Means for controlling the power output of laser diodes in a ROS

Details Means for controlling the power output of laser diodes in a ROS Means for controlling the power output of laser diodes in a ROS

1995-06-20

1997-08-19

Phan, James

Optical: systems and elements

Deflection using a moving element

359212, 359216, 359204, 250205, G02B 2608

Patent

active

056594143

ABSTRACT:
The present invention provides a means and method for efficiently and automatically monitoring and adjusting the power output of either a single or a dual beam laser diode array used to provide the scanning beams in a ROS system. Collimated light outputs from a collimator lens assembly following either a single or dual beam laser are reflected along an optical path to impinge on one or two photodiodes positioned so as to intercept the reflected light. The photodiode output is proportional to the power output of the laser diode associated with the photodiode. In one multi-beam embodiment, polarization of the laser diode output is controlled so as to ensure that only outputs from an associated laser diode is sensed by an associated photodiode. In another embodiment, a half wave plate is used to rotate the polarization of one of the laser diodes.

REFERENCES:
patent: 4796961 (1989-01-01), Yamada et al.
patent: 4796964 (1989-01-01), Connell et al.
patent: 5233175 (1993-08-01), Latta et al.

Affiliated with

Also associated with

Rating

Means for controlling the power output of laser diodes in a ROS does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Means for controlling the power output of laser diodes in a ROS , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Means for controlling the power output of laser diodes in a ROS will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1108892