Sensor apparatus and method for sensing angular rotation of an object using light reflected off a rotor and bifurcation compensation

• Main Author: COOPER STEPHEN R. W
• Format: Patent
• Language: English
• Published: 17.12.2002
• Edition: 7
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

An apparatus (100) for sensing angular rotation includes a rotor (102) that is rotatable about an axis (104). The rotor (102) has an outer periphery (e.g., cylindrical outer sidewall 106) with a plurality of reflective facets (e.g., 108A-108J). Each juncture between each adjacent pair of the facets...