Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1983-11-28
1986-11-25
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250237G, G01D 534
Patent
active
046251090
ABSTRACT:
An optical encoder apparatus is disclosed comprising a light source, a lens for focusing and collimating light emitted from the light source, a cap for receiving and aligning the light source and the lens, a scale movable relative to the cap including alternating opaque and translucent regions for blocking and transmitting light emitted from the light source, an array of a plurality of photodiodes for converting light emitted from the light source into electrical signals, a mask mounted in a fixed position between the scale and the photo transducer array, including in the mask alternating opaque and translucent regions arranged to act in concert with the movable scale to modulate the light received by the photo transducers, a mounting post for mounting the optical encoder apparatus, a receptor for attaching to the cap including a deck for receiving and aligning the photo transducer array, and including a cavity for receiving the mounting post, and a clamp for securing the receptor, and therefore the optical encoder apparatus, to the mounting post. The method for manufacturing the encoder apparatus is also disclosed and claimed.
REFERENCES:
patent: 3400275 (1968-09-01), Trump
patent: 3633038 (1972-01-01), Falk
patent: 3693023 (1972-09-01), Wasserman
patent: 3693024 (1972-09-01), Hulle et al.
patent: 3894232 (1975-07-01), Laspesa
patent: 3995156 (1976-11-01), Angersbach et al.
patent: 4075478 (1978-02-01), Walker
patent: 4117320 (1978-09-01), Tomlinson et al.
patent: 4135217 (1979-01-01), Jacques et al.
patent: 4152589 (1979-05-01), Mitchell
patent: 4184071 (1980-01-01), Fryer et al.
patent: 4224514 (1980-09-01), Weber
patent: 4266125 (1981-05-01), Epstein et al.
patent: 4345149 (1982-08-01), Blaser
patent: 4396959 (1983-08-01), Harrison et al.
Gatto James G.
Nelms David C.
Quantum Corporation
LandOfFree
Optical encoder apparatus and methods does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical encoder apparatus and methods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical encoder apparatus and methods will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1159931