Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2007-03-27
2007-03-27
Allen, Stephone B. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S226000, C250S227210, C033S0010PT, C341S013000
Reexamination Certificate
active
11079696
ABSTRACT:
A passive all fiber optic encoder that will be able to determine speed, position, and direction of movement of a movable object. The all passive encoder utilizes no electronics within the sensing part and therefore is deployable in harsh environments, electrical, electromagnetic and radiation fields, otherwise not possible with conventional electronic encoders. The system utilizes a multiwavelength light source and one optical fiber leading to the encoder sensor housing which has a shutter, a light filter assembly and reflective mirror. The movement of the shutter produces a sequential series of light impulses sequenced proportional to the movement of the shutter. The light filter assembly utilizes a minimum of two different filters each of which passes or rejects light within a certain space and wavelength range.
REFERENCES:
patent: 4546466 (1985-10-01), Lopiccolo
patent: 4652747 (1987-03-01), Ellis
patent: 4654523 (1987-03-01), Tanaka et al.
patent: 4713541 (1987-12-01), Renaud et al.
patent: 4719346 (1988-01-01), Taillebois et al.
patent: 4739163 (1988-04-01), Gambs et al.
patent: 4740688 (1988-04-01), Edwards
patent: 4761551 (1988-08-01), Edwards et al.
patent: 4761777 (1988-08-01), Edwards et al.
patent: 4769537 (1988-09-01), Taillebois et al.
patent: 4774494 (1988-09-01), Extance et al.
patent: 4833317 (1989-05-01), Huggins
patent: 4849624 (1989-07-01), Huggins
patent: 4874245 (1989-10-01), Spillman, Jr. et al.
patent: 4931636 (1990-06-01), Huggins
patent: 4958072 (1990-09-01), Hofler et al.
patent: 4964727 (1990-10-01), Huggins
patent: 4999489 (1991-03-01), Huggins
patent: 5029987 (1991-07-01), Shinomiya
patent: 5036192 (1991-07-01), Ishizuka et al.
patent: 5038032 (1991-08-01), Nishimura et al.
patent: 5051579 (1991-09-01), Tsukiji et al.
patent: 5068528 (1991-11-01), Miller et al.
patent: 5073710 (1991-12-01), Takagi et al.
patent: 5073711 (1991-12-01), Brininstool et al.
patent: 5129725 (1992-07-01), Ishizuka et al.
patent: 5198873 (1993-03-01), Ishizuka et al.
patent: 5223708 (1993-06-01), Van Deventer
patent: 5276323 (1994-01-01), Nakaho
patent: 5424535 (1995-06-01), Albion et al.
patent: 5650612 (1997-07-01), Criswell et al.
patent: 5818221 (1998-10-01), Baruch
patent: 6043483 (2000-03-01), Schreiber
patent: 6407378 (2002-06-01), Sakaguchi
patent: 6534762 (2003-03-01), Kieselbach et al.
patent: 6610975 (2003-08-01), Ito et al.
patent: 6654128 (2003-11-01), Takayama et al.
Allen Stephone B.
Lee Patrick J.
Lipkin Sandy
Munro Jack C.
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