Title:
センサ
Document Type and Number:
Japanese Patent JP4238290
Kind Code:
B2
Abstract:
Sensor(s) may be such that light-projecting component(s) and light-receiving component(s) are arranged therein. Furthermore, such sensor(s) may be provided with optical path varying means for varying projected light optical path(s) and/or received light optical path(s) so as to physically vary overlapping zone(s) in which the projected light optical path(s) and the received light optical path(s) at least partially overlap. The optical path varying means may carry out adjustment of optical sensitivity by increasing the extent(s) of the overlapping zone(s) when carrying out detection with respect to zone(s) distant from such sensor(s) and/or decreasing the extent(s) of the overlapping zone(s) when carrying out detection with respect to zone(s) proximate to such sensor(s).
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Inventors:
Matsuyama Toshiyasu
Kiyofumi Fukuda
Yasuhiro Takada
Kiyofumi Fukuda
Yasuhiro Takada
Application Number:
JP2002333704A
Publication Date:
March 18, 2009
Filing Date:
November 18, 2002
Export Citation:
Assignee:
Optex Co., Ltd.
International Classes:
G01V8/14; G01J1/02; G01J1/06; G01V8/10; G01V8/12
Domestic Patent References:
| JP6068755A | ||||
| JP62134603A | ||||
| JP2003279405A | ||||
| JP2003098265A |
Attorney, Agent or Firm:
Yoshiro Kurauchi