Light color tunability
First Claim
Patent Images
1. A component comprising:
- an input for receiving input power from a power supply,an output for supplying a driving voltage to a lighting device, andamplitude control means for adjusting the amplitude of the driving voltage in accordance with color point information;
wherein the amplitude control means adjust the amplitude of the positive half wave and/or the amplitude of the negative half wave of the driving voltage in accordance with the color point information;
wherein the amplitude control means reduce the amplitude of at least one half wave of the driving voltage between 1% and 10% of the maximum amplitude.
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Accused Products
Abstract
The application relates to setting color point and light intensity. By controlling the phase as well as the amplitudes of a driving voltage for a lighting device, the color point as well as the light intensity of a lighting device may be set.
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Citations
29 Claims
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1. A component comprising:
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an input for receiving input power from a power supply, an output for supplying a driving voltage to a lighting device, and amplitude control means for adjusting the amplitude of the driving voltage in accordance with color point information; wherein the amplitude control means adjust the amplitude of the positive half wave and/or the amplitude of the negative half wave of the driving voltage in accordance with the color point information; wherein the amplitude control means reduce the amplitude of at least one half wave of the driving voltage between 1% and 10% of the maximum amplitude. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A component comprising:
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a driver for driving a lighting device, an input for receiving a driving voltage for driving the lighting device, and amplitude determination means for determining the amplitude of the driving voltage and setting the driver to set the light color point of the lighting device accordingly; further comprising phase determination means for determining the phase of the driving voltage and setting the driver to set the light intensity of the lighting device accordingly; wherein the phase determination means determine a cut off phase of at least one half wave of the driving voltage. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A component comprising:
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an input for receiving input power from a power supply, an output for supplying a driving voltage to a lighting device, and amplitude control means for adjusting the amplitude of the driving voltage in accordance with color point information; wherein the amplitude control means adjust the amplitude of the driving voltage such that a difference between the absolute value of a high level and the absolute value of a low level is in accordance with the color point information.
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24. A component comprising:
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an input for receiving input power from a power supply, an output for supplying a driving voltage to a lighting device, and amplitude control means for adjusting the amplitude of the driving voltage in accordance with color point information; wherein the amplitude control means adjust the amplitude of the driving voltage such that a difference between the positive half wave amplitude and the negative half wave amplitude is in accordance with the color point information.
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25. A component comprising:
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a driver for driving a lighting device, an input for receiving a driving voltage for driving the lighting device, and amplitude determination means for determining the amplitude of the driving voltage and setting the driver to set the light color point of the lighting device accordingly; wherein the amplitude determination means determine a difference between the absolute value of a high level and the absolute value of a low level of the driving voltage. - View Dependent Claims (26)
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27. A component comprising:
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a driver for driving a lighting device, an input for receiving a driving voltage for driving the lighting device, and amplitude determination means for determining the amplitude of the driving voltage and setting the driver to set the light color point of the lighting device accordingly; wherein the driver changes a power ratio between at least two lighting devices having different colors in accordance with the color point information from the amplitude determination means.
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28. A component comprising:
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a driver for driving a lighting device, an input for receiving a driving voltage for driving the lighting device, and amplitude determination means for determining the amplitude of the driving voltage and setting the driver to set the light color point of the lighting device accordingly; wherein the amplitude determination means apply a hysteresis for determining the amplitude of the driving voltage. - View Dependent Claims (29)
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Specification