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Color Light Output
Color Light Output (CLO), also known as Color Brightness, is a specification that provides information on a projector’s ability to reproduce color. Color Light Output is specified in the lumen unit and measures a color projection system's ability to correctly reproduce color brightness. Objective The Color Light Output specification provides projector buyers the advantage of a standard, objective metric with which to make product comparisons and selections. Projector manufacturers generally provide information about resolution, white light brightness and contrast ratio as descriptors of projector performance. However, none of these specifications directly covered a projector’s color performance. The Color Light Output metric complements existing specifications to give buyers an accurate way to evaluate competing projector models more thoroughly. Background In 2009, the National Institute of Standards and Technology The National Institute of Standards and Technology (NIST) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lumen (unit)
The lumen (symbol: lm) is the SI unit of luminous flux, which quantifies the perceived power of visible light emitted by a source. Luminous flux differs from power (radiant flux), which encompasses all electromagnetic waves emitted, including non-visible ones such as thermal radiation (infrared). By contrast, luminous flux is weighted according to a model (a " luminosity function") of the human eye's sensitivity to various wavelengths; this weighting is standardized by the CIE and ISO. The lumen is defined as equivalent to one candela-steradian (symbol cd·sr): : 1 lm = 1 cd·sr. A full sphere has a solid angle of 4π steradians (≈ 12.56637 sr), so an isotropic light source (that uniformly radiates in all directions) with a luminous intensity of one candela has a total luminous flux of :. One lux is one lumen per square metre. Explanation If a light source emits one candela of luminous intensity uniformly across a solid angle of one steradian, the total luminous flux e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Institute Of Standards And Technology
The National Institute of Standards and Technology (NIST) is an agency of the United States Department of Commerce whose mission is to promote American innovation and industrial competitiveness. NIST's activities are organized into Outline of physical science, physical science laboratory programs that include Nanotechnology, nanoscale science and technology, engineering, information technology, neutron research, material measurement, and physical measurement. From 1901 to 1988, the agency was named the National Bureau of Standards. History Background The Articles of Confederation, ratified by the colonies in 1781, provided: The United States in Congress assembled shall also have the sole and exclusive right and power of regulating the alloy and value of coin struck by their own authority, or by that of the respective states—fixing the standards of weights and measures throughout the United States. Article 1, section 8, of the Constitution of the United States, ratified i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Society For Information Display
The Society for Information Display (SID) is an industry organization for displays, generally electronic displays such as televisions and computer monitors. SID was founded in September 1962. Its main activities are publishing technical journals and running "Display Week", its main conference, held in May or June each year. SID publications include the ''Journal of the Society for Information Display'', published monthly, the ''Digest of Technical Papers'' from SID's annual conference, ''Information Display'' magazine, proceedings from other conferences such as the Vehicle Displays and Interfaces Symposium, Asia Display, and International Display Workshops. In addition, local chapters in the Americas, Europe, and throughout Asia have meetings frequently, including lectures by display technologists, and are sometimes offered as webcasts. The SID Board of Directors grants several SID awards based upon outstanding achievements and significant contributions. History In early 1960s, IR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VESA
VESA (), formally known as Video Electronics Standards Association, is an American standards organization, technical standards organization for computer display standards. The organization was incorporated in California in July 1989To retrieve the information, search for Entity Number C1645094. and has its office in San Jose, California, San Jose. It claims a membership of over 300 companies. In November 1988, NEC, NEC Home Electronics announced its creation of the association to develop and promote a Super VGA computer display standard as a successor to IBM's proprietary software, proprietary Video Graphics Array (VGA) display standard. Super VGA enabled graphics display resolutions up to 800×600 pixels, compared to VGA's maximum resolution of 640×480 pixels—a 56% increase. The organization has since issued several additional standards related to computer video displays. Widely used VESA standards include High-dynamic-range video#VESA DisplayHDR, DisplayHDR, DisplayPort, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optoelectronics
Optoelectronics (or optronics) is the study and application of electronic devices and systems that find, detect and control light, usually considered a sub-field of photonics. In this context, ''light'' often includes invisible forms of radiation such as gamma rays, X-rays, ultraviolet and infrared, in addition to visible light. Optoelectronic devices are electrical-to-optical or optical-to-electrical transducers, or instruments that use such devices in their operation. '' Electro-optics'' is often erroneously used as a synonym, but is a wider branch of physics that concerns all interactions between light and electric fields, regardless of whether they form part of an electronic device. Optoelectronics is based on the quantum mechanical effects of light on electronic materials, especially semiconductors, sometimes in the presence of electric fields. * Photoelectric or photovoltaic effect, used in: ** photodiodes (including solar cells) ** phototransistors ** photomult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
