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US 12,002,789 B2Granted
Display apparatus
AssigneeOptovate Limited
InventorsJonathan Harrold, Graham J. Woodgate
Life of this patent
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Abstract
A display apparatus comprises an array of micro-LEDs and an aligned array of catadioptric optical elements wherein the array of micro optics is further aligned to an array of apertures of a low reflection screen. Advantageously such an arrangement provides a display with large images of configurable size, low cost and high brightness that can achieve high contrast in high illuminance from ambient lighting while also achieving high luminous efficiency.
Claims40
A display apparatus, comprising:
- at least one image pixel array relay structure comprising:
- a plurality of micro-LEDs arranged to output light, the plurality of micro-LEDs being arranged in a micro-LED array;
- and a plurality of catadioptric optical elements arranged in a catadioptric optical element array, wherein each of the catadioptric optical elements of the plurality of catadioptric optical elements is aligned in correspondence with a respective one or more of the micro-LEDs of the plurality of micro-LEDs, each of the micro-LEDs of the plurality of micro-LEDs being aligned with only a respective one of the catadioptric optical elements of the plurality of catadioptric optical elements;
- and a low reflection screen comprising a light absorbing structure arranged on a side of a transparent support substrate wherein the light absorbing structure comprises a plurality of light transmitting apertures arranged in an aperture array, the transparent support substrate being arranged between the image pixel array relay structure and the light absorbing structure;
- wherein the at least one image pixel array relay structure and the low reflection screen are aligned such that the light from each of the micro-LEDs and its respective aligned catadioptric optical element is converged towards and relayed to at least one of the light transmitting apertures by the at least one image pixel array relay structure.
2 more elements
Dependencies are inferred from the claim text.