Optical pointing device

Details Optical pointing device Optical pointing device

2005-03-08

2009-06-09

Shalwala, Bipin (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

C345S166000

Reexamination Certificate

active

07545360

ABSTRACT:
An optical pointing device is disclosed. The optical pointing device includes: a case having an opening portion formed on a bottom thereof; a light source installed in the case; an illuminating member for reflecting light emitted from the light source to the exterior through one side of the opening portion of the case; a lens member installed in the case to collect the light which is reflected by the illuminating member and then is reflected from the exterior of the case to enter through the other side of the opening portion; an image sensor installed above the lens member to receive the collected light; and a masking member installed closely to the lens member and having a light collecting hole which exposes a significant surface of the lens member.

REFERENCES:
patent: 4857903 (1989-08-01), Zalenski
patent: 6218659 (2001-04-01), Bidiville et al.
patent: 6225981 (2001-05-01), Lu
patent: 6400670 (2002-06-01), Dang
patent: 2004/0113886 (2004-06-01), Lee
patent: 1203686 (1998-12-01), None
patent: 02240664.6 (2002-06-01), None
patent: 10-2003-0069648 (2003-10-01), None
Chinese Office Action for Application 2005-10-0535534; Date: Jul. 7, 2006.

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