| CPC G02F 1/133607 (2021.01) [G02B 5/045 (2013.01); G02F 1/133634 (2013.01)] | 17 Claims |
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1. A light conversion structure, comprising:
a transparent substrate, wherein the transparent substrate comprises a first surface and a second surface arranged oppositely;
a plurality of first prism structures, wherein the first prism structures are arranged in an array on the first surface forming rows along a first direction and columns along a second direction, each of the first prism structures includes a first light-entering surface and a second light-entering surface that are arranged adjacent or opposite to each other, the first light-entering surface is used to receive a first incident light entering in the first direction, and the second light-entering surface is used to receive a second incident light entering in the second direction;
a plurality of second prism structures, wherein the second prism structures are arranged in an array on the second surface in accordance with the rows and columns, the plurality of second prism structures are arranged in a one-to-one correspondence with the plurality of first prism structures, each of the second prism structures includes a first light-exiting surface and a second light-exiting surface that are arranged adjacent or opposite to each other;
wherein the first incident light enters the first prism structure from the first light-entering surface, passes through the transparent substrate and the second prism structure corresponding to the first prism structure, and exits from the first light-exiting surface at a first predetermined angle;
the second incident light enters the first prism structure from the second light-entering surface, passes through the transparent substrate and the second prism structure corresponding to the first prism structure, and exits from the second light-exiting surface at a second predetermined angle;
a difference value between the first predetermined angle and the second predetermined angle is less than a predetermined value;
wherein the first prism structures in each row or each column are symmetrically arranged with respect to a center of the row or a center of the column;
the second prism structures in each row or each column are symmetrically arranged with respect to a center of the row or a center of the column;
wherein the first incident light and second incident light in different directions, after being deflected by the light conversion structure, both exit in directions converging toward a center of the transparent substrate.
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