Object detecting apparatus and irregularity detecting device...

Details Object detecting apparatus and irregularity detecting device... Object detecting apparatus and irregularity detecting device...

2006-09-19

2006-09-19

Le, Thien M. (Department: 2876)

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Systems controlled by data bearing records

Transportation

Reexamination Certificate

active

07108179

ABSTRACT:
An object detecting apparatus for detecting an object or a distance with the object includes at least one light receiving element for detecting a light quantity entering from a sensor window portion for example, a projection window portion and an entrance window portion through which an electromagnetic wave from an electromagnetic wave generation portion toward an object and a reflected electromagnetic wave from the object pass. Furthermore, an irregularity determining portion determines a state of at least one of the projection window portion and the entrance window portion using at least the detected light quantity of the light receiving element. For example, the light receiving element includes a first light receiving portion and a second light receiving portion which receive the light quantities of direct current part of light entering from the first and second light receiving portions.

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patent: 2002/0157887 (2002-10-01), Sugawara et al.
patent: 7-280925 (1995-10-01), None
patent: 2002-031685 (2002-01-01), None

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