These lamps also have the ability to produce an extremely large amount of light within a small area current projectors average about 2,000 to 15,000 American National Standards Institute (ANSI) lumens. Metal-halide lamps are used because they output an ideal color temperature and a broad spectrum of color. The combination of open and closed pixels can produce a wide range of colors and shades in the projected image. As polarized light passes through the panels (combination of polarizer, LCD panel and analyzer), individual pixels can be opened to allow light to pass or closed to block the light.
Lcd projektor verleih series#
To display images, LCD (liquid-crystal display) projectors typically send light from a metal-halide lamp through a prism or series of dichroic filters that separates light to three polysilicon panels – one each for the red, green and blue components of the video signal. It is a modern equivalent of the slide projector or overhead projector. Clear, bright colours could be lost.An LCD projector is a type of video projector for displaying video, images or computer data on a screen or other flat surface. A white spot in the picture can appear rather blueish or blackish. What can easily happen with a beamer: when trying to balance the ambient light by stronger brightness, but still creating a strong contrast, the colours might be displayed quite divergently. With 12,000 ANSI Lumen, the beamer shown in the picture is already pretty bright compared to other beamers that only manage a couple hundred ANSI Lumen. In the event industry, beamers from 12,000 to 15,000 ANSI Lumen are standard. ANSI Lumen therefore means that the beamer was tested on its conformity with the ANSI standards ( source).
The name ANSI Lumen is composed of “ANSI”, hence the “American National Standards Institute” and the term “Lumen”, a photometrical unit for the luminous flux. Here, a different unit is used in order to express the light output. As an example, you can see a beamer of a luminosity of 12,000 ANSI Lumen in the picture. There is a variety of beamers with different brightness levels. The beamer projects onto a white surface, like this the picture becomes visible. The beamer works with a different basic principle. Depending on the daylight situation, their brightness is strong enough for that. It happens occasionally that our Indoor walls are used outdoors. Like this, the walls offer enough room to change the luminosity upwards as well as downwards. Most of the time, only 40-50% of the overall luminosity need to be exhausted. In the areas where deep black is supposed to be shown, the LEDs stay switched off.įrom our customers’ experiences we can say: our LED walls are well equipped with 1200 nits, even to shine bright enough when there is ambient light in the room. This causes contrasts that are easily created. The surface that shows the image shines actively. LED walls have their own light source: the LEDs (read more about it here). Thus, 1200 nits have the luminosity of 1200 candles. wax candle), however, is equivalent to the luminosity of a normal candle ( source). It is a unit for luminance and can be equated with a “candela per square meter” ( source). But what exactly is a “nit”? The word is derived from Latin “nitere”, which means “to shine”. Our indoor walls have a luminosity of ca. We can answer this question with a simple “yes”. Our customers often ask us if our LED walls are bright enough for indoor use.
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