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Micro LED sheet with small spheres to enable digital beam shaping

A beam shaping and light source technology, which is applied in semiconductor devices, optics, light sources, etc. of light-emitting elements, can solve the problem of diffuse light generated by micro-LED arrays, etc.

Pending Publication Date: 2021-11-16
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This array of tiny LEDs could essentially create diffuse light

Method used

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  • Micro LED sheet with small spheres to enable digital beam shaping
  • Micro LED sheet with small spheres to enable digital beam shaping
  • Micro LED sheet with small spheres to enable digital beam shaping

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0107] The present invention is further described below. The term "microLED" may in an embodiment refer to a micro LED (microLED), but may also be used as an example of a light source, and thus in other embodiments may also refer to eg a microLED, such as a miniLED.

[0108] Figure 1a schematically depicts an embodiment where a regular array of spheres is placed on a regular array of microLEDs.

[0109] FIG. 1 a schematically depicts an embodiment of a lighting device 1100 comprising a first 2D arrangement 100 of n plurality of light sources 10 , and a second 2D arrangement 200 of m plurality of beam shaping elements 20 arranged downstream of the light sources 10 . The light source 10 is configured to generate source light 11 . The beam shaping element 20 is configured to shape the beams of source light 11 of n light sources 10 . Here, in this (and other) schematically depicted embodiments, the beam shaping element 20 comprises a sphere. However, in other embodiments, alter...

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PUM

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Abstract

The invention provides a lighting device (1100) comprising a first 2D arrangement (100) of a plurality n of light sources (10) and a second 2D arrangement (200) of a plurality m of beam shaping elements (20) configured downstream of the light sources (10), wherein: the light sources (10) are configured to generate light source light (11), wherein the n light sources (10) comprises a plurality k of individually controllable subsets (110) of light sources (10), wherein the beam shaping elements (20) are configured to shape a beam of the light source light (11) of the n light sources (10), and wherein n>=16, m>=4, n / m>1, and 4<=k<=n; upstream of each beam shaping element (20) light sources (10) are configured of different individually controllable subsets (110), and wherein two or more of the beam shaping elements (20) have different spatial configurations of the light sources (10) that are configured upstream of the respective beam shaping elements (20).

Description

technical field [0001] The invention relates to a lighting device. The invention also relates to a luminaire or lighting system comprising such a lighting device. Background technique [0002] Panels with lens arrays are known in the art. For example, US2017 / 0242161 describes a display panel comprising: a substrate; an array of pixel light sources generating light; an array of pixel driver circuits electrically coupled to the array of pixel light sources, wherein the pixel driver circuits drive corresponding pixel light sources and each each pixel light source is individually controllable; and a microlens array aligned with the pixel light source and positioned to reduce divergence of light generated by the pixel light source, wherein the pixel driver circuit array, the pixel light source array, and the microlens The arrays are all integrated on the substrate. The display panel also includes optical spacers maintaining the position of the microlens array relative to the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/00G02B3/00F21Y115/10F21Y105/12
CPCF21V5/007F21V5/004F21Y2115/10G02B3/0037F21Y2105/12G02B19/0066G02B19/0014F21Y2107/70F21V5/041H05B47/17F21V5/002F21V14/04
Inventor M·C·J·M·维森伯格
Owner SIGNIFY HLDG BV