The concept of parsing projection brightness from fraudulence to reliability

In the past few years of the projector industry, the brightness standard has not been very reliable. However, with the gradual standardization of the industry over the past few years, the issue of ambiguity in brightness is not so prominent. But now there are still some brands that have just entered the industry packaging their own brightness. Today we will analyze the concept of projector brightness and the evolution of the concept of brand package brightness. Brightness Units: The brightness of a Lumens projector is nominally measured using lumens. Lumen is the physical unit that describes the luminous flux. In the projector test, the illuminance meter is generally used to test the illuminance of the projector first, and then the illuminance value is multiplied by the area to obtain the brightness of the projector. Therefore, it can be simply understood that the lumen is equal to the illumination multiplied by the area. The unit of lumen is lumen, and the unit of illumination is Lux.
In general, the brightness of home projectors is basically within 2,000 lumens, the brightness is too high and the color is not good tuning. The brightness of commercial projectors is generally between 3,000 lumens and 5000 lumens. The engineering projector is basically above 6000 lumens. There are many home projectors on Taobao, and the brightness is 8000 lumens, which is impossible. The brightness of the project projector reaches 6000 lumens, and the price is basically above 10,000 yuan. However, the product with a few hundred yuan on Taobao cannot have this brightness at all.
ANSI brightness First of all, let's say the word "ANSI". Like many other “standard” English labels in many industries, ANSI is actually an acronym for a series of English words. It is called the American National Standards Institute, the American National Standards Institute, and was established in 1918.
ANSI brightness is not a unit. It is actually a test method developed by the American National Standards Institute and widely accepted by the projector industry. The essence of this is the brightness measured when the color and contrast of the projector are both good. However, the projector industry generally uses peak brightness for marking. The peak brightness, in fact, the projector contrast and color performance are not very good, and even some products under the peak brightness of a pure white screen.
Viewing brightness is similar to ANSI brightness. Now some manufacturers have introduced the concept of "Viewing brightness." In fact, it is a brightness parameter that the user can feel most comfortable when watching a movie normally, and the picture color seen is also an optimal state. In fact, this brightness and ANSI brightness are similar. It's just better understanding.
The light source brightness is not very reliable and some brands have introduced light source brightness. This concept is more troubling. From the light source to the projection screen, it usually takes more than a dozen steps to process, and each processing step will cause the brightness to drop, and the end user actually sees the screen brightness may only reach about 30% of the light source brightness, or even lower. So in fact the size of the light source brightness is not significant to the user. It can be said that the brightness of the light source is a bit tricky.
The brightness of the projector industry has been serious for several years. However, over the past few years, with the deeper understanding of consumers on products, the industry's standard for brightness has begun to regulate. Although we still use the peak brightness to mark, but ANSI brightness can be maintained at 80% level. It is believed that the brightness specification of the projector industry will develop in a good direction.

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