Two-dimensional optical scanner

Details Two-dimensional optical scanner Two-dimensional optical scanner

1994-11-28

1996-11-26

Pitts, Harold

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

235472, G02B 2608

Patent

active

055791484

ABSTRACT:
A two-dimensional optical scanner not affected by acceleration disturbances. The two-dimensional optical scanner includes a mirror section having at least one mirror surface formed thereon. A first frame is provided outside the mirror section with a first clearance therebetween. First springs connect the mirror section and the first frame and torsionally vibrating about an axis passing through the center of gravity of the mirror section. A second frame is provided outside the first frame with a second clearance therebetween, and second springs connect the first frame and the second frame. The second springs torsionally vibrate about an axis passing through the center of gravity of mirror section. Piezoelectric bimorphs 21, 22, 23, and 24 drive the optical scanner to impart a torsional oscillation to the first springs and the second springs.

REFERENCES:
patent: 3532408 (1970-10-01), Dostal
patent: 3794410 (1974-02-01), Elliott
patent: 4317611 (1982-03-01), Petersen
patent: 5245464 (1993-09-01), Jensen
patent: 5268784 (1993-12-01), Chaya
patent: 5280165 (1994-01-01), Dvorkis et al.

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