Optical sensor for determining the focussing error in an...

Details Optical sensor for determining the focussing error in an... Optical sensor for determining the focussing error in an...

G - Physics

11

B

352/32.21, 88/94

G11B 7/09 (2006.01) G01J 1/36 (2006.01) G02B 27/40 (2006.01)

Patent

CA 1003672

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