Imaging optical system

Details Imaging optical system Imaging optical system

1981-11-25

1984-05-22

Corbin, John K.

G02B 934

Patent

active

044497946

ABSTRACT:
An imaging optical system for photographing an object or an object image at a short distance includes, in succession from the object side, a first positive lens, a second positive lens disposed with a great air space from the first positive lens, a negative lens, and a third positive lens.

REFERENCES:
patent: 1865977 (1932-07-01), Sonnefeld

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