Optical focusing device

Details Optical focusing device Optical focusing device

G - Physics

03

B

88/94.5

G03B 3/00 (2006.01) G02B 7/04 (2006.01) G11B 7/09 (2006.01) G11B 7/12 (2006.01)

Patent

CA 1160874

PHN. 9777 ABSTRACT: A focusing system for focusing a radiation beam onto an object, in particular an optical disc. The focus- ing system comprises focusing-error detection means and two control elements for correcting the focusing depending on the detected focusing error. The detection means are constructed so that via one of the two control elements a feedback servo system is obtained whilst via the other control element a servo system without feedback, i.e. a feed-forward system, is obtained.

380561

Affiliated with

Also associated with

Rating

Optical focusing device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-258971