Patent application number | Description | Published |
20080218698 | PROJECTION SYSTEM INCLUDING INTRINSIC POLARIZER - A projection system including an intrinsic polarizer is disclosed. The projection system includes a light source producing illumination light, an imager disposed to receive the illumination light, and a projection lens disposed to receive the illumination light from the imager. The imager includes an intrinsic polarizer. An intrinsic polarizer stack including a U.V. curable adhesive is also disclosed. | 09-11-2008 |
20090134535 | Method of manufacturing an intrinsic polarizer - An improved method of forming an intrinsic polarizer, referred to as a K-type polarizer, includes stretching a polymeric film a first stretching step. The polymeric film comprises a hydroxylated linear polymer which is converted after the first stretching step to form dichroic, copolymer polyvinylene blocks aligned in the polymeric film. The polymeric film is stretched in a second stretching step while converting the hydroxylated linear polymer. This method produces an improved K-type polarizer with excellent polarizing and color characteristics. For example, the dichroic ratio is higher than 100, the color shift for light passed through the polarizer in a crossed configuration is low, and the absorption of light in the blue region of the visible spectrum is more than one half of the absorption for light in the middle of the visible spectrum. | 05-28-2009 |
20090135482 | Intrinsic polarizer - An intrinsic polarizer, including a sheet of PVA-type matrix that includes vinylene polymer blocks, the sheet defining a pass polarization axis and a block polarization axis perpendicular to the pass polarization axis, light having an electrical vector parallel to the pass polarization axis being substantially transmitted through the sheet and light having an electrical vector parallel to the block polarization axis being substantially absorbed by the vinylene blocks, the sheet exhibiting a dichroic ratio of more than 100. | 05-28-2009 |
20140071684 | REDUCTION OF INTENSITY RINGING IN FLUORESCENT DISPLAYS - Embodiments of fluorescent display screens having an intermediate layer between a light-emitting fluorescent layer and an excitation filter layer are disclosed. The intermediate layer includes (1) a low-index layer disposed between the light-emitting fluorescent layer and the excitation filter layer and (2) an index bridging layer disposed between the low-index layer and the excitation filter layer. The insertion of the low-index layer and the index bridging layer according to the above configuration reduces the sensitivity of the excitation coupling to the non-uniformities in the excitation filter layer and variability in the output frequency of the excitation source, leading to improved uniformity of display intensity without significant compromise in the excitation coupling efficiency. A index bridging region made of a hard coat also provides abrasion resistance and provides structure rigidity to the adjacent excitation filter layer. | 03-13-2014 |