LIGHT EMITTING DIODE LINEAR LIGHT FOR MACHINE VISION
First Claim
1. A lighting apparatus for producing a high intensity line of light, said lighting apparatus comprising:
- an elongated support member having formed thereon a linear array of regularly spaced LED modules each of which comprises one or more LED emitting areas having a predetermined spectral output that is emitted over a predetermined solid angle;
an array of spaced apart non-imaging concentrators the individual non-imaging concentrators of which are optically coupled in one-to-one correspondence with said regularly spaced LED modules, each non-imaging concentrator in said array of non-imaging concentrators having entrance and exit apertures and operating to collect radiation emitted by each of said LED modules and to re-emit substantially all of said collected radiation as a diverging beam having a solid angle smaller than said predetermined solid angle over which radiation is emitted by each of said LED modules where said diverging beam is spatially and spectrally uniform in the near field of said exit aperture and propagates in a direction along an optical axis of said apparatus with controlled angular divergence in mutually orthogonal planes; and
an elongated cylindrical lens positioned to receive radiation emerging from said exit apertures and converge it to a bright line of light forward of said apparatus.
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Accused Products
Abstract
The invention herein comprises a linear lighting system which incorporates light emitting diode (LED) light sources with one or more distinct colors including broad band white light. The LED die or die arrays are mounted to a high thermal conductivity circuit board comprising COB technology which can include both the LED die and electronic drive components resulting in a more compact and reliable design with improved thermal and optical performance at lower cost. In conjunction with high efficiency imaging collection optics and aberration corrected cylindrical optics, the output of the LED sources are imaged to a bright line suitable for use in machine vision applications and the like.
52 Citations
18 Claims
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1. A lighting apparatus for producing a high intensity line of light, said lighting apparatus comprising:
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an elongated support member having formed thereon a linear array of regularly spaced LED modules each of which comprises one or more LED emitting areas having a predetermined spectral output that is emitted over a predetermined solid angle; an array of spaced apart non-imaging concentrators the individual non-imaging concentrators of which are optically coupled in one-to-one correspondence with said regularly spaced LED modules, each non-imaging concentrator in said array of non-imaging concentrators having entrance and exit apertures and operating to collect radiation emitted by each of said LED modules and to re-emit substantially all of said collected radiation as a diverging beam having a solid angle smaller than said predetermined solid angle over which radiation is emitted by each of said LED modules where said diverging beam is spatially and spectrally uniform in the near field of said exit aperture and propagates in a direction along an optical axis of said apparatus with controlled angular divergence in mutually orthogonal planes; and an elongated cylindrical lens positioned to receive radiation emerging from said exit apertures and converge it to a bright line of light forward of said apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification