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1. (WO2019030619) LIGHTGUIDE HAVING RECESS OF VARYING DEPTH
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/030619 International Application No.: PCT/IB2018/055787
Publication Date: 14.02.2019 International Filing Date: 01.08.2018
IPC:
F21V 8/00 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21
LIGHTING
V
FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
8
Use of light guides, e.g. fibre optic devices, in lighting devices or systems
Applicants:
3M INNOVATIVE PROPERTIES COMPANY [US/US]; 3M Center Post Office Box 33427 Saint Paul, Minnesota 55133-3427, US
Inventors:
LIU, Tao; US
LU, Yongshang; US
MERCORD, David C.; US
OSTLIE, Brian W.; US
Agent:
MOSHREFZADEH, Robert S.,; US
RHODES, Kevin H.; US
BLANK, Colene H.,; US
HARTS, Dean M. ,; US
LEVINSON, Eric D.,; US
MAKI, Eloise J.,; US
NOWAK, Sandra K.,; US
OLSON, Peter L.,; US
RINGSRED, Ted K.,; US
Priority Data:
62/542,45308.08.2017US
Title (EN) LIGHTGUIDE HAVING RECESS OF VARYING DEPTH
(FR) GUIDE DE LUMIÈRE MUNI D'UN ÉVIDEMENT DE PROFONDEUR VARIABLE
Abstract:
(EN) An optical system comprises a lightguide having an elongated recess formed therein. The recess divides the lightguide into a first lightguide section a second larger lightguide section. Light extractors are disposed in the second, but not the first, lightguide section for extracting light that would otherwise propagate within and along the second lightguide section via total internal reflection (TIR). The depth of the recess varies along its length. The inclusion of a recess having a depth that varies along its length provides design flexibility in the number and location of light source(s) used by the optical system.
(FR) Système optique comprenant un guide de lumière ayant un évidement allongé formé à l'intérieur de celui-ci. L'évidement divise le guide de lumière en une première section de guide de lumière et en une seconde section de guide de lumière plus grande. Des extracteurs de lumière sont disposés dans la seconde section de guide de lumière, mais pas dans la première section de guide de lumière, pour extraire la lumière qui se propagerait autrement à l'intérieur et le long de la seconde section de guide de lumière par réflexion interne totale (TIR). La profondeur de l'évidement varie sur sa longueur. L'inclusion d'un évidement ayant une profondeur qui varie le long de sa longueur fournit une flexibilité de conception en ce qui concerne le nombre et l'emplacement de source(s) de lumière utilisées par le système optique.
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Designated States: 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, JO, 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)