Photocopying – Contact printing – Light boxes
Patent
1985-09-19
1987-01-06
Mathews, A. A.
Photocopying
Contact printing
Light boxes
354108, 354110, 355 40, 355 71, 362 16, 352 47, G03B 1508, G03B 2772
Patent
active
046342486
ABSTRACT:
A photographic camera for producing a composite picture comprises a casing including means for focussing an image of an external object or scene on a first portion of an unexposed photographic medium disposed in an image plane within the casing and a plurality of projection systems for focussing respective static thematic images, illuminated by a flash tube within the casing, on other respective portions of the medium. The flash tube is located within a portion of the casing which is separated from the thematic images by a light-diffusing plate, the light-diffusing plate being located close to the thematic images for illumination thereof. The projection systems have different aperture sizes each related to the distance of the flash tube from the portion of the plate adjacent the thematic image which is focussed on the medium by the respective projection system, whereby uneven illumination of the different thematic images by the flash tube is at least partially compensated at the image plane.
REFERENCES:
patent: 3331298 (1967-07-01), Wiggins
patent: 4011570 (1977-03-01), Stievenart et al.
patent: 4018519 (1977-04-01), Clapp
patent: 4533224 (1985-08-01), Ou
Happycard International Limited
Mathews A. A.
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