WO2013061450A1 - Afficheur vidéo tridimensionnel - Google Patents

Afficheur vidéo tridimensionnel Download PDF

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Publication number
WO2013061450A1
WO2013061450A1 PCT/JP2011/074850 JP2011074850W WO2013061450A1 WO 2013061450 A1 WO2013061450 A1 WO 2013061450A1 JP 2011074850 W JP2011074850 W JP 2011074850W WO 2013061450 A1 WO2013061450 A1 WO 2013061450A1
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WO
WIPO (PCT)
Prior art keywords
display device
display
lcd
display screen
display surface
Prior art date
Application number
PCT/JP2011/074850
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English (en)
Japanese (ja)
Inventor
一雄 関家
望月　亮
Original Assignee
アスミタステクノロジー株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by アスミタステクノロジー株式会社 filed Critical アスミタステクノロジー株式会社
Priority to PCT/JP2011/074850 priority Critical patent/WO2013061450A1/fr
Publication of WO2013061450A1 publication Critical patent/WO2013061450A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/344—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] with head-mounted left-right displays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/24—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type involving temporal multiplexing, e.g. using sequentially activated left and right shutters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/324—Colour aspects

Definitions

  • the present invention relates to a stereoscopic image display device.
  • stereoscopic video display devices that display binocular stereoscopic left and right images captured by an imaging device on a pair of left and right video display devices and stereoscopically view through a pair of left and right eyepieces have become widespread.
  • stereoscopic image display devices used in operations such as medical diagnosis reduce the fatigue of the operator during surgery and the like, and display characteristics equivalent to those observed with an optical microscope are required.
  • the stereoscopic image display device uses a normal color filter type liquid crystal display device (hereinafter referred to as “CF-LCD”) as the image display device, thereby improving resolution and color reproducibility compared with the case of using a CRT display.
  • CF-LCD normal color filter type liquid crystal display device
  • the CF-LCD is used in the prior art represented by the above-mentioned Patent Document 1, in this CF-LCD, for example, the width between the center of the left eye and the center of the right eye (eye width: about 65 mm on average) It is difficult to achieve high definition with a horizontal screen size approximately twice as large as the above.
  • a CF-LCD one pixel is divided into three sub-pixels of red (R), green (G), and blue (B), which are the three primary colors of light. Therefore, when the display screen is reduced, the aperture ratio of each pixel This is because (ratio of effective pixel area to pixel area) becomes too small (a pixel aperture ratio cannot be ensured).
  • a CF-LCD with Full-HD definition (horizontal 1920 ⁇ vertical 1080) is viewed at a virtual image position of about several tens of centimeters to 1 m and a sufficient angle of view (about 20 degrees in the vertical and horizontal directions)
  • Full- In an HD definition CF-LCD one pixel has a viewing angle of 1 minute (1 minute is an angle of 1 / 60th of 1 degree) or more. Since the visual resolution of a human with a visual acuity of 1.0 is 1 minute, a user with a visual acuity of 1.0 can identify one pixel or less in a CF-LCD with a Full-HD definition.
  • the present invention provides a display of definition corresponding to the HDTV (high definition television) system in which the horizontal screen size is formed to be about twice the eye width.
  • a color sequential display type liquid crystal display device having a screen, and a pair of left and right eyepieces provided on the display screen side of the liquid crystal display device, wherein the liquid crystal display device displays left and right images for binocular stereoscopic viewing
  • Each of the eyepieces is divided into a left display surface and a right display surface to be displayed, and each of the eyepieces is provided so that optical axes directed to the left display surface and the right display surface are parallel to each other. .
  • a color sequential display type field sequential color type: FSC type
  • FSC type field sequential color type
  • FIG. 1 is a diagram schematically illustrating the appearance of a stereoscopic video display apparatus according to an embodiment of the present invention.
  • FIG. 2 is a top view of the stereoscopic image display apparatus shown in FIG. 3 is a cross-sectional view taken along line AA shown in FIG.
  • FIG. 4 is a diagram for explaining the principle of stereoscopic vision by the parallel method.
  • FIG. 5 is a diagram illustrating an example of imaging by 3 CCDs.
  • FIG. 6 is a first diagram for explaining an image displayed on the CF-LCD.
  • FIG. 7 is a second diagram for explaining an image displayed on the CF-LCD.
  • FIG. 8 is a first diagram for explaining an image displayed on the FSC-LCD.
  • FIG. 9 is a third diagram for explaining an image displayed on the CF-LCD.
  • FIG. 10 is an enlarged view of a part of the screen when the fine line shown in FIG. 9 is displayed on the CF-LCD.
  • FIG. 11 is a second diagram for explaining an image displayed on the FSC-LCD.
  • FIG. 1 is a diagram schematically showing an appearance of a stereoscopic video display device 100 according to an embodiment of the present invention
  • FIG. 2 is a top view of the stereoscopic video display device shown in FIG. 1
  • FIG. 3 is a cross-sectional view taken along arrow AA shown in FIG.
  • the stereoscopic video display device 100 includes a color sequential display type liquid crystal display device (FSC-LCD, hereinafter referred to as “display device”) 6 and a case 1 as main components.
  • FSC-LCD color sequential display type liquid crystal display device
  • the display screen 4 includes a left display surface 4a and a right display surface 4b.
