Afocal zooming optical system

Details Afocal zooming optical system Afocal zooming optical system

1991-11-29

1996-04-02

Sugarman, Scott J.

Optical: systems and elements

Lens

With variable magnification

359676, 359684, G02B 1514

Patent

active

055046240

ABSTRACT:
An afocal zooming optical system comprising a plurality of lens groups or components, in which the lens groups movable along the optical axis for zooming do not include the lens group closest to the eye, with the lens group positioned closest to the eye being movable for dioptry adjustment.

REFERENCES:
patent: 4492437 (1985-01-01), Masumoto et al.
patent: 4676581 (1987-06-01), Roberts
patent: 4684223 (1987-08-01), Ikemori et al.
patent: 5136431 (1992-08-01), Terasawa et al.
patent: 5191475 (1993-03-01), Terasawa et al.

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