Optical: systems and elements – Compound lens system – Telescope
Reexamination Certificate
2000-01-13
2001-05-22
Spyrou, Cassandra (Department: 2872)
Optical: systems and elements
Compound lens system
Telescope
C359S835000, C359S418000
Reexamination Certificate
active
06236504
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to an optical instrument, and more particularly to a method and a device for adjusting the eye range by displacing prisms and ocular lenses of the optical instrument.
BACKGROUND OF THE INVENTION
A binoculars is generally formed of a frame, two cylindrical bodies, and a focusing device. The cylindrical bodies are rotatably held by the frame and are provided therein with an objective lens set, a prism set, and an eyepiece set. The frame is provided with a receiving space in which a focusing device is disposed such that the focusing device is linked with the objective lens set. The eye range, which is the distance between the central axes of the two ocular lenses, is adjusted by swiveling the two cylindrical bodies. Such conventional method and device as described above should be revolutionized.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide an innovative method and device for adjusting the eye range of an optical instrument by displacing prisms and ocular lenses of the optical instrument.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by a method and a device, which involve the application of a link mechanism comprising a traction member for linking each movable prism and each movable ocular lens such that the central axis of effective diameter of each movable prism and the central axis of each movable ocular lens are coaxial. The traction member is actuated by an adjustment device to displace such that the two movable prisms and the two ocular lens move respectively along a base surface, and that the central axes of effective diameters of the two movable prisms and the central axes of the corresponding ocular lenses remain coaxial. The distance (eye range) between the central axes of the two ocular lenses is adjusted by moving the link mechanism.
The foregoing objective, features, functions, and advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings.
REFERENCES:
patent: 3814496 (1974-06-01), Muka
patent: 5444568 (1995-08-01), Williams et al.
Kao Po-Sung
Liu Yuan-Kai
Tu Hao
Wang Ming-Hung
Asia Optical Co. Inc.
Browdy & Neimark
Spyrou Cassandra
Treas Jared
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