Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-10-19
2008-12-16
Epps, Georgia Y (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S221000, C385S012000, C385S039000, C385S063000
Reexamination Certificate
active
07465916
ABSTRACT:
One embodiment of the present invention provides an optical detection sensor configured so as to irradiate exit light emitted from a light source onto an object to be measured, the object being disposed a relative distance away from an end face of a first optical fiber, and receive the reflection light therefrom with a second and a third optical fiber, thereby computing a displacement amount of the object. In this sensor, the first optical fiber is disposed so that an angle between a longitudinal direction thereof and a normal line to an incident surface of the object becomes θ; the second and the third optical fiber are disposed so as to be mutually parallel and so that an angle between a longitudinal direction of the second and the third optical fiber and the normal line becomes θ; the first optical fiber is disposed symmetrically with the second and the third optical fiber with respect to the normal line; and the first to the third optical fiber have a dNA/dλ of 4×10−5or less with respect to a wavelength of the light source.
REFERENCES:
patent: 4479717 (1984-10-01), Cornillault
patent: 4996418 (1991-02-01), Iwamoto et al.
patent: 5068527 (1991-11-01), Iwamoto et al.
patent: 6433350 (2002-08-01), Hwang et al.
patent: 2002/0027300 (2002-03-01), Hartmann et al.
patent: 2005/0129380 (2005-06-01), Takeuchi et al.
patent: 2 399 000 (1979-02-01), None
patent: 6-8724 (1994-02-01), None
patent: 10-9813 (1998-01-01), None
patent: 3304696 (2002-05-01), None
patent: 2003-214966 (2003-07-01), None
Corning Single Mode Optical Fiber SMF, “Corning SMG-28 Optical Fiber, Product Information”, Apr. 2002.
Horimoto Keiichi
Okude Satoshi
Sakamoto Akira
Epps Georgia Y
Fujikura Ltd.
Sughrue & Mion, PLLC
Williams Don
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