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1. (WO2019025325) EXTREMELY WIDE DISTRIBUTION LIGHT-EMITTING DIODE (LED) LENS FOR THIN DIRECT-LIT BACKLIGHT
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Pub. No.: WO/2019/025325 International Application No.: PCT/EP2018/070485
Publication Date: 07.02.2019 International Filing Date: 27.07.2018
IPC:
H01L 33/58 (2010.01) ,H01L 33/60 (2010.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
33
Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
48
characterised by the semiconductor body packages
58
Optical field-shaping elements
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
33
Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
48
characterised by the semiconductor body packages
58
Optical field-shaping elements
60
Reflective elements
Applicants:
LUMILEDS HOLDING B.V. [NL/NL]; The Base, Tower B5 unit 107, Evert van de Beekstraat 1, 1118 CL Schiphol, NL
Inventors:
FENG, Chunxia; DE
Agent:
TER HEEGDE, Paul; DE
Priority Data:
15/960,98524.04.2018US
17190880.913.09.2017EP
PCT/CN2017/09592304.08.2017CN
Title (EN) EXTREMELY WIDE DISTRIBUTION LIGHT-EMITTING DIODE (LED) LENS FOR THIN DIRECT-LIT BACKLIGHT
(FR) LENTILLE À DIODE ÉLECTROLUMINESCENTE (DEL) À DISTRIBUTION EXTRÊMEMENT LARGE POUR RÉTROÉCLAIRAGE À ÉCLAIRAGE DIRECT MINCE
Abstract:
(EN) Disclosed lens designs enable uniform light distribution without hot spot, achieving wider transfer functions of light compared with traditional lenses, with a benefit of reducing the number of light sources needed and overall cost for direct-lit backlight device. A disclosed lens includes a beam shaping element on the top thereof and a backlight device incorporating the lens and the beam shaping element to eliminate a light hot spot produced by the backlight device and obtain a uniform light distribution at the illumination field. The disclosed lens is especially useful when extremely wider transfer function or extremely thin backlight is needed.
(FR) Les conceptions de lentilles de l'invention permettent une distribution de lumière uniforme sans point chaud, ce qui permet d'obtenir des fonctions de transfert plus larges de la lumière par rapport aux lentilles classiques, avec un avantage de réduire le nombre de sources de lumière nécessaires et le coût global pour le dispositif de rétroéclairage à éclairage direct. Une lentille de l'invention comprend un élément de mise en forme de faisceau sur sa partie supérieure et un dispositif de rétroéclairage incorporant la lentille et l'élément de mise en forme de faisceau pour éliminer un point chaud de lumière produit par le dispositif de rétroéclairage et obtenir une distribution de lumière uniforme au niveau du champ d'éclairage. La lentille de l'invention est particulièrement utile lorsqu'une fonction de transfert extrêmement large ou un rétroéclairage extrêmement mince est nécessaire.
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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 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, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)