Optics: image projectors – Lens support – Lens position adjustable
Reexamination Certificate
2011-06-07
2011-06-07
Luu, Thanh X (Department: 2878)
Optics: image projectors
Lens support
Lens position adjustable
C359S813000
Reexamination Certificate
active
07954964
ABSTRACT:
A projector includes: a projection position adjusting device that adjusts a projection position of a projection optical device. The projection position adjusting device includes: adjusting and driving units that move a first moving plate and a second moving plate. The adjusting and driving unit include: a pair of worms that have a columnar shape and have threads on outer circumferences thereof; and a pair of sliders that are screwed in the pair of worms, respectively. The pair of worms are disposed to extend along the first direction or the second direction. One of the sliders engages with one of moving plates. Engaging structures including inclining engaging holes that extend in a direction crossing the direction in the plane orthogonal to the projecting direction and engaging projections inserted through the inclining engaging holes are provided in the other slider and the other moving plate.
REFERENCES:
patent: 2009/0002645 (2009-01-01), Lee et al.
patent: A-2004-245956 (2004-09-01), None
patent: A-2004-317986 (2004-11-01), None
patent: A-2006-133419 (2006-05-01), None
patent: A-2007-108460 (2007-04-01), None
patent: A-2007-163649 (2007-06-01), None
patent: A-2007-256318 (2007-10-01), None
Kitahara Wataru
Kurihara Toru
Nakamura Kunihisa
Luu Thanh X
Oliff & Berridg,e PLC
Seiko Epson Corporation
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