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Browse by Category: Main > Optical & Optics
Class Information
Number: 353/20
Name: Optics: image projectors > Polarizer or interference filter
Description: Subject matter including a polarizing element or interference filter in the optical path to modify the light in said path.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8690337 Device and method for displaying an image on a VUI screen and also a main projection screen Apr. 8, 2014
8690338 Reflective liquid crystal projector Apr. 8, 2014
8690344 Illumination system and projection device having a wheel plate including a wave band transforming area and a reflecting area Apr. 8, 2014
8678595 Projection type display apparatus with increased life of optical constituent components Mar. 25, 2014
8675146 Display structure having a transmittance-controllable layer Mar. 18, 2014
8668339 Light source device Mar. 11, 2014
8657449 Projection type display apparatus Feb. 25, 2014
8657448 Polarization converting element, polarization converting unit, and projection-type imaging device Feb. 25, 2014
8651665 Projector Feb. 18, 2014
8622549 Beam combiner for a scanned beam display Jan. 7, 2014
8602561 Three-dimensional projection device Dec. 10, 2013
8602562 Projector including a first and a second solid state light source Dec. 10, 2013
8602563 Projection image display apparatus and projection optical system Dec. 10, 2013
8593579 Projection display Nov. 26, 2013
8585206 Methods for operating scanning laser projectors to reduce speckle and image flicker Nov. 19, 2013
8567957 Active polarization switch for speckle reduction in laser projection sources Oct. 29, 2013
8567956 Projector Oct. 29, 2013
8567955 Methods and apparatus for concealing sensors and other components of electronic devices Oct. 29, 2013
8567954 3D display system with rear projection screens formed of water mist or spray Oct. 29, 2013
8562138 Projection display device Oct. 22, 2013
8540372 Waveplate compensation in projection polarization conversion systems Sep. 24, 2013
8534841 3D optical projection device Sep. 17, 2013
8534842 Projector Sep. 17, 2013
8537290 Projector apparatus Sep. 17, 2013
8529066 Projector that switches between polarization states Sep. 10, 2013
8529067 Projector apparatus and image synthesizing device for the same Sep. 10, 2013
8523362 Illumination system and projection apparatus Sep. 3, 2013
8523361 Projection device with brightness adjustment function and method thereof Sep. 3, 2013
8511827 Head-mounted projection display using reflective microdisplays Aug. 20, 2013
8506086 Device and method for the representation of body colours Aug. 13, 2013
8508675 Liquid crystal projector that includes an inorganic polarizer Aug. 13, 2013
8500286 Projection system Aug. 6, 2013
8500285 Projection type display apparatus Aug. 6, 2013
8491134 Light emitting apparatus, illuminator, and projector Jul. 23, 2013
8485667 Optical element and colored light combiner using same Jul. 16, 2013
8485665 Method and system for three-dimensional (3D) projection Jul. 16, 2013
8482549 Mutiple image projection apparatus Jul. 9, 2013
8480239 Optical device and projection device Jul. 9, 2013
8474980 Projection autostereoscopic display and stereo screen Jul. 2, 2013
8469517 Modular multi-color LED illumination system and method for polarizing and directing LED light signals into a coplanar orientation Jun. 25, 2013
8469515 Illuminator, image display apparatus, and polarization conversion/diffusion member Jun. 25, 2013
8469516 Illumination apparatus and projection display apparatus Jun. 25, 2013
8459798 Illumination apparatus and projector Jun. 11, 2013
8451390 Projection stereoscopic display May. 28, 2013
8444271 System and method for reducing visible speckle in a projection visual display system May. 21, 2013
8434873 Interactive projection device May. 7, 2013
8425043 Projector having a plurality of optical devices with a purality of optical modulators Apr. 23, 2013
8425041 Stereoscopic projection systems for employing spatial multiplexing at an intermediate image plane Apr. 23, 2013
8425042 Multi-segment optical retarder for creating 3D images Apr. 23, 2013
8414128 Optical projection device and projecting method thereof with movable wave plate Apr. 9, 2013

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