Telecentric illumination system

Details Telecentric illumination system Telecentric illumination system

1982-09-14

1985-07-02

Corbin, John K.

350427, 350523, G02B 1322, G02B 1514, G02B 2106

Patent

active

045264430

ABSTRACT:
A telecentric illumination system for telecentrically illuminating an object includes a light source, optical means for telecentrically supplying a light beam from the light source to the object, and an auxiliary condenser removably disposed between the optical means and the object to be illuminated. The auxiliary condenser has a first and a second lens group disposed with a spacing therebetween corresponding to the sum of the focal lengths thereof. Thus, when the auxiliary condenser is inserted between the optical means and the object to be illuminated, there is achieved a telecentric illumination of higher magnification than the illuminated condition by the optical means.

REFERENCES:
patent: 2078586 (1937-04-01), Richter
patent: 2552238 (1951-05-01), Turner et al.
patent: 3421808 (1969-01-01), Gottlieb
patent: 4386828 (1983-06-01), Hirose

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