Mechanism for eye contact element of optical device

Details Mechanism for eye contact element of optical device Mechanism for eye contact element of optical device

1996-11-26

1998-07-21

Font, Frank G.

Optical: systems and elements

Lens

With variable magnification

359701, G02B 1514

Patent

active

057842078

ABSTRACT:
A mechanism for the eye contact element of an optical device in which a cylindrical eye contact element is slidably engaged with an eyepiece holding barrel containing an eyepiece therein has a guide mechanism for shifting the eye contact element in the direction of the optical axis of the eyepiece with the rotation of the eye contact element about the optical axis when the eye contact element is rotatively operated, and a holding mechanism for holding the eye contact element at any shifted position.

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patent: 4346967 (1982-08-01), Komoto et al.
patent: 4380378 (1983-04-01), Tamura
patent: 4428651 (1984-01-01), Calcutt
patent: 4576446 (1986-03-01), Kamata
patent: 5020892 (1991-06-01), Glover et al.
patent: 5212595 (1993-05-01), Dennison, Jr. et al.
patent: 5477387 (1995-12-01), Takayama
patent: 5576892 (1996-11-01), Hotta et al.

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