Range finder

Details Range finder Range finder

2006-05-16

2006-05-16

Tarcza, Thomas H. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S004020, C356S004030, C356S004100, C356S005100

Reexamination Certificate

active

07046344

ABSTRACT:
A range finder includes a package, a semiconductor chip, an optical casing, a lens holder, a first lens, and a second lens. The first and second lenses are attached to the lens holder. The lens holder is formed of a material having a thermal expansion coefficient equal or close to that of the semiconductor chip. The range finder is constructed such that a distance between the two lenses and a distance between two light detecting sections on the semiconductor chip do not change significantly relative to each other due to the thermal expansion or contraction.

REFERENCES:
patent: 5315609 (1994-05-01), Tanaka et al.
patent: 5760885 (1998-06-01), Yokoyama et al.
patent: 2002/0134000 (2002-09-01), Varshneya et al.
patent: 10-232128 (1998-02-01), None
patent: 10-232128 (1998-09-01), None
patent: 3310079 (2002-05-01), None

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