration, for example, the right-eye image (first image) displayed on the first image display unit 3 is reflected by the half mirror 7 toward the observation position VP. On the other hand, the image for the left eye (second image) displayed on the second image display unit 5 passes through the half mirror 7 and travels toward the observation position VP.
The first image display unit 3 described above corresponds to the “first image display unit” in the present invention, and the second image display unit 5 corresponds to the “second image display unit” in the present invention.
Next, details of the first image display unit 3 will be described. Note that the first image display unit 3 and the second image display unit 5 are the same in a block diagram except for the parameters that will be described later. Will be described as an example.
The first image display unit 3 includes a video input unit 9, a first video output unit 11, a first luminance adjustment unit 13, a calculation unit 15, a calibration coefficient storage unit 17, and a half mirror correction coefficient. And a storage unit 19. The video input unit 9 receives a video signal including a right-eye image among stereoscopic images from a host such as a computer. The first video output unit 11 is configured by, for example, a liquid crystal display panel, and displays a right-eye image based on the video signal. The first luminance adjusting unit 13 is configured by a backlight, for example, and adjusts the luminance of the first image output unit 11 based on the luminance input signal. The calibration coefficient storage unit 17 stores in advance a calibration coefficient (a chromaticity correction coefficient C C described later) including a chromaticity correction value, a gamma correction value, and the like obtained by calibration. The process called calibration is performed at the time of manufacturing the stereoscopic image display apparatus 1 or is performed by the user of the apparatus 1 itself. Further, a half mirror correction coefficient storage unit 19 stores in advance a half mirror brightness correction coefficient b and the half mirror chromaticity correction factor C M to be described later. The half mirror brightness correction coefficient b is a value of the reflection side based on reflectance and transmittance of the half mirror 7, a half mirror chromaticity correction factor C M is a value based on the reflectance of the half mirror 7.
In the configuration of the first image display unit 3 described above, the calibration coefficient storage unit 17 corresponds to the “calibration coefficient storage unit” in the present invention, and the half mirror correction coefficient storage unit 19 in the present invention “half”. It corresponds to “mirror reflection luminance correction coefficient storage means”, “half mirror luminance correction coefficient storage means” and “half mirror reflection chromaticity correction coefficient storage means”.
The calculation unit 15 includes a chromaticity correction calculator 21 and a luminance correction calculator 23. Chromaticity correction calculation unit 21, a video signal inputted from the video input unit 9, is corrected by the chromaticity correction coefficient C C, corrected by the half mirror chromaticity correction factor C M, the first image output unit 11 Give against. The brightness correction computing unit 23 includes a user setting storage unit 25 that stores brightness setting values preset by the user according to the user's (for example, observer) preference. Brightness correction arithmetic unit 23, based on the half mirror brightness correction coefficient b stored in the half mirror correction coefficient storage unit 19, and corrects the luminance input signal L I, the first luminance adjusting unit as the luminance input signal L Omicron 13
The chromaticity correction calculator 21 corresponds to “chromaticity correction means” in the present invention, and the luminance correction calculator 23 corresponds to “luminance correction means” in the present invention. The user setting storage unit 25 corresponds to “user setting storage means” in the present invention.
The second image display unit 5 has the same configuration as the first image display unit 5 described above. However, the chromaticity correction coefficient C C stored in the calibration coefficient storage unit 17 has been collected in the calibration time of the second image display unit 5, the brightness stored in the user setting storage unit 25 The set value is set in the second image display unit 5. Further, a half mirror brightness correction coefficients stored in the half mirror correction coefficient storage unit 19 b and the half mirror chromaticity correction factor C M is in the second image display unit 5. That is, the half mirror brightness correction coefficient b is a value of the transmission side based on the reflectance and transmittance of the half mirror 7, a half mirror chromaticity correction factor C M is a value based on the transmittance of the half mirror 7.
In the configuration of the second image display unit 5 described above, the calibration coefficient storage unit 17 corresponds to the “calibration coefficient storage unit” in the present invention, and the half mirror correction coefficient storage unit 19 in the present invention “half”. It corresponds to “mirror transmission luminance correction coefficient storage means” and “half mirror transmission chromaticity correction coefficient storage means”.
Next, with reference to FIG. 3, a half mirror chromaticity correction factor C M described above, the method of calculating the half mirror brightness correction coefficient b is explained. FIG. 3 is a graph showing the relationship between the wavelength and the tristimulus value and the relationship between the wavelength and the reflectance.
<Half-mirror chromaticity correction coefficient C M >
First, a description will be given of a method of calculating the half mirror chromaticity correction factor C M.
