Optical: systems and elements – Image stabilization – By movable refractive structure
Patent
1998-12-30
2000-09-12
Nguyen, Thong
Optical: systems and elements
Image stabilization
By movable refractive structure
359407, 359554, 359432, G02B 2764, G02B 2300
Patent
active
06118585&
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 lens having positive refractive power. The third lens is movable in a direction orthogonal to an optical axis to stabilize an image. The objective optical system satisfies the following relationships:
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patent: 5771119 (1998-06-01), Kang
Asahi Kogaku Kogyo Kabushiki Kaisha
Nguyen Thong
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