Lighting device and production method

Patent metadata

Field	Value
Publication number	US-11913619-B2
Application number	US-202218073965-A
Country	US
Kind code	B2
Filing date	Dec 2, 2022
Priority date	Jun 3, 2020
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A lighting device for vehicles having a light source apparatus for emitting light, having an optical apparatus, which contains a lens arrangement with a multiplicity of lenses, for deflecting the light in accordance with a specified light distribution, and having a positioner for adjusting a lens along an optical axis of the lens arrangement, wherein the positioner is implemented as an apparatus for setting basic scatter width in such a manner that light can be projected in different scatter widths for a specified basic lighting function.

First claim

What is claimed is:

1. A lighting device comprising:
a light source apparatus to emit light;
an optical apparatus that contains a lens arrangement with at least two lenses to deflect the light in accordance with a specified light distribution to provide a basic lighting function; and
a positioner to adjust a position of a first one of the lenses along an optical axis of the lens arrangement such that a deflection of the light is adjustable to different scatter widths, wherein the positioner adjusts the position of the first one of the lenses to set a basic scatter width for the basic lighting function; and
an aperture stop that is movable along the optical axis of the lens arrangement,
wherein, in a fully assembled state of the lighting device, the first one of the lenses remains permanently fixed in the position that provides the basic scatter width.

2. The lighting device according to claim 1 , wherein the first one of the lenses is a basic setting lens that is arranged to be movable as a function of the basic scatter width to provide the basic lighting function.

3. The lighting device according to claim 2 , wherein the basic setting lens is mounted such that the lens arrangement has a first focal length in a maximum focal length range in a first end position of the basic setting lens, and has a second focal length in a minimum focal length range in a second end position of the basic setting lens.

4. The lighting device according to claim 3 , wherein the basic setting lens is mounted so as to be adjustable by 40 mm to 60 mm or by 50 mm, between the first end position and the second end position.

5. The lighting device according to claim 1 , wherein the at least two lenses of the lens arrangement includes at least four lenses.

6. The lighting device according to claim 1 , wherein the at least two lenses of the lens arrangement includes five lenses, and wherein the five lenses includes two pairs of lenses and the first one of the lenses that is arranged between the two pairs of lenses.

7. The lighting device according to claim 2 , wherein the basic setting lens is a converging lens.

8. The lighting device according to claim 1 , wherein the light source apparatus has a plurality of individually controllable light sources that are arranged in a matrix.

9. A method for producing a lighting device, the method comprising:
assembling components of the lighting device including an aperture stop that is movable along an optical axis of a lens arrangement of the lighting device,
wherein, during assembly of the components, a basic setting lens of the lens arrangement of the lighting device is moved along the optical axis into a basic scatter width setting position in which the lighting device creates a basic lighting function with a specified light distribution, and
wherein, in a fully assembled state of the lighting device, the basic setting lens remains permanently fixed in the basic scatter width setting position.

Assignees

• Hella Gmbh & Co Kgaa

Inventors

• Fedosik Dmitry
• Kalze Franz-Josef
• Klarius Alexander

Classifications

• F21S41/265 Primary

  Composite lenses; Lenses with a patch-like shape · CPC title

• F21S41/143

  the main emission direction of the LED being parallel to the optical axis of the illuminating device · CPC title

• F21S41/153

  arranged in a matrix · CPC title

• F21S41/29

  Attachment thereof (for achieving variable light distribution F21S41/63) · CPC title

• F21S41/635

  by moving refractors, filters or transparent cover plates · CPC title