Light source for illumination in an optical viewing device

Details Light source for illumination in an optical viewing device Light source for illumination in an optical viewing device

2005-06-21

2005-06-21

Stafira, Michael P. (Department: 2877)

Optics: measuring and testing

Photometers

Comparison

C356S394000

Reexamination Certificate

active

06909499

ABSTRACT:
The invention concerns a light source having an apparatus for measuring the brightness of the illumination system of an optical viewing device, for example a microscope, in which at least one light sensor (3a) for measuring the intensity of the lamp (1) is arranged, for example, next to the optical waveguide (2). That measurement can be passed on to the user (9), either acoustically or visually, via an electronic unit (4) which compares the measurement to a definable threshold value.

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Zeiss brochure “OPMI® VISU 200 for Ophthalmology”, Document No. 30-251-d, publication annotation IV/98, Apr. 1998.

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