Optical system for observing equipment having image vibration co

Details Optical system for observing equipment having image vibration co Optical system for observing equipment having image vibration co

1998-12-30

2000-04-04

Nguyen, Thong

Optical: systems and elements

Image stabilization

By movable refractive structure

359407, 359554, G02B 2764, G02B 2300

Patent

active

06046853&

ABSTRACT:
An optical system for a binocular is provided with an objective optical system, an erecting system and an eyepiece. The objective optical system includes a first lens having positive refractive power, a second lens having negative refractive power and a third aspherical lens having positive refractive power. The first and second lenses are cemented to each other. The third lens is capable of moving in a direction orthogonal to an optical axis of the objective optical system. The objective optical system satisfies the following relationship:

REFERENCES:
patent: 784611 (1905-03-01), Aitchison
patent: 5020892 (1991-06-01), Glover et al.
patent: 5461513 (1995-10-01), Maruyama
patent: 5500769 (1996-03-01), Betensky
patent: 5598296 (1997-01-01), Imaizumi
patent: 5680195 (1997-10-01), Pekar et al.
patent: 5754339 (1998-05-01), Kanai et al.

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