LED illumination module with fixed optic and variable emission pattern
First Claim
1. An LED light assembly comprising:
- a first beam forming optic and a second beam forming optic, each of said first and second beam forming optics having a focus, said foci intersected by a linear axis;
a first light emitting die and a second light emitting die, said first and second light emitting dies arranged to emit light into said first beam forming optic and said second beam forming optic, said first light emitting die emitting light of a first or second color and having an optical axis passing through the focus and said second light emitting die emitting light of the other of said first or second color and having an optical axis offset from the focus and intersecting said linear axis;
wherein said first light emitting die emits light of the first color into said first beam forming optic, said first light emitting die emits light of the second color into said second beam forming optic, and said light emitting dies emitting light of said first color are energized at the same time so that light of the first color is emitted at the focus of the first beam forming optic and offset from the focus of the second beam forming optic and said light emitting dies emitting light of said second color are energized at the same time so that light of the second color is emitted at the focus of the second beam forming optic and offset from the focus of the first beam forming optic.
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Accused Products
Abstract
An LED illumination module including an LED lamp with a plurality of light emitting dies on a substrate in combination with an optic having a single focus. The light emitting dies include a single center light emitting die centered on an optical axis and peripheral dies arranged around the center die. The illumination module includes a beam forming optic having a single focus arranged over the LED lamp with the focus on the optical axis of the center die. Light emitted from the center die is substantially collimated by the optic in a focused “spot” emission pattern. Light emitted from the peripheral dies results in a more dispersed or divergent “flood” emission pattern. The center die and peripheral dies are independently controlled and the power delivered to the dies can be varied independently to generate different light emission patterns using the same optic.
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Citations
11 Claims
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1. An LED light assembly comprising:
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a first beam forming optic and a second beam forming optic, each of said first and second beam forming optics having a focus, said foci intersected by a linear axis; a first light emitting die and a second light emitting die, said first and second light emitting dies arranged to emit light into said first beam forming optic and said second beam forming optic, said first light emitting die emitting light of a first or second color and having an optical axis passing through the focus and said second light emitting die emitting light of the other of said first or second color and having an optical axis offset from the focus and intersecting said linear axis; wherein said first light emitting die emits light of the first color into said first beam forming optic, said first light emitting die emits light of the second color into said second beam forming optic, and said light emitting dies emitting light of said first color are energized at the same time so that light of the first color is emitted at the focus of the first beam forming optic and offset from the focus of the second beam forming optic and said light emitting dies emitting light of said second color are energized at the same time so that light of the second color is emitted at the focus of the second beam forming optic and offset from the focus of the first beam forming optic. - View Dependent Claims (2, 3, 4, 7, 8, 9)
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5. A method of generating light emission patterns of different colors, said method comprising:
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providing a plurality of light generating modules, each said module comprising; an optic having a focus, said optic configured to collimate light emitted from said focus; a plurality of light emitting dies arranged to emit light into said optic, said plurality of light emitting dies including a first die emitting light of a first color or a second color having an area of light emission centered on the focus and at least one second die emitting light of the other of said first color or said second color having an area of light emission offset from the focus, arranging said plurality of light generating modules and said second die so that each focus of said plurality of light generating modules and the area of light emission of said second die are intersected by a linear axis; selecting the first die to emit light of the first color in a first pre-determined number of said plurality of light generating modules; and selecting the first die to emit light of the second color in a second pre-determined number of said plurality of light generating modules, wherein said plurality of light emitting dies of the first color are energized at the same time and said plurality of light emitting dies of the second color are energized at the same time. - View Dependent Claims (6, 10, 11)
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Specification