METHODS AND APPARATUS FOR GENERATING WHITE LIGHT
First Claim
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1. An apparatus for generating essentially white light, comprising:
- at least one first white LED characterized by a first spectrum having a first color temperature, the at least one first white LED including a first phosphor, the at least one first white LED generating at least one first wavelength that is converted by the first phosphor to provide the first spectrum; and
at least one second white LED characterized by a second spectrum having a second color temperature, the at least one second white LED including a second phosphor, the at least one second white LED generating at least one second wavelength that is converted by the second phosphor to provide the second spectrum, wherein the first color temperature and the second color temperature are perceivably different to a human observer.
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Abstract
Methods and apparatus for generating essentially white light. In one example, a white light generating apparatus comprises at least one first white LED characterized by a first spectrum, and at least one second white LED characterized by a second spectrum, wherein the first spectrum is substantially different than the second spectrum.
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Citations
40 Claims
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1. An apparatus for generating essentially white light, comprising:
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at least one first white LED characterized by a first spectrum having a first color temperature, the at least one first white LED including a first phosphor, the at least one first white LED generating at least one first wavelength that is converted by the first phosphor to provide the first spectrum; and
at least one second white LED characterized by a second spectrum having a second color temperature, the at least one second white LED including a second phosphor, the at least one second white LED generating at least one second wavelength that is converted by the second phosphor to provide the second spectrum, wherein the first color temperature and the second color temperature are perceivably different to a human observer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A method for generating essentially white light, comprising:
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generating first radiation from at least one first white LED, the first radiation characterized by a first spectrum having a first color temperature, the at least one first white LED including a first phosphor, the at least one first white LED generating at least one first wavelength that is converted by the first phosphor to provide the first spectrum;
generating second radiation from at least one second white LED, the second radiation characterized by a second spectrum having a second color temperature, the at least one second white LED including a second phosphor, the at least one second white LED generating at least one second wavelength that is converted by the second phosphor to provide the second spectrum, wherein the first color temperature and the second color temperature are perceivably different to a human observer; and
combining the first radiation and the second radiation to form a light output. - View Dependent Claims (39, 40)
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Specification