Optics: image projectors – Cabinet encloses projector and one side of screen
Patent
1997-11-14
1999-08-31
Dowling, William
Optics: image projectors
Cabinet encloses projector and one side of screen
353 10, 353 98, G03B 2128
Patent
active
059444037
ABSTRACT:
The invention relates to a device for the virtual production of an image, with a housing, an image projection device, which produces an image to be displayed. The housing has an observation opening in a wall of the housing with a fresnel lens arranged therein. Imaging optics arranged in the housing for depicting the object onto the fresnel lens. In order to ensure a large range of applications for this device, provision is made that the imaging optics have a concave mirror arranged in the path o light rays between the image projection device and the fresnel lens. The concave mirror lies opposite the fresnel lens and a ray divider is provided therebetween. To increase the illusion effect, a partially translucent mirro (spy mirror) is additionally arranged on the observation side of the fresnel lens.
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