The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 1986
Filed:
Nov. 28, 1983
Brian J Nixon, Pleasanton, CA (US);
Quantum Corporation, Milpitas, CA (US);
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.