Device for projecting an image into a display area, having a screen for displaying an intermediate image
First Claim
Patent Images
1. A device for projecting an image into a display area, comprising:
- an imager generating a picture;
a first projection device (32) for generating a real intermediate image of the image;
a non-planar screen onto which the first projection device projects the real intermediate image; and
a second projection device, which projects the real intermediate image into the display area, wherein;
main beam directions of the non-planar screen are directed to an entrance pupil of the second projection device, wherein, in the main beam directions substantially all sections of the real intermediate image are radiated with a maximum intensity, and wherein, in non-main beam directions of the non-planar screen, the real intermediate image is radiated with less than the maximum intensity.
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Abstract
Device (1) for projecting an image into a display area (2), with an imager (31) generating the picture, a first projection device (30) for generating a real intermediate image (R), a screen (5) onto which the first projection device (32) projects the intermediate image (R) and to a second projection device (9) projecting the intermediate image (R) into the display area (2). In order to project the image with the least possible loss of brightness, the invention provides that main beam directions (H, H′, H″) of the screen (5) point into an entrance pupil (20) of the second projection device (9).
24 Citations
11 Claims
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1. A device for projecting an image into a display area, comprising:
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an imager generating a picture; a first projection device (32) for generating a real intermediate image of the image; a non-planar screen onto which the first projection device projects the real intermediate image; and a second projection device, which projects the real intermediate image into the display area, wherein; main beam directions of the non-planar screen are directed to an entrance pupil of the second projection device, wherein, in the main beam directions substantially all sections of the real intermediate image are radiated with a maximum intensity, and wherein, in non-main beam directions of the non-planar screen, the real intermediate image is radiated with less than the maximum intensity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification