Photocell incorporating a lightguide and matrix composed of...

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit

Reexamination Certificate

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C250S227110, C257S432000, C438S065000

Reexamination Certificate

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06858828

ABSTRACT:
A photocell having an entry face for the light and a photosensitive element, as well as to a matrix composed of such photocells. A lightguide-forming element placed between the entry face and the photosensitive element of the photocell ensures optical coupling between the latter two components. It makes it possible to place on either side of the photosensitive element electronic components for reading and for controlling the photocell, while reducing the loss of light incident on the entry face corresponding to the rays which would strike these electronic components. This lightguide-forming element is composed of at least three dielectric materials having different respective optical refractive indices and placed within concentric volumes.

REFERENCES:
patent: 5321249 (1994-06-01), Nomura
patent: 5952645 (1999-09-01), Wang et al.
patent: 6127668 (2000-10-01), Baek
patent: 20040159774 (2004-08-01), Mishina et al.
patent: 61049466 (1986-03-01), None
patent: 06169075 (1994-06-01), None
patent: 10154805 (1998-06-01), None
patent: 2001237405 (2001-08-01), None
Van Zant, P., “Microchip Fabrication—A Practical Guide to Semiconductor Processing”,Basic Patterning—Developing to Final Inspection, Chapter 9, pp. 256-280, 2000.
French Preliminary Search Report dated Jul. 19, 2002 for French Application No. 0112051.

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