A video signal (color-related information) is input from the host through the video input unit 9, and it is assumed here to be an RGB value (RGB color system). By the way, the tristimulus values of the three primary colors considered are more suitable for the sense of light reception in the human eye than the RGB values of the three primary colors considered by the optical principle. Therefore, in this embodiment, the correction coefficient is calculated using tristimulus values. The tristimulus value is also called an XYZ color system, the stimulus value X is red (+ blue), the stimulus value Y is luminance (+ green), and the stimulus value Z is blue.
As shown in FIG. 3, first, the reflectance r (λ) of the half mirror 7 is measured for each wavelength. The half mirror 7 has an optical characteristic in which the reflectance distribution differs for each wavelength. The same applies to the transmittance. Therefore, first, based on the following equations (1) to (3), the distribution of the reflectance for each wavelength is considered for the tristimulus values XYZ. The reason why the wavelength range is set to 380 to 780 [nm] is that it is only necessary to consider the wavelength range that can be felt by human eyes.
Next, based on the reflectance for each wavelength for the above tristimulus values, a correction coefficient for the RGB value that is the video input signal is calculated. First, R Max , G Max , and B Max are the maximum values that the RGB values output from the first image output unit 11 can take (for example, each of the RGB values is 255), and the observation position VP is reflected by the reflection of the half mirror 7. the RGB value reaching the R'Max, G'Max, is defined as B'Max. At this time, R ′ Max , G ′ Max , and B ′ Max can be obtained by the following equation (4) using the above-described (1) to (3). However, the matrix M is a conversion matrix from the RGB color space to the XYZ color space, and M −1 is a conversion matrix from the XYZ color space to the RGB color space.
These R'Max, G'Max, using B'Max, obtains the correction coefficient in the RGB color space c r, c g, a c b the following (5) to (7). However, C MIN during these formulas, C MIN = MIN (R'Max , G'Max, B'Max) to. Note that MIN means that the smallest value among the numerical values in parentheses is extracted.
c r = C MIN / R'Max ...... (5)
c g = C MIN / G ′ Max (6)
c b = C MIN / B ′ Max (7)
The meaning of each of the above formulas (5) to (7) is to reduce the values of the other colors according to the RGB values that have a smaller value due to the reflectance. In other words, in accordance with the value of the color that has fallen due to reflection, the value of the color that has fallen less due to reflection is made smaller to balance the color.
The half mirror correction coefficient storage unit 19 shown in FIG. 1, the following, (8) a half mirror chromaticity correction factor C M calculated by equation is stored.
The chromaticity correction calculator 21 performs correction calculation according to the following equation (9).
In the equation (9), R I , G I , B I are input video signals input to the video input unit 9 of the first image display unit 3, and R O , G O , B O are RGB values to be output to the first image display unit 3. Further, the matrix C C is the chromaticity correction coefficient stored in the calibration coefficient storage unit 17.
The half mirror chromaticity correction coefficient C M calculated by the above equation (8) corrects the influence of the reflection of the half mirror 7, and the reflectance is set to the transmittance in the above calculation process. What is calculated by the equation is to correct the influence of the transmission through the half mirror 7.
<Half mirror brightness correction coefficient b>
Next, a method for calculating the half mirror luminance correction coefficient b will be described.
Reflective side, for a half-mirror luminance correction coefficient b for correcting the respective brightness difference on the permeate side, reflection side and on the permeate side half mirror chromaticity correction coefficient C stimulus value considering wavelength calculated M in the process of obtaining the Y determined based on the reflectance r Y (and transmittance). Here, the reflection-side and transmission-side half mirror luminance correction coefficients b REF and b TRAN are defined as in the following equations (10) and (11). Incidentally, the reflectance r Y of the reflection side is r Y REF, the transmittance r Y on the permeate side and r Y TRAN.
b REF = r Y MIN / r Y REF (10)
b TRAN = r Y MIN / r Y TRAN (11)
However, r Y MIN is assumed to be the following equation (12).
r Y MIN = MIN (r Y REF , r Y TRAN ) (12)
In brightness correction arithmetic unit 23 shown in FIG. 1, the uncorrected signal to the luminance input signal L I, when the signal after the correction to the luminance input signal L Omicron, calculation is performed as indicated by the following equation (13).
L O = bL I (13)
Here, the half mirror luminance correction coefficient b is b = b REF in the case of the reflection side, and is stored in the half mirror correction coefficient storage unit 19 of the first image display unit 3. In the case of the transmission side, b = b TRAN and is stored in the half mirror correction coefficient storage unit 19 of the second image display unit 5. These half-mirror luminance correction coefficients b mean that the luminance is adjusted to be smaller in accordance with the transmission side or the reflection side where the luminance is reduced by transmission or reflection.
