Image display device

• US 20040046939A1
• Filed: 05/19/2003
• Published: 03/11/2004
• Est. Priority Date: 05/23/2002
• Status: Active Grant

• Current Assignee: Olympus Optical Corporation Limited (Olympus Corporation)
• Original Assignee: Olympus Optical Corporation Limited (Olympus Corporation)
• Inventors: Nakamura, Tomoyuki, Komiya, Yashuiro, Ajito, Takeyuki
• Granted Patent: US 6,984,043 B2
• Time in Patent Office: Days
• US Class Current: 353/7
• CPC Class Codes: G03B 42/08 Visualisation of records by optical means

Abstract

An image display apparatus of the present invention includes a screen, and a plurality of projectors which respectively project images relating to the same object so that the images are superimposed on each other on the screen. In the image display apparatus, one of the plurality of projectors is arranged spatially in substantially plane symmetric with another of the plurality of projectors so that the images are projected at projection angles onto the screen to be substantially in alignment on the screen.

Claims

1. An image display apparatus comprising:

a screen,

a plurality of projectors which respectively project images relating to the same object so that the images are superimposed on each other on the screen,

wherein one of the plurality of projectors is arranged spatially in substantially plane symmetric with another of the plurality of projectors so that the images are projected at elevation angles substantially align with each other on the screen.

2. The image display apparatus according to claim 1, further comprising geometric correction means for correcting a distortion of the images to be superimposed to each other on the screen and a displacement between the images.

3. The image display apparatus according to claim 1, wherein the projector is of a rear-projection type, and

the screen is a transmissive screen which allows light rays incident thereon at different angles to exit as diffused light rays in a substantially uniform directivity.

4. The image display apparatus according to claim 3, further comprising geometric correction means for correcting a distortion of the images superimposed to each other on the screen and a displacement between the images.

5. The image display apparatus according to claim 1, wherein the image display apparatus is designed to output one of, or a combination of at least two of, a color image output of at least four primary colors, an image output for stereo-vision, and an image output for heightening image display luminance.

6. The image display apparatus according to claim 2, wherein the image display apparatus is designed to output one of, or a combination of at least two of, a color image output of at least four primary colors, an image output for stereo-vision, and an image output for heightening image display luminance.

7. The image display apparatus according to claim 3, wherein the image display apparatus is designed to output one of, or a combination of at least two of, a color image output of at least four primary colors, an image output for stereo-vision, and an image output for heightening image display luminance.

8. The image display apparatus according to claim 4, wherein the image display apparatus is designed to output one of, or a combination of at least two of, a color image output of at least four primary colors, an image output for stereo-vision, and an image output for heightening display luminance.