Sensor using roof mirror/roof prism array scale, and...

Details Sensor using roof mirror/roof prism array scale, and... Sensor using roof mirror/roof prism array scale, and...

2006-04-04

2006-04-04

Sohn, Seung C. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S23700G

Reexamination Certificate

active

07022974

ABSTRACT:
A divergent light beam from a light source unit having a plurality of light-emitting regions is almost contained within the surface of a reflecting body that is an array of micro roof mirrors/roof prisms disposed in a regular manner. The light beam emitted from the light source unit with an angle of divergence is reflected by the reflecting body and is almost converged on a light-receiving surface. As a result, there is increased the ray density of a light beam on the light-receiving surface.

REFERENCES:
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patent: 2002/0000515 (2002-01-01), Takayama et al.
patent: 1 184 645 (2000-08-01), None
patent: 01/63215 (2001-08-01), None
Sawada, et al. “Monolithic-Integrated Microlaser Encoder” Applied Optics, Optical Society of America. Nov. 20, 1999, pp. 6866-6873.
European Search Report, Dated Aug. 26, 2003.

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