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US 2019/0316759 A1Published application
Illumination apparatus
AssigneeOptovate Limited
InventorsJonathan HARROLD, Graham J. WOODGATE
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Abstract
An illumination apparatus comprises a plurality of LEDs aligned to an array of directional optical elements wherein the LEDs are substantially at the input aperture of respective optical elements. An electrode array is formed on the array of optical elements to provide at least a first electrical connection to the array of LED elements. Advantageously such an arrangement provides low cost and high efficiency from the directional LED array.
Claims19
A method for manufacturing an illumination apparatus, the method comprising:
- forming a monolithic light-emitting layer on a first substrate;
- transferring the monolithic light-emitting layer to a second substrate, the second substrate permitting transmission therethrough of light in an electromagnetic wavelength band;
- selectively removing a plurality of light-emitting elements from the monolithic light-emitting layer in a manner that preserves the relative spatial position of the selectively removed light-emitting elements, performing of the selectively removing comprising selectively illuminating the plurality of light-emitting elements through the second substrate with light in the electromagnetic wavelength band;
- forming a non-monolithic array of light-emitting elements with the selectively removed light-emitting elements in a manner that preserves the relative spatial position of the selectively removed light-emitting elements.
1 more element
Dependencies are inferred from the claim text.