Patent
1979-01-29
1981-02-17
Hix, L. T.
354 60L, 354155, 354289, G03B 708, G03B 1720, G03B 1912
Patent
active
042511461
ABSTRACT:
Photographic indicator apparatus is provided for use in a folding type camera with a collapsible viewing device to provide a signal which is visible through an eyelens of the camera viewing device and which indicates that available scene light is below a threshold value which requires the use of an artificial light source to provide supplemental illumination of the scene or which will cause blurred pictures if the camera is hand held and no artificial light source is used. The low available scene light signal originates from an LED which is made visible through the eyelens by a specially configured prismatic optical element that defines a deviated optical path between the eyelens and the LED.
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Caufield Francis J.
Hix L. T,.
Polaroid Corporation
Tarcza Thomas H.
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