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Pub. No.:    WO/2000/058932    International Application No.:    PCT/GB2000/001248
Publication Date: 05.10.2000 International Filing Date: 31.03.2000
Chapter 2 Demand Filed:    16.10.2000    
G02B 3/00 (2006.01), G02B 27/22 (2006.01), G09G 3/00 (2006.01), H04N 5/74 (2006.01)
Applicants: CAMBRIDGE 3D DISPLAY LTD. [GB/GB]; 26 Faroe Road, London W14 0EP (GB) (For All Designated States Except US).
TRAVIS, Adrian, Robert, Leigh [GB/GB]; (GB) (For US Only).
MARSTON, Nathan, Stuart [GB/GB]; (GB) (For US Only)
Inventors: TRAVIS, Adrian, Robert, Leigh; (GB).
MARSTON, Nathan, Stuart; (GB)
Agent: GIBBS, Christopher, Stephen; Haseltine Lake & Co., Imperial House, 15-19 Kingsway, London, WC2B 6UD (GB)
Priority Data:
9907277.9 31.03.1999 GB
Abstract: front page image
(EN)A wide-field-of-view projection display comprises a circularly symmetric lens (1) and an array of light emitters (2), positioned along the focal circumference of the circularly symmetric lens so that light from each of the light emitters is substantially collimated by the lens in a different direction. A ray-diverting means, such as a slab waveguide (10) or a reflector, ejects the collimated light out of the plane of the lens to the viewer. The planar circularly symmetric lens has no aberration, allowing adjacent views to be seamlessly joined because they can all be diffused by the same angular amount.
(FR)L'invention concerne un affichage par projection à large champ, qui comprend une lentille circulairement symétrique (1) et un champ de sources lumineuses (2) placées le long de la circonférence focale de ladite lentille de façon que la lumière de chaque source lumineuse soit sensiblement collimatée par la lentille dans une direction différente. Un dispositif de déviation des rayons, tel qu'un guide d'ondes bidimensionnel (10) ou un réflecteur, renvoie la lumière collimatée hors du plan de la lentille à destination du spectateur. La lentille à réseau plan circulairement symétrique ne présente aucune aberration, permettant à des vues adjacentes d'être assemblées sans coupure car elles peuvent toutes être diffusées du même angle.
Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)