The reflectance r Y REF on the reflection side corresponds to “luminance reflectance”, and the transmittance r Y TRAN on the transmission side corresponds to “luminance transmittance”. Further, the half mirror luminance correction coefficient b REF corresponds to “a reflection side half mirror luminance correction coefficient”, and the luminance correction coefficient b TRAN corresponds to “a transmission side half mirror luminance correction coefficient”.
According to the present embodiment apparatus, the luminance correction calculator 23 corrects the luminance input signal input to the first luminance adjustment unit 13 by the half mirror luminance correction coefficient b, and the luminance correction calculation by the half mirror luminance correction coefficient. The device 23 corrects the luminance input signal input to the second luminance adjusting unit 13. Therefore, the luminance difference between the image of the first image display unit 3 reflected by the half mirror 7 and the image of the second image display unit 5 transmitted through the half mirror 7 depends on the optical characteristics of the half mirror 7. Can be corrected so that the luminance difference of the stereoscopic image can be suppressed. As a result, it is possible to suppress a sense of discomfort in the stereoscopic image caused by the half mirror 7.
Further, since the luminance input signal is adjusted by the luminance setting value of the user setting storage unit 25, the user's favorite luminance can be reflected, and the user including the observer can perform stereoscopic viewing comfortably. it can.
Further, in the first image display unit 3, the half mirror chromaticity correction factor C M, the balance of the RGB values collapsed by reflected corrected, in the second image display unit 5, a half mirror chromaticity correction factor the C M, to correct the balance of the RGB values collapsed by transmitting. Therefore, the difference in chromaticity between the image after reflection and the image after transmission can be suppressed. As a result, the observer can observe a stereoscopic image in which the difference in chromaticity caused by the half mirror 7 is suppressed, and can further suppress the sense of discomfort in the stereoscopic image related to chromaticity.
Further, the chromaticity correction calculator 21 corrects the video signal based on the calibration coefficient stored in the calibration coefficient storage unit 17. Therefore, the result of calibration performed by the user can be reflected, and stereoscopic viewing can be performed more comfortably for the user including the observer.
Further, since it is not necessary to consider the characteristics of the half mirror 7 at the time of calibration, each of the first image display unit 3 and the second image display unit 5 can be calibrated independently. Therefore, the calibration can be performed in a state where the optical sensor for calibration or the like is in close contact with or close to the first image display unit 3 and the second image display unit 5, so that the degree of freedom of the calibration environment is increased. can do.
In the above-described embodiment, the calibration sensor is not provided, and a separate configuration is assumed. However, the present invention may have a configuration in which the calibration sensor is integrated. Reference is now made to FIG. FIG. 4 is a block diagram illustrating a first image display unit according to a modification.
The first image display unit 3A incorporates a calibration sensor 31 inside the front bezel of the first image display unit 3. The calibration sensor 31 is controlled by the calibration control unit 33. For example, during normal operation, the calibration sensor 31 is housed inside the front bezel, and control is performed to advance the calibration sensor 31 from the front bezel only when calibration is performed. In the advanced state, the photometric surface of the calibration sensor 31 is in close contact with or close to the display surface of the first image output unit 11. The calibration coefficients collected by the calibration sensor 31 are stored in the calibration coefficient storage unit 17. The configuration described above is also provided in the second image display unit 5A.
With such a configuration, the user can easily calibrate the first image display unit 3A and the second image display unit 5A without being affected by ambient light.
In the above-described embodiment and the first modification, it is preferable to employ the following configuration. Reference is now made to FIG. FIG. 5 is a side view showing a schematic configuration of a stereoscopic image display apparatus according to the second modification.
The stereoscopic image display device 1 </ b> A includes a receiving unit 35 connected to the user setting storage unit 25 of the first image display unit 3 and a receiving unit 35 connected to the user setting storage unit 25 of the second image display unit 5. And. These receiving units 35 are connected to a controller 37. The controller 37 has, for example, a function for setting parameters related to the display of the stereoscopic image display device 1A and a function for transmitting the set parameters. Specifically, for example, a personal computer connected to the stereoscopic image display device 1A, an image quality adjustment switch provided in the first image display unit 3 and the second image display unit 5, and the like can be mentioned.
Each receiving unit 35 receives the brightness setting value transmitted from the controller 37. The brightness setting value received by each receiving unit 35 is written to the user setting storage unit 25 to which each receiving unit 35 is connected. The brightness setting value transmitted from the controller 37 is a desired brightness value set by the user. That is, the same luminance setting value is written in both user setting storage units 25.
Note that each of the receiving units 35 and the controller 37 described above corresponds to “equivalent value setting means” in the present invention.
