Opto-electronic focusing-error detection device

Details Opto-electronic focusing-error detection device Opto-electronic focusing-error detection device

G - Physics

11

B

352/32.21

G11B 7/08 (2006.01) G02B 7/32 (2006.01) G02B 27/16 (2006.01) G11B 7/09 (2006.01) G11B 7/135 (2006.01)

Patent

CA 1200607

12 A B S T R A C T: "Opto-electronic focusing-error detection device". An optical focusing-error detection device comprises a beam splitter arranged in the path of a radia- tion beam originating from a plane on which is to be fo- cused, and a radiation-sensitive detection system compris- ing a plurality of detectors separated by narrow strips, a first strip being associated with a first one and a se- cond strip with the second one of two subbeams formed by the beam splitter. By arranging the two separating strips at an acute angle relative to each other it is possible to ensure that the centres of the radiation spots formed in the detector plane by the subbeams are disposed on the separating strips when focusing is correct.

428005

Affiliated with

Also associated with

Rating

Opto-electronic focusing-error detection 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 Opto-electronic focusing-error detection device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Opto-electronic focusing-error detection device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1182199