Why do movie theaters use projectors?
Author:Wang Jie Time:2021-10-01 14:41 Browse(768)
After looking at the answers to the questions, we basically got to the point, which is the reason for the cost. The most understandable example is that the price of the 100 inch Sony TV z9d is 490000 yuan, while the price of the 100 inch Jimi laser TV A1 is 25999 yuan. People can see that the price difference between the two is not several times. With the increase of LCD screen size, the cost increases geometrically. The IMAX screen size of cinema standard is 22 meters wide and 16 meters high. If you use LCD screen, you can imagine the cost. Although the small space led, seamless LCD and other large screen display technology has been mature, and in many commercial scenarios/
After looking at the answers in the question, we basically got to the point, which is the cost.
the most understandable example.
the price of the 100 inch Sony TV z9d is 490000 yuan, while the price of the 100 inch Jimi laser TV A1 is 25999 yuan, which can be seen by many people, The price difference between the two is no longer several times the difference.

Why do movie theaters use projectors?

with the increase of LCD screen size,
the cost increases geometrically, while the standard IMAX screen size of cinema is 22 meters wide and 16 meters high. If LCD screen is used, the cost can be imagined.
although the large screen display technology such as small spacing LED has matured and is used in many commercial scenarios, For example, billboards and concert screens are built, but the cost of using them is still high, and neither the power consumption nor the maintenance cost can meet the basic requirements of the cinema to balance revenue and expenditure.

so is the cost the only reason to limit the cinema to adopt projection? It's not true.
there are also many hard indicators that limit the choice of cinemas.

resolution: for small spacing LEDs,
higher pixel density means that the difficulty of stability design increases geometrically, with pixel spacing reduced by 50% and backplane density increased by 4 times, Therefore, it is difficult to further improve the resolution of small spacing LEDs.
at present, cinemas have basically reached the 2K level.
therefore, the definition of small spacing LEDs can not meet the cinema standard.



? 1? 3 refresh rate: the refresh rate of projection can reach the level of 60-240hz.
most liquid crystals are at the level of 60-120hz. Although theoretically everyone has exceeded the resolution limit of human eye, the LCD screen will change because of the distance between moving elements in the screen,It can cause delay and superposition of pictures.
therefore, it has no problem in outdoor large screen advertising or on stage, and it has been widely used at present. However, if it is used in cinemas, the viewing experience will decline because of picture tailing and frame dropping, especially for movies with a lot of high-speed motion such as speed and passion.


? 1? 3. Optical pollution and visual comfort: liquid crystal, small spacing led and projection can provide large screen display.
however, due to their different principles, there are many differences.
liquid crystal usually has the problems of glare and high-frequency blue light; Small spacing LED has the problems of too bright and high frequency blue light.
and the projection in brightness is more suitable for indoor long-time viewing, compared with the first two, it is the most comfortable.
especially in the dark environment of the cinema.
the brightness of liquid crystal and small spacing LED is too high, the light and dark contrast is too large, and the damage to human eyes is greater.


? 1? Three defects: point defects refer to the possible bad spots in our mobile phones.
or TVs. Due to the uncertain factors in the production process, LCD and small spacing LEDs are more likely to have bad spots, bright spots and dark spots, especially with the reduction of pixel spacing, The control difficulty increases geometrically.
due to the inherent technical characteristics of projection, it is almost difficult to see some defects, which is more in line with the cinema's requirements for stable picture quality.



? 1? However, with the continuous development of technology.
it is not impossible for cinemas to adopt LED screens in the future. For example, this year, Wanda cinema, Wujiaochang, Shanghai, launched China's first Samsung cinema led cinema.
this year, Wanda cinema, Wujiaochang, ShanghaiIn this year's ces.
Samsung also specially demonstrated the microled modular TV designed for cinemas, which has greatly improved the resolution, durability and efficiency, including luminous efficiency, light source life and power consumption, but it may take quite a long time for its popularity.



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