Grating Light Valve

What Does Grating Light Valve Mean?

A grating light valve (GLV) is an optical technology used in producing a projection with the aid of a dynamically adjustable diffraction grating. This adjustable grating is a subcategory of light valve technology, which is used in a number of types of projectors.


Techopedia Explains Grating Light Valve

Grating light valve is a result of the technological evolution of micro-opto-electro-mechanical structures (MOEMS) that are responsible for the combination of mechanical, electrical and optical components on a microscopic level. A GLV functions by using six ribbons representing diffraction gratings for each pixel value. An electronic beam that falls on the surface of the glass turns the value of a pixel on or off, which controls whether or not the ribbon pixel reflects the light. Pixels obtained from GLV can be in digital or analogue mode with ribbon deflection values between zero and one-fourth the size of the wavelength.


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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…