Dynamic laser diode aperture for optical scanners

Details Dynamic laser diode aperture for optical scanners Dynamic laser diode aperture for optical scanners

1991-05-13

1993-12-28

Arnold, Bruce Y.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359212, 359220, 359894, 359900, 235455, 235467, G02B 2602, G02B 2608, G02B 500

Patent

active

052744914

ABSTRACT:
A dynamic laser diode aperture for collimating light from a laser diode within an optical scanner which increases the power of the beam to a predetermined maximum. The optical scanner includes a motor having a hollow circular shaft through which the light passes. A lens member focuses the light, and the dynamic aperture, located within a cap member within an end of the motor shaft closest to the laser, collimates the focused light. The dynamic aperture approximates the shape of the unfocused light pattern from the laser diode. In the preferred embodiment, the dynamic aperture is generally rectangular in shape and rotates with the motor shaft.

REFERENCES:
patent: 3588249 (1971-06-01), Studebaker
patent: 4699447 (1987-10-01), Howard
patent: 4722581 (1988-02-01), Hamada et al.
patent: 4967076 (1990-10-01), Schuhmacher et al.
patent: 4971410 (1990-11-01), Wike, Jr. et al.
patent: 5074628 (1991-12-01), Khattak et al.

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