Wedge exposure control system

Details Wedge exposure control system Wedge exposure control system

1992-05-26

1993-06-29

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Identifying, composing, or selecting

354122, 354296, 355 71, 355126, 359616, G03B 2752, G03B 2770, G03B 2772, G02B 2300

Patent

active

052238890

ABSTRACT:
The apparatus is a visual design system for reliably reproducing kaleidoscope-type images. A design element is fixed rotationally, vertically and horizontally with various gradients in a projection system and illuminated. The resulting image is projected through a bellows, also including various possible configurations. An image receiving system with height and longitudinal adjustment and corresponding gradients receives the image on a translucent viewing screen. The image is received between two kaleidoscope-type mirrors with an adjustable angle therebetween. A camera records the resulting image.
An opaque wedge in a filter-like position, along with an appropriate aperture and resulting depth of field, is used to assure an evenly illuminated image. Similarly, the focal plane can be inclined in order to reduce any distortion caused by the increase in object distance for a portion of the image caused by the kaleidoscope-type mirrors.

REFERENCES:
patent: 3642342 (1972-02-01), De Larrain
patent: 3661439 (1972-05-01), Burnside, III et al.
patent: 3719128 (1973-03-01), Simmons
patent: 4172658 (1979-10-01), Tani et al.
patent: 4229099 (1980-10-01), Watkins
patent: 4653901 (1987-03-01), Loce et al.
patent: 4952004 (1990-08-01), Baird et al.
patent: 4998789 (1991-03-01), Atkins

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