According to the configuration of the stereoscopic image display device 1A described above, the luminance value desired by the user set by the controller 37 is set in the first image display unit 3 and the second image display unit 5. Therefore, even when the user adjusts the brightness to a desired level, the brightness setting values of the first image display unit 3 and the second image display unit 5 are set to the same value. Therefore, even if the correction related to the half mirror 7 described above is performed, the luminance balance of the images displayed on the two image display units 3 and 5 is maintained.
In the above-described embodiment and the first modification, it is preferable to employ the following configuration. Reference is now made to FIG. FIG. 6 is a side view showing a schematic configuration of a stereoscopic image display apparatus according to the third modification.
In the above-described second modification (stereoscopic image display apparatus 1A), the same luminance setting value is set in parallel in the first image display unit 3 and the second image display unit 5. The stereoscopic image display device 1B according to the third modification is different in that the brightness setting value is written in series.
Specifically, the second image display unit 5 includes a receiving unit 35 and a communication unit 38. Further, the first image display device 3 includes a communication unit 39. The receiving unit 35 receives the brightness setting value transmitted from the controller 37 and set to a desired value by the user. The receiving unit 35 writes the received brightness setting value in the user setting storage unit 25 of the second image display unit 5. Further, when the brightness setting value of the user setting storage unit 25 of the second image display unit 5 is updated, the communication unit 38 transmits the brightness setting value to the communication unit 39 of the first image display unit 3. . The communication unit 39 writes the received brightness setting value in the user setting storage unit 25.
The receiving unit 35, the controller 37, and the communication units 38 and 39 described above correspond to the “synchronization setting unit” in the present invention.
According to the stereoscopic image display device 1B described above, when the set brightness value of the second image display unit 5 is changed by the brightness value desired by the user by the controller 37, the set brightness of the first image display unit 3 is set. The value is also changed to the same value synchronously. Therefore, even when the user adjusts one of the luminance values, the other luminance value is set to the same value. Therefore, even if the correction related to the half mirror 7 described above is performed, the luminance balance of the images displayed on the two image display units 3 and 5 is maintained.
In the above example, the first image display unit 3 includes the communication unit 39, the second image display unit 5 includes the communication unit 38, and the brightness of the user setting storage unit 25 of the second image display unit 5. When the setting value is changed, the same luminance setting value is written in the user setting storage unit 25 of the first image display unit 3. However, conversely, the set luminance value received by the receiving unit 35 is written into the user setting storage unit 25 of the first image display unit 3, and this set luminance value is transmitted via the communication unit 39 and the communication unit 38 to the second The same luminance setting value may be written in the user setting storage unit 25 of the image display unit 5.
In the above-described embodiment and the first modification, it is preferable to employ the following configuration. Reference is now made to FIG. FIG. 7 is a block diagram illustrating a first image display unit according to a fourth modification.
The first image display unit 3 includes a chromaticity correction calculator 21A. Although not shown, the second image display unit 5 similarly includes a color correction calculator 21A. The chromaticity correction calculator 21A includes a user color setting storage unit 41. The user color setting storage unit 41 stores user color correction coefficients set by the user. The user color correction coefficient is, for example, gain adjustment or contrast setting. Expressed where the user color correction coefficient by the symbol C U, color correction arithmetic unit 21A performs the correction calculation by the following equation (14) instead of the above-described (9).
The user color setting storage unit 41 corresponds to the “user setting color correction coefficient storage unit” in the present invention.
According to the configuration described above, the user's preference can be reflected in the display color of the image.
When the user changes the user color correction coefficient stored in the user color setting storage unit 41, the first image display unit 3 as in the second and third modifications described above. And the second image display section 5 are preferably configured to have the same value. Thereby, even if it correct | amends which concerns on the half mirror 7 mentioned above, the chromaticity balance of the image displayed on both the image display parts 3 and 5 is maintained.
The above-described embodiment and the fourth modification can also be configured as follows. Reference is now made to FIG. FIG. 8 is a block diagram illustrating a first image display unit and a setting device according to a fifth modification.
The stereoscopic image display device 1C includes a display device main body 51 and a setting device 53. The display device main body 51 includes a first image display device 3 and a second image display device 5.
The calibration coefficient storage unit 17 and the half mirror correction coefficient storage unit 19 described above do not exist in the display device body 51, and are provided in a setting device 53 that is separate from the display device body 51. The setting device 53 includes a correction coefficient calculator 55. Correction coefficient calculator 55 includes a chromaticity correction coefficient C C previously stored in the calibration coefficient storage unit 17, a half mirror chromaticity correction factor C M previously stored in the half mirror correction coefficient storage unit 19 Based on this, a mirror calibration chromaticity correction coefficient (C M · C C ) is obtained. The obtained mirror calibration chromaticity correction coefficient (C M · C C ) is set in the chromaticity correction calculator 21. The half mirror brightness correction coefficient b stored in the half mirror correction coefficient storage unit 19 is set in the brightness correction calculator 23.
