Lens-shifting device

Details Lens-shifting device Lens-shifting device

2011-04-12

2011-04-12

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Lens support

Lens position adjustable

C359S819000, C359S813000, C359S694000

Reexamination Certificate

active

07922343

ABSTRACT:
A lens-shifting device including a base, two fixing rods, a sliding plate, a first and a second gear set is provided. The sliding plate is slidably mounted on the fixing rods via the fixing rods. A lens is fixed on the sliding plate and the sliding plate has a rack disposed on one side thereof. The first gear set has a first gear and a worm gear co-axial therewith. One of the fixing rods passes through the first gear such that the first gear and the worm gear may rotate relative to the fixing rod. The second gear set having a worm wheel and a second gear co-axial therewith is disposed between the fixing rod and the rack. The worm gear is for driving the worm wheel and the second gear is used for driving the rack such that the sliding plate moves relative to the fixing rods.

REFERENCES:
patent: 6909560 (2005-06-01), Lin et al.
patent: 6966657 (2005-11-01), Van De Velde et al.
patent: 57-124318 (1982-08-01), None
patent: M245456 (2004-10-01), None
patent: I248548 (2006-02-01), None
“Notice of Allowance of Taiwan Counterpart Application,” issued on Sep. 29, 2010, p. 1-p. 4, in which the listed references were cited.

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