Primary users must see the projector purchase the mistake of intensity - office supplies industry

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Many people have many misconceptions projection brightness, which directly affect the projector purchase. Today we come to the brightness of the projector to do some analysis of some misconceptions.





1. The higher the resolution, higher brightness
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Many consumers are often one-sided that the higher output resolution projector, the higher the brightness, the better the final output results, the more clear projection screen.





In fact, the projector's brightness level and the output resolution has nothing to do, it depends on the brightness of projector bulbs, projector internal optical system and the internal optics of reflection and transmission capacity. The output resolution of the projector is also connected by the output resolution computer display card limit, if the graphics card's output resolution even if the projector's resolution, low-index higher, the output effects are not very good.





2. Lumens brightness representatives





Brightness projector that is the energy projector light output size, and power projection bulb size and the size of the projected area, usually ANSI lumens brightness as the projection unit. Under this standard, many people believe that it represents lumens brightness.





Is not true, "lumen," said beam projection amount of the projection screen or projection units of time, the visual response to light radiation intensity of a capability. ANSI for projectors, "lm" and a unified computing standards, that projection resolution, field frequency, the color temperature, contrast and other parameters under certain conditions, Test The projection screen in the "field" shape of each cross-point illumination, and then multiplied by the projected area, calculate the average of all cross-point illumination, the projector is the lumen size.





3. The higher the brightness, projection screen more clearly





In theory, the greater the lumen value, the higher the brightness of the projector, projection screen should be more clear. From the actual effect, in a well-lit environment projection presentation projectors with high brightness than low indeed better than the brightness of the projector. However, this does not say that the higher the brightness, projection screen clearer.





In the actual projection process, the brightness of the projector with the size of a number of objective factors. For example, in projection resolution, field frequency, color temperature, contrast, under certain conditions and other factors, the clarity of projection screen, projector bulbs in addition to the power and size, but also by the size and projection screen, projection distance of direct relationship.





4. The same lumens, the same brightness





Was said, since the brightness of the projector unit is the lumen, then the same lumens projector value, they should also be given the same brightness ah!





Theory, this claim is correct. However, different brands of projector manufacturers, test brightness target environment