Led pixel device with dynamic diffuser effects

Patent metadata

Field	Value
Publication number	US-2016146407-A1
Application number	US-201414784935-A
Country	US
Kind code	A1
Filing date	Jun 2, 2014
Priority date	Jun 7, 2013
Publication date	May 26, 2016
Grant date	—

Abstract

The present invention relates to a LED pixel device comprising: a plurality of individual controllable LED pixels arranged in an array; a LED pixel controller adapted to control said number of individual controllable LED pixels; an optical diffuser arranged in front of at least a part of said LED pixels, said optical diffuser receive light from said LED pixels and diffuses the received light; at least one diffuser actuator adapted to moved said LED pixels and said optical diffuser in relation to each other, diffuser controller adapted to control the diffuser actuator; wherein the optical diffuser and the LED pixels can be moved between a non-mixing position and a mixing position, where in said non-mixing position the light emitted by the LED pixels are separated when hitting the optical diffuser and where in the mixing position the light emitted by said LED pixels are at least partial overlapping when hitting said optical diffuser. The present invention relates also to an optical diffuse mountable at a LED pixel device and movable in relation the LED pixel device.

First claim

1 . A light-emitting diode (LED) pixel device, comprising:
a plurality of individual controllable LED pixels arranged in an array; a LED pixel controller adapted to control said plurality of individual controllable LED pixels; a visible optical diffuser arranged in front of at least a part of said LED pixels, said visible optical diffuser receive light from said LED pixels and diffuses the received light, said visible optical diffuser is visible from the front of said LED pixel device and is configured to change the appearance of said LED pixels; at least one diffuser actuator adapted to moved said LED pixels and said visible optical diffuser in relation to each other; and a diffuser controller adapted to control said diffuser actuator; wherein said visible optical diffuser and said LED pixels can be moved between a non-mixing position and a mixing position, where in said non-mixing position the light emitted by said LED pixels are separated when hitting said visible optical diffuser and where in said mixing position the light emitted by said LED pixels are at least partial overlapping when hitting said visible optical diffuser.

2 . A LED pixel device according to claim 1 , wherein said visible optical diffuser in said non-mixing position is arranged adjacent to said LED pixels.

3 . A LED pixel device according to claim 1 , wherein said diffuser controller is adapted to control said diffuser actuator based on an input signal being indicative a position of said LED pixels in relation to said visible optical diffuser.

4 . A LED pixel device according to claim 1 , wherein said LED pixels and said visible optical diffuser are movable in relation to each other along the light emitting axes of said LED pixels.

5 . A LED pixel device according to claim 1 , wherein said LED pixels and said visible optical diffuser are rotatable in relation to each other.

6 . A LED pixel device according to claim 1 , wherein a plurality of diffuser actuators are adapted to moved different parts of said LED pixels and different parts of said visible optical diffuser in relation to each other, and wherein said diffuser controller is adapted to control said plurality of diffuser actuators individually.

7 . An visible optical diffuser for a light-emitting diode (LED) pixel device, said visible optical diffuser comprises:
an visible optical diffuser; at least one mounting mechanism adapted to arrange said visible optical diffuser in front of said LED pixel device such that said optical diffuser receives light from a plurality of LED pixels at said LED pixel device and diffuses the received light and said visible optical diffuser is visible from the front of said LED pixel device and is configured to change the appearance of said LED pixels; and at least one diffuser actuator adapted to move said visible optical diffuser in relation to said LED pixel device; wherein said mounting mechanism and said diffuser actuator are configured to move said visible optical diffuser in relation to said LED pixels between a non-mixing position and a mixing position, where in said non-mixing position the light emitted by said LED pixels are separated when hitting said visible optical diffuser and where in said mixing position the light emitted by said LED pixels are at least partial overlapping when hitting said visible optical diffuser.

8 . An visible optical diffuser according to claim 7 , where in said non-mixing position said mounting mechanism and said diffuser actuator are configured to arrange said visible optical diffuser adjacent said LED pixels.

9 . An visible optical diffuser according to claim 7 , wherein said visible optical diffuser comprises a diffuser controller adapted to control said diffuser actuator.

10 . A visible optical diffuser according to claim 7 , wherein said visible optical diffuser comprises a receiver adapted to receive an input signal indicative of the position of said visible optical diffuser in relation to said LED pixels.

11 . A visible optical diffuser according to claim 10 , wherein said receiver being connectable to the same communication system as said LED pixel device.

12 . An visible optical diffuser according to claim 7 , wherein a plurality of diffuser actuators are adapted to moved different parts of said visible optical diffuser in relation to said LED pixels and wherein said diffuser controller is adapted to control said plurality of diffuser actuators individually.

13 . A display system comprising a central controller and a number of light-emitting diode (LED) pixel devices, wherein said central controller and said number of LED pixel devices are connected through at least one communication system, said number of LED pixel devices comprises a number of LED pixels and said central controller being adapted to control said LED pixels of said LED pixel devices by sending pixel data to said LED pixel devices through said communication system, wherein at least one of said LED pixel devices comprises:
a plurality of individual controllable LED pixels arranged in an array; a LED pixel controller adapted to control said plurality of individual controllable LED pixels; a visible optical diffuser arranged in front of at least a part of said LED pixels, said visible optical diffuser receive light from said LED pixels and diffuses the received light, said visible optical diffuser is visible from the front of said LED pixel device and is configured to change the appearance of said LED pixels; at least one diffuser actuator adapted to moved said LED pixels and said visible optical diffuser in relation to each other; and a diffuser controller adapted to control said diffuser actuator;
wherein said visible optical diffuser and said LED pixels can be moved between a non-mixing position and a mixing position, where in said non-mixing position the light emitted by said LED pixels are separated when hitting said visible optical diffuser and where in said mixing position the light emitted by said LED pixels are at least partial overlapping when hitting said visible optical diffuser; and wherein said central controller being adapted to control said diffuser actuator through said communication system by sending said actuator data to said LED pixel device.

14 . A method of controlling a light-emitting diode (LED) pixel device, wherein said LED pixel device comprises:
a plurality of individual controllable LED pixels arranged in an array; a LED pixel controller adapted to control said plurality of individual controllable LED pixels; an visible optical diffuser arranged in front of at least a part of said LED pixels, said optical diffuser receive light from said LED pixels and diffuses the received light, and said visible optical diffuser is visible from the front of said LED pixel device and is configured to change the appearance of said LED pixels; said method comprises the steps of: controlling the LED pixels using said LED pixel controller; moving at least a part of said LED pixels and said visual optical diffuser in relation to each other using at least one diffuser actuator, wherein said step of moving at least a part of said LED pixels and said visual optical diffuser comprises the step of moving said LED pixels and said visual optical diffuser between a non-mixing position and a mixing position, wherein said non-mixing position the light emitted by said LED pixels are separated when hitting said visual optical diffuser and where in said mixing position the light emitted by said LED pixels are at least partial overlapping when hitting said visual optical diffuser.

15 . A method according to claim 13 ,

Assignees

• Martin Professional Aps

Inventors

• Pelletier Paul

Classifications

• F21V14/02

  by movement of light sources {(in vehicle head lamps F21S41/657)} · CPC title

• G09G2300/0469

  Details of the physics of pixel operation · CPC title

• G02B19/0066

  in the form of an LED array · CPC title

• G09G3/32

  semiconductive, e.g. using light-emitting diodes [LED] · CPC title

• G02B7/005

  Motorised alignment · CPC title