Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2007-11-06
2007-11-06
Pyo, Kevin (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C385S012000, C385S090000
Reexamination Certificate
active
11455323
ABSTRACT:
A light pipe, a system and a method measure light attenuation from an optical fiber connected to a light source. The optical fiber transmits light from the light source to a light detector to determine a distance between the optical fiber and the light detector. The optical fiber attenuates light outwardly with respect to the fiber. A layer receives the optical fiber to reflect and/or to refract light transmitted by the optical fiber inwardly. A rod prevents light from attenuating from the optical fiber. A microprocessor may be connected to the light detector for determining the amount of light attenuated from the optical fiber. The microprocessor determines the distance between the light detector and the optical fiber based on the amount of light transmitted from the optical fiber to the light detector. The microprocessor transmits an output signal to a transducer for activating an arm to move an end of the layer inwardly or outwardly with respect to an end of the optical fiber. The light attenuated from the optical fiber and/or the light detectable by the light detector may correspond to a distance between the optical fiber and the light detector within an interior of the layer. The microprocessor may identify the distance between the optical fiber and the light detector based on the light measured and/or detected by the light detector from the optical fiber which may not be attenuated from the optical fiber.
REFERENCES:
patent: 3368751 (1968-02-01), Merrill
patent: 3885875 (1975-05-01), Howe, Jr. et al.
patent: 4150299 (1979-04-01), Kasiewicz et al.
patent: 4501642 (1985-02-01), Wells
patent: 4661695 (1987-04-01), Mori et al.
patent: 4736674 (1988-04-01), Stoll
patent: 4806707 (1989-02-01), Landmeier
patent: 4902903 (1990-02-01), Segerson et al.
patent: 4970361 (1990-11-01), Fuse
patent: 5182979 (1993-02-01), Morgan
patent: 5231959 (1993-08-01), Smietana
patent: 5271505 (1993-12-01), Low
patent: 5705742 (1998-01-01), Fox et al.
patent: 5744705 (1998-04-01), Derouen et al.
patent: 5799626 (1998-09-01), Ponsford et al.
patent: 5917985 (1999-06-01), Im
patent: 5977778 (1999-11-01), Chan et al.
patent: 5988676 (1999-11-01), Lotito et al.
patent: 6058776 (2000-05-01), Algers et al.
patent: 6952009 (2005-10-01), Engstrand
patent: 2004/0089797 (2004-05-01), Engstrand
patent: 2006/0065822 (2006-03-01), Engstrand
patent: 2007/0069163 (2007-03-01), Enstrand
patent: 2007/0075226 (2007-04-01), Engstrand
patent: 2007/0075229 (2007-04-01), Engstrand
Patents & TMS P.C.
Phaedrus, LLC
Pyo Kevin
LandOfFree
Light pipe, system and method for measuring light attenuation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light pipe, system and method for measuring light attenuation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light pipe, system and method for measuring light attenuation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3858559