Headlight lens for a vehicle headlight

Patent metadata

Field	Value
Publication number	US-2017261169-A1
Application number	US-201715499265-A
Country	US
Kind code	A1
Filing date	Apr 27, 2017
Priority date	Dec 3, 2010
Publication date	Sep 14, 2017
Grant date	—

Abstract

A headlight lens for a vehicle headlight, the headlight lens having a body of transparent material. The monolithic body includes a light passage section having at least one optically operative light exit face and a light tunnel having at least one optically operative light entry face. The light tunnel transits into the light passage section via a bend being curved in its longitudinal extension, wherein the light tunnel at the bend has a smaller cross section than the light passage section at the bend and wherein the light passage section is configured for imaging the bend as a bright-dark-boundary.

First claim

1 - 30 . (canceled)

31 . Headlight lens for a vehicle headlight, the headlight lens having:
a monolithic body of transparent material, the monolithic body including a light passage section having at least one optically operative light exit face; and a light tunnel having at least one light entry face, the light tunnel transiting into the light passage section via a bend; wherein the light tunnel at the bend has a smaller cross section than the light passage section at the bend; and wherein the light passage section is configured for imaging the curved transition as a bright-dark-boundary.

32 . The headlight lens of claim 31 , wherein the bend is a curved transition.

33 . The headlight lens of claim 32 , wherein the bend is curved in a vertical plane.

34 . The headlight lens of claim 32 , wherein the curved transition has a radius of curvature being no larger than 5 mm.

35 . The headlight lens of claim 32 , wherein the curved transition has a radius of curvature being no larger than 0.25 mm.

36 . The headlight lens of claim 33 , wherein the curved transition has a radius of curvature being no larger than 5 mm.

37 . The headlight lens of claim 33 , wherein the curved transition has a radius of curvature being no larger than 0.25 mm.

38 . The headlight lens of claim 33 , wherein the curved transition has a radius of curvature being no less than 50 nm.

39 . The headlight lens of claim 33 , wherein the bend is additionally curved in a horizontal plane.

40 . The headlight lens of claim 33 , wherein the light entry face is inclined with respect to an optical axis of the light passage section.

41 . The headlight lens of claim 31 , wherein the light entry face is inclined with respect to an optical axis of the light passage section.

42 . The headlight lens of claim 31 , wherein the light entry face is inclined with respect to an optical axis of the light passage section at an angle of between 5° and 70°.

43 . The headlight lens of claim 31 , wherein the light entry face is inclined with respect to an optical axis of the light passage section at an angle of between 20′ and 50°.

44 . The headlight lens of claim 31 , wherein the light tunnel comprises a region on its surface which corresponds essentially to a part of the surface of an ellipsoid.

45 . The headlight lens of claim 33 , wherein the light tunnel comprises a region on its surface which corresponds essentially to a part of the surface of an ellipsoid.

46 . The headlight lens of claim 38 , wherein the transparent material is inorganic glass.

47 . The headlight lens of claim 33 , wherein a surface of the light passage section facing the light tunnel is curved at least in the region of the bend.

48 . The headlight lens of claim 33 , wherein a surface of the light passage section facing the light tunnel is curved convexly at least in the region of the bend.

49 . The headlight lens of claim 33 , wherein the length of the headlight lens, when viewed in the orientation of the optical axis of the light passage section amounts to no more than 7 cm.

50 . Vehicle headlight comprising at least a first light source and a headlight lens, the headlight lens including
a light passage section having at least one optically operative light exit face; and a light tunnel having at least one light entry face, the light tunnel transiting into the light passage section via a bend; wherein the light tunnel at the bend has a smaller cross section than the light passage section at the bend; and wherein the light passage section is configured for imaging the bend as a bright-dark-boundary by means of light irradiating from the light source into the light entry face.

51 . The vehicle headlight of claim 50 , wherein the bend is a curved transition

52 . The vehicle headlight of claim 51 , wherein the curved transition is curved in a vertical plane.

53 . The vehicle headlight of claim wherein the curved transition has a radius of curvature being no larger than 5 mm.

54 . The vehicle headlight of claim 51 , wherein the curved transition has a radius of curvature being no larger than 0.25 mm.

55 . The vehicle headlight of claim 51 , wherein the curved transition has a radius of curvature being no smaller than 50 mm.

56 . The vehicle headlight of claim 52 , wherein the curved transition has a radius of curvature being no larger than 5 mm.

57 . The vehicle headlight of claim 52 , wherein the curved transition has a radius of curvature being no larger than 0.25 mm.

58 . The vehicle headlight of claim 52 , wherein the curved transition has a radius of curvature being no smaller than 50 nm.

59 . The vehicle headlight of claim 52 , wherein the bend is additionally curved in a horizontal plane.

60 . The vehicle headlight of claim 51 , wherein the light entry face is inclined with respect to an optical axis of the light passage section.

61 . The vehicle headlight of claim 51 , wherein the light entry face is inclined with respect to an optical axis of the light passage section.

62 . The vehicle headlight of claim 50 , wherein the light tunnel comprises a region on its surface which corresponds essentially to a part of the surface of an ellipsoid.

63 . The vehicle headlight of claim 50 , the vehicle headlight further comprising a second light source for irradiating light into the headlight lens, wherein at least a second light source spatially separated from the first light source.

64 . The vehicle headlight of claim 63 , being configured that light irradiated by means of the second light source is irradiated above the light-dark-boundary.

65 . The vehicle headlight of claim 63 , the second light source being arranged between the light entry face and the light passage section.

66 . The vehicle headlight of claim 63 , wherein the second light source includes a laser.

67 . The vehicle headlight of claim 50 , wherein the first light source includes a laser.

68 . The vehicle headlight of claim 50 , wherein the first light source includes a plane luminous field.

69 . Headlight lens for a vehicle headlight, the headlight lens having:
a body of transparent material, the monolithic body including a light passage section having at least one optically operative light exit face; and a light tunnel having at least one light entry face, the light tunnel passing over into the light passage section via a curved transition, the curved transition having a radius of curvature of no more than 5 mm; wherein the light tunnel at the curved transition has a smaller cross section than the light passage section at the curved transition; and wherein the light passage section is configured for imaging the curved transition as a bright-dark-boundary.

70 . The headlight lens of claim 69 , wherein the light entry face is inclined with respect to an optical axis of the light passage section, and wherein the light tunnel comprises a region on its surface which corresponds essentially to a part of the surface of an ellipsoid.

71 . The headlight lens of claim 69 , wherein the light tunnel comprises a region on its surface wh

Assignees

• Docter Optics Se

Inventors

• Fedosik Dmitry
• Wintzer Wolfram

Classifications

• F21S41/663

  by switching light sources (by switching incandescent light sources F21S41/162) · CPC title

• F21S41/25

  Projection lenses · CPC title

• F21S41/24

  Light guides · CPC title

• F21S41/27

  Thick lenses · CPC title

• F21S41/265

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