The correction coefficient calculator 55 described above corresponds to the “calculation unit” in the present invention, and the mirror calibration chromaticity correction coefficient (C M · C C ) corresponds to the “mirror calibration correction coefficient” in the present invention. To do.
By configuring as described above, the same effects as those of the above-described embodiment can be obtained. Furthermore, since various coefficients are stored in the setting device 53 that is separate from the display device main body 51, the same setting device 53 is connected to a plurality of stereoscopic image display devices 1C, and the same coefficient is applied to each display device main body 51. Can be set. Therefore, the display on the plurality of stereoscopic image display devices 1C can be easily unified. In addition, since one setting device 53 can be used for a plurality of display device main bodies 51, the cost of the display device main body 51 can be suppressed.
In the fifth modification, the configurations of the first to fourth modifications described above may be provided together.
<Configuration example of half mirror>
In the above-described embodiment and the first to fifth modifications, it is preferable to adopt the following configuration. Reference is now made to FIG. FIG. 9 is a longitudinal sectional view showing a preferred configuration of the half mirror.
The half mirror 7 described above preferably adopts the following structure of the half mirror 7A. In FIG. 9, the angle between the first image display unit 3 and the second image display unit 5 constituting the stereoscopic image display device 1D is greater than 90 degrees in consideration of visibility from the observer. It is about 110 degrees. The configuration excluding the half mirror 7A is almost the same as the above-described embodiment. However, for convenience of explanation, it is assumed that the first image display unit 3 and the second image display unit 5 are provided with a linear polarizing plate 63 having the same polarization characteristics on the front surface. In this example, each linearly polarizing plate 63 has a vertical polarization direction.
Details of the half mirror 7A will be described.
The half mirror 7A is configured by laminating a half-wave plate 65, a linear polarizing plate 67, and a half mirror unit 69 in order from the surface side on which light enters from the second image display unit 5. . For the bonding of the respective parts, it is preferable to use an optical adhesive having the same refractive index as that of the half mirror part 69. The half mirror unit 69 includes a transparent layer 71 and a half mirror layer 73, as shown in a partially enlarged view in FIG. The transparent layer 71 is made of an optically transparent material such as glass or synthetic resin. The half mirror layer 73 is attached to the transparent layer 71 by a technique such as vapor deposition.
The half-wave plate 65 described above corresponds to the “polarization rotating layer” in the present invention, and the linear polarizing plate 67 corresponds to the “linear polarizing layer” in the present invention.
The half-wave plate 65 has a function of rotating the polarization direction of linearly polarized light. For example, the light having the vertical polarization direction emitted from the second image display unit 5 is rotated by 90 degrees to be the horizontal polarization direction. The linearly polarizing plate 67 has a function of suppressing wavelength dispersion of light that may occur due to birefringence in the half-wave plate 65. Therefore, the rainbow pattern that can be generated by birefringence and the change in display color can be suppressed by transmitting light from the second image display unit 5 through the half mirror 7A. Further, even if there is light emitted from the first image display unit 3 and not reflected by the half mirror unit 69 but transmitted through the half mirror unit 69, it can be absorbed by the linear polarizing plate 67 having different polarization characteristics. . Therefore, it is possible to suppress an adverse effect caused by part of the light from the first image display unit 3 that has passed through the half mirror unit 69.
In addition, the code | symbol 75 is the glasses with a polarizing plate which an observer wears. The glasses 75 with a polarizing plate include a linear polarizing plate 77R for the right eye and a linear polarizing plate 77L for the left eye. In this example, the linear polarizing plate 77R for the right eye has a vertical polarization direction, and the linear polarizing plate 77L for the left eye has a horizontal polarization direction. Accordingly, the observer wears the glasses 75 with a polarizing plate to observe only the right-eye image (vertical polarization direction) of the first image display unit 3 reflected by the half mirror 7A with the right eye. Can do. Further, only the left-eye image (lateral polarization direction) of the second image display unit 5 that has passed through the half mirror 7A can be observed with the left eye. As a result, the observer can observe a stereoscopic image.
By adopting such a half mirror 7A, the polarization directions of the images displayed on the first image display unit 3 and the second image display unit 5 can be made different. Therefore, it is not necessary to make the linearly polarizing plates 63 included in the first image display unit 3 and the second image display unit 5 different, and the first image display unit 3 and the second image display unit 5 are the same. A configuration can be used. As a result, the manufacturing cost of the stereoscopic image display device 1D can be reduced.
