Variable-apex prism controller

Details Variable-apex prism controller Variable-apex prism controller

1993-08-27

1996-01-02

Nguyen, Viet Q.

Optical: systems and elements

Light control by opaque element or medium movable in or...

With rotating or pivoting element

359554, 359557, 359198, 359197, 359831, G02B 2764

Patent

active

054813948

ABSTRACT:
A variable-apex prism controller which controls a variable-apex prism composed of two transparent optical members and an optically transparent substance sealed in the space defined between the two optical members, wherein the two optical members of the variable-apex prism are rotated by rotating devices around rotation axes orthogonal to each other in accordance with information from a movement detecting device. When correcting any blur by deflecting a transmitted light flux, the maximum blur correction angle .epsilon..sub.max obtained along the directions of the rotation axes of the optical members is set beforehand. The rotation amounts of the two optical members are restricted in such a way that the maximum blur correction angle for any blur occurring along a direction different from the rotation axes is substantially the same as the above-mentioned maximum correction angle .epsilon..sub.max.

REFERENCES:
patent: 5210635 (1993-05-01), Nagata et al.
patent: 5311367 (1994-05-01), Ohki et al.
patent: 5315435 (1994-05-01), Horiuchi
patent: 5331467 (1994-07-01), Sato

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