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What is the principle behind the operation of a light attenuator? 


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The principle behind the operation of a light attenuator involves controlling the intensity of light through various mechanisms. Different types of light attenuators utilize phenomena like diffraction, absorption, and reflection to achieve this control. Some attenuators are based on the progressive decrease of transmitted light intensity through multiple vitreous reflections, while others involve switching doped semiconductor layers between transmissive and absorptive states by applying electric voltage. Additionally, there are attenuators that regulate light using components like collimators, linear displacement sensors, and signal processing units, offering a wide attenuation range at a low cost. These devices are designed to maintain high efficiency in applications like solar cell processing and automotive light attenuation.

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The light attenuator operates by switching doped semiconductor layers with induced charge carriers when an electric voltage is applied, transitioning between a transmissive and absorptive state for specific wavelengths.
The light attenuation device uses a method of heating illumination to process crystalline silicon solar cells, solving electrical performance attenuation without damaging other cell functions, maintaining high efficiency.
Patent
Yu Xinwen, Lin Xiaolong 
16 Jul 2014
1 Citations
The light attenuator operates by adjusting the position of an attenuation pin using a screw rod and linear displacement sensor to regulate the amount of light passing through, enabling precise light control.
The principle behind a light attenuator operation is the progressive decrease in transmitted light intensity through multiple glass reflections, controlled by the angle of incidence on the glass slides.

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