LED illumination module
First Claim
1. An LED illumination module provided with a light-emitting diode as well as with a rotationally symmetrical, one-piece, light-transparent adapter lens with an inner converging lens part and an outer reflector partwherein a rearwardly open blind hole is defined by a frustoconical or conical side surface with an arcuate shape and by a convex base surface and has an inner diameter allowing for longitudinal movement of the LED body along the optical axis of the adapter lens within the hole,wherein the converging lens part is formed by the convex base surface as a light incidence region and by a front light output surface that is also convex, andwherein the reflector part is essentially formed by the side surface of the hole as another light incidence region, by an outer annular surface that reflects all light inward and a front, frustoconical, light output surface,wherein all the light incidence regions and output surfaces refract the light rays with diagonal incidence angle such that the light emitted by the LED is more than 85% emitted to the front and that, by movement of the LED along the longitudinal axis, a light cone modification of a light cone with a cone angle of ≦
- 12°
up to a cone angle of ≧
20°
can be generated and wherein in at least one position of the LED relative to the hole of the adapter lens an inner section of the light cone over a cross section surface perpendicular to the optical axis is homogeneously illuminated.
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0 Petitions
Accused Products
Abstract
An LED illumination module has a light-emitting diode and a rotationally symmetrical, one-piece, light-transparent adapter lens centered on a lens axis. This lens has an axially rearwardly open blind hole defined by a radially inwardly directed frustoconical light-receiving side surface and an axially rearwardly directed convex light-receiving base surface. The diode is axially shiftable in the hole. An axially forwardly directed convex light-output surface is coaxially surrounded by an axially forwardly directed and forwardly flaring frustoconical light-output surface. A radially outwardly directed and radially inwardly reflective surface extends generally from a front edge of the axially forwardly directed frustoconical light-output surface to a rear edge of the radially inwardly directed frustoconical surface.
54 Citations
15 Claims
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1. An LED illumination module provided with a light-emitting diode as well as with a rotationally symmetrical, one-piece, light-transparent adapter lens with an inner converging lens part and an outer reflector part
wherein a rearwardly open blind hole is defined by a frustoconical or conical side surface with an arcuate shape and by a convex base surface and has an inner diameter allowing for longitudinal movement of the LED body along the optical axis of the adapter lens within the hole, wherein the converging lens part is formed by the convex base surface as a light incidence region and by a front light output surface that is also convex, and wherein the reflector part is essentially formed by the side surface of the hole as another light incidence region, by an outer annular surface that reflects all light inward and a front, frustoconical, light output surface, wherein all the light incidence regions and output surfaces refract the light rays with diagonal incidence angle such that the light emitted by the LED is more than 85% emitted to the front and that, by movement of the LED along the longitudinal axis, a light cone modification of a light cone with a cone angle of ≦ - 12°
up to a cone angle of ≧
20°
can be generated and wherein in at least one position of the LED relative to the hole of the adapter lens an inner section of the light cone over a cross section surface perpendicular to the optical axis is homogeneously illuminated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- 12°
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14. An LED illumination module comprising a light-emitting diode and a rotationally symmetrical, one-piece, light-transparent adapter lens centered on a lens axis, the lens being formed with
an axially rearwardly open blind hole centered on the axis and defined by a radially inwardly directed frustoconical light-receiving side surface and an axially rearwardly directed convex light-receiving base surface, the hole receiving the light-emitting diode and having an inner diameter allowing for axial movement of the light-emitting diode in the hole, an axially forwardly directed convex light-output surface centered on the axis, an axially forwardly directed and forwardly flaring frustoconical light-output surface coaxially surrounding the convex surface, and a radially outwardly directed and radially inwardly reflective surface extending generally from a front edge of the axially forwardly directed frustoconical light-output surface to a rear edge of the radially inwardly directed frustoconical surface.
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15. An LED illumination module provided with a light-emitting diode as well as with a rotationally symmetrical, one-piece, light-transparent adapter lens with an inner converging lens part and an outer reflector part
wherein a rearwardly open blind hole is defined by a frustoconical or conical side surface with an arcuate shape and by a convex base surface and has an inner diameter allowing for longitudinal movement of the LED body along the optical axis of the adapter lens within the hole, wherein the converging lens part is formed by the convex base surface as a light incidence region and by a front light output surface that is also convex, and wherein the reflector part is essentially formed by the side surface of the hole as another light incidence region, by an outer annular surface that reflects all light inward and a front, frustoconical, light output surface, wherein all the light incidence regions and output surfaces refract the light rays with diagonal incidence angle such that the light emitted by the LED is more than 85% emitted to the front and that, by movement of the LED along the longitudinal axis, a light cone modification of a light cone with a cone angle of ≦ - 12°
up to a cone angle of ≧
20°
can be generated and wherein in at least one position of the LED relative to the hole of the adapter lens an inner section of the light cone over a cross section surface perpendicular to the optical axis is homogeneously illuminated, andwherein a tilt angle of the reflector part is set relative to a perpendicular to the optical axis is between 35° and
40°
.
- 12°
Specification
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- Resources
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Current AssigneeZweibruder Optoelectronics GmbH & Co. KG
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Original AssigneeZweibruder Optoelectronics
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InventorsOpolka, Rainer, Timinger, Andreas
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Primary Examiner(s)Ton; Anabel
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Assistant Examiner(s)Shallenberger; Julie A.
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Application NumberUS11/662,309Publication NumberTime in Patent Office949 DaysField of Search362/543, 362/545, 362/308, 362331-335, 362/339, 362/340, 362498-499, 359726-728US Class Current362/545CPC Class CodesF21L 4/00 Electric lighting devices w...F21L 4/027 the light sources being a LEDF21V 13/045 for portable lighting devicesF21V 5/045 the lens having discontinuo...F21V 7/0091 using total internal reflec...F21Y 2115/10 Light-emitting diodes [LED]
