light valve

light valve

[′līt‚valv]
(electronics)
A device whose light transmission can be made to vary in accordance with an externally applied electrical quantity, such as volatage, current, electric field, or magnetic field, or an electron beam.
Any direct-view electronic display optimized for reflecting or transmitting an image with an independent collimated light source for projection purposes.
References in periodicals archive ?
ABB will supply several critical elements including an HVDC Light valve, wall bushings, transformer components, high-voltage capacitors and power semiconductor devices.
The first medical device to make it past the initial research stage has been the X-ray light valve, a component to make mammography more cost-effective.
The body and engine of the sports car consist of light valve, TV screen, CD/DVD.
Unable to use regular liquid crystal projectors because of artifact occurrence, developers pioneered an optically addressable light valve that consists of a single, large pixel.
PI's Michael Page combined a Hughes Image Light Amplifier (ILA, or light valve) and other commercial imaging technologies to create a proprietary system that produces rapid, high-resolution holographic recordings of digital image data such as video, medical tools and CAD.
Tiny liquid crystal molecules are sandwiched between the two polarizers, and these crystals can be switched by tiny transistors to act as light valves. Manipulating each light valve, or pixel, lets a certain amount of the backlight escape.
The new devices are a 15[micro]m SiGe micromirror and a grating light valve for high-resolution displays.
Scientific and technical award: Gunnar P Michelson, developer of an advanced electronic light valve for machines that strike movie prints.
Some companies turn the brightness level on their CRT and light valve projectors up to the maximum, then measure only a 10% screen area.
Tenders are invited for Furniture and Light Valve Systems for Space Education / Library
Perhaps the most notable is the "Deformable Grating Light Valve" (DGLV), a MEMS-based grating invented by Olav Solgaard and his colleagues at Stanford Univ., Calif., in 1992.
His investigations and discussions with Tom Cvetkovich lead him ultimately to the image light amplifier (ILA or light valve) developed by Dr Bleha at Hughes in the 1980s.