Mirror-type beam steerer having a virtual pivot

Details Mirror-type beam steerer having a virtual pivot Mirror-type beam steerer having a virtual pivot

1975-12-11

1977-05-24

Corbin, John K.

G02F 129

Patent

active

040252035

ABSTRACT:
A mirror-type beam steering apparatus employs at least one flexible mirror support member having, generally, the shape of the Greek letter lambda. Each such member has a pair of flexible leg sections that slant toward one another and are truncated into an interconnecting section. The diverging ends of the leg sections are fixed and an optical beam steering mirror is mounted to the interconnecting section. With this arrangement, a "virtual pivot" occurs at the intersection of the leg section axis (although the legs themselves do not intersect), and torque components applied to deflect the mirror result in rotation of the mirror about the virtual pivot axis. In preferred forms of the invention, the mirror's center of gravity is located on the virtual pivot axis, thereby reducing the inertial resistance to rotation and improving steerer performance.

REFERENCES:
patent: 3758199 (1973-09-01), Thaxter

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