LED lamps and LED driver circuits for the same
First Claim
1. An LED inspection lamp, comprising:
- a) a head section that contains at least one light emitting diode that emits radiation, and contains at least one concave reflector, wherein the at least one light emitting diode is aimed rearwards towards the at least one concave reflector for receiving and collimating a majority of the rearwardly directed radiation into a beam, and b) a handle section such that the lamp can be hand held, wherein the at least one light emitting diode produces radiation that is suitable for causing fluorescence of visibly fluorescent materials.
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Accused Products
Abstract
LED lamp has LEDs aimed rearwards with either a concave mirror to the rear of each LED, or one concave mirror to the rear of two or more LEDs, collecting the light from the LEDs to form a forward projecting beam. LEDs may be high power types that require heatsinking. LED lamp may have a lens forward of each LED to collimate the radiation produced by the LEDs into a beam, where at least one lens has at least one aspheric curved surface. LED lamp may have a transparent reflective optic to collimate the radiation produced by each LED into a beam. For an inspection lamp, the LEDs typically have a peak wavelength of 395 to 415 nanometers for seeing the area being irradiated but not so visible as to overwhelm fluorescence of fluorescent materials to be detected. Other wavelengths may be used. LED inspection lamp has a combination of LEDs of different wavelengths or a combination of at least one LED and at least one other light source such that the lamp produces radiation suitable for detection of materials to be detected and adequately illuminates the area being irradiated. LED lamp has LEDs that produce a beam of suitable radiation with a width of 10 degrees or less without additional optics. LED inspection lamp has head attached to a flexible member, with head serving as heatsink for one or more high power LEDs. Current regulator circuits are also disclosed.
79 Citations
18 Claims
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1. An LED inspection lamp, comprising:
- a) a head section that contains at least one light emitting diode that emits radiation, and contains at least one concave reflector, wherein the at least one light emitting diode is aimed rearwards towards the at least one concave reflector for receiving and collimating a majority of the rearwardly directed radiation into a beam, and b) a handle section such that the lamp can be hand held, wherein the at least one light emitting diode produces radiation that is suitable for causing fluorescence of visibly fluorescent materials.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An LED inspection lamp, comprising:
- at least one LED and a boost converter suitable for operating at least one LED in the lamp using a battery that has a voltage less than that required to operate the at least one LED, wherein the at least one LED produces radiation that is suitable for causing fluorescence of visibly fluorescent materials, and further comprising optical means to concentrate the radiation from the at least one LED into a collimated beam.
- View Dependent Claims (12, 13, 14, 15, 16)
- 17. An LED inspection lamp, comprising two or more LEDs that produce radiation that is suitable for causing fluorescence of fluorescent materials, and further comprising a transparent optic associated with each of the two or more LEDs to collimate the radiation into a beam, wherein the transparent optic uses total internal reflection for at least part of the collimation purposes.
Specification