Patent SG-11201809393P-A (SG)
Title: Optical rotation angle measuring system
Inventor: GUGGENMOS MARKUS
IPC: G01D5/38
Filed: 2017-05-03
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 09 November 2017 (09.11.2017) WIP0 I PCT omit VIII Hot 0 mu OH VIII 1011 oimIE (10) International Publication Number WO 2017/191168 Al (51) International Patent Classification: G01D 5/347(2006.01) GO1B 11/26 (2006.01) GO1D 5/38 (2006.01) (21) International Application Number: PCT/EP2017/060488 (22) International Filing Date: 03 May 2017 (03.05.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 16168184.6 03 May 2016 (03.05.2016) EP (71) Applicant: ARGES GMBH [NL/DE]; Werk 4, 92442 Wackersdorf (DE). (72) Inventors: GUGGENMOS, Markus; Efeustrasse 22, 92421 Schwandorf (DE). HARTMANN, Martin; Tal- weg 9a, 90559 Burgthann (DE). KIESBAUER, Bernhard; Lohma 45, 92714 Pleystein (DE). VELZEL, Christiaan H.F.; Strausslaan 34, 5751 EG Deurne (NL). PEKELDER, Sven; Tweelingenlaan 22, 5694 VG Breugel (NL). (74) Agent: LC PATENTS; Kempische Steenweg 542A, 3500 Hassell (BE). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). = (54) Title: OPTICAL ROTATION ANGLE MEASURING SYSTEM Fig. (57) : The present invention is directed to an optical system for measuring the rotation angle of rotatable object having a rotation shaft (2), which system comprises a reflective diffraction element (6) mounted on said shaft and a module that includes a radiation source (8) emitting a monochromatic beam (bo) towards this element and a radiation-sensitive detection structure (14, 16), the diffraction element is configured to project diffraction order images (18) of its pattern onto associated sections (50(1) — 54(2)) of an annular grating structure forming part of the detection structure and the surface size of the diffraction element is smaller than 20% of the surface size of the annular grating structure. [Continued on next page] WO 2017/191168 Al D IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) of inventorship (Rule 4.17(iv)) Published: — with international search report (Art. 21(3))