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US 2003/0164914 A1Published application
Brightness enhancing reflective polarizer
Assignee3M Innovative Properties Company
InventorsMichael F. Weber, Olester Benson JR., Sanford Cobb JR., James M. Jonza, Andrew J. Ouderkirk, David L. Wortman, Carl A. Stover
Life of this patent
Estimating the term…
Abstract
A multiple layer reflective polarizer 12 is described. This element is placed between and optical cavity 24 and an LCD module 16 to form an optical display. The reflective polarizer reflects some light into the optical cavity 24 where it is randomized and may ultimately emerge with the correct polarization to be transmitted out of the display.
Claims12
An optical display comprising:
- a liquid crystal module;
- an optical cavity positioned proximate said liquid crystal module said optical cavity providing randomization of polarization orientation to light incident upon a surface within said optical cavity;
- a reflective polarizer located between said LCD module and said optical cavity, illuminated by said optical cavity for transmitting light having a first polarization orientation, and for reflecting light that does not have said first polarization orientation toward said optical cavity.
An optical display comprising:
- a front polarizer;
- a rear polarizer;
- a liquid crystal matrix located between said front polarizer and said rear polarizer;
- a reflective polarizer for transmitting light having a first polarization orientation;
- an optical cavity, for altering the polarization of light incident upon a surface within said optical cavity, said optical cavity located proximate said reflective polarizer to direct light through said reflective polarizer toward said liquid crystal matrix.
2 more elements
An optical display comprising:
- a front polarizer;
- a liquid crystal matrix located proximate said front polarizer;
- a reflective polarizer for transmitting light having a first polarization orientation;
- an optical cavity, for altering the polarization of light incident upon a surface within said optical cavity, said optical cavity located proximate said reflective polarizer to direct light through said reflective polarizer toward said liquid crystal matrix.
1 more element
Dependencies are inferred from the claim text.