The present invention is not limited to the above embodiment, and can be modified as follows.
(1) The stereoscopic image display device includes a glasses type and a naked eye type. The above-described embodiment and the first to fifth modifications are different from those in the first image display unit. 3 and 3A, the second image display units 5 and 5A, and the apparatus using the half mirror 7 can be applied.
(2) In the above-described embodiment, luminance correction and chromaticity correction are performed. However, since human vision is more sensitive to luminance than color, a configuration in which chromaticity correction is omitted and only luminance correction is performed. Also good. Thereby, the apparatus can be simplified and the apparatus cost can be reduced.
(3) In the above-described embodiment, the luminance setting value by the user stored in the user setting storage unit 25 is taken into consideration, but the configuration may be omitted.
(4) In the above-described embodiment, the calibration coefficient stored in the calibration coefficient storage unit 17 is taken into account. However, the color correction value, the gamma correction value, and the like are the same on the two display units 3 and 5, or If there is no sense of incongruity, the calibration coefficient need not be considered.
(5) In the above-described embodiment, as shown in FIG. 1, the stereoscopic image display device 1 has an inverted L shape in a side view, but the first image display unit 3 is disposed at the bottom. The letter L may be used. In that case, since the corner portion is located below, the half mirror 7 may be arranged in a posture in which the tip is raised toward the observation position VP.
(6) In the above-described embodiment, the first image display unit 3 and the second image display unit 5 each include the half mirror correction coefficient storage unit 19 and the luminance correction calculator 23. What is necessary is just to be provided in the image display apparatus 1, and the arrangement location is not ask | required.
As described above, the present invention is suitable for a stereoscopic image display device that recognizes a stereoscopic image.
In a stereoscopic image display device capable of displaying a stereoscopic image based on binocular parallax,
A first video output unit that displays one of the right-eye image and the left-eye image based on the video signal, and a first luminance adjustment that adjusts the luminance of the first video output unit based on the luminance input signal A first image display means comprising a unit;
Based on a luminance input signal and a second video output unit arranged in a posture to form a corner with the first image display means and displaying the other of the right eye image and the left eye image based on the video signal A second image display means comprising a second luminance adjusting unit for adjusting the luminance of the second video output unit;
The image that is arranged in an inclined posture from the corner and is displayed on the first image display means is reflected toward the viewer side, and the image displayed on the second image display means is the viewer side. A half mirror that transmits toward
Half mirror correction coefficient storage means for storing a half mirror brightness correction coefficient based on the reflectance and transmittance of the half mirror;
Luminance correction means for correcting a luminance input signal input to the first luminance adjustment unit and the second luminance adjustment unit by the half mirror luminance correction coefficient;
The brightness correction means adjusts so as to cancel the brightness difference between the image of the first image display means reflected by the half mirror and the image of the second image display means transmitted through the half mirror. 3D image display device.
The image that is arranged in an inclined posture from the corner and is displayed on the first image display means is reflected toward the viewer side, and the image displayed on the second image display means is the viewer side. And a half mirror that transmits through
The first image display means includes a half mirror reflection brightness correction coefficient storage means for storing a half mirror brightness correction coefficient set to cancel a brightness difference based on the reflectance and transmittance of the half mirror; Luminance correction means for correcting a luminance input signal input to the first luminance adjustment unit by a half mirror luminance correction coefficient,
The second image display means includes a half mirror transmission brightness correction coefficient storage means for storing a half mirror brightness correction coefficient set so as to cancel a brightness difference based on the transmittance and reflectance of the half mirror, and Luminance correction means for correcting a luminance input signal input to the second luminance adjustment unit by a half mirror luminance correction coefficient;
A stereoscopic image display device comprising:
The stereoscopic image display device according to claim 2,
The first image display means further includes user setting storage means for storing a luminance setting value set by a user, and the luminance input signal is adjusted by the luminance setting value,
The second image display means further includes user setting storage means for storing a luminance setting value set by a user, and the luminance input signal is adjusted by the luminance setting value. Display device.
