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1. (WO2018185475) ILLUMINATION APPARATUS
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/185475 International Application No.: PCT/GB2018/050893
Publication Date: 11.10.2018 International Filing Date: 29.03.2018
IPC:
G02B 19/00 (2006.01) ,G02F 1/1335 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
19
Condensers
G PHYSICS
02
OPTICS
F
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1
Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01
for the control of the intensity, phase, polarisation or colour
13
based on liquid crystals, e.g. single liquid crystal display cells
133
Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333
Constructional arrangements
1335
Structural association of optical devices, e.g. polarisers, reflectors, with the cell
Applicants: OPTOVATE LIMITED[GB/GB]; 77 Heyford Park, Upper Heyford Oxfordshire OX25 5HD, GB
Inventors: WOODGATE, Graham; GB
HARROLD, Jonathan; GB
Agent: OPENSHAW & CO; 8 Castle Street Farnham Surrey GU9 7HR, GB
Priority Data:
1705364.603.04.2017GB
Title (EN) ILLUMINATION APPARATUS
(FR) APPAREIL D'ÉCLAIRAGE
Abstract:
(EN) A switchable directional illumination apparatus comprises first (3) and second (103) arrays of LEDs, some of which are micro-LEDs; an aligned catadioptric micro-optic (38) array and an aligned light guide (107) array. In a first mode a narrow angular output is provided by a first micro-LED array and catadioptric micro-optics. In a second mode a wider angular output is provided by the second LED array and light guides. A thin and efficient illumination apparatus may be used for switching illumination in environmental lighting, display backlighting or direct display.
(FR) La présente invention concerne un appareil d'éclairage directionnel commutable comprenant des premier (3) et second (103) ensembles de DEL, dont certaines sont des micro-DEL; un ensemble micro-optique catadioptrique (38) aligné et un ensemble de guides de lumière (107) alignés. Dans un premier mode, une sortie angulaire étroite est fournie par un premier ensemble de micro-DEL et des micro-optiques catadioptriques. Dans un second mode, une sortie angulaire plus large est fournie par le second ensemble de DEL et les guides de lumière. Un appareil d'éclairage mince et efficace peut être utilisé pour commuter l'éclairage dans un éclairage environnemental, un rétroéclairage d'affichage ou un affichage direct.
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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)