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1. WO2004008077 - OPTICAL ENCODER

Publication Number WO/2004/008077
Publication Date 22.01.2004
International Application No. PCT/IB2003/003039
International Filing Date 01.07.2003
IPC
A61B 6/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
G01B 3/10 2006.01
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
3Instruments as specified in the subgroups and characterised by the use of mechanical measuring means
10Measuring tapes
G01D 5/347 2006.01
GPHYSICS
01MEASURING; TESTING
DMEASURING 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
5Mechanical 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
26using optical means, i.e. using infra-red, visible or ultra-violet light
32with attenuation or whole or partial obturation of beams of light
34the beams of light being detected by photocells
347using displacement encoding scales
CPC
A61B 6/4464
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
44Constructional features of apparatus for radiation diagnosis
4429related to the mounting of source units and detector units
4464the source unit or the detector unit being mounted to ceiling
A61B 6/547
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
54Control of apparatus or devices for radiation diagnosis
547involving tracking of position of the device or parts of the device
G01B 3/1069
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
3Instruments as specified in the subgroups and characterised by the use of mechanical measuring means
10Measuring tapes
1061Means for displaying or assisting reading of length measurement
1069Electronic or mechanical display arrangements
G01D 5/34707
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical 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
26characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light
32with attenuation or whole or partial obturation of beams of light
34the beams of light being detected by photocells
347using displacement encoding scales
34707Scales; Discs, e.g. fixation, fabrication, compensation
Applicants
  • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH [DE]/[DE] (DE)
  • KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL]/[NL] (AE, AG, AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, BZ, CA, CF, CG, CH, CI, CM, CN, CO, CR, CU, CY, CZ, DK, DM, DZ, EC, EE, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GW, HR, HU, ID, IE, IL, IN, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MC, MD, MG, MK, ML, MN, MR, MW, MX, MZ, NE, NI, NL, NO, NZ, OM, PH, PL, PT, RO, RU, SC, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, YU, ZA, ZM, ZW)
  • GRÜNAU, Dieter [DE]/[DE] (UsOnly)
Inventors
  • GRÜNAU, Dieter
Agents
  • VOLMER, Georg
Priority Data
102 30 972.810.07.2002DE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL ENCODER
(FR) CODEUR OPTIQUE
Abstract
(EN)
The invention relates to an apparatus, notably an X-ray apparatus, which comprises two components which are displaceable relative to one another. A position visualization unit is arranged on one component of the apparatus and the other component of the apparatus is provided with an image acquisition unit whose acquisition zone contains a segment of the position visualization unit which changes due to the motion. The image acquisition unit acquires images of the segment present in the acquisition zone and applies such images to an evaluation unit which extracts position information from the images.
(FR)
L'invention porte sur un appareil, à savoir un appareil de radiographie, qui comprend deux composants qui peuvent se déplacer l'un par rapport à l'autre. Une unité de visualisation de position est disposée sur un composant de l'appareil et l'autre composant de l'appareil est doté d'une unité d'acquisition d'images dont la zone d'acquisition contient un segment de l'unité de visualisation qui change en raison du mouvement. L'unité d'acquisition d'image acquiert des images du segment présent dans la zone d'acquisition et applique ces images sur une unité qui extrait des informations de position à partir des images.
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