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US 11,888,100 B2Granted
LED array with light intensity adaptive LED sidewalls
AssigneeLumileds LLC
InventorsKentaro Shimizu, Marcel Rene Bohmer, Daniel Estrada, Jacobus Johannes Franciscus Gerardus Heuts
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Abstract
A first LED with a first LED sidewall is disclosed. A second LED with a second LED sidewall facing the first LED sidewall is also disclosed. A first dynamic optical isolation material between the first LED sidewall and the second LED sidewall and configured to change an optical state based on a state trigger such that a light behavior at the first LED sidewall for a light emitted by one of the first LED and the second LED is determined by the optical state, is also disclosed.
Claims20
A device comprising:
- a microLED array comprising a plurality of microLEDs, each microLED separated from an adjacent microLED in the array by a trench, each microLED having sidewalls;
- and
- a dynamic optical isolation material attached to a sidewall of a first microLED in the array, the sidewall located in the trench between the first microLED and another microLED in the array, the dynamic optical isolation material switchable between a plurality of optical states comprising a first optical state configured to hinder a transmission of light through the dynamic optical isolation material and a second optical state configured to allow light to pass through the dynamic optical isolation material, the dynamic optical isolation material configured to switch between optical states based on a state trigger,
- the trench between the first microLED and the another microLED in the array configured so that when the dynamic optical isolation material in the trench is in the second optical state, the trench is substantially transparent.
1 more element
An illumination system comprising:
- an LED array comprising:
- a plurality of LEDs, each LED separated from an adjacent LED in the array by a trench, each LED having sidewalls;
- and
- a dynamic optical isolation material attached to a sidewall of a first LED in the array, the sidewall located in the trench between the first LED and another LED in the array, the dynamic optical isolation material switchable between a plurality of optical states comprising a first optical state configured to hinder a transmission of light through the dynamic optical isolation material and a second optical state configured to allow light to pass through the dynamic optical isolation material, the dynamic optical isolation material configured to switch between optical states based on a state trigger,
- the trench between the first LED and the another LED in the array configured so that when the dynamic optical isolation material in the trench is in the second optical state, the trench is substantially transparent;
- and
- one or more optical elements arranged to form an output illumination beam from light emitted by the LEDs in the LED array.
4 more elements
A mobile device comprising:
- a camera;
- and
- a flash illumination system comprising:
- an LED array comprising:
- a plurality of LEDs, each LED separated from an adjacent LED in the array by a trench, each LED having sidewalls;
- and
- a dynamic optical isolation material attached to a sidewall of a first LED in the array, the sidewall located in the trench between the first LED and another LED in the array, the dynamic optical isolation material switchable between a plurality of optical states comprising a first optical state configured to hinder a transmission of light through the dynamic optical isolation material and a second optical state configured to allow light to pass through the dynamic optical isolation material, the dynamic optical isolation material configured to switch between optical states based on a state trigger,
- the trench between the first LED and the another LED in the array configured so that when the dynamic optical isolation material in the trench is in the second optical state, the trench is substantially transparent;
- and
- a lens arranged to form an output flash illumination beam from light emitted by the LED pixels in the LED array.
7 more elements
Dependencies are inferred from the claim text.