Photoreflective detector including a light emitting element and

Details Photoreflective detector including a light emitting element and Photoreflective detector including a light emitting element and

1998-07-09

2000-05-09

Picardat, Kevin M.

Semiconductor device manufacturing: process

Making device or circuit responsive to nonelectrical signal

Responsive to electromagnetic radiation

438 48, 438 56, 438 66, H01L 2100

Patent

active

060603372

ABSTRACT:
A photoreflective detector includes a light emitting element; and a light receiving element located so as to receive light emitted from the light emitting element and reflected by an object. The light emitting element and the light receiving element are located to have different distances from the object so as to avoid direct incidence of the light emitted by the light emitting element on the light receiving element.

REFERENCES:
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patent: 4900910 (1990-02-01), Doi
patent: 5525828 (1996-06-01), Bassous et al.
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patent: 5580795 (1996-12-01), Schimert et al.
patent: 5583076 (1996-12-01), Yoshizawa et al.
patent: 5656098 (1997-08-01), Ishikawa et al.
patent: 5682062 (1997-10-01), Gaul

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