Photography – With exposure objective focusing means – focusing aid – or... – Lens drive circuit or motor structure
Reexamination Certificate
2005-11-17
2008-11-18
Blackman, Rochelle (Department: 2862)
Photography
With exposure objective focusing means, focusing aid, or...
Lens drive circuit or motor structure
C396S134000, C396S137000, C359S822000, C359S823000, C359S826000, C074S034000, C074S409000, C074S440000
Reexamination Certificate
active
07454135
ABSTRACT:
A camera system incorporating a seamless lens-drive switching mechanism includes a lens drive ring, a manual operation ring, a motor, a first one-way rotational transfer mechanism preventing the manual operation ring and the lens drive ring from being connected with each other in a first neutral state, and maintains the first neutral state even if the lens drive ring is rotated by the motor; a second one-way rotational transfer mechanism which prevents the motor and the lens drive ring connecting with each other in a second neutral state, connects the motor with the lens drive ring when the motor rotates from the second neutral state, and maintains the second neutral state even if the lens drive ring is rotated by the manual operation ring; and a controller which stops and reverses the motor to bring the second one-way rotational transfer mechanism into the second neutral state.
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English language Abstract of JP 2-253214.
English language Abstract of JP 02-253210.
Iikawa Makoto
Nakata Masahiro
Blackman Rochelle
Greenblum & Bernstein P.L.C.
Hoya Corporation
Strieb Michael A
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