Stereoscopic image display device and image display device

• US 20060214875A1
• Filed: 03/21/2006
• Published: 09/28/2006
• Est. Priority Date: 03/28/2005
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Sonehara, Tomio
• Granted Patent: US 7,607,779 B2
• Time in Patent Office: Days
• US Class Current: 345/8
• CPC Class Codes: G03B 35/22 using single projector with stereoscopic-base-defining system
• CPC Class Codes: H04N 13/337 using polarisation multiplexing

Abstract

A stereoscopic image display device includes: a first display section emitting right-eye images composed of first-screen right-eye images and second-screen right-eye images; a second display section emitting left-eye images composed of first-screen left-eye images and second-screen left-eye images; a first reflecting section reflecting the first-screen right-eye images and the first-screen left-eye images; a second reflecting section reflecting the second-screen right-eye images and the second-screen left-eye images; a first screen onto which the first-screen right-eye images and the first-screen left-eye images, and on which parallax images are formed; a second screen onto which the second-screen right-eye images and the second-screen left-eye images, and on which parallax images are formed; and a parallax image selection section having a right-eye transmission section and a left-eye transmission section.

Claims

1. A stereoscopic image display device comprising:

a first display section emitting right-eye images composed of first-screen right-eye images and second-screen right-eye images;

a second display section emitting left-eye images composed of first-screen left-eye images and second-screen left-eye images;

a first reflecting section reflecting the first-screen right-eye images emitted from the first display section and the first-screen left-eye images emitted from the second display section;

a second reflecting section reflecting the second-screen right-eye images emitted from the first display section and the second-screen left-eye images emitted from the second display section;

a first screen onto which the first-screen right-eye images and the first-screen left-eye images that are reflected by the first reflecting section are projected, and on which parallax images composed of the first-screen right-eye images and the first-screen left-eye images are formed;

a second screen onto which the second-screen right-eye images and the second-screen left-eye images that are reflected by the second reflecting section are projected, and on which parallax images composed of the second-screen right-eye images and the second-screen left-eye images are formed; and

a parallax image selection section having a right-eye transmission section transmitting only the first-screen right-eye images and the second-screen right-eye images among the parallax images projected onto the first screen and the second screen, and a left-eye transmission section transmitting only the first-screen left-eye images and the second-screen left-eye images among the parallax images projected onto the first screen and the second screen.

2. A stereoscopic image display device according to claim 1, wherein an optical path length of an optical axis of the first-screen right-eye images from a point of the emission of the first-screen right-eye images by the first display section to a point of the projection of the first-screen right-eye images onto the first screen via the first reflecting section is identical to an optical path length of an optical axis of the second-screen right-eye images from a point of the emission of the second-screen right-eye images by the first display section to a point of the projection of the second-screen right-eye images onto the second screen via the second reflecting section.

3. A stereoscopic image display device according to claim 1, wherein an optical path length of an optical axis of the first-screen left-eye images from a point of the emission of the first-screen left-eye images by the second display section to a point of the projection of the first-screen left-eye images onto the first screen via the first reflecting section is identical to an optical path length of an optical axis of the second-screen left-eye images from a point of the emission of the second-screen left-eye images by the second display section to a point of the projection of the second-screen left-eye images onto the second screen via the second reflecting section.

4. A stereoscopic image display device according to claim 1, further comprising:

a first polarizing plate converting the right-eye images emitted from the first display section to a polarized light of a first direction; and

a second polarizing plate converting the left-eye images emitted from the second display section to a polarized light of a second direction which intersects the first direction, wherein the right-eye transmission section of the parallax image selection section transmits the polarized light of the first direction, and the left-eye transmission section transmits the polarized light of the second direction.

5. A stereoscopic image display device according to claim 1, further comprising:

a first wavelength separation section transmitting a light of a first wavelength band among the right-eye images emitted from the first display section; and

a second wavelength separation section transmitting a light of a second wavelength band among the left-eye images emitted from the second display section, wherein the right-eye transmission section of the parallax image selection section transmits the light of the first wavelength band, and the left-eye transmission section transmits the light of the second wavelength band.

6. A stereoscopic image display device according to claim 1, wherein at least one of the first reflecting section and the second reflecting section is arranged in a plurality behind the first screen and the second screen.

7. A stereoscopic image display device according to claim 1, wherein the first screen is arranged in front of the parallax image selection section, the second screen extends from the lower end of the first screen toward the parallax image selection section.

8. A stereoscopic image display device according to claim 1, wherein the first-screen right-eye images emitted from the first display section are reflected an odd number of times or an even number of times by the first reflecting section, and projected onto the first screen, the second-screen right-eye images emitted from the first display section are reflected an even number of times and projected onto the second screen, in the case where the first reflecting section conducts reflection an odd number of times and conducts projection onto the first screen, the second-screen right-eye images emitted from the first display section are reflected an odd number of times and projected onto the second screen, in the case where the first reflecting section conducts reflection an even number of times and conducts projection onto the first screen, and the second-screen right-eye images emitted from the first display section are emitted in a vertically inverted manner relative to the first-screen right-eye images emitted from the first display section.

9. A stereoscopic image display device according to claim 1, wherein the first-screen left-eye images emitted from the second display section are reflected an odd number of times or an even number of times by the first reflecting section, and projected onto the first screen, the second-screen left-eye images emitted from the second display section are reflected an even number of times and projected onto the second screen, in the case where the first reflecting section conducts reflection an odd number of times and conducts projection onto the first screen, the second-screen left-eye images emitted from the second display section are reflected an odd number of times and projected onto the second screen, in the case where the first reflecting section conducts reflection an even number of times and conducts projection onto the first screen, and the second-screen left-eye images emitted from the second display section are emitted in a vertically inverted manner relative to the first-screen left-eye images emitted from the second display section.

