FAQ

Lumen - The lumen (symbol: lm) is the SI derived unit of luminous flux, a measure of the power of light perceived by the human eye.

ANSI Lumen - The light output of projectors (including video projectors) is typically measured in lumens. A standardized procedure for testing projectors has been established by the American National Standards Institute, which involves averaging together several measurements taken at different
positions.

Contrast Ratio - is a property of a display system, defined as the ratio of the luminance of the brightest color (white) to that of the darkest color (black) that the system is capable of producing. A high contrast ratio is a desired aspect of any display.

DLP - Digital Light Processing is a trademark of Texas Instruments and it is the main technology nowadays behind video projectors and rear projection TVs.

3LCD projector - 3LCD technology is one of the 2 most popular technologies on the market today (the otherone being DLP). Since 2009 3LCD projectors are about 50% of the market worldwide. 3LCD means that there are 3 LCD panels one for each primary colors Red, Green and Blue (RGB).

LCoS - Liquid crystal on silicon (LCoS or LCOS) is a
"micro-projection" or "micro-display" technology typically applied in projection televisions. It is a reflective technology similar to DLP projectors; however, it uses liquid crystals instead of individual mirrors. Nowadays Sony, JVC и Mitsubishi with it's new HC9000D 3D projector.

SVGA - 800x600, Super Video Graphics Array

XGA - 1024x768, 4:3 aspect ratio, eXtended Graphics Array.

WXGA - 1280x768, 5:3(15:9) aspect ratio, Widescreen eXtended Graphics Array.

SXGA+ - 1040x1050, Super eXtended Graphics Array Plus.

HD - shorthand name for resolution of 1280×720

Full HD - shorthand name for resolution of 1920х1080.

1080p - "p" stands for progressive scan. Progressive (or noninterlaced scanning) is a way of displaying, storing, or transmitting moving images in which all the lines of each frame are drawn in sequence. This is in contrast to the interlacing used in traditional television systems where only the odd lines, then the even lines of each frame (each image called a field) are drawn alternately.

1080i - "i" stands for interlaced scan. Interlaced scan refers to one of two common methods for "painting" a video image on an electronic display screen (the other being progressive scan) by scanning or displaying each line or row of pixels. This technique uses two fields to create a frame. One field contains all the odd lines in the image, the other contains all the even lines of the image.

Aspect Ratio - The aspect ratio of an image is the

ratio of the width of the image to its height, expressed as two numbers separated by a colon. That is, for an x:y aspect ratio, no matter how big or small the image is.

HDMI - (High-Definition Multimedia Interface) is a compact audio/video interface for transmitting uncompressed digital data.HDMI connects digital audio/video sources (such as set-top boxes, DVD players, HD DVD players, Blu-ray Disc players, AVCHD camcorders, personal computers (PCs), video game consoles such as the PlayStation 3 and Xbox 360, and AV receivers) to compatible digital audio devices, computer monitors, video projectors, and digital televisions.

Component video is a video signal that has been split into two or more component channels. In popular use, it refers to a type of component analog video (CAV) information that is transmitted or stored as three separate signals. Component video can be contrasted with composite video (NTSC, PAL or SECAM) in which all the video information is combined into a single line-level signal that is used in analog television. Like composite, component-video cables do not carry audio and are often paired with audio cables.

Lens Shift - motorized horizontal and vertical movement of the lens of a projector. Feature more common for the premium models.