  • left and right images for binocular stereoscopic imaging captured by an imaging device are displayed so as not to overlap each other.
  • the definition of the display screen 4 is Full-HD definition (horizontal 1920 ⁇ vertical 1080). It is desirable to apply. Note that, for example, a backlight, a display device control drive circuit, and the like are provided in the display device 6.
  • a pair of left and right eyepieces are provided on the display screen 4 side of the display device 6 so that the left eyepiece 2a and right eyepiece 2b are
  • the case 1 is provided so as to be adjustable in the left-right direction.
  • the left eyepiece 2a is provided with an eyepiece 3a
  • the right eyepiece 2b is provided with an eyepiece 3b.
  • the image displayed on the left display surface 4a is displayed on the left through the eyepiece 3a.
  • the image observed by the eye P and displayed on the right display surface 4b is observed by the right eye P through the eyepiece 3b.
  • the optical axis 10 of the eyepiece 3a and the optical axis 10 of the eyepiece 3b are provided in parallel to each other and in a direction perpendicular to the surface of the display screen 4, and each of the center of the left display surface 4a and the right display surface 4b. Located in the center.
  • the partition wall 5 extends from the center position of the left display surface 4a and the right display surface 4b toward the center position of the left eyepiece portion 2a and the right eyepiece portion 2b.
  • the display screen 4b is separated from the front space of the display surface 4b so that the left eye can see only the image of the left display surface 4a and the right eye can see only the right display surface 4b. Therefore, when there is the partition wall 5, stereoscopic vision is facilitated, but it is possible to obtain the effect according to the present embodiment even without the partition wall 5.
  • the case 1 is used.
  • the display screen 4 may be provided at one end and the eyepiece 2 may be provided at the other end. If the display screen 4 and the eyepiece unit 2 can be provided integrally using a frame (not shown), the case 1 may not be used.
  • the case 1 When the case 1 is not provided, external light may be reflected on the display screen 4, but the effect according to the present embodiment can be obtained.
  • FIG. 4 is a diagram for explaining the principle of stereoscopic vision by the parallel method.
  • the stereoscopic image display device 100 is used for medical treatment, for example, an operator needs to perform stereoscopic viewing while performing a manual operation during surgery, and the optimum distance is 30 to 50 cm from the eye P.
  • the left-eye display image is displayed on the left display surface 4a and the right display surface 4b is displayed using the principle of the parallel method.
  • An image for the right eye is displayed, and the distance between the center of the left display surface 4a and the center of the right display surface 4b is the same as the eye width A.
  • the distance B between the eye P and the left display surface 4a (or the distance between the eye P and the right display surface 4b) B is, for example, about 10 cm, and the focal length of the eyepieces 3a, 3b is, for example, 12.5 cm.
  • a virtual image is formed at a distance C suitable for visual recognition (for example, about 50 cm).
  • the display screen 4 when the display screen 4 is small, that is, when the distance between the center of the left display surface 4a and the center of the right display surface 4b is shorter than the eye width A, it is closer to the focus adjustment of the eye with respect to the position where the virtual image can be seen. Because binocular parallax is attached in the direction of the cross-eye when looking at the camera, it causes fatigue.
  • the stereoscopic image display apparatus 100 realizes the stereoscopic viewing method shown in FIG. 4 so that the size of the display screen 4 is approximately twice the eye width A (for example, the horizontal width H is 130 mm and the height V is About 73 mm diagonal). That is, the distance between the center of the left display surface 4a and the center of the right display surface 4b corresponds to the eye width A. Therefore, according to the stereoscopic video display apparatus 100 according to the present embodiment, the angle ⁇ of the visual axis 11 with respect to the normal line of the display screen 4 can be reduced, and the user can display the video displayed on the display screen 4 as follows. It can be observed with the original binocular parallax, and the eye P does not get tired or have a headache even when observed for a long time.
  • the eyepieces 3a and 3b can have a large aperture, and even if the distance between the eyepieces 3a and 3b and the eye P is increased, the position of the pupil is 2 Stereoscopic viewing is possible even with a deviation of ⁇ 3 cm. In addition, brightness reduction and flicker do not occur as in the conventional liquid crystal shutter glasses method, and natural stereoscopic viewing is possible.
  • FIG. 5 is a diagram showing an example of imaging by 3 CCDs, and FIG. 5 shows imaging in which red and blue are alternately arranged vertically and horizontally as an example.
  • FIG. 6 is a first diagram for explaining an image displayed on the CF-LCD
  • FIG. 7 is a second diagram for explaining an image displayed on the CF-LCD.
  • CF-LCD full color display is performed by combining three sub-pixels of RGB as one set, so that one pixel is divided into a plurality of sub-pixels. For this reason, when the display screen 4 is made small, the aperture ratio of the pixels becomes too small, so that it is difficult to realize a horizontal screen size with high definition and about twice the eye width.
  • a color break at the boundary of the B (blue) display sub-pixel or the boundary of the R (red) display sub-pixel may appear as a K (black) thin line. is there.
  • an inappropriate color mixture (magenta: magenta) of R and B for example, in the upper half, is present at the boundary of the color plane (the part where the areas of each color are adjacent on the left and right).
