Reflection type sensor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 16, 2003
Grant Date -
N/A
app pub date -
Nov 3, 2000
filing date -
Feb 4, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reflection type sensor includes a light emitting element emitting light to an object and including a plurality of LED chips disposed to be adjacent to each other and integrated into a package, and the LED chips emit light beams belonging to different wave bands. A light detecting element detects the light reflected on the object, and performs a photoelectric conversion for the light beams belonging to the different wave bands, thereby delivering a light signal. A light detecting circuit determines the presence or absence of the object on the basis of the light signal delivered from the light detecting element.
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