Active auto focus system improvement

Details Active auto focus system improvement Active auto focus system improvement

G - Physics

03

B

343/5, 95/53.4

G03B 3/10 (2006.01) G01S 17/46 (2006.01) G01S 17/88 (2006.01) G02B 7/32 (2006.01)

Patent

CA 1161932

1008454-US ABSTRACT OF THE DISCLOSURE An active auto focus system in which a beam of modulated energy is projected towards a subject to be focussed upon with the energy reflected therefrom directed towards a detector array. The detector array comprises a number of radiation responsive elements arranged in parallel. rows and in a pattern which permits the reflected energy to impinge upon at least one detector in each of the rows simultaneously. The arrangement allows a digital type out- put indicative of the position of the reflected energy on the array and thus the position of the subject from the cam- era.

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