Illumination adjusting device, illumination system using the same and illumination adjusting method
First Claim
1. An illumination adjusting device for receiving power from a power supply and supplying output voltage to a lighting unit, comprising:
- a selector for realizing a plurality of selections comprising a plurality of predetermined illumination intensity ranges, and generating a corresponding level signal according to a selection of a predetermined illumination intensity range;
a detector for detecting ambient illumination intensity and generating an ambient illumination value according to the ambient illumination intensity;
a comparator for comparing the ambient illumination value with a predetermined value of the selection of the predetermined illumination intensity range, the comparator outputting a first power signal when the ambient illumination value is lower than [a]the predetermined value of the selection of the predetermined illumination intensity range; and
an adjustor for outputting a corresponding output voltage to the lighting unit in response to the level signal from the selector, and adjusting the output voltage according to the first power signal, wherein light emitted by the lighting unit is controlled within a predetermined illumination intensity range.
1 Assignment
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Accused Products
Abstract
An illumination adjusting device for receiving power from a power supply and supplying output voltage to a lighting unit is provided herein. The illumination adjusting device includes a detector for detecting ambient illumination intensity and generating an ambient illumination value according to the ambient illumination intensity; a comparator for comparing the ambient illumination value with a predetermined value, the comparator outputting a first power signal when the ambient illumination value is lower than a predetermined value; an adjustor for adjusting the output voltage according to the first power signal, as a result, light emitted by the lighting unit is controlled within a predetermined illumination intensity range. A related illumination adjusting method is also provided.
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Citations
20 Claims
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1. An illumination adjusting device for receiving power from a power supply and supplying output voltage to a lighting unit, comprising:
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a selector for realizing a plurality of selections comprising a plurality of predetermined illumination intensity ranges, and generating a corresponding level signal according to a selection of a predetermined illumination intensity range; a detector for detecting ambient illumination intensity and generating an ambient illumination value according to the ambient illumination intensity; a comparator for comparing the ambient illumination value with a predetermined value of the selection of the predetermined illumination intensity range, the comparator outputting a first power signal when the ambient illumination value is lower than [a]the predetermined value of the selection of the predetermined illumination intensity range; and an adjustor for outputting a corresponding output voltage to the lighting unit in response to the level signal from the selector, and adjusting the output voltage according to the first power signal, wherein light emitted by the lighting unit is controlled within a predetermined illumination intensity range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An illumination adjusting method for receiving power from a power supply and supplying output voltage to a lighting unit, comprising:
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realizing a plurality of selections comprising a plurality of predetermined illumination intensity ranges; generating a corresponding level signal according to a selection of a predetermined illumination intensity range; outputting a corresponding output voltage to the lighting unit in response to the level signal from the selector; detecting ambient illumination intensity; generating an ambient illumination value according to the ambient illumination intensity; comparing the ambient illumination value with a predetermined value of the selection of the predetermined illumination intensity range; outputting a first power signal if the ambient illumination value is lower than a predetermined value of the selection of the predetermined illumination intensity range; and adjusting the output voltage according to the first power signal so as to keep the light emitted by the lighting unit being controlled within a predetermined illumination intensity range. - View Dependent Claims (11, 12)
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13. An illumination system capable of adjusting illumination intensity according to ambient illumination intensity, comprising:
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a lighting unit; and an illumination adjusting device electrically connected to the lighting unit, for obtaining output voltage from a power supply to power the lighting unit, wherein the illumination adjusting device comprises; a selector for realizing a plurality of selections comprising a plurality of predetermined illumination intensity ranges, and generating a corresponding level signal according to a selection of a predetermined illumination intensity range; a detector for detecting ambient illumination intensity and generating an ambient illumination value according to the ambient illumination intensity; a comparator for comparing the ambient illumination value with a predetermined value of the selection of the predetermined illumination intensity range, the comparator outputting a first power signal when the ambient illumination value is lower than the predetermined value of the selection of the predetermined illumination intensity range; and an adjustor for outputting a corresponding output voltage to the lighting unit in response to the level signal from the selector, and adjusting the output voltage according to the first power signal, whereby illumination intensity of the lighting unit is adjusted. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification