Special optical element for camera to microscope adaptor

Details Special optical element for camera to microscope adaptor Special optical element for camera to microscope adaptor

1974-12-04

1976-08-24

Corbin, John K.

350287, 350 19, G02B 504, G02B 718

Patent

active

039763684

ABSTRACT:
The invention is an optical element, one version of which is useful for operating an automatic exposure control of a self-contained camera coupled to a microscope without detracting from the brightness of the magnified image to be recorded on the camera's film format. The article includes three reflecting surfaces arranged to extract a small part of the light emerging from the microscope's eyepiece and direct it into the photodetector of the automatic exposure control. A lensrefracts the light, after the third reflection, to improve the distribution of the light onto the camera's photodetector. The article is suitable for manufacture as a homogeneous molding of transparent plastic.

REFERENCES:
patent: 586708 (1897-07-01), Hastings
patent: 1892893 (1933-01-01), Karnes
patent: 2161623 (1939-06-01), Hensoldt
patent: 2466455 (1949-04-01), Luboshez
patent: 2946253 (1960-07-01), Clark
patent: 3547459 (1971-04-01), Hartwig
patent: 3898678 (1975-08-01), Walworth

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