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Title:
SENSOR STRUCTURE
Document Type and Number:
Japanese Patent JP2005294836
Kind Code:
A
Abstract:

To provide a sensor structure that suppresses a delay in a photodiode.

The sensor structure, particularly, the sensor structure constituting a part of a reflected light barrier includes a carrier 1. On the carrier 1, a photodiode 3, a first light emitting diode 4 for transmitting a measuring light beam, particularly, a pulse-shaped measuring light beam, a second light emitting diode 5 for transmitting a reference light beam, particularly, a pulse-shaped reference light beam being offset temporally to the measuring light beams, and a light transmission housing 6 for accommodating the photodiode 3 and the two light emitting diodes 4 and 5 are arranged. The second light emitting diode 5 is arranged such that the reference light beam transmitted by the light emitting diode 5 does not substantially enter the photodiode 3 from the side.


Inventors:
Schmidt, Manuel
Figueria, Robert
Application Number:
JP2005000100421
Publication Date:
October 20, 2005
Filing Date:
March 31, 2005
Export Citation:
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Assignee:
VISHAY SEMICONDUCTOR GMBH
International Classes:
H01L31/12; G01V8/20; H01J40/14; (IPC1-7): H01L31/12
Domestic Patent References:
JPH06102092A1994-04-12
Attorney, Agent or Firm:
橋本 剛
富岡 潔