Optics: image projectors – Lens support – Lens position adjustable
Reexamination Certificate
2011-04-26
2011-04-26
Sohn, Seung C (Department: 2878)
Optics: image projectors
Lens support
Lens position adjustable
C359S223100
Reexamination Certificate
active
07931379
ABSTRACT:
A driving method of an optical actuator is applied to a projection system. The optical actuator includes a carrier, an optical element and an actuator component. The optical element is disposed at the carrier. The actuator component drives the carrier to rotate an angle. The driving method includes the steps of providing a driving signal having an initial section and a target section, and shifting the optical element between a position driven by the initial section and a position driven by the target section via the actuator component according to a first acceleration-deceleration section and a second acceleration-deceleration section. In addition, an optical actuator, a projection lens module and a projection system are also disclosed.
REFERENCES:
patent: 6028689 (2000-02-01), Michalicek et al.
patent: 7258451 (2007-08-01), Wang
Hsu Fu-Mei
Kuo Chin-Wei
Delta Electronics , Inc.
Muncy Geissler Olds & Lowe, PLLC
Sohn Seung C
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