Software configurable lighting device

Patent metadata

Field	Value
Publication number	US-10349488-B2
Application number	US-201615209878-A
Country	US
Kind code	B2
Filing date	Jul 14, 2016
Priority date	Jul 17, 2015
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

The examples relate to various implementations of a software configurable lighting device, installed as a panel, that offers the capability to appear like and emulate a variety of different lighting devices. Emulation includes the appearance of the lighting device as installed in the wall or ceiling, possibly, both when lighting and when not lighting, as well as light output distribution, e.g. direction and/or beam shape.

First claim

What is claimed is:

1. A lighting device, comprising:
a pixel controllable light generation and pixel controllable spatial light distribution system, wherein the pixel controllable light generation and pixel controllable spatial light distribution system includes at least one pixelated light source and/or multi-color light source;
a driver coupled to the controllable system to control at a pixel level, light generated by the system and to control at a pixel level, a spatial distribution of the generated light;
a memory;
a processor having access to the memory and coupled to the driver to control operation of the driver; and
programming in the memory, wherein execution of the programming by the processor configures the lighting device to perform functions including functions to:
obtain an image selection and a general lighting distribution selection as software control data;
present an image output, based on the image selection;
emit light, via the at least one pixelated light source and/or multi-color light source, for general illumination from the lighting device and having the selected light distribution for an area of the lighting device;
time division multiplex lighting device output during repetitions of a duty cycle including a general illumination lighting time duration and a display presentation time duration, to emit the light for general illumination having the selected light distribution during the general illumination lighting time duration of each repetition of the duty cycle and to display the image output during the display presentation time duration of each repetition of the duty cycle distinctly different from the general illumination lighting time duration of each repetition of the duty cycle; and
during the display presentation time duration, supply a plurality of timing signals corresponding to the light distribution for the image selection to drive spatial modulation by pixel controllable light generation and pixel controllable spatial light distribution system, to enable the image output on the lighting device during each repetition of the duty cycle.

2. The lighting device of claim 1 , wherein the pixel controllable system comprises a matrix of pixels, each pixel including:
a pixel light source electrically controllable with respect to one or more light output parameters comprising light intensity or light color characteristic; and
a pixel spatial light modulator optically coupled to process light from the light source of the pixel and configured to be electrically controllable with respect to at least one of beam shape or beam distribution of light from the pixel light source.

3. The lighting device of claim 2 , wherein the driver is configured to provide image drive signals to the light sources of the pixels and modulation control signals to the spatial light modulators of the pixels.

4. The lighting device of claim 2 , wherein the pixel light source comprises a source selected from the group consisting of:
planar light emitting diodes (LEDs) of different colors;
a micro LED;
organic LEDs of different colors;
pixels of an organic LED display;
LEDs on gallium nitride (GaN) substrates of different colors;
nanowire or nanorod LEDs of different colors;
photo pumped quantum dot (QD) LEDs of different colors;
plasmonic LEDs of different colors;
pixels of a plasma display;
laser diodes of different colors;
micro LEDs of different colors;
resonant-cavity (RC) LEDs of different colors;
Super luminescent Diodes (SLD) of different colors; and
photonic crystal LEDs of different colors.

5. The lighting device of claim 2 , wherein each of the pixel spatial light modulators comprises an electrically controllable liquid lens.

6. The lighting device of claim 2 , wherein each pixel spatial light modulator comprises an electrically controllable liquid prism.

7. The lighting device of claim 6 , wherein each of pixel spatial light modulator further comprises an electrically controllable liquid lens.

8. The lighting device of claim 2 , wherein each pixel spatial light modulator comprises a light scattering based beam shaping device selected from one or more of electro-chromic materials, an electrophoretic ink, polymer dispersed liquid crystals, or polymer stabilized cholesteric texture liquid crystals.

9. The lighting device of claim 1 , wherein the pixel controllable system comprises a spatial modulator comprising at least one controllable optic selected from the group consisting of:
(a) MEMS and NEMS based Dynamic Optical Beam Control;
(b) Electrowetting based Dynamic Optical Beam Control;
(c) Passive control using segment control (X-Y area and pixels);
(d) Holographic films; and
(e) LCD Materials.

10. The lighting device of claim 2 , wherein for each pixel:
the pixel light source comprises a plurality of controllable sources of light of different color characteristics; and
the pixel spatial light modulator comprises a plurality of electrically controllable liquid lenses or prisms, one of the lenses or prisms being optically coupled to spatially modulate light output from a respective one of the plurality of controllable sources of light of one of the different colors.

11. The lighting device of claim 2 , wherein each pixel further comprises a microlens film aligned on top of the light source of the pixel for collimating the light from the light source output to the spatial light modulator of the pixel.

12. The lighting device of claim 2 , wherein for each pixel:
the pixel light source comprises a plurality of controllable sources of light of different color characteristics; and
the pixel spatial light modulator is a single electrically controllable liquid lens and/or liquid prism optically coupled to spatially modulate light output from all of the plurality of controllable sources of light of one of the different colors of the pixel.

13. The lighting device of claim 2 , wherein for each pixel, the pixel spatial light modulator comprises a liquid crystal polarization grating (LCPG) beam steering assembly.

14. The lighting device of claim 13 , wherein the LCPG beam steering assembly comprises a liquid crystal half-waveplate and an active switchable polarization grating.

15. The lighting device of claim 13 , wherein the LCPG beam steering assembly comprises a plurality of active switchable liquid crystal half-waveplates and a plurality of passive polarization gratings interspersed with the active switchable liquid crystal half-waveplates.

16. The lighting device of claim 13 , wherein the LCPG beam steering assembly comprises:
a first polarization grating optically coupled to the pixel light source and configured to angularly separate light from the pixel light source into light of different first and second polarizations; and
first and second active polarization grating stacks optically coupled to the first polarization grating to respectively receive the light of the first and second polarizations, each of the active polarization grating stacks being configured to selectively steer the respective light of the first and second polarizations in response to a respective beam steering control signal from the driver.

17. The lighting device of claim 2 , wherein each of the pixel spatial light modulators comprises a micro-electro-mechanical systems (MEMS) mirror.

18. The lighting device of claim 1 , wherein execution of the programming by the processor further configures the lighting device to emit the light for general illumination having the selected light distribution simultaneously with the image outpu

Assignees

• Abl Ip Holding Llc

Inventors

• Black Mark A
• Rains Jr Jack C
• Ramer David P
• Raj Rashmi Kumar
• Mao An
• Komanduri Ravi Kumar
• MAHER Hampton Boone

Classifications

• H05B47/10

  Controlling the light source · CPC title

• G02B26/0883 Primary

  the refracting element being a prism · CPC title

• G02F1/292

  by controlled diffraction or phased-array beam steering (controlled diffraction for optical switching G02F1/31) · CPC title

• H05B47/175

  by remote control · CPC title

• G02F1/29

  for the control of the position or the direction of light beams, i.e. deflection · CPC title