  • a pseudo-wire (for example, K) of another color other than R and B may be seen due to a break like the lower half.
  • FIG. 8 is a first diagram for explaining an image displayed on the FSC-LCD.
  • FIG. 8 shows an example of an image when the image of FIG. 5 is displayed on the FSC-LCD.
  • the FSC-LCD is a method in which RGB is switched at high speed at 180 Hz or higher on the same pixel of the FSC-LCD, and full color display is performed with one pixel (a portion surrounded by a thin line in FIG. 8). Therefore, the FSC-LCD requires only one-third the number of signal wirings compared to the CF-LCD, so it is easy to achieve high definition and high aperture ratio, and there is no sub-pixel, and pixel boundary recognition is reduced. Is done.
  • the color of the light source for example, LED
  • other characteristics luminance, etc.
  • FIG. 9 is a third diagram for explaining an image displayed on the CF-LCD.
  • FIG. 9 shows a monochromatic (for example, red) thin line imaged by a 3CCD camera.
  • the 3CCD method is a method used by professionals or high-end machines, and when the subject is decomposed into R, G, and B images, each pixel of R, G, and B samples exactly the same position of the subject. It has become.
  • FIG. 10 is an enlarged view of a part of the screen of the thin line shown in FIG. 9 displayed on the CF-LCD.
  • the red thin line shown in FIG. 9 is displayed on the CF-LCD, since one pixel is divided into sub-pixels in the CF-LCD, only the red sub-pixel is displayed as shown in FIG. The thin line appears broken at the point indicated by the downward arrow.
  • FIG. 11 is a second diagram for explaining an image displayed on the FSC-LCD.
  • the red thin line shown in FIG. 9 is displayed on the FSC-LCD
  • one pixel is not divided into sub-pixels but becomes a single square, so that each pixel is vertically and horizontally as shown in FIG. It is displayed in an obliquely connected state and does not appear to be interrupted. Therefore, in the FSC-LCD, the glossiness like viewing a film photograph can be obtained by the connectivity of each pixel, and the connectivity of fine lines is not mistaken.
  • the biggest difficulty of FSC-LCD is that “color breakup” occurs. That is, when a certain display object is moving on the display screen of the FSC-LCD, the front end and the rear end appear to be rainbow colors. With regard to this color breakup, black can be added to one or more fields before and / or after the set of three primary colors, and the colors in the added set can be displayed sequentially to improve the level without any problem. is there.
  • the definition of the display screen 4 is the Full-HD definition (1920 ⁇ 1080), but is not limited to this, and the definition of the display screen 4 is, for example, 1440 ⁇ 1080 or 1280. It may be HD definition such as x720. Even in such a configuration, there is no problem with the prior art that the monochromatic thin line is interrupted and the color mixture and the pseudo-line are visible at the boundary of the color plane, so that it is possible to improve the image quality.
  • the stereoscopic image display apparatus 100 has a horizontal screen size that is approximately twice as large as the interpupillary width A, and has a definition corresponding to the HDTV (high definition television) system.
  • a color sequential display type liquid crystal display device (display device 6) having a display screen 4 of a degree and a pair of left and right eyepieces 3 a and 3 b provided on the display screen 4 side of the display device 6. Is divided into a left display surface 4a and a right display surface 4b for displaying right and left images for binocular stereoscopic viewing, respectively, and the eyepiece 3a and the eyepiece 3b are respectively directed to the left display surface 4a and the right display surface 4b.
  • the stereoscopic image display apparatus 100 can easily achieve higher definition and a wider aperture ratio than the CF-LCD, and can reduce pixel boundary recognition. Accordingly, it is possible to realize a wide color gamut and to adjust the color gamut freely without affecting other characteristics as long as it is within the maximum color gamut.
  • the stereoscopic image display apparatus 100 is configured such that the definition of the display screen 4 is not less than the full high-definition standard and the pixels are single squares without using sub-pixels. Even when a user with a visual acuity of 1.0 or more views stereoscopically, it is possible to visually recognize a clear video without being conscious of each pixel of the display screen 4.
  • the distance B between the display device 6 and the eyepieces 3a and 3b is set to about 10 cm, and the focal length of the eyepieces 3a and 3b is about 12.5 cm. Therefore, a virtual image is formed at a distance C (for example, about 50 cm) suitable for visual recognition.
  • the eye width A described in the present embodiment means that when the dispersion of the eye width A is 52 mm to 75 mm at the maximum, this value is divided by the average eye width A (63 to 65 mm). From the value (0.8 to 1.2), for example, 1.6 times to 2.4 times.
  • the focal length F is 12.5 cm and the display screen 4 is arranged at a position (B) of 10 cm
  • the magnification ratio of the virtual image is 5 times
  • the position (C) of the virtual image is 50 cm
  • the magnification ratio is 5 Doubled.
  • the stereoscopic video display device 100 shown in the present embodiment shows an example of the content of the present invention, and can be combined with another known technique, and departs from the gist of the present invention. Of course, it is possible to change and configure such as omitting a part within the range.
  • the present invention is mainly applicable to a stereoscopic video display device, and is particularly useful as an invention capable of reducing the size and improving the image quality of a stereoscopic video display device.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

