Assignee
LIGHTMASTER SYSTEMS INC
US·23 granted patents·2 pending applications·169 citations·filing 2002–2007
Top patents by PatentIndex Score
25 records- 0193US7175281B1Method and apparatus to increase the contrast ratio of the image produced by a LCoS based light engineLIGHTMASTER SYSTEMS INC·Filed 2004·Granted Feb 13, 2007·47 cites·30 claims
- 0291US7641346B2Method and apparatus to increase the contrast ratio of the image produced by a LCoS based light engineLIGHTMASTER SYSTEMS INC·Filed 2007·Granted Jan 5, 2010·9 cites·13 claims
- 0390US7422329B2Liquid crystal on silicon (LCOS) kernel with 3D projection capabilityLIGHTMASTER SYSTEMS INC·Filed 2005·Granted Sep 9, 2008·14 cites·12 claims
- 0484US7347558B23D kernel and prism assembly designLIGHTMASTER SYSTEMS INC·Filed 2005·Granted Mar 25, 2008·8 cites·13 claims
- 0582US7400452B2Method and apparatus for internal frames to improve performance and manufacturability of optical devices including liquid crystal on silicon (LCOS) based kernelsLIGHTMASTER SYSTEMS INC·Filed 2005·Granted Jul 15, 2008·11 cites·18 claims
- 0680US6982829B1Prism assembly with cholesteric reflectorsLIGHTMASTER SYSTEMS INC·Filed 2003·Granted Jan 3, 2006·21 cites·8 claims
- 0778US7327408B1Illuminator that generates linearly polarized light for microdisplay based light engineLIGHTMASTER SYSTEMS INC·Filed 2004·Granted Feb 5, 2008·12 cites·27 claims
- 0871US7042610B1Method and apparatus for improved waveplates and suppression of stray light in LCoS kernel applicationsLIGHTMASTER SYSTEMS INC·Filed 2004·Granted May 9, 2006·11 cites·43 claims
- 0970US6909556B2Design of prism assemblies and kernel configurations for use in projection systemsLIGHTMASTER SYSTEMS INC·Filed 2003·Granted Jun 21, 2005·13 cites·56 claims
- 1065US7560710B2Method and apparatus for increasing illuminator brightness in a liquid crystal on silicon (LCoS) based video projection systemLIGHTMASTER SYSTEMS INC·Filed 2005·Granted Jul 14, 2009·2 cites·21 claims
- 1164US7556382B1Illuminator that outputs linearly polarized light and that is suitable for use in microdisplay based light engine applicationsLIGHTMASTER SYSTEMS INC·Filed 2004·Granted Jul 7, 2009·5 cites·26 claims
- 1259US7390094B2Method and apparatus to achieve a neutral dark state in image projection systemsLIGHTMASTER SYSTEMS INC·Filed 2005·Granted Jun 24, 2008·2 cites·28 claims
- 1357US7349048B1Method and apparatus for adjusting light intensityLIGHTMASTER SYSTEMS INC·Filed 2004·Granted Mar 25, 2008·2 cites·13 claims
- 1455US6934066B2Method and apparatus for use and construction of compensated higher order waveplatesLIGHTMASTER SYSTEMS INC·Filed 2003·Granted Aug 23, 2005·4 cites·82 claims
- 1555US6796663B2Method and apparatus for mounting liquid crystal on silicon (LCoS) and other sensitive devicesLIGHTMASTER SYSTEMS INC·Filed 2002·Granted Sep 28, 2004·2 cites·81 claims
- 1652US7012755B1Use of a lens array to increase the contrast ratio produced by a LCoS microdisplayLIGHTMASTER SYSTEMS INC·Filed 2004·Granted Mar 14, 2006·3 cites·42 claims
- 1750US7352513B2Prism assemblies and kernel configurations for use in projection systemsLIGHTMASTER SYSTEMS INC·Filed 2005·Granted Apr 1, 2008·1 cites·14 claims
- 1846US7570240B2Method and apparatus to minimize lamp flicker and increase contrast ratio in projection devicesLIGHTMASTER SYSTEMS INC·Filed 2005·Granted Aug 4, 2009·0 cites·16 claims
- 1946US6999237B2Method and apparatus for configuration and assembly of a video projection light management systemLIGHTMASTER SYSTEMS INC·Filed 2002·Granted Feb 14, 2006·1 cites·50 claims
- 2046US6873480B2Method and apparatus for packaging optical elementsLIGHTMASTER SYSTEMS INC·Filed 2002·Granted Mar 29, 2005·1 cites·64 claims
- 2145US2007085979A1Method and apparatus to manage light and reduce blur in microdisplay based light enginesLIGHTMASTER SYSTEMS INC·Filed 2005·Application pending·0 cites
- 2244US7791675B2Method and apparatus for variable retardation and adjusting light channel pathlengthsLIGHTMASTER SYSTEMS INC·Filed 2005·Granted Sep 7, 2010·0 cites·22 claims
- 2344US2006274276A1Method and apparatus for precisely compensating skew rays and residual retardationLIGHTMASTER SYSTEMS INC·Filed 2005·Application pending·0 cites
- 2443US7006297B2Pathlength matched beam splitter and method and apparatus for assemblyLIGHTMASTER SYSTEMS INC·Filed 2004·Granted Feb 28, 2006·0 cites·47 claims
- 2541US6809874B1Pathlength matched beam splitter and method and apparatus for assemblyLIGHTMASTER SYSTEMS INC·Filed 2002·Granted Oct 26, 2004·0 cites·27 claims
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