Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1988-08-12
1990-03-13
Arnold, Bruce Y.
Optics: measuring and testing
Range or remote distance finding
With photodetection
350 373, 350 9613, 356151, G02B 532
Patent
active
049078488
ABSTRACT:
An encoder includes a holographic element containing a plurality of holograms, one single mode fiber input line and N fiber optic output lines, which may be either single mode or multimode optical fiber. A light source is arranged to illuminate a selected one of the holograms. Each hologram is configured to receive an input light beam from the light source and to produce thereform an optical output signal encoded to correspond to a digital word. A system for forming the optical signal encoder includes a light source and an arrangement for receiving a first light beam therefrom and producing a light beam array. The system includes an optical switching arranged to receive all of the beams of the light beam array and transmit only selected beams therefrom. A holographic element is arranged such that the beams transmitted by the optical switching means may impinge thereon to form source beams for forming an array of holograms. The system further includes an arrangement for receiving a second light beam from the light source and directing the second beam to a selected portion of the holographic element to form a reference beam for production of a hologram in the holographic element.
REFERENCES:
patent: 4021606 (1977-05-01), Takeda et al.
patent: 4389090 (1983-06-01), LeFevre
patent: 4493528 (1985-01-01), Shaw et al.
patent: 4510575 (1985-04-01), Mueller et al.
patent: 4611885 (1986-09-01), Boirat
patent: 4729622 (1988-03-01), Pavlath
Bergh, et al., "Single Mode Fibre Optic Directional Coupler," Electronics Letters, Mar. 27, 1980, vol. 16, No. 7, pp. 260-261.
Arnold Bruce Y.
Litton Systems Inc.
Ryan J.
LandOfFree
Holographic rotary and linear encoder and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Holographic rotary and linear encoder and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Holographic rotary and linear encoder and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-47013