The stereoscopic image display device according to claim 2 or 3,
The first image display means stores a half-mirror reflection chromaticity correction coefficient that stores a half-mirror chromaticity correction coefficient that corrects the balance of RGB values that are corrupted by the reflection characteristics of the half mirror based on the reflectance of the half mirror. Means, and chromaticity correction means for correcting the video signal input to the first video output unit by the half mirror chromaticity correction coefficient,
The second image display means stores a half-mirror transmission chromaticity correction coefficient that stores a half-mirror chromaticity correction coefficient that corrects the balance of RGB values that are corrupted by the transmission characteristics of the half mirror based on the transmittance of the half mirror. Chromaticity correction means for correcting a video signal input to the second video output unit by the half mirror chromaticity correction coefficient;
A stereoscopic image display device further comprising:
The stereoscopic image display device according to claim 4,
The first image display means further includes calibration coefficient storage means for storing a calibration coefficient obtained by calibration, and the chromaticity correction means of the first image display means includes the first video. While correcting the video signal input to the output unit with the calibration coefficient,
The second image display means further includes calibration coefficient storage means for storing a calibration coefficient obtained by calibration, and the chromaticity correction means of the second image display means includes the second video. A stereoscopic image display apparatus, wherein a video signal input to an output unit is corrected with the calibration coefficient.
The stereoscopic image display device according to claim 5,
The first image display unit and the second image display unit are configured to collect the calibration coefficient in a state of being in close contact with or close to the first video output unit and the second video output unit. A stereoscopic image display device comprising a sensor, respectively.
In the three-dimensional image display apparatus in any one of Claim 3 to 6,
The value set by the user is set as the luminance setting value of the user setting storage means of the first image display means, and is set as the luminance setting value of the user setting storage means of the second image display means A stereoscopic image display device comprising: means.
When one of the luminance setting value of the user setting storage unit of the first image display unit and the luminance setting value of the user setting storage unit of the second image display unit is changed by the user, A stereoscopic image display device comprising synchronization setting means for setting the other luminance setting value to the same value as the changed value.
The stereoscopic image display device according to any one of claims 5 to 8,
The first image display means further includes user-set color correction coefficient storage means for storing a user color correction coefficient set by a user, and the chromaticity correction means of the first image display means includes the first image display means. While correcting the video signal input to the video output unit with the user color correction coefficient,
The second image display means further includes user setting color correction coefficient storage means for storing a user color correction coefficient set by a user, and the chromaticity correction means of the second image display means includes the second image display means. A stereoscopic image display device, wherein a video signal input to a video output unit is corrected with the user color correction coefficient.
The stereoscopic image display device according to claim 9,
The value set by the user is set as the user color correction coefficient of the user set color correction coefficient storage means of the first image display means and the user of the user set color correction coefficient storage means of the second image display means A stereoscopic image display device comprising equivalence setting means for setting as a color correction coefficient.
One of the user color correction coefficient of the user setting color correction coefficient storage means of the first image display means and the user color correction coefficient of the user setting color correction coefficient storage means of the second image display means is a user. A stereoscopic image display device comprising synchronization setting means for setting the other user color correction coefficient to the same value as the changed value when changed by the above.
The first image display means is a luminance input that is input to the first luminance adjusting unit by a half mirror luminance correction coefficient that is set to cancel out the luminance difference based on the reflectance and transmittance of the half mirror. Brightness correction means for correcting the signal,
The second image display means is a luminance input that is input to the second luminance adjustment unit by a half mirror luminance correction coefficient that is set to cancel out the luminance difference based on the transmittance and reflectance of the half mirror. Luminance correction means for correcting the signal;
A display device body comprising:
Half mirror reflection luminance correction coefficient storage means for storing the half mirror luminance correction coefficient for the first image display means in advance;
Half mirror transmission brightness correction coefficient storage means for storing the half mirror brightness correction coefficient for the second image display means in advance;
A setting device comprising:
The setting device sets the half mirror luminance correction coefficient of the half mirror reflection luminance correction coefficient storage means and the half mirror luminance correction coefficient of the half mirror transmission luminance correction coefficient storage means to the display device main body. Stereoscopic image display device.
The stereoscopic image display device according to claim 12,
The display device body includes:
The stereoscopic image characterized in that the second image display means further comprises user setting storage means for storing a luminance setting value set by a user, and the luminance input signal is adjusted by the luminance setting value. Display device.
The stereoscopic image display device according to claim 12 or 13,
The first image display means is input to the first video output unit by a half mirror chromaticity correction coefficient that corrects the balance of RGB values that are corrupted by the reflection characteristics of the half mirror based on the reflectance of the half mirror. Chromaticity correction means for correcting the video signal
The second image display means is input to the second video output unit by a half mirror chromaticity correction coefficient that corrects the balance of RGB values that are corrupted by the transmission characteristics of the half mirror based on the transmittance of the half mirror. Chromaticity correction means for correcting the video signal
The setting device includes:
Half mirror reflection chromaticity correction coefficient storage means for storing in advance the half mirror chromaticity correction coefficient of the first image display device, and half mirror transmission for storing in advance the half mirror chromaticity correction coefficient of the second image display device Chromaticity correction coefficient storage means,
The half mirror chromaticity correction coefficient of the half mirror reflection chromaticity correction coefficient storage means and the half mirror chromaticity correction coefficient of the half mirror transmission chromaticity correction coefficient storage means are set in the display device main body. Image display device.
