Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2008-02-12
2010-12-14
Mahoney, Christopher E (Department: 2862)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C359S640000, C359S833000
Reexamination Certificate
active
07852732
ABSTRACT:
A lens apparatus has a focusing lens unit, a separating optical unit disposed on an optical axis of the lens apparatus, a focus detection unit that detects focus condition using a light beam from the separating optical unit, a first drive unit that drives the focusing lens unit based on an output of the focus detection unit, and a second drive unit that drives the separating optical unit. An optical separating surface that the separating optical unit has reflectance that varies continuously in a first direction. The second drive unit drives or moves the separating optical unit in the first direction.
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Aug. 2, 2010 European Search Report in European Patent Appln. No. 08151621.3.
Izuhara Isamu
Tomita Yasuyuki
Yakita Shin-ichiro
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Mahoney Christopher E
Parker Autumn
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