Illumination apparatus

Patent metadata

Field	Value
Publication number	US-12460790-B2
Application number	US-202418749981-A
Country	US
Kind code	B2
Filing date	Jun 21, 2024
Priority date	Jun 22, 2023
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

Aspects and embodiments disclosed herein include an illumination apparatus comprising an LED light generating device comprising groups of LEDs spatially distributed on an emission surface for the generation of light, the generated light being emitted from the emission surface of the LED light generating device through a transparent and resistant protective screen of the LED light generating device, and comprising a replaceable light shaping device mounted in front of the transparent protective screen of the LED light generating device for shaping the light emitted from the emission surface of the LED light generating device.

First claim

What is claimed is:

1 . An illumination apparatus, comprising:
an LED light generating device comprising groups of differently colored LEDs spatially distributed on an emission surface of a substrate for the generation of light, the generated light being emitted from the emission surface of the LED light generating device through a transparent and resistant protective screen of the LED light generating device; and a replaceable light shaping device mounted in front of the transparent and resistant protective screen of the LED light generating device for shaping the light emitted from the emission surface of the LED light generating device, the replaceable light shaping device comprising a replaceable spot optic device configured to shape the light emitted from the emission surface of the LED light generating device for the generation of light with a small half-scatter angle of less than 45 degrees, the spot optic device including a two-dimensional field of juxtaposed replaceable or fixedly mounted multi-lens optical systems, each of which is arranged above a corresponding group of LEDs of the LED light generating device, the multi-lens optical systems of the spot optic device each including a first optical component which collimates the light emitted by the corresponding group of LEDs of the LED light generating device, a second optical component arranged above the first optical component and configured to mix the light emitted by the differently colored LEDs of the group of LEDs and collected by the first optical component, and a third optical component arranged above the second optical component and configured to emit the color-mixed light from the second optical component with a predetermined light intensity distribution as light with a small half-scatter angle; and a plurality of controllable actuators, each of the plurality of controllable actuators configured to adjust a distance between the third optical component and the second optical component of a corresponding one of the multi-lens optical systems.

2 . The illumination apparatus of claim 1 , wherein the transparent and resistant protective screen for protection of the LED light generating device against environmental influences is provided directly in front of the emission surface of the LED light generating device.

3 . The illumination apparatus of claim 2 , wherein a housing of the LED light generating device provided with the transparent and resistant protective screen offers protection of protection class IP65 or higher.

4 . The illumination apparatus of claim 1 , wherein the groups of LEDs arranged spatially distributed on the emission surface of the LED light generating device each comprise a plurality of differently colored LEDs, positioned close to one another on the emission surface of the LED light generating device.

5 . The illumination apparatus of claim 4 , wherein between the LED groups arranged on the emission surface of the LED light generating device in a spatially distributed manner, screening webs are provided which at least partially screen the light emitted laterally by the LEDs of the LED groups.

6 . The illumination apparatus of claim 5 , wherein each multi-lens optical system of the spot optic device comprises a plurality of optical components arranged one above the other, which are delimited from neighboring multi-lens optical systems of the spot optic device by a corresponding stray light limitation of the respective multi-lens optical system.

7 . The illumination apparatus of claim 1 , wherein the two-dimensional field of multi-lens optical systems comprises a first number, N, of rows and a second number, M, of columns.

8 . The illumination apparatus of claim 7 , wherein each multi-lens optical system within the two-dimensional field of the spot optic device has a width, B, in an x-direction, a length, L, in a y-direction and a height, H, in a z-direction, wherein a surface oriented in the x-direction and in the y-direction is aligned parallel to the emission surface of the LED light generating device.

9 . The illumination apparatus of claim 8 , wherein the multi-lens optical systems have the same or different heights, H, within the two-dimensional field of the spot optic device.

10 . The illumination apparatus of claim 7 , wherein the various optical multi-lens systems within the two-dimensional field of the spot optic device can be addressed by a control device by means of a row number, i, and by means of a column number, j.

11 . The illumination apparatus of claim 1 , wherein the first optical component is a collimation lens.

12 . The illumination apparatus of claim 1 , wherein the second optical component is a condenser lens.

13 . The illumination apparatus of claim 1 , wherein the third optical component is a Fresnel lens.

14 . The illumination apparatus of claim 1 , wherein a distance between the third optical component and the second optical component of a multi-lens optical system of the spot optic device is automatically or manually adjustable to change the half-scatter angle of the respective multi-lens optical system.

15 . The illumination apparatus of claim 1 , wherein the controllable actuator is one of a servomotor, a piezo drive, and a hydraulic drive.

16 . The illumination apparatus of claim 1 , wherein the actuator of the optical multi-lens system can be addressed by a control device by means of a row number, i, and by means of a column number, j, of the optical multi-lens system within the two-dimensional field of the spot optic device and receives setting values for setting the distance between the third optical component and the second optical component of the optical multi-lens system from the control device.

17 . The illumination apparatus of claim 1 , wherein a ratio between a half-scatter angle of the hard light emitted from the multi-lens optical system of the spot device to a half-scatter angle of the soft light emitted from the soft optic is about one to four.

18 . The illumination apparatus of claim 1 , wherein the half-scatter angle of the hard light emitted by the multi-lens optical system of the spot optic device is adjustable in a range between 10 degrees and 30 degrees.

19 . The illumination apparatus of claim 1 , further comprising a first control device configured to independently control each of the groups of LEDs of the LED light generating device to adjust at least one of the brightness and the color of the light generated by the respective LED group.

20 . The illumination apparatus of claim 19 , wherein the first control device is integrated into the LED light generating device.

21 . The illumination apparatus of claim 1 , wherein the controllable actuators of the multi-lens optical systems of the spot optic device are configured to be controlled independently of one another by a second control device for adjusting the half-scatter angle of the light emitted by the respective multi-lens optical system of the spot optic device.

22 . The illumination apparatus of claim 21 , wherein the second control device is integrated into the spot optic device.

23 . The illumination apparatus of claim 1 , wherein an emission direction of a light emitted from a multi-lens optical system of the spot optic device is adjustable by a third control device.

24 . The illumination apparatus of claim 23 , wherein the third control device is integrated into the spot optic device.

25 .

Assignees

• Arnold & Richter Cinetech

Inventors

• Melzner Erwin
• Schumacher Volker
• Hendricks Frank

Classifications

• F21V17/002 Primary

  with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function (F21V17/10 takes precedence) · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21Y2113/13

  comprising an assembly of point-like light sources · CPC title

• F21Y2105/16

  square or rectangular, e.g. for light panels · CPC title

• F21V3/0625

  the material diffusing light, e.g. translucent plastics · CPC title