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Elite Screens' Blog Team
2017/02/21,

Elite Screens' Blog Team

Terminology

Definition

Acoustic Transparence The ability for sound to penetrate a material (in this case, a projector screen) with an acceptably low level of  attenuation.
ALR Acronym for Ambient Light Rejecting
Ambient Light Any atmospheric light from sources other than the projector and its screen image.
Ambient Light Rejecting A specialty projection screen material filters out ambient light from the projected imagery.  This material does so by either absorbing incident light signals or redirecting it away from the viewer's field of vision.
Angular Reflective A type of High Gain and/or ALR  screen material that reflects projected light at a mirror opposite angle to that of the angle of incidence.
Angular Serriform Microstructure Microscopic "saw-tooth" reflective structures that are angled for use as a Ceiling Light Rejecting projector screen. (Also see "Serriform Microstructure")
ANSI  Acronym for American National Standards Institute.
ANSI Lumens An SI derived unit of luminous flux equal to the light emitted in a unit solid angle by a uniform point source of one candle intensity. Or (1 candela * sr) Symbol = lm as established by the ANSI.
Aspect Ratio The actual shape of a projection screen determined by a set of  corresponding width to height measured in equal units.  In other words, a screen that measures 4 units of width by 3 equal units of corresponding height, has a 4:3 aspect ratio. Or if there are 16 unts of width to every 9 units of height, the aspect ratio is 16:9.
AT Acronym for "Acoustically Transparent"

Backlighting

Any light originating from an ambient light source behind the projector screen.  This includes LED light kits attached to the backside of a screen's framework or even projected light penetrating a thin screen material and reflecting off the wall, visibly  illuminating that which is  behind the screen material.
Bandwidth The range of frequency measured in a particular device's transmission capability.  An example is how video is expressed in MHz (or measure of frequency cyles in the thousands per second.)
Ceiling Light Rejecting A specialized material's ability to reject the washout effects of overhead lighting.
CLR  Acronym for Ceiling Light Rejecting
Color Gamut The full RGB color range that a particular device (like a projector) is capable of.
Color Resolution The number of colors available from a device that is measured in bits per pixel.
Color Saturation Is the measurement of the various levels of intensity in image color.  The higher the saturation, the more vivid a particular color is.  The lower the color  level, the more gray the image becomes. (see grayscale)
Color Temperature  Color temperature is a feature of  visible light measurement used in various “light-related” industries from  lighting and photography, to video and all light-related sciences.  It is measured in Kelvin (K) temperature units.  “Cool colors” blues-whites are measured above 5000 K.  Lower temperature measurements of 2700-300 K produce “warm colors” ranging from yellows to reds.
Contrast Ratio Contrast is the perceptible differences of color luminescence that allows the human eye to determine patterns and textures in a visible image.  Dynamic Range plays a role in this process by intermingling with color saturation enabling individuals to perceive a myriad of different color shades.
Certified Technology Specialist A process hosted by InfoComm International that certifies Audio-Visual technology specialists based on the exacting requirements of posessing intricate knowledge of the AV industry.
CTS Acronym for Certified Technology Specialist