10. A stereoscopic image display device comprising:

a display section conducting time-division emission of right-eye images composed of first-screen right-eye images and second-screen right-eye images, and left-eye images composed of first-screen left-eye images and second-screen left-eye images;

a first reflecting section reflecting the first-screen right-eye images and the first-screen left-eye images that are emitted with time-division from the display section;

a second reflecting section reflecting the second-screen right-eye images and the second-screen left-eye images that are emitted with time-division from the display section;

a first screen onto which the first-screen right-eye images and the first-screen left-eye images reflected by the first reflecting section are projected with time-division;

a second screen onto which the second-screen right-eye images and the second-screen left-eye images reflected by the second reflecting section are projected with time-division; and

an image selection section having a right-eye transmission section transmitting the right-eye images which are projected with time-division onto the first screen and the second screen, and a left-eye transmission section transmitting the left-eye images which are projected with time-division onto the first screen and the second screen.

11. A stereoscopic image display device according to claim 10, wherein an optical path length of an optical axis of the first-screen right-eye images from a point of the emission of the first-screen right-eye images by the display section to a point of the projection of the first-screen right-eye images onto the first screen via the first reflecting section is identical to an optical path length of an optical axis of the second-screen right-eye images from a point of the emission of the second-screen right-eye images by the display section to a point of the projection of the second-screen right-eye images onto the second screen via the second reflecting section.

12. A stereoscopic image display device according to claim 10, wherein an optical path length of an optical axis of the first-screen left-eye images from a point of the emission of the first-screen left-eye images by the display section to a point of the projection of the first-screen left-eye images onto the first screen via the first reflecting section is identical to an optical path length of an optical axis of the second-screen left-eye images from a point of the emission of the second-screen left-eye images by the display section to a point of the projection of the second-screen left-eye images onto the second screen via the second reflecting section.

13. A stereoscopic image display device according to claim 10, wherein at least one or the other of the first reflecting section and second reflecting section is arranged in a plurality behind the first screen and the second screen.

14. A stereoscopic image display device according to claim 10, wherein the first screen is arranged in front of the image selection section, and the second screen extends from the lower end of the first screen toward the image selection section.

15. A stereoscopic image display device according to claim 10, wherein the first-screen right-eye images emitted from the display section are reflected an odd number of times or an even number of times by the first reflecting section, and projected onto the first screen, the second-screen right-eye images emitted from the display section are reflected an even number of times and projected onto the second screen, in the case where the first reflecting section conducts reflection an odd number of times and conducts projection onto the first screen, the second-screen right-eye images emitted from the display section are reflected an odd number of times and projected onto the second screen, in the case where the first reflecting section conducts reflection an even number of times and conducts projection onto the first screen, and the second-screen right-eye images-emitted from the display section are emitted in a vertically inverted manner relative to the first-screen right-eye images emitted from the display section.

16. A stereoscopic image display device according to claim 10, wherein the first-screen left-eye images emitted from the display section are reflected an odd number of times or an even number of times by the first reflecting section, and projected onto the first screen, the second-screen left-eye images emitted from the display section are reflected an even number of times and projected onto the second screen, in the case where the first reflecting section conducts reflection an odd number of times and conducts projection onto the first screen;

the second-screen left-eye images emitted from the display section are reflected an odd number of times and projected onto the second screen, in the case where the first reflecting section conducts reflection an even number of times and conducts projection onto the first screen, and the second-screen left-eye images emitted from the display section are emitted in a vertically inverted manner relative to the first-screen left-eye images emitted from the display section.

17. An image display device comprising:

a first display section emitting first-screen images;

a second display section emitting second-screen images;

a first reflecting section reflecting the first-screen images emitted from the first display section;

a second reflecting section reflecting the second-screen images emitted from the second display section;

a first screen onto which the first-screen images reflected by the first reflecting section are projected; and

a second screen onto which the second-screen images reflected by the second reflecting section are projected, wherein the first reflecting section and the second reflecting section are provided behind the first screen and the second screen, and at least one of the first reflecting section and the second reflecting section is provided in a plurality.

18. An image display device according to claim 17, wherein an optical path length of an optical axis of the first-screen images from a point of the emission of the first-screen images by the first display section to a point of the projection of the first-screen images onto the first screen via the first reflecting section is identical to an optical path length of an optical axis of the second-screen images from a point of the emission of the second-screen images by the second display section to a point of the projection of the second-screen images onto the second screen via the second reflecting section.

19. An image display device according to claim 17, wherein the second screen extends from the lower end of the first screen.

20. An image display device according to claim 17, wherein the first-screen images emitted from the first display section are reflected an odd number of times or an even number of times by the first reflecting section, and projected onto the first screen, the second-screen images emitted from the second display section are reflected an even number of times by the second reflecting section and projected onto the second screen, in the case where the first reflecting section conducts reflection an odd number of times, the second-screen images emitted from the second display section are reflected an odd number of times by the second reflecting section and projected onto the second screen, in the case where the first reflecting section conducts reflection an even number of times, and the second-screen images emitted from the second display section are emitted in a vertically inverted manner relative to the first-screen images emitted from the first display section.