Optical deflector and beam scanner using the same

Details Optical deflector and beam scanner using the same Optical deflector and beam scanner using the same

1998-06-11

1999-12-14

Spyrou, Cassandra

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359204, 359212, 359216, G02B 2608

Patent

active

060025069

ABSTRACT:
An optical deflector of the present invention comprises: a mirror 20 for reflecting light; a yoke 24 for rotatably holding the mirror 20 via a plate spring 21; a coil 27 and a magnet 27 for rotating the mirror 20 with respect to the yoke 24; a magnet fixing plate 28 for holding the yoke 24; and positioning pins 31a and 31b, a part of which is inserted into the yoke 24, for positioning the yoke 24. The magnet 27 forms a magnetic circuit in the yoke 24. The positioning pins 31 and 31b are made of a magnetic material so as not to obstruct the magnetic circuit formed in the yoke 24.

REFERENCES:
patent: 5276545 (1994-01-01), Daun et al.
patent: 5428473 (1995-06-01), Takizawa et al.
patent: 5731888 (1998-03-01), Arai

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