Stereoscopic eyewear
View Patent ↗Described are stereoscopic eyewear, methods and systems for manufacturing the same. The stereoscopic eyewear includes right- and left-eye filters for analyzing stereoscopically-encoded polarized light. The filters are made using a roll-type polarizer having an absorption axis. A polymer alignment layer is deposited on a portion of the roll-type polarizer. A liquid crystal polymer (LCP) layer is deposited on the polymer alignment layer. The polymer alignment layer and LCP layer provides at least one retarder having an optic axis at a predetermined angle to the absorption axis of the roll-type polarizer. Described embodiments include a polymer alignment layer that may include at least one of a linearly photopolymerizable polymer (LPP), a brushed or rolled polyimide.
1. A method of manufacturing stereoscopic eyewear for viewing stereoscopic pictures, the method comprising:
providing a roll-type polarizer having an absorption axis;
depositing a polymer alignment layer on a portion of the roll-type polarizer; and
depositing a liquid crystal polymer (LCP) layer on the polymer alignment layer, wherein the polymer alignment layer provides substantial alignment to molecules of the LCP layer to provide a retarder with an optic axis at substantially a 45 degree angle to the absorption axis of the roll-type polarizer.
2. The method of manufacturing stereoscopic eyewear for viewing stereoscopic pictures according to claim 1 , wherein the polymer alignment layer comprises a linearly photopolymerizable polymer (LPP).
3. The method of manufacturing stereoscopic eyewear for viewing stereoscopic pictures according to claim 1 , wherein the polymer alignment layer comprises a polyimide, wherein the alignment is provided by one of: brushing the polyimide at the substantial 45 degree angle to the absorption axis, or applying a roller at the substantial 45 degree angle to the absorption axis.
4. The method of manufacturing stereoscopic eyewear for viewing stereoscopic pictures according to claim 1 , wherein the absorption axis is perpendicular to the axis of a roll carrying the roll-type polarizer.
5. The method of manufacturing stereoscopic eyewear for viewing stereoscopic pictures according to claim 1 , wherein the LCP layer and polymer alignment layer in combination with the sheet polarizer provide an analyzer for analyzing the circularly polarized light.
6. The method of manufacturing stereoscopic eyewear for viewing stereoscopic pictures according to claim 1 , wherein the deposited polymer alignment layer is in the range of 0.01 to 0.1 microns thick.
7. The method of manufacturing stereoscopic eyewear for viewing stereoscopic pictures according to claim 1 , wherein the LCP layer is in the range of 0.1 to 2.0 microns thick.
8. The method of manufacturing stereoscopic eyewear for viewing stereoscopic pictures according to claim 1 , wherein the LCP layer provides a retarder with a retardance of a quarter wave.
9. The method of manufacturing stereoscopic eyewear for viewing stereoscopic pictures according to claim 1 , wherein the LCP layer provides a retarder with a retardance in the range of 100 nm to 200 nm.