Optical instrument

Details Optical instrument Optical instrument

1994-11-10

1997-08-26

Nguyen, Thong

Optical: systems and elements

Compound lens system

Microscope

359368, 359380, 359385, G02B 2106, G02B 2100

Patent

active

056615981

ABSTRACT:
An optical instrument having an eyepiece unit through which a viewer is able to view an object, a switch provided on the eyepiece unit and a control device controlling an optical system in the eyepiece unit based on an output signal from the switch.

REFERENCES:
patent: 3762797 (1973-10-01), Heller
patent: 4565428 (1986-01-01), Arndt et al.
patent: 4912388 (1990-03-01), Tanaka et al.
patent: 5266791 (1993-11-01), Morizumi

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