Optical component and illumination device

• US 8,757,849 B2
• Filed: 11/19/2008
• Issued: 06/24/2014
• Est. Priority Date: 11/23/2007
• Status: Active Grant

• Current Assignee: OSRAM GmbH (Ams-Osram AG), Osram Opto Semiconductors GmbH (Ams-Osram AG)
• Original Assignee: OSRAM GmbH (Ams-Osram AG), Osram Opto Semiconductors GmbH (Ams-Osram AG)
• Inventors: Brick, Peter, Muschaweck, Julius, Schwalenberg, Simon
• Primary Examiner(s): Lee, Jong-Suk (James)
• Assistant Examiner(s): Gyllstrom, Bryon T
• Application Number:
  US12/744,476
• Publication Number:
  US 20110188242A1
• Time in Patent Office: 2,043 Days
• Field of Search: 362/311.01, 362/311.06, 362/311.15, 362/326, 362/330, 362/509, 362/521, 362/522, 362/217.04, 362/244, 362332-340, 359/619, 359621-624, 359/642, 359/707, 359/718, 359/721, 359796-797
• US Class Current: 362/333
• CPC Class Codes: G02B 3/0006 Arrays G02B3/02, G02B5/188 take precedence
• CPC Class Codes: G03B 21/2033 LED or laser light sources
• CPC Class Codes: G03B 21/208 Homogenising, shaping of the illumination light
• CPC Class Codes: G03B 21/625 Lenticular translucent screens

Abstract

An optical component comprises a carrier plate (1) having a first main surface (2) and a second main surface (3) facing away from the first main surface (2), and a first lens structure (4) on the first main surface (2), wherein the first lens structure (4) has at least a first lens element (41) having a first polygonal form and a second lens element (42) having a second polygonal form, the first lens structure (4) completely covers the first main surface (2), and the first lens element (41) and the second lens element (42) are non-congruent with respect to one another and/or differ in terms of their orientation on the first main surface (2) of the carrier plate (1).

Claims

1. An optical component, comprising:

a carrier plate having a first main surface and a second main surface facing away from the first main surface;

a first lens structure projecting outwardly from the first main surface; and

a second lens structure projecting outwardly from the second main surface, the second lens structure on the second main surface being mirror-inverted with respect to the first lens structure on the first main surface;

wherein the first lens structure has at least a first lens element having a first hexagonal form and a second lens element having a second hexagonal form;

wherein the first lens structure completely covers the first main surface

wherein the first and second lens structures comprise lens elements having a three-dimensionally convexly curved surface; and

wherein the first lens element and the second lens element are at least one of non-congruent with respect to one another and differ in orientation on the first main surface of the carrier plate.

2. The optical component as claimed in claim 1, wherein the first lens element and the second lens element are arranged in a manner rotated relative to one another on the carrier plate.

3. The optical component as claimed in claim 1, wherein the first polygonal form and the second polygonal form are shaped differently.

4. The optical component as claimed in claim 1, wherein the carrier plate is shaped integrally with the first lens structure.

5. The optical component as claimed in claim 1, wherein the first lens element has a curved area bounded by a boundary line having the first hexagonal form, and wherein the second lens element has a curved area bounded by a boundary line having the second hexagonal form.

6. The optical component as claimed in claim 1, wherein the first lens element and the second lens element have the same focal length.

7. The optical component as claimed in claim 6, wherein the carrier plate has a thickness that is less than the focal length of the first and of the second lens elements.

8. The optical component as claimed in claim 1, wherein the carrier plate comprises a material from a group formed by a plastic, a semiconductor material and glass.

9. The optical component as claimed in claim 1, wherein the first polygonal form and the second polygonal form are in each case a hexagon.

10. The optical component as claimed in claim 1, wherein the first lens structure has a multiplicity of lens elements each having a polygonal form.

11. The optical component as claimed in claim 10, wherein the first main surface has a midpoint, and wherein each of the multiplicity of lens elements occupies an area on the first main surface which becomes smaller with increasing distance from the midpoint.

12. The optical component as claimed in claim 10, wherein each of the multiplicity of lens elements and lens elements directly adjacent thereto are rotated relative to one another.

13. An illumination device, comprising:

a light source, which emits light into a delimited solid angle range during operation; and

an optical component as claimed in claim 1 in the beam path of the light source;

wherein the light source has an arrangement comprising light-emitting diodes and a collimator disposed downstream of the arrangement.

14. The optical component as claimed in claim 1, wherein the lens elements of the first and second lens structures are formed as parts of spherical or aspherical convex lenses.

15. An optical component, comprising:

a carrier plate having a first main surface and a second main surface facing away from the first main surface, each of the first and second main surfaces extending across the carrier plate from a midpoint to a circumference of the carrier plate; and

a first lens structure projecting outwardly from the first main surface;

wherein the first lens structure has at least a first lens element having a first hexagonal form and a second lens element having a second hexagonal form;

wherein the first lens structure completely covers the first main surface;

wherein the first lens element and the second lens elements are at least one of non-congruent with respect to one another and differ in orientation on the first main surface of the carrier plate;

wherein the first lens structure comprises a multiplicity of lens elements that completely cover the first main surface, each of the multiple lens elements having a convexly curved surface and a polygonal form; and

wherein the first main surface has a midpoint, each of the multiplicity of lens elements occupying an area on the first main surface which becomes smaller with increasing distance from the midpoint.