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US 6,631,994 B2Granted
Image display device and adjustment for alignment
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsHiroshi Suzuki, Kohei Teramoto, Jiro Suzuki, Shinsuke Shikama
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Abstract
A refracting optical lens 15 is provided to project light from transmitting means onto a convex mirror 16 to correct for pincushion distortion of the convex mirror 16.
Claims16
An image display device comprising:
- an optical imaging arrangement for providing image information to illumination light and for transmitting said light as an optical image signal;
- a display for receiving said optical image signal and for displaying an image based on said image information;
- and
- a projecting optical arrangement including a reflecting part for reflecting said optical image signal, said reflecting part having a surface shaped to cause a pincushion distortion of light incident thereon, and a refracting optical part for projecting said optical image signal onto said reflecting part, said refracting optical part having a surface shaped to cause a barrel distortion of light incident thereon, so as to pre-correct for said pincushion distortion of said reflecting part;
- wherein said display receives said optical image signal through said projecting optical arrangement.
2 more elements
Dependencies are inferred from the claim text.