Solid state lighting devices and methods of manufacturing the same
First Claim
1. A method of making a lighting device, said method comprising:
- measuring a first color output of a lighting device while supplying a first string initial current to a first string of solid state lighting devices, a second string initial current to a second string of solid state lighting devices and a third string initial current to a third string of solid state lighting devices,said lighting device comprising at least said first string of solid state lighting devices, said second string of solid state lighting devices, said third string of solid state lighting devices and a power line,adjusting the current supplied to at least one of said first string of solid state lighting devices, said second string of solid state lighting devices and said third string of solid state lighting devices such that a first string final current is supplied to said first string of solid state lighting devices, a second string final current is supplied to said second string of solid state lighting devices and a third string final current is supplied to said third string of solid state lighting devices;
permanently setting said first string of solid state lighting devices, such that if any line voltage is supplied to said power line, said first string final current will be supplied to said first string of solid state lighting devices;
permanently setting said second string of solid state lighting devices, such that if any line voltage is supplied to said power line, said second string final current will be supplied to said second string of solid state lighting devices.
2 Assignments
0 Petitions
Accused Products
Abstract
Lighting devices comprising first, second and third strings of solid state lighting devices. One aspect further comprises means for supplying first fixed current through the first string, means for supplying second fixed current through the second string, and means for supplying current through the third string. In a second aspect, the first and second strings emit light within a specific area on a 1931 CIE Chromaticity Diagram, and the third string emits light of dominant wavelength 600-640 nm. A third aspect further comprises a power line and a power supply configured to supply a first and second fixed currents through the first and second strings, respectively, and supply a current to the third string. A method of making a lighting device, comprising measuring color output, adjusting current to first, second and/or third strings, and permanently setting currents to the first and second strings.
127 Citations
20 Claims
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1. A method of making a lighting device, said method comprising:
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measuring a first color output of a lighting device while supplying a first string initial current to a first string of solid state lighting devices, a second string initial current to a second string of solid state lighting devices and a third string initial current to a third string of solid state lighting devices, said lighting device comprising at least said first string of solid state lighting devices, said second string of solid state lighting devices, said third string of solid state lighting devices and a power line, adjusting the current supplied to at least one of said first string of solid state lighting devices, said second string of solid state lighting devices and said third string of solid state lighting devices such that a first string final current is supplied to said first string of solid state lighting devices, a second string final current is supplied to said second string of solid state lighting devices and a third string final current is supplied to said third string of solid state lighting devices; permanently setting said first string of solid state lighting devices, such that if any line voltage is supplied to said power line, said first string final current will be supplied to said first string of solid state lighting devices; permanently setting said second string of solid state lighting devices, such that if any line voltage is supplied to said power line, said second string final current will be supplied to said second string of solid state lighting devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of making a lighting device, said method comprising:
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measuring a first color output of a lighting device while supplying a first string initial current to a first string of solid state lighting devices and a second string initial current to a second string of solid state lighting devices, said lighting device comprising at least said first string of solid state lighting devices and said second string of solid state lighting devices, adjusting the current supplied to at least one of said first string of solid state lighting devices and said second string of solid state lighting devices such that a first string final current is supplied to said first string of solid state lighting devices and a second string final current is supplied to said second string of solid state lighting devices; and permanently setting said first string of solid state lighting devices, such that if any line voltage is supplied to the first string of solid state lighting devices, said first string final current will be supplied to the first string of solid state lighting devices. - View Dependent Claims (17, 18)
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19. A method of tuning a lighting device to provide a desired color output having u′
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coordinates within a target range on a 1976 CIE Chromaticity Diagram, the lighting device comprising a first string and a second string of solid state lighting devices, both of said first and second strings comprising at least one solid state lighting device which emits light having x, y color coordinates which define a point which is within an area on a 1931 CIE Chromaticity Diagram, and a third string of solid state lighting devices comprising at least one solid state lighting device, the method comprising;(1) measuring a color output of the lighting device while supplying a first string initial current to said first string of solid state lighting devices, a second string initial current to said second string of solid state lighting devices and a third string initial current to said third string of solid state lighting devices; (2) comparing the color output to said target range; (3) adjusting the current supplied to at least one of the first string of solid state light emitters, the second string of solid state light emitters and the third string of solid state light emitters to bring the color output within said target range, such that a first string final current is supplied to the first string of solid state light emitters, a second string final current is supplied to the second string of solid state light emitters and a third string final current is supplied to the third string of solid state light emitters; and (4) permanently setting a current supplied to the first string of solid state lighting devices, such that if any line voltage is supplied to the first string of solid state lighting devices, said first string final current will be supplied to the first string of solid state lighting devices, and permanently setting a current supplied to the second string of solid state lighting devices, such that if any line voltage is supplied to the second string of solid state lighting devices, said second string final current will be supplied to the second string of solid state lighting devices. - View Dependent Claims (20)
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Specification