Vehicle Light and Vehicle Including a Vehicle Light

Abstract

A vehicle light includes at least one light-emitting diode and a free-form optical element optically downstream of the at least one light-emitting diode. A diaphragm is mounted on a side of the free-form optical element that faces the at least one light-emitting diode. A vehicle includes at least one such vehicle light.

Claims

1.-9. (canceled)

10. A vehicle light comprising: at least one light-emitting diode; a freeform optical unit disposed optically downstream of the at least one light-emitting diode; and a diaphragm that is applied to a side of the freeform optical unit facing the at least one light-emitting diode.

11. The vehicle light according to claim 10, wherein the diaphragm is a film that is applied to an optical element of the freeform optical unit.

12. The vehicle light according to claim 10, wherein the diaphragm is a layer that is applied to an optical element of the freeform optical unit by vapor deposition, spraying or printing.

13. The vehicle light according to claim 10, wherein the diaphragm is an optically nontransmissive partial region of an optical element of the freeform optical unit, wherein the optical element is produced as a multi-component injection-molded part.

14. The vehicle light according to claim 10, wherein the diaphragm is light-absorbing at least at a side facing the at least one light-emitting diode.

15. The vehicle light according to claim 10, wherein the freeform optical unit consists of a freeform lens.

16. The vehicle light according to claim 10, wherein the freeform optical unit comprises a plurality of optical elements, and at least one optical element of the plurality of optical elements is a freeform lens.

17. A vehicle comprising at least one vehicle light according to claim 10.

18. The vehicle according to claim 17, wherein the vehicle light is an environment projector for illuminating an area of ground at an access region.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG. 1 shows as a sectional illustration, in a side view, selected components of a vehicle headlight according to the invention.

[0027] FIG. 2 shows a diaphragm of the vehicle headlight from FIG. 1 in a front view.

DETAILED DESCRIPTION OF THE DRAWINGS

[0028] FIG. 1 shows as a sectional illustration, in a side view, components of a vehicle light according to the invention in the form of an environment projector 1, specifically a light generating module 2 and a freeform optical unit in the form of a single freeform lens 3 shown by way of example here. The freeform lens 3 depicted is illustrated, without being faithfully realistic, as a conventional planoconvex lens having a light incidence surface 4 facing the light generating module 2 and a light emission surface 5 facing away from the light generating module 2. In reality, however, the light incidence surface 4 and/or the light emission surface 5 are/is freely shaped in a complex manner.

[0029] The light generating module 2 here comprises a plurality of LED chips 7 applied on a common substrate 6, the light L from said chips being directed along a main emission direction R onto the light incidence surface 4. The light L can be white, ECE-conforming light. The LED chips 7 can be arranged in a matrix-like fashion with respect to one another. The light generating module 2 can comprise one or more primary and/or secondary optical units (not illustrated) for beam shaping of the light L emitted by the light generating module 2, e.g. for beam focusing, collimation, etc.

[0030] A light coupling-out optical unit (not illustrated) for coupling out the light L emitted by the freeform lens 3 can be disposed optically downstream of the freeform lens 3.

[0031] Between the light generating module 2 and the freeform lens 3, an offset with respect to a target position can occur, e.g. in the context of an assembly of the environment projector 1. A relative offset that is lateral or perpendicular with respect to the main emission direction R is indicated here purely by way of example by the double-headed arrow; however, a longitudinal offset can also occur, in the case of which the distance between light generating module 2 and freeform lens 3 changes or is established incorrectly.

[0032] In order to reduce an effect of the offset, here a ply- or layer-like diaphragm 8 is applied to the light incidence surface 4 of the freeform lens 3, e.g. in the form of a film adhering thereon, or a layer applied thereto by vapor deposition, spraying or printing, etc. Alternatively, the diaphragm 8 can be embodied as an optically nontransmissive partial region of the freeform lens 3 produced as a multi-component injection-molded part.

[0033] In order to avoid unwanted reflection effects in the light L emitted by the freeform lens 3, the diaphragm 8 can be embodied as light-absorbing at least at its side facing the light generating module 2, for example in matte black.

[0034] The environment projector 1 can constitute one, in particular one of a plurality of, environment projectors 1 of a vehicle F.

[0035] FIG. 2 shows the diaphragm 8 of the environment projector 1 in a front view, in particular in the direction of the main emission direction R or counter to the main emission direction R (the view then being directed toward the light generating module 2). The diaphragm 8 here comprises an opening 9 having for example a rectangular contour 10.

[0036] It goes without saying that the present invention is not restricted to the exemplary embodiment shown.

[0037] Generally, “a(n)”, “one” etc. can be understood as a singular or a plural, particularly in the sense of “at least one” or “one or more” etc., as long as this is not explicitly excluded, e.g. by the expression “exactly one” etc.

LIST OF REFERENCE SIGNS

[0038] 1 Environment projector [0039] 2 Light generating module [0040] 3 Freeform lens [0041] 4 Light incidence surface [0042] 5 Light emission surface [0043] 6 Substrate [0044] 7 LED chip [0045] 8 Diaphragm [0046] 9 Opening [0047] 10 Contour [0048] F Vehicle [0049] L Light [0050] R Main emission direction