Variable magnification lens

Details Variable magnification lens Variable magnification lens

1981-04-01

1983-09-27

Corbin, John K.

350450, 350463, G02B 964, G02B 1516

Patent

active

044065221

ABSTRACT:
A variable magnification optical system comprising two lens components one on each side of an aperture stop with a positive lens element in each component connected for simultaneous movement to afford a change of 14.5.times. to 16.2.times. magnification in an object to image distance of 1108.96 mm.

REFERENCES:
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patent: 3771853 (1973-11-01), Nakamura
patent: 3788731 (1974-01-01), Sugiura et al.
patent: 4037937 (1977-07-01), Minoura
patent: 4099846 (1978-07-01), Kawamura et al.
patent: 4149774 (1979-04-01), Hirano et al.
patent: 4153339 (1979-05-01), Tajima et al.
patent: 4168110 (1979-09-01), Itoh

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