Low magnification projection objective lens

Details Low magnification projection objective lens Low magnification projection objective lens

1986-08-20

1988-06-28

Corbin, John K.

G02B 2718, G02B 1322, G02B 1116

Patent

active

047535237

ABSTRACT:
A low magnification projection objective lens for use in projection examination instrument. The projection objective lens comprises three lens units. The first unit is a converging lens unit composed of a positive lens component on the image side and a negative lens component on the object side, the second unit is a diverging lens unit composed of a negative lens component on the image side and a positive lens component on the object side and the third unit is a converging lens unit composed of a positive lens component.

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