Optical: systems and elements – Compound lens system – Telescope
Patent
1995-06-06
1996-12-10
Nguyen, Thong
Optical: systems and elements
Compound lens system
Telescope
359407, 359410, G02B 2300
Patent
active
055836933
ABSTRACT:
Telescopic optical systems of a binocular have respective objectives movable along respective optical axes for focusing on an object, and respective power-varying lens assemblies movable along respective optical axes for varying magnifications. One of the objectives is manually movable independent of the other objectives for diopter difference adjustment. The binocular has a manually operable mechanism for actuating the power-varying lens assemblies to adjust the magnifications independently of each other, to equalize the magnifications regardless of angular movement of the telescopic optical systems about the optical axes of the objectives for interpupillary adjustment. Electric motors for moving the objectives into an in-focus condition and moving the power-varying lens assemblies to vary the magnifications synchronously, are disposed on one side of a plane interconnecting the optical axes of the objectives. Batteries for energizing the electric motors are disposed on the other side of the plane.
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Asahi Kogaku Kogyo Kabushiki Kaisha
Nguyen Thong
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