Laser scanning unit

Details Laser scanning unit Laser scanning unit

2007-03-13

2007-03-13

Cherry, Euncha P. (Department: 2872)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

C359S872000

Reexamination Certificate

active

10750757

ABSTRACT:
A laser scanning unit mainly includes a semiconductor laser, a collimator, a micro electronic mechanic system (MEMS) oscillatory mirror, and an fθ lens or an f sin θ lens. The MEMS oscillatory mirror is disposed between the collimator and the fθ lens to replace a conventional rotary polygonal mirror for controlling a direction in which laser beams are projected from the oscillatory mirror to the fθ lens. With the MEMS oscillatory mirror, the cylindrical lens may be omitted from the laser scanning unit and noises produced by the polygonal mirror rotating at high speed may be avoided. Moreover, the MEMS oscillatory mirror allows bi-directional scanning to therefore enable increased scanning frequency, simplified structure, and improved scanning efficiency.

REFERENCES:
patent: 5363200 (1994-11-01), Frohbach et al.
patent: 6271514 (2001-08-01), Thomas et al.
patent: 6724509 (2004-04-01), Lee
patent: 6812669 (2004-11-01), Hagen

Affiliated with

Also associated with

Rating

Laser scanning unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laser scanning unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser scanning unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3798067