Projector with a linearly adjustable zoom projection lens

Details Projector with a linearly adjustable zoom projection lens Projector with a linearly adjustable zoom projection lens

2006-09-06

2010-02-09

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Lens support

Lens position adjustable

C353S100000, C353S119000, C359S694000, C359S701000, C359S825000

Reexamination Certificate

active

07658499

ABSTRACT:
A projector has a case, a zoom lens, a zoom ring, a control plate, a lodging element, a control rod, and a handle. The case has an opening, and the zoom ring is disposed within the case and nearby the opening, the zoom ring is moved back and forth to drive the zoom rod. The control plate is mounted on the case and laid over the opening movably, the lodging element is movably contacted with the control rod, wherein the handle accepts the force along the extending direction of the rectangular opening so as to let the control plate move the lodging element along the extending direction of the rectangular opening and further to move the control rod for continuously regulating the focal length of the zoom lens.

REFERENCES:
patent: 4103993 (1978-08-01), Winkler et al.
patent: 6933987 (2005-08-01), Menard
patent: 7246908 (2007-07-01), Salvatori et al.
patent: 7354161 (2008-04-01), Kuroda
patent: 7454132 (2008-11-01), Oya
patent: 2003/0164926 (2003-09-01), Nakano et al.
patent: 2006/0164610 (2006-07-01), Yoshikawa
patent: 2006/0251412 (2006-11-01), Liu
patent: 2006/0256303 (2006-11-01), Hamada
patent: 2008/0180639 (2008-07-01), Amano et al.
patent: 2003-43583 (2003-02-01), None
patent: 200428130 (2004-12-01), None

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