OPTICAL ELEMENT
First Claim
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1. An optical element comprising:
- a microlouver including transparent layers and light absorbing layers alternately disposed, the light absorbing layers constraining the extent of the direction in which the light passing through the transparent layers exits; and
a diffusion layer provided on the microlouver,wherein the angle of the field of view of the light passing thorough the optical element changes in such a way that the angle of the field of view is smaller in the peripheral area of the optical element than that in the central area of the optical element.
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Abstract
An optical element includes a microlouver including transparent layers and light absorbing layers alternately disposed, the light absorbing layers constraining the extent of the direction in which light passing through the transparent layers exits, and a diffusion layer provided on the microlouver. The angle of the field of view varies in such a way that the angle of the field of the view light passing thorough the peripheral area of the optical element is smaller than the angle of the field of view of light passing thorough the central area of the optical element.
52 Citations
26 Claims
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1. An optical element comprising:
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a microlouver including transparent layers and light absorbing layers alternately disposed, the light absorbing layers constraining the extent of the direction in which the light passing through the transparent layers exits; and a diffusion layer provided on the microlouver, wherein the angle of the field of view of the light passing thorough the optical element changes in such a way that the angle of the field of view is smaller in the peripheral area of the optical element than that in the central area of the optical element. - View Dependent Claims (2, 3, 7, 8, 11, 12, 15, 16, 17, 21, 22, 25)
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4. An optical element comprising:
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a microlouver including transparent layers and light absorbing layers alternately disposed, the light absorbing layers constraining the extent of the direction in which the light passing through the transparent layers exits; and a diffusion layer provided on the microlouver, wherein the diffusion power of the diffusion layer is lower in the peripheral area of the optical element than that in the central area of the optical element. - View Dependent Claims (5, 6, 9, 10, 13, 14, 18, 19, 20, 23, 24, 26)
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Specification