Multifunction lamp unit and rear view device therewith

Patent metadata

Field	Value
Publication number	US-2017240102-A1
Application number	US-201715589043-A
Country	US
Kind code	A1
Filing date	May 8, 2017
Priority date	Jan 24, 2012
Publication date	Aug 24, 2017
Grant date	—

Abstract

A multifunction lamp unit for a vehicle includes a housing, at least one light conductor with at least one illuminant provided by an LED on a printed circuit board, at least one light foil, and a clear lens. A method for manufacturing lamps for vehicles includes producing a housing, a light conductor, and a clear lens as one unit out of plastic in a 3-component injection procedure.

First claim

What is claimed is:

1 . A multifunction lamp unit for a vehicle, comprising:
a housing; at least one light conductor with at least one illuminant provided by an LED on a printed circuit board; at least one light foil; and a clear lens.

2 . The multifunction lamp unit of claim 1 ,
wherein the multifunction lamp unit, including the clear lens and the at least one light conductor, is produced out of plastic in a 3-component injection procedure, and wherein the refractive index of the plastic of the clear lens is selected to be different from the refractive index of the plastic of the at least one light conductor, and the boundary between the clear lens and the at least one light conductor adjacent to it is at least partly separated by a structure.

3 . The multifunction lamp unit of claim 1 , wherein the at least one light foil is arranged at least partly between the clear lens and at least a part of the at least one light conductor.

4 . The multifunction lamp unit according to claim 1 , wherein at least one light conditioning area configured to be used for tinting, dying, reflecting, or scattering is introduced into at least one of the at least one light conductor and the clear lens by choosing at least one additive for the respective plastic.

5 . The multifunction lamp unit according to claim 1 , wherein the housing is formed with a first recess to build an installation space for at least one illuminant, and the first recess is sealed.

6 . The multifunction lamp unit according to claim 5 , wherein the housing is formed with a second recess to build an installation space for a control unit, and the second recess is sealed.

7 . The multifunction lamp unit according to claim 6 , wherein the control unit is connected to at least one of the at least one illuminant, the light foil and the vehicle.

8 . The multifunction lamp unit according to claim 1 , wherein the light foil extends along at least a part of the clear lens.

9 . The multifunction lamp unit according to claim 1 ,
wherein the at least one light conductor comprises a first light conductor and a second light conductor, and wherein at least one light coupling area is provided at at least one of a first end of the first light conductor facing an installation space and a first end of the second light conductor extending along a region of the at least one light foil.

10 . The multifunction lamp unit according to claim 9 , wherein each of the first light conductor and the second light conductor is enclosed by the housing and the clear lens.

11 . The multifunction lamp unit according to claim 9 , further comprising at least one light decoupling area,
wherein the at least one illuminant comprises a first illuminant, and light rays from the first illuminant are subjected to a total reflection at the boundary between the first light conductor and the clear lens outside the at least one light decoupling area.

12 . The multifunction lamp unit according to claim 9 , wherein the at least one illuminant comprises a first illuminant and a second illuminant, and light rays from the second illuminant are decoupled along at least a part of the extent of the second light conductor.

13 . The multifunction lamp unit according to claim 12 , wherein the light rays decoupled from the second light conductor pass at least one of the light foil, the clear lens, and the housing.

14 . The multifunction lamp unit according to claim 12 , wherein the light rays decoupled from the second light conductor pass an opening in at least one of the light foil and the housing.

15 . The multifunction lamp unit according to claim 9 , wherein the at least one light conductor further comprises a third light conductor and the at least one illuminant comprises a first illuminant, a second illuminant, and a third illuminant, and wherein light rays from the third illuminant are coupled at a first end of the third light conductor and decoupled at a second end of the third light conductor.

16 . The multifunction lamp unit according to claim 1 , further comprising a plurality of light decoupling regions provided by at least one of the clear lens and the housing.

17 . The multifunction lamp unit according to claim 1 , wherein the multifunction lamp unit is configured to provide a plurality of light decoupling directions or light decoupling ranges.

18 . The multifunction lamp unit according to claim 1 , further comprising a plurality of light decoupling regions, with light having different characteristics being decoupled from the different decoupling regions.

19 . The multifunction lamp unit according to claim 1 , wherein the clear lens is made out of a polymeric substrate, wherein the polymeric substrate is coated with a chromium-based reflective coating and wherein the polymeric substrate and the chromium-based reflective coating are at least in part permeable to light originating from at least one of the light foil and the at least one illuminant.

20 . The multifunction lamp unit according to claim 19 , wherein the coating is an alloy of chromium and a dopant material, the dopant material being selected from hexagonally close-packed transition metals, the alloy having a crystal structure of a primary body-centered cubic phase in coexistence with a secondary omega hexagonally close-packed phase.

21 . The multifunction lamp unit according to claim 19 , wherein the at least one illuminant comprises a first illuminant, a second illuminant, a third illuminant, and a fourth illuminant, and the polymeric substrate comprises a polymeric light pipe into which light from the fourth illuminant is coupled.

22 . The multifunction lamp unit according to claim 20 , wherein the alloy is a binary alloy of chromium and the dopant material.

23 . The multifunction lamp unit according to claim 19 , wherein the atomic percentage of the dopant material in the binary alloy ranges from about 1.9 at. % to about 5.8 at. %.

24 . The multifunction lamp unit according to claim 19 , wherein the dopant material is selected from hexagonally close-packed transition metals zirconium, titanium, cobalt, hafnium, rubidium, yttrium and osmium.

25 . The multifunction lamp unit according to claim 19 , wherein the dopant material is selected from hexagonally close-packed transition metals zirconium, titanium and cobalt.

26 . The multifunction lamp unit according to claim 20 , wherein the alloy is a binary alloy and the dopant material is zirconium, and wherein the atomic percentage of the zirconium in the binary alloy ranges from about 4.5 at. % to about 5.8 at. %.

27 . The multifunction lamp unit according to claim 20 , wherein the alloy is a binary alloy and the dopant material is titanium, and wherein the atomic percentage of the titanium in the binary alloy ranges from about 1.9 at. % to about 5.8 at. %.

28 . The multifunction lamp unit according to claim 20 , wherein the alloy is a binary alloy and the dopant material is cobalt, and wherein the atomic percentage of the cobalt in the binary alloy ranges from about 1.9 at. % to 5.7 at. %.

29 . The multifunction lamp unit according to claim 19 , wherein the coating has a thickness of 200 nm, 100 nm, from 40 nm to 80 nm, from 50 nm to 70 nm, or about 60 nm.

30 . The multifunction lamp unit according to claim 19 , wherein the polymeric substrate

Assignees

• Smr Patents Sarl

Inventors

• Negel Raimund
• Schmierer Arne
• Fritz Daniel

Classifications

• F21S43/14

  Light emitting diodes [LED] · CPC title

• B29C45/16

  Making multilayered or multicoloured articles {(B29C45/0062 takes precedence; feeding colouring materials into the injection unit B29C45/1816)} · CPC title

• B29D11/00663

  Production of light guides · CPC title

• G02B6/0038

  Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide · CPC title

• B29L2031/747

  Lightning equipment · CPC title