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Machine translation
1. (WO1997037266) POLARIZED ILLUMINATION SYSTEM FOR LCD PROJECTOR
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1997/037266    International Application No.:    PCT/US1997/004565
Publication Date: 09.10.1997 International Filing Date: 17.03.1997
Chapter 2 Demand Filed:    02.10.1997    
IPC:
G02B 27/28 (2006.01), G02F 1/1335 (2006.01), G02F 1/13357 (2006.01)
Applicants: MINNESOTA MINING AND MANUFACTURING COMPANY [US/US]; 3M Center, P.O. Box 33427, Saint Paul, MN 55133-3427 (US)
Inventors: VANDERWERF, Dennis, F.; (US)
Agent: CHERNIVEC, Gerald, F.; Minnesota Mining and Manufacturing Company, Office of Intellectual Property Counsel, P.O. Box 33427, Saint Paul, MN 55133-3427 (US).
HILLERINGMANN Jochen; Patent Attorney, Bahnhofsvorplatz 1(Deichmannhaus), D-50667 Cologne (DE)
Priority Data:
08/625,030 29.03.1996 US
Title (EN) POLARIZED ILLUMINATION SYSTEM FOR LCD PROJECTOR
(FR) SYSTEME D'ECLAIRAGE POLARISE POUR PROJECTEUR A CRISTAUX LIQUIDES
Abstract: front page image
(EN)An illumination system (10) is described that efficiently produces linear polarized light for use in LCD projection. A polarizing beam splitter (16) and half-wave retarder plate (20) produce two adjacent collimated beams of light having a common polarization direction. These adjacent beams are spatially integrated (22) into a single collimated polarized beam whose aspect ratio is subsequently converted to match that of the LCD format.
(FR)L'invention concerne un système d'éclairage (10) qui produit avec efficacité une lumière polarisée linéaire et qui peut être utilisé dans un projecteur à cristaux liquides. Un appareil polarisant de division de faisceau (16) et une lame demi-onde à retardement (20) produisent deux rayons de lumière collimatés adjacents ayant une direction de polarisation commune. Ces rayons adjacents sont spatialement intégrés (22) dans un rayon polarisé collimaté unique, dont le rapport d'allongement est subséquemment converti pour correspondre à celui du format cristaux liquides.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, HU, IL, 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, TJ, TM, TR, TT, UA, UG, UZ, VN, YU.
African Regional Intellectual Property Organization (GH, KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, 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, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)