Optical receiving body for at least one LED

• US 5,704,709 A
• Filed: 08/23/1996
• Issued: 01/06/1998
• Est. Priority Date: 08/25/1995
• Status: Expired due to Fees

• Current Assignee: Reitter & Schefenacker GmbH & Co. KG
• Original Assignee: Reitter & Schefenacker GmbH & Co. KG
• Inventors: Sandig, Hellfried, Zwick, Hubert
• Primary Examiner(s): Sember, Thomas M.
• Application Number:
  US08/702,314
• Time in Patent Office: 501 Days
• Field of Search: 362/61, 362/304, 362/230, 362/240, 362/241, 362/244, 362/245, 362/246, 362/247, 362/249, 362/299, 362/300, 362/302, 362/307, 362/308, 362/309, 362/311, 362/327, 362/329 , 362/800
• US Class Current: 362/304
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/315 using total internal reflection
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21V 7/0091 using total internal reflection
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01L 33/58 Optical field-shaping elements
• CPC Class Codes: H01L 33/60 Reflective elements
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

The optical receiving body for at least one LED has an optical member with a receiving chamber for receiving the at least one LED. The LED emits light in a main direction of light emission. The receiving chamber has an inner wall with a parabolic wall section. The parabolic wall section is a first reflective surface for light beams emitted by the at least one LED. The exterior surface of the optical member is provided with at least one second reflective surface.

Claims

1. An optical receiving body for at least one LED, said optical receiving body comprising:

an optical member having a receiving chamber for receiving the at least one LED emitting light in a main direction of light emission;

said receiving chamber having an inner wall comprising a parabolic wall section;

said parabolic wall section being a first reflective surface for light beams emitted by the at least one LED;

wherein the light beams are partly refracted at said parabolic wall section to refracted light beams;

wherein said optical member comprises at least one second reflective surface, wherein the refracted light beams impact on said at least one second reflective surface to be reflected in a main direction of light emission; and

wherein said optical member has an exterior surface and wherein said at least one second reflective surface is located at said exterior surface.

2. An optical receiving body according to claim 1, wherein said optical member has an end face extending perpendicularly to said main direction of light emission and wherein the reflected light beams and the refracted light beams exit through said end face.

3. An optical receiving body according to claim 2, wherein the light beams penetrating said optical member are refracted upon passing through said end face.

4. An optical receiving body according to claim 2, wherein said receiving chamber has an outlet opening for the light within said end face and wherein said end face comprises at least one conical surface surrounding said outlet opening.

5. An optical receiving body according to claim 1, wherein said exterior surface is at least partially metal-coated to form said at least one reflective surface.

6. An optical receiving body according to claim 1, wherein a plurality of said second reflective surfaces are arranged at said exterior surface one after another in an axial direction of said optical member.

7. An optical receiving body according to claim 1, wherein said at least one second reflective surface is conically shaped.

8. An optical receiving body according to claim 1, wherein said at least one second reflective surface is parabolically shaped.

9. An optical receiving body according to claim 1, wherein said at least one second reflective surface is free-formed.

10. An optical receiving body according to claim 1, wherein said at least one second reflective surface is parabolically shaped and free-formed.

11. An optical receiving body according to claim 1, wherein said optical member is substantially cone-shaped.

12. An optical receiving body according to claim 11, wherein said optical member widens in said main direction of light emission.

13. An optical receiving body according to claim 1, wherein said optical member is comprised of transparent material.

14. An optical receiving body according to claim 13, wherein said optical member is comprised of plastic material.