Stereoscopic image display device and stereoscopic image display method

• US 10,558,056 B2
• Filed: 06/16/2017
• Issued: 02/11/2020
• Est. Priority Date: 06/28/2016
• Status: Active Grant

• Current Assignee: Asukanet Company, Ltd.
• Original Assignee: Asukanet Company, Ltd.
• Inventors: Otsubo, Makoto
• Primary Examiner(s): Anyikire, Chikaodili E
• Application Number:
  US16/313,657
• Publication Number:
  US 20190317334A1
• Time in Patent Office: 970 Days
• Field of Search: None
• CPC Class Codes: G02B 30/24 involving temporal multiplexing, e.g. using sequentially activated left and right shutters
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G02B 30/30 involving parallax barriers
• CPC Class Codes: G02B 30/31 involving active parallax barriers involving directional light or back-light sources G02B30/33
• CPC Class Codes: G03B 35/18 by simultaneous viewing
• CPC Class Codes: G03B 35/24 using apertured or refractive resolving means on screens or between screen and eye
• CPC Class Codes: H04N 13/315 the parallax barriers being time-variant
• CPC Class Codes: H04N 13/354 for displaying sequentially

Abstract

A stereoscopic image display device (10) includes: a display (12) displaying small images (11) side by side, each of which containing three-dimensional display data, to convert the data into rays and output from the small images (11); first mechanical shutters (14) disposed, corresponding to positions of the small images (11), in front of the display (12), extracting the rays in a time-division manner as partial rays each output from a plurality of partial regions (13) provided in each of the small images (11) and transmitting the partial rays forward; and second mechanical shutters (16) disposed, corresponding to the positions of the small images (11), in front of the first mechanical shutters (14), transmitting forward the partial rays extracted in a time-division manner per each of the small images (11), reconstructing the partial rays as the rays, and converging each of the reconstructed rays in front to form a three-dimensional image.

Claims

1. A stereoscopic image display device comprising:

a display displaying side by side a plurality of small images, each of the small images containing three-dimensional display data, to convert the three-dimensional display data into rays and output the rays from each of the small images;

a first mechanical shutter panel being disposed so as to abut on the front of the display or being integrated with the display so as to be disposed on the front of the display, the first mechanical shutter panel having first micro mechanical shutters therein, each of the first micro mechanical shutters having a same size as each of pixels of the display, the first micro mechanical shutters being arranged in accord with disposition of the pixels of the display;

a second mechanical shutter panel being disposed in front of the first mechanical shutter panel with a predetermined distance therebetween, the second mechanical shutter panel having second micro mechanical shutters therein, each of the second micro mechanical shutters having the same size as each of the pixels of the display, the second micro mechanical shutters being arranged in accord with the disposition of the pixels of the display,

wherein the first mechanical shutter panel makes the first micro mechanical shutters, which are located within a range corresponding to a displaying range of one of a plurality of partial regions provided in each of the small images displayed on the display, serve as one of first mechanical shutters, and the first mechanical shutters each turn on and off in a time-division manner with respect to a corresponding one of the small images, extract the rays in a time-division manner as partial rays each output from the plurality of partial regions, and transmit the partial rays forward,

wherein the second mechanical shutter panel makes the second micro mechanical shutters, which correspond to a position of each of the small images displayed on the display, serve as one of second mechanical shutters, and each of the second mechanical shutters becomes on-time when at least one of the first mechanical shutters, which correspond to positions of the partial regions sequentially selected from the plurality of partial regions provided in a corresponding one of the small images, is on-time, and the second mechanical shutters transmit forward the partial rays extracted in a time-division manner per each of the small images, reconstruct the partial rays as the rays, and converge each of the reconstructed rays in front to form a three-dimensional image.

2. The stereoscopic image display device according to claim 1, wherein each of the second mechanical shutters respectively corresponding to the small images is disposed on a light axis passing a central portion of a corresponding one of the small images.

3. The stereoscopic image display device according to claim 1, wherein, when the second mechanical shutters respectively corresponding to the small images are on-time, one of the first mechanical shutters that corresponds to a position of one of the plurality of partial regions provided in each of the small images becomes on-time.

4. The stereoscopic image display device according to claim 1, wherein, when the second mechanical shutters respectively corresponding to the small images are on-time, the first mechanical shutters that correspond to positions of the partial regions located at positions away from each other of the plurality of partial regions provided in each of the small images, become on-time.

5. The stereoscopic image display device according to claim 1, wherein each of the second mechanical shutters is in a pinhole-like state.

6. The stereoscopic image display device according to claim 1, wherein each of the second mechanical shutters is in a slit-like state.

7. The stereoscopic image display device according to claim 1, wherein each of the first and second micro mechanical shutters is a MEMS shutter.

8. The stereoscopic image display device according to claim 1, wherein the three-dimensional display data are made from image data obtained by an imaging means.

9. The stereoscopic image display device according to claim 1, wherein the three-dimensional display data are made by using computer graphics.

10. A stereoscopic image display method comprising steps of:

displaying side by side on a display a plurality of small images, each of the small images containing three-dimensional display data, to convert the three-dimensional display data into rays and output the rays from each of the small images;

extracting the rays in a time-division manner as partial rays each output from a plurality of partial regions provided in each of the small images and transmitting the partial rays forward by turning on and off in a time-division manner one or more of first mechanical shutters, wherein the first mechanical shutters are arranged in a first mechanical shutter panel disposed so as to abut on the front of the display or integrated with the display so as to be disposed on the front of the display; and

wherein the first mechanical shutters are respectively disposed at positions corresponding to a plurality of partial regions provided in each of the small images displayed on the display; and

transmitting forward the partial rays extracted in a time-division manner per each of the small images, reconstructing the partial rays as the rays, and converging the reconstructed rays in front to form a three-dimensional image by making second mechanical shutters become on-time when the first mechanical shutters are on-time, wherein the second mechanical shutters are arranged in a second mechanical shutter panel disposed in front of the first mechanical shutter panel with a predetermined distance therebetween;

wherein the second mechanical shutters are disposed so as to each correspond to a position of each of the small images displayed on the display; and

wherein the first mechanical shutters correspond to positions of the partial regions sequentially selected from the plurality of partial regions provided in each of the small images.