Optical illumination module for a display system
AssigneeContinental Automotive Technologies GmbH
InventorsTing Xiao, Christian Junge
Life of this patent
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Abstract
An optical illumination module for a motor vehicle display system including a light generator for generating light beams, and a polarizer film to at least partially polarize the light beams generated by the light generator and a reflective sheet positioned therebetween. The reflective sheet comprises a plurality of punch-holes, each of the punch-hole is configured to align to each of the light cell of the light generator. The reflective sheet is operable to receive the at least partially polarized light beams reflected from the polarizer film and re-direct the polarized light beams towards the polarizer film.
Claims15
An optical illumination module for a display system comprising:
- a light generator operable to generate light beams, the light generator comprising a plurality of light cells;
- a polarizer film operable to at least partially polarize the generated light beams;
- a reflective sheet having a convex spherical surface or a convex aspherical surface comprising a plurality of punch-holes configured to allow the generated light beams to emit therethrough;
- and
- a polarization-rotating element operable to re-direct the generated light beams;
- wherein the reflective sheet is operable to receive the polarized light beams and the re-directed light beams and re-direct the polarized light beams, the re-directed light beams, and the light beams emitting through the punch-holes towards the polarizer film.
A method of providing illumination for a display system, the method comprising:
- generating light beams from a light generator, the light generator comprising a plurality of light cells;
- at least partially polarizing light beams generated from the light generator by way of a polarizer film;
- changing a direction of the light beams generated by the light generator by way of a polarization-rotating element;
- receiving, by way of a reflective sheet:
- the at least partially polarized light beams reflected from the polarizer film and the light beams re-directed by the polarization-rotating element;
- and a reflective sheet comprising a convex spherical surface or a convex aspherical surface having a plurality of punch-holes configured to allow the generated light beams to emit therethrough
- re-directing, the at least partially polarized light beams, the light beams re-directed by the polarization-rotating element, and light beams emitting through the light cells towards the polarizer film.
Dependencies are inferred from the claim text.