SWITCHING CONVERTER FOR LIGHTING WITH LIGHT INTENSITY AS FEEDBACK AND LIGHT EMITTING APPARATUS USING THE SAME
First Claim
1. A switching converter for lighting with light intensity as feedback, comprising:
- a conversion circuit capable of converting an operating electric signal to generate an output electric signal;
a feedback circuit including a light detecting element capable of detecting an external light to generate a feedback signal; and
a control circuit capable of receiving the feedback signal, and comparing the received feedback signal with a reference electric signal, and controlling the conversion circuit based on comparison results to adjust the output electric signal.
1 Assignment
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Accused Products
Abstract
A light emitting apparatus comprises a light emitting element and a switching converter comprising a conversion circuit for converting an operating electric signal to generate the driving electric signal, a feedback circuit having a light detecting element for detecting a luminous intensity of the light emitting element and generating a feedback signal, and a control circuit for receiving the feedback signal, comparing the received feedback signal with a reference electric signal, and controlling the conversion circuit based on comparison results to adjust the driving electric signal. Alternatively, the light detecting element detects ambient light and the control circuit controls the conversion circuit based on comparison results to stop or enable outputting of the driving electric signal.
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Citations
17 Claims
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1. A switching converter for lighting with light intensity as feedback, comprising:
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a conversion circuit capable of converting an operating electric signal to generate an output electric signal; a feedback circuit including a light detecting element capable of detecting an external light to generate a feedback signal; and a control circuit capable of receiving the feedback signal, and comparing the received feedback signal with a reference electric signal, and controlling the conversion circuit based on comparison results to adjust the output electric signal. - View Dependent Claims (2, 3, 4, 5)
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6. A light emitting apparatus, comprising:
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a light emitting element capable of receiving a driving electric signal to thereby emit light; and a switching converter comprising; a conversion circuit capable of converting an operating electric signal to generate the driving electric signal; a feedback circuit including a light detecting element capable of detecting a luminous intensity of light emitted from the light emitting element and generating a feedback signal; and a control circuit capable of receiving the feedback signal, and comparing the received feedback signal with a reference electric signal, and controlling the conversion circuit based on comparison results to adjust the driving electric signal. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A light emitting apparatus, comprising:
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a light emitting element capable of receiving a driving electric signal to thereby emit light beams; a switching converter comprising; a conversion circuit capable of converting an operating electric signal to generate the driving electric signal; a feedback circuit including a light detecting element capable of detecting a luminous intensity of ambient light and generating a feedback signal; and a control circuit capable of receiving the feedback signal, and comparing the received feedback signal with a reference electric signal, and controlling the conversion circuit based on comparison results to stop or enable outputting of the driving electric signal. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification