Curved lenses configured to decode three-dimensional content
Curved lenses configured to decode three dimensional content and method of fabricating the same. The lenses comprise a polyvinylalcohol polarizer film or similar type of material laminated with triacetate or similar type material on one or both sides, wherein the polarizer film has a polarizing efficiency equal to or exceeding 99% and a transmittance percentage equal to or exceeding 35% and a retarder film (e.g., norbornene copolymer resin) laminated on a front surface of the polyvinylalcohol polarizer film laminated with triacetate and aligned to produce a desired circular polarization responsive to specified retardation wavelengths. Thermoforming and press polishing techniques may be used to fabricate/curve the blanks into lenses. The lenses (optical elements) may be used in an injection molding process to add thickness.
1. A lens configured to decode three dimensional content comprising:
a curved blank including a polymeric material structure comprising:
a polarizing layer laminated with a first polymeric material layer on a first side of the polarizing layer and laminated with a second polymeric material layer on a second side of the polarizing layer, wherein the first side and the second side of the polarizing layer are different sides;
a retarder layer laminated to the second polymeric material layer, said retarder layer aligned to decode a desired circular polarization.
2. The lens of claim 1 wherein said polarizing layer, said first polymeric material layer, said second polymeric material layer, and said retarder layer have a combined thickness of 250-1500 microns.
3. A lens configured to decode three dimensional content comprising:
a curved blank comprising a polymeric material structure including a polarizing layer laminated on a first side with a polymeric material layer
and a retarder layer laminated to a second side of the polarizing layer;
said retarder layer aligned to decode a desired circular polarization.
4. The lens of claim 3 wherein said polarizing layer, polymeric layer, and retarder layer have a combined thickness in a range of about 250-750 microns.
5. The lens of claim 4 wherein said polarizing layer, polymeric layer, retarder layer, and one or more thickness layers have a combined thickness in a range of about 1000 to 2200 microns.
6. A method of fabricating a curved lens configured to decode three dimensional content comprising:
obtaining a sheet of material comprising a polarizing layer laminated on a first side with a first polymeric material layer and laminated on a second side with a second polymeric material layer, and a retarder layer laminated directly on the second polymeric material layer;
cutting blanks to maintain a specified alignment of a polarizing axis associated with said sheet; and
curving said blanks into lenses by applying high pressure with controlled heating from both sides of a polished mold.
7. The method of claim 6 wherein said polarizing layer, polymeric layer, and retarder layer have a combined thickness of 400-1400 microns.
8. The method of claim 6 wherein said polarizing layer, polymeric layer, and retarder layer have a combined thickness of 250-750 microns.
9. A method of fabricating a curved lens configured to decode three dimensional content, the method comprising:
obtaining a sheet of material comprising a polymeric material layer laminated on a first side with a polarizing layer and laminated on a second side with a retarder layer;
cutting blanks to maintain a specified alignment of a polarizing axis associated with said sheet; and
curving said blanks into lenses by applying high pressure with controlled heating from both sides of a polished mold.
10. The method of claim 9 further comprising adding one or more injection molding layers to increase a thickness of said lenses.
11. The method of claim 10 wherein said polarizing layer, polymeric layer, retarder layer, and the one or more injection molding layers have a combined thickness of 1000-2200 microns.