ANSI lumens brightness of the projector and the resolution ISO lumens

 The current brightness of the projector industry, mainly for two, including ISO ANSI lumens and lumens. ISO (the International Organization for standardiztion) The Chinese name is International Organization for Standardization, ISO is set up to achieve international standardization organization, ISO members through the exchange of technical activities to develop international standards for the international community. ISO/IEC21118: 2005 (E) document provides a variety of standards on the projector, including the brightness of the projector testing standards, standards of technical terms, noise measurement, etc. ... ...

projector with Japan the increase in brand sales in the world, particularly the high share of the Chinese market, and the face of the middle class home in the adopted the

in the ISO21118 standard is also currently before the projector with the brightness of the most standard ANSI (American National Standards Institute is the meaning of American National Standards Institute). Since the early projector mainly produced in the United States and Europe, such as 3M, BARCO, etc., but only their production bases in Japan, so the projector is in the early United States, people have gradually become accustomed to this nominal method, currently the most are using ANSI standards.

projector brightness: unit is lumens. Said projector unit is the flux of international standards ANSI lumens, ANSI lumens is the American National Standards Institute to develop a method of measuring flux projector, determination of the following: 1) the distance between projector and screen: 2.4 meters. 2) The screen is 60 inches. 3) metering pen measuring screen 4) Find the average of 9 points luminance is the ANSI lumens.


ANSI lumens brightness of the projector and the ISO lumens resolution

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comparison of brightness: LCD projector is transmissive projection, by increased light efficiency and reduce energy loss optical components to improve the LCD panel and the installation of micro-lens aperture ratio and other technical means to improve the brightness. DLP projection technology is reflective, the main color wheel through improved technology, changing the angle and reduce the optical microscope and other means to increase the brightness loss indicators. With the projector product development, the manufacturers continue to introduce a higher brightness projectors, projector 2000ANSI lumens brightness has reached more than most. Because of various brands of projectors determination of the different, although the same ANSI lumens, but the actual brightness difference.

projector brightness and users in the test, and the distance from the screen projector and screen angle and screen indicator has a lot to gain. Differences between products of different brightness mainly in image clarity, color, sharpness Ming, Department of light and dark gray level, that is, products with high brightness of the image clearer, the color of the next higher sharpness, light and dark gray-scale performance is more complete. Application for a general text, differences in brightness of the image is not obvious. Different vendors set up for the difference in brightness adjustment is relatively large, most of the products in the range of brightness adjustment display can be clear and complete picture, and some products in more than 90% brightness adjustment, the screen goes blank for such a high brightness Obviously the practical application of the user of any practical significance.

projector brightness and screen options: the brightness of the projector to the screen on the product output light intensity is the brightness of the projected image. In general, the higher the brightness of the projector, projected onto the screen the brighter the image the same size, the more clear image. But the human eye can perceive the brightness of the image depend not only on the brightness of the projector with the ambient light intensity, the size of the image have a great relationship. The stronger the ambient light, the human eye perception of the relative brightness of the image the more bleak. So the user must use the projector according to their environmental conditions select the appropriate brightness, the brighter is not necessarily better. The same as in the case of other indicators, the higher the brightness, the projector will be higher prices, while the human eye will perceive a certain range of image brightness over this range, the human eye will feel uncomfortable, especially for a long time high brightness makes image viewing eye fatigue and cause some damage.

need to remind users that, in addition to the user to select the brightness according to the size of index space, we must also consider the use of environmental lighting conditions, screen type and other factors. The same brightness, different environments and different lighting conditions will produce different types of screen display. Users select the projector products, the brightness indicator to have a redundancy. Because the brightness of the projector depends largely on the projector lamp, lamp light output will decay with the use of time, will definitely lead to a decline in brightness of the projector. Projectors in use after 2000 hours, brightness decay quickly, so the user in the choice of projector product, be sure to have a comprehensive indicator of the intensity consideration.

Generally speaking, in 40-50 meters of the home or meeting room, projector lumens brightness recommended to choose between 1000-1500, the corresponding selection screen 100 inch to 120 inches; 60-100 square meters The small conference room or a standard classroom, projector lumens brightness recommended to choose between 3000-4000, the corresponding selection screen 120 inch to 150 inches; in the 120-200 square meters of medium-sized conference rooms and lecture theater, the projector 4000 lumens brightness recommended to choose above, select the 150-inch screen corresponding to 200 inches; 300 square meters in the large conference room or auditorium, the projector 5000 lumens to select more than most of the professional engineering machines, the 200-inch screen is all over.