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1. (WO2001031297) SYSTEM FOR TRACKING ANGULAR AND LINEAR MOTION
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/031297 International Application No.: PCT/US2000/026681
Publication Date: 03.05.2001 International Filing Date: 28.09.2000
Chapter 2 Demand Filed: 19.05.2001
IPC:
G01D 5/36 (2006.01)
G PHYSICS
01
MEASURING; TESTING
D
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5
Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
26
using optical means, i.e. using infra-red, visible or ultra-violet light
32
with attenuation or whole or partial obturation of beams of light
34
the beams of light being detected by photocells
36
Forming the light into pulses
Applicants:
QUANTUM DEVICES, INC. [US/US]; 112 Orbison Barneveld, WI 53507, US
Inventors:
STEVENS, James; US
MARTIN, Todd; US
Agent:
LASKA, Casimir, F.; Michael Best & Friedrich LLP 100 East Wisconsin Avenue Milwaukee, WI 53202, US
CARPENTER, David; Marks & Clerk Alpha Tower Suffolk Street Queensway Birmingham B1 1TT, GB
Priority Data:
09/425,80325.10.1999US
Title (EN) SYSTEM FOR TRACKING ANGULAR AND LINEAR MOTION
(FR) SYSTEM FOR TRACKING ANGULAR AND LINEAR MOTION
Abstract:
(EN) The invention provides a system for sensing angular motion. The system includes a light source, a transducing member, and a modulating member having a track of translucent and opaque regions positioned between the light source and the transducing member. The transducing member includes optical receivers spaced across a width larger than or equal to three translucent and three opaque regions. The optical receivers, which may be interlaced across the transducing member, generate a plurality of output signals that form at least one output channel signal. The system may further include a second track of translucent and opaque regions and a second interlaced transducing member. The second transducing member includes a second plurality of optical receivers arranged to generate a plurality of signals that may be used to generate at least one index signal.
(FR) The invention provides a system for sensing angular motion. The system includes a light source, a transducing member, and a modulating member having a track of translucent and opaque regions positioned between the light source and the transducing member. The transducing member includes optical receivers spaced across a width larger than or equal to three translucent and three opaque regions. The optical regions, which may be interlaced across the transducing member, generate a plurality of output signals that form at least one output channel signal. The system may further include a second track of translucent and opaque regions and a second interlaced transducing member. The second transducing member includes a second plurality of optical receivers arranged to generate a plurality of signals that may be used to generate at least one index signal.
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Designated States: AU, CA, JP
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)