Photodetector, method of using the same, and image forming...

Details Photodetector, method of using the same, and image forming... Photodetector, method of using the same, and image forming...

2007-02-27

2007-02-27

Mondt, Johannes (Department: 3663)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S216000, C250S559160, C356S342000

Reexamination Certificate

active

10377643

ABSTRACT:
A photodetector includes a light emitting portion for applying light, a light receiving portion for sensing the light, and a light guiding member3for guiding the light from the light emitting portion to a surface to be measured and guiding detection light from the surface to be measured to the light receiving portion. The light guiding member has a sheet-like optical transmission medium, which is disposed at a portion facing to the surface to be measured and transmits the light by internal reflection. The sheet-like optical transmission member has an optical aperture facing to the surface to be measured.

REFERENCES:
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patent: 4796065 (1989-01-01), Kanbayashi
patent: 5218212 (1993-06-01), Sato et al.
patent: 6583444 (2003-06-01), Fjelstad
patent: 6-175501 (1994-06-01), None
patent: 7-177091 (1995-07-01), None
patent: 2002-98637 (2002-04-01), None
Merriam-Webster's Collegiate Dictionary, tenth Edition, 1999 (p. 1079), Merriam-Webster, Incorporated, Springfield, Massachusetts, USA.
J.D. Jackson, “Classical Electrodynamics”, John Wiley & Sons, New York, sixth edition (1967), pp. 220-221.

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