Methods for manipulating light extraction from a light guide
First Claim
1. A method of defining an array of extractor elements configured to extract light from a light guide, thereby producing a desired spatial light pattern ET quantifying optical output at a plurality of locations across the light guide, the method comprising:
- (a) calculating a first spatial light pattern produced by a first array of extractor elements, the first spatial light pattern quantifying optical output at the plurality of locations across the light guide;
(b) determining a ratio R of the optical output of the desired spatial light pattern to an optical output of the first spatial light pattern;
(c) determining a modified ratio R′
, wherein R′
=Rα
and |α
|<
1; and
(d) determining a characteristic of a second array of extractor elements by scaling a characteristic of the first array of extractor elements by the modified ratio R′
.
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Accused Products
Abstract
In one embodiment, a method of defining an array of extractor elements configured to extract light from a light guide, and thereby produce a desired spatial light pattern ET quantifying optical output at a plurality of locations across the light guide is provided. The method comprises calculating a first spatial light pattern produced by a first array of extractor elements. The first spatial light pattern quantifies optical output at the plurality of locations across the light guide. The method further comprises determining a ratio R of the optical output of the desired spatial light pattern to an optical output of the first spatial light pattern. The method further comprises determining a modified ratio R′, wherein R′=Rα and |α|<1. The method further comprises determining a characteristic of a second array of extractor elements by scaling a characteristic of the first array of extractor elements by the modified ratio R′.
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Citations
27 Claims
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1. A method of defining an array of extractor elements configured to extract light from a light guide, thereby producing a desired spatial light pattern ET quantifying optical output at a plurality of locations across the light guide, the method comprising:
-
(a) calculating a first spatial light pattern produced by a first array of extractor elements, the first spatial light pattern quantifying optical output at the plurality of locations across the light guide; (b) determining a ratio R of the optical output of the desired spatial light pattern to an optical output of the first spatial light pattern; (c) determining a modified ratio R′
, wherein R′
=Rα
and |α
|<
1; and(d) determining a characteristic of a second array of extractor elements by scaling a characteristic of the first array of extractor elements by the modified ratio R′
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification