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1. (WO2013156905) A LIGHTING DEVICE WITH A LIGHT GUIDE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2013/156905 International Application No.: PCT/IB2013/052872
Publication Date: 24.10.2013 International Filing Date: 11.04.2013
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:
KONINKLIJKE PHILIPS N.V. [NL/NL]; High Tech Campus 5 NL-5656 AE Eindhoven, NL
Inventors:
BOONEKAMP, Erik Paul; NL
THIJSSEN, Johannes Maria; NL
Agent:
VAN EEUWIJK, Alexander Henricus Walterus; High Tech Campus Building 5 NL-5656 AE Eindhoven, NL
Priority Data:
61/635,44519.04.2012US
Title (EN) A LIGHTING DEVICE WITH A LIGHT GUIDE
(FR) DISPOSITIF D'ÉCLAIRAGE DOTÉ D'UN GUIDE DE LUMIÈRE
Abstract:
(EN) A lighting device (1) comprises a light guide (2) comprising a front surface (3), a back surface (4) opposite said front surface and an edge surface (7), at least one point light source (8) arranged to emit light into said light guide through said edge surface, and a reflective element (6) adjacent to said back surface of said light guide, such that light (12) travelling within said light guide is reflected by said back surface and/or said reflective element and is emitted through said front surface. The lighting device (1) further comprises a pattern of light scattering structures (5a, 5b, 5c) in optical contact with said front surface (3), which allows a range of different beam shapes to be created. The smallest dimension or size, d, of the light scattering structures is important for obtaining the desired effect. The lighting device provides improved illumination of large building areas.
(FR) Dispositif d'éclairage (1) comprenant un guide de lumière (2) comprenant une surface avant (3), une surface arrière (4) opposée à ladite surface avant et une surface de bord (7), au moins une source de lumière ponctuelle (8) conçue pour émettre de la lumière dans ledit guide de lumière par le biais de ladite surface de bord, et un élément réfléchissant (6) adjacent à ladite surface arrière dudit guide de lumière, de sorte que la lumière (12) parcourant ledit guide de lumière soit réfléchie par ladite lumière arrière et/ou ledit élément réfléchissant et soit émise par l'intermédiaire de ladite surface avant. Le dispositif d'éclairage (1) comprend en outre un modèle de structures de dispersion de lumière (5a, 5b, 5c) en contact optique avec ladite surface avant (3), ce qui permet la création d'une plage de différentes formes de faisceau. La dimension ou taille la plus petite, d, des structures de dispersion de lumière est importante pour obtenir l'effet souhaité. Le dispositif d'éclairage permet un éclairage amélioré de grandes surfaces de bâtiment.
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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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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, 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, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)