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US 2006/0187653 A1Published application
LED illumination devices
OwnerMark Olssoninventor
Life of this patent
Estimating the term…
Abstract
A lens element has a curved surface mounted adjacent an LED for improving the light transmission efficiency and the dispersal pattern of radiation emitted by the LED.
Claims52
An illumination device, comprising:
- an LED;
- a lens element with a curved surface positioned opposite a light emitting surface of the LED;
- and
- a quantity of transparent material joining the lens element and light emitting surface of the LED.
1 more element
An illumination device, comprising:
- a substrate;
- a least one LED mounted on the substrate and having an exposed metal heat conduction surface;
- at least one aperture formed in the substrate adjacent to the exposed metal heat conduction surface of the diode;
- and
- a heat sink mounted in the aperture.
2 more elements
A method of fabricating an illumination device, comprising the steps of:
- removing a top section of an optically transparent cover of a high intensity LED and lens assembly leaving a remaining lower section having a height dimension less than about twice a longest dimension of a light emitting surface of the LED;
- and
- mounting a lens element on top of the lower section, the lens element having a curved surface that faces the light emitting surface of the LED.
An illumination device, comprising:
- a light emitting diode;
- a generally spherical lens mounted adjacent to a light emitting surface face of the light emitting diode and positioned no further away from the light emitting surface than twice the longest dimension of the light emitting surface;
- the spherical lens having an index of refraction relative to light emitted by the diode greater than about 1.65;
- the spherical lens having a diameter greater than three times the longest dimension of the light emitting surface;
- and
- a space between the spherical lens and the light emitting surface being filled with an intervening optically transparent material selected from the group consisting of fluid, grease, gel and elastomer having an index of refraction less than about 1.50.
3 more elements
An illumination device, comprising:
- a substrate;
- a light emitting diode having an exposed metal heat conduction surface mounted on the substrate;
- an aperture formed in the substrate adjacent to the metal heat conduction surface;
- and
- heat sink means extending through the aperture for dissipating heat from the exposed diode metal heat conduction surface.
2 more elements
An illumination device, comprising:
- a surface mounted light emitting diode with an exposed metal heat conduction surface;
- a heat sink;
- and
- a spring clamp for holding the metal heat conduction surface against the heat sink.
1 more element
A illuminated device, comprising:
- a light emitting diode;
- a generally spherical lens element mounted adjacent to a light emitting surface of the light emitting diode;
- the spherical lens element having an index of refraction relative to light emitted by the diode that is greater than about 1.65;
- and
- a side of the spherical lens element opposite the light emitting surface being in contact with an optically transparent material with an index of refraction greater than about 1.20.
2 more elements
An illumination device, comprising:
- a light emitting diode;
- a spherical lens element mounted adjacent a light emitting surface of the light emitting diode;
- the spherical lens element having an index of refraction relative to light emitted by the diode of greater than about 1.80;
- and
- a negative focal length optical element placed in front of the spherical lens element to form the light into a beam having a predetermined shape.
2 more elements
A method of constructing an illumination device, comprising the steps of:
- cutting off a section of an optically transparent cover that encapsulates a light emitting diode, leaving a remaining section above a light emitting surface of the diode no greater than twice the longest dimension of the light emitting surface;
- and
- mounting a generally spherical Cubic Zirconia lens element having an index of refraction relative to the diode emitted light greater than about 1.65, and having a diameter greater than about three times the longest dimension of the light emitting surface.
A method of controlling the output light pattern of a light emitting diode source, comprising the steps of:
- using a Cubic Zirconia spherical lens element to converge the light from a light emitting diode;
- and
- using a second diverging optical element to diverge the light by a predetermined amount.
An illumination device, comprising:
- a light emitting diode;
- a generally spherical lens element mounted adjacent a light emitting surface face of the light emitting diode and placed no further away from said light emitting surface than about twice the longest dimension of said light emitting surface;
- the spherical lens element having an index of refraction relative to light emitted by the diode of greater than about 1.80 to converge the light to a focus;
- the spherical lens element having a diameter greater than about three times the longest dimension of the light emitting surface;
- a light path optical space between the spherical lens element and the light emitting surface being filled with an intervening optically transparent material selected from the group consisting of fluid, grease, gel elastomer and rubber-like material having an index of refraction less than about 1.60;
- and
- an aperture placed approximately at a plane of focus smaller than a diameter of the spherical lens.
4 more elements
An illumination device, comprising:
- a light emitting diode;
- a generally spherical lens element mounted adjacent to a light emitting surface face the light emitting diode and placed no further away from the light emitting surface than about twice a longest dimension of the light emitting surface;
- the spherical lens element having an index of refraction relative to light emitted by the diode greater than about 1.80 to converge the light to a focus;
- the spherical lens element having a diameter greater than about three times the longest dimension of the light emitting surface;
- a light path optical space between the spherical lens element and the light emitting surface being filled with an intervening optically transparent material selected from the group consisting of fluid, grease, gel, elastomer or rubber-like material having an index of refraction less than about 1.60;
- and
- a spacer to set the distance between the spherical lens element and the light emitting surface to a predetermined distance.
4 more elements
Dependencies are inferred from the claim text.