Projector terminology
ANSI lumens
The main performance indicators of the projector, the unit of measurement for the brightness, the U.S. National Bureau of Standards lumens display device has a standard, this a standard measurement of brightness is usually ANSI Lumens. In general, the higher the lumens, the brighter the projector more upscale. The measurement screen brightness of the projected image: the image of one square meter were divided into nine in, measuring the value of each central point of light, and then calculated the average of nine.
CRT tube focus performance
CRT projector decomposition to the input source signal R (red), G (green), B (blue) under high pressure on the phosphor screen of three CRT tubes, light emitting, via a signal amplifier and a converging, shown on a large screen a color image. The focus of the CRT tube is divided into electrostatic focusing magnetic focusing and electromagnetic composite focus three, electromagnetic composite focusing more common, it is to focus performance, high focus accuracy can partition focus and corner focus, clear projection screen .
High pressure mercury lamp
A light source for generating a liquid crystal projector, the original lamp followed by a voltage, the high potential difference at the same time to generate heat, the mercury vaporized mercury vapor in a high potential difference, by the excitation discharge is generated between the pole pitch, the internal halogen element, there is the function of the catalytic and protection; its advantages as a light-emitting brightness, long life, LCD projectors currently on the market most of the ultra-high pressure mercury lamp.
The main performance indicators of the projector, the unit of measurement for the brightness, the U.S. National Bureau of Standards lumens display device has a standard, this a standard measurement of brightness is usually ANSI Lumens. In general, the higher the lumens, the brighter the projector more upscale. The measurement screen brightness of the projected image: the image of one square meter were divided into nine in, measuring the value of each central point of light, and then calculated the average of nine.
CRT tube focus performance
CRT projector decomposition to the input source signal R (red), G (green), B (blue) under high pressure on the phosphor screen of three CRT tubes, light emitting, via a signal amplifier and a converging, shown on a large screen a color image. The focus of the CRT tube is divided into electrostatic focusing magnetic focusing and electromagnetic composite focus three, electromagnetic composite focusing more common, it is to focus performance, high focus accuracy can partition focus and corner focus, clear projection screen .
High pressure mercury lamp
A light source for generating a liquid crystal projector, the original lamp followed by a voltage, the high potential difference at the same time to generate heat, the mercury vaporized mercury vapor in a high potential difference, by the excitation discharge is generated between the pole pitch, the internal halogen element, there is the function of the catalytic and protection; its advantages as a light-emitting brightness, long life, LCD projectors currently on the market most of the ultra-high pressure mercury lamp.
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