La présente invention concerne un afficheur vidéo tridimensionnel comprenant : un afficheur à couleurs séquencées (6) constitué d'un écran (4) dont la taille est prévue pour que les dimensions horizontales de l'écran soient approximativement le double de l'écart interpupillaire (A), et qui dispose d'une définition correspondant au format HDTV ; et une paire d'oculaires (3a, 3b), gauche et droit, disposés du côté écran (4) de l'afficheur (6). L'afficheur (6) est divisé en un écran gauche (4a) et un écran droit (4b) qui affichent respectivement l'image vidéo gauche et l'image vidéo droite destinées à la vision stéréoscopique par lentilles jumelées, l'oculaire (3a) et l'oculaire (3b) étant disposés de façon que leurs axes optiques en direction de l'écran gauche (4a) et de l'écran droit (4b) soient parallèles.
PCT/JP2011/074850 2011-10-27 2011-10-27 Afficheur vidéo tridimensionnel WO2013061450A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP2011/074850 WO2013061450A1 (fr) 2011-10-27 2011-10-27 Afficheur vidéo tridimensionnel

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Application Number Priority Date Filing Date Title
PCT/JP2011/074850 WO2013061450A1 (fr) 2011-10-27 2011-10-27 Afficheur vidéo tridimensionnel

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004305367A (ja) * 2003-04-04 2004-11-04 Olympus Corp 立体観察装置
WO2008139828A1 (fr) * 2007-05-14 2008-11-20 Mitaka Kohki Co., Ltd. Dispositif d'affichage d'image tridimensionnelle
JP2009288296A (ja) * 2008-05-27 2009-12-10 Mitaka Koki Co Ltd 立体映像表示装置
JP2010224065A (ja) * 2009-03-19 2010-10-07 21 Aomori Sangyo Sogo Shien Center 色順次表示方式液晶表示装置およびその色表示方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004305367A (ja) * 2003-04-04 2004-11-04 Olympus Corp 立体観察装置
WO2008139828A1 (fr) * 2007-05-14 2008-11-20 Mitaka Kohki Co., Ltd. Dispositif d'affichage d'image tridimensionnelle
JP2009288296A (ja) * 2008-05-27 2009-12-10 Mitaka Koki Co Ltd 立体映像表示装置
JP2010224065A (ja) * 2009-03-19 2010-10-07 21 Aomori Sangyo Sogo Shien Center 色順次表示方式液晶表示装置およびその色表示方法

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