The stereoscopic image display device according to claim 14,
Calibration coefficient storage means for storing a calibration coefficient obtained by calibration of the first image display means;
Calibration coefficient storage means for storing a calibration coefficient obtained by calibration of the second image display means;
A mirror calibration correction coefficient based on the calibration coefficient of the first image display means and the half mirror chromaticity correction coefficient of the half mirror reflection chromaticity correction coefficient storage means, and the calibration of the second image display means Computing means for obtaining a mirror calibration correction coefficient based on the coefficient and the half mirror chromaticity correction coefficient of the half mirror transmission chromaticity correction coefficient storage means;
Setting the mirror calibration correction coefficient of the first image display means and the mirror calibration correction coefficient of the second image display means in the display device body;
The chromaticity correction unit of the first image display unit corrects the video signal input to the first video output unit with the mirror calibration correction coefficient of the first image display unit, and
The chromaticity correction unit of the second image display unit corrects a video signal input to the second video output unit with a mirror calibration correction coefficient of the second image display unit. Stereoscopic image display device.
The stereoscopic image display device according to claim 15,
The first image display unit and the second image display unit of the display device main body collect the calibration coefficient in a state of being in close contact with or close to the first video output unit and the second video output unit. A stereoscopic image display device, each comprising a calibration sensor.
The stereoscopic image display device according to any one of claims 13 to 16,
The value set by the user is set as the luminance setting value of the user setting storage means of the first image display means in the display device body, and the user setting storage means of the second image display means in the display device body. A stereoscopic image display device comprising equivalence setting means for setting as a luminance setting value.
One of the luminance setting value of the user setting storage means of the first image display means in the display device main body and the luminance setting value of the user setting storage means of the second image display means in the display device main body is the user. A stereoscopic image display device comprising synchronization setting means for setting the other luminance setting value to the same value as the changed value when changed by the above.
The stereoscopic image display device according to any one of claims 15 to 18,
The first image display means of the display device main body further includes user-set color correction coefficient storage means for storing user color correction coefficients set by a user, and the chromaticity correction means of the first image display means includes: While correcting the video signal input to the first video output unit with the user color correction coefficient,
The second image display means of the display device main body further includes user-set color correction coefficient storage means for storing a user color correction coefficient set by a user, and the chromaticity correction means of the second image display means includes: A stereoscopic image display apparatus, wherein a video signal input to the second video output unit is corrected with the user color correction coefficient.
The stereoscopic image display device according to claim 19,
The value set by the user is set as the user color correction coefficient in the user set color correction coefficient storage means of the first image display means in the display device main body, and the user of the second image display means in the display device main body A stereoscopic image display apparatus comprising equivalence setting means for setting as a user color correction coefficient of a set color correction coefficient storage means.
User color correction coefficient of user-set color correction coefficient storage means of the first image display means in the display device body, and user color correction coefficient of user-set color correction coefficient storage means of the second image display means in the display device body A stereoscopic image display device comprising: synchronization setting means for setting the other user color correction coefficient to the same value as the changed value when one of them is changed by a user .
The stereoscopic image display device according to any one of claims 1 to 21,
The three-dimensional image display device, wherein the half mirror has a laminated structure of a polarization rotation layer for rotating a polarization direction of linearly polarized light and a half mirror layer in order from the first image display means side.
The stereoscopic image display device according to claim 22,
The half mirror includes a linearly polarizing layer that adjusts the polarization direction of light that has passed through the polarization rotation layer, between the polarization rotation layer and the half mirror layer.
PCT/JP2010/001559 2009-05-14 2010-03-05 Stereoscopic image display apparatus WO2010131400A1 (en)
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US13/319,419 US9001194B2 (en) 2009-05-14 2010-03-05 Stereo image display device that is capable of making a stereo image recognized based on a right-eye image and a left-eye image
JP2010509594A JP4550166B1 (en) 2009-05-14 2010-03-05 Stereoscopic image display device
EP10774662.0A EP2432237A4 (en) 2009-05-14 2010-03-05 Stereoscopic image display apparatus
CN 201080020259 CN102396238B (en) 2009-05-14 2010-03-05 Stereoscopic image display apparatus
WO2010131400A1 true WO2010131400A1 (en) 2010-11-18
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PCT/JP2010/001559 WO2010131400A1 (en) 2009-05-14 2010-03-05 Stereoscopic image display apparatus
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