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Method and apparatus for detecting presence of dimmer and controlling power delivered to solid state lighting load

A technology of solid-state lighting and phase-cut dimmers, applied in lighting devices, light sources, electric light sources, etc.

Inactive Publication Date: 2015-06-17
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, problems arise when working with other types of electronic lamps, including compact fluorescent lamps (CFLs), low-voltage halogen lamps such as LEDs and OLEDs that use electronic transformers, and solid-state lighting (SSL) lamps

Method used

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  • Method and apparatus for detecting presence of dimmer and controlling power delivered to solid state lighting load
  • Method and apparatus for detecting presence of dimmer and controlling power delivered to solid state lighting load
  • Method and apparatus for detecting presence of dimmer and controlling power delivered to solid state lighting load

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Embodiment Construction

[0029] In the following description, for purposes of explanation and not limitation, representative embodiments disclosing specific details are set forth in order to provide a thorough understanding of the present teachings. However, it will be apparent to persons of ordinary skill in the art having the benefit of this disclosure that other embodiments in accordance with the present teachings that depart from the specific details disclosed herein are still within the scope of the appended claims. Also, descriptions of well-known apparatus and methods may be omitted so as not to obscure the description of representative embodiments. Such methods and apparatus are clearly within the scope of the present teachings.

[0030] Applicants have recognized and appreciated that it would be beneficial to provide circuitry capable of detecting the presence of a dimmer in a lighting system and compensating for power loss when a dimmer is present. In general, the same amount of light outpu...

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Abstract

A system and method control an amount of power delivered by a power converter (220) to a solid state lighting load (240). It is determined whether a dimmer (204) is present between a voltage source (201) and the power converter (220) based on a rectified input voltage from the voltage source. When the dimmer is determined to be present, an operating point of the power converter is adjusted to increase the amount of power delivered by the power converter to the solid state lighting load by a compensation amount, so that the increased amount of power is equal to an amount of power delivered by the power converter when the dimmer is not present.

Description

technical field [0001] The present invention is generally directed to the control of solid state lighting fixtures. More specifically, various inventive methods and apparatus disclosed herein relate to digitally detecting the presence of a dimmer in a solid state lighting system, and correcting for power loss when the dimmer is present. Background technique [0002] Digital or solid-state lighting technology (ie, lighting based on semiconductor light sources such as light-emitting diodes (LEDs)) offers a viable alternative to traditional fluorescent, HID, and incandescent lamps. Functional advantages and benefits of LEDs include high energy conversion and optical efficiency, durability, low operating costs, and the like. Recent advances in LED technology have provided efficient and robust full-spectrum lighting sources that enable a variety of lighting effects in many applications. Some fixtures implementing these sources feature a lighting module that includes one or more...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B39/08H05B44/00
CPCH05B39/08H05B45/37H05B47/10
Inventor M·达塔G·卡姆普贝尔
Owner SIGNIFY HLDG BV