Image display device and adjustment for alignment
First Claim
Patent Images
1. 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 having a reflecting surface for reflecting said optical image signal, and a refracting optical part having a refracting surface for projecting said optical image signal onto said reflecting part;
wherein said display receives said optical image signal through said projecting optical arrangement;
at least one of said reflecting surface and said refracting surface is aspherical; and
said projecting optical arrangement is provided with at least a path-bending element for reflecting said optical image signal from said refracting optical part to said reflecting part, the optical axis of said refracting optical part being bent at an appropriate angle in a horizontal plane containing the optical axis of said reflecting part.
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Abstract
An image display device comprises an optical imaging arrangement for providing image information to illumination light and for transmitting the light as an optical image signal; a display for receiving the optical image signal and for displaying an image based on the image information; and a projecting optical arrangement including a reflecting part having a reflecting surface for reflecting the optical image signal, and a refracting optical part having a refracting surface for projecting the optical image signal onto the reflecting part. At least one of the reflecting surface and the refracting surface is aspherical.
40 Citations
23 Claims
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1. An image display device comprising:
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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 having a reflecting surface for reflecting said optical image signal, and a refracting optical part having a refracting surface for projecting said optical image signal onto said reflecting part;
wherein said display receives said optical image signal through said projecting optical arrangement;
at least one of said reflecting surface and said refracting surface is aspherical; and
said projecting optical arrangement is provided with at least a path-bending element for reflecting said optical image signal from said refracting optical part to said reflecting part, the optical axis of said refracting optical part being bent at an appropriate angle in a horizontal plane containing the optical axis of said reflecting part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. The image display device comprising:
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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 having a reflecting surface for reflecting said optical image signal, and a refracting optical part having a refracting surface for projecting said optical image signal onto said reflecting part;
wherein said display receives said optical image signal through said projecting optical arrangement;
at least one of said reflecting surface and said refracting surface is aspherical;
the optical axis of said refracting optical part is bent at an appropriate angle in a horizontal plane containing the optical axis of said reflecting part; and
said projecting optical arrangement is provided with path-bending arrangement for reflecting said optical image signal from a first lens element to a second lens element. - View Dependent Claims (15, 16, 17)
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18. An image display device comprising:
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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 composed of a reflecting part having a reflecting surface for reflecting said optical image signal, and a refracting optical part having a refracting surface for projecting said optical image signal onto said reflecting part;
wherein said display receives said optical image signal through said projecting optical arrangement;
at least one of said reflecting surface and said refracting surface is aspherical; and
said reflecting part has a shape obtained by removing a non-reflecting portion that does not reflect said optical image signal to said display. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification