Long focal length macrolens system

Details Long focal length macrolens system Long focal length macrolens system

1997-09-30

1999-06-01

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

359688, G02B 1522

Patent

active

059093196

ABSTRACT:
A high-performance, long-focal length macrolens system is provided which is easy-to-operate and is capable of photographing an object at an infinitely far distance and an object at a close distance without changing the overall length of the macrolens system. The system is configured in order from the object side, having:

REFERENCES:
patent: 3817600 (1974-06-01), Watanabe et al.
patent: 4145115 (1979-03-01), Betensky
patent: 4448495 (1984-05-01), Hayashi
patent: 5191475 (1993-03-01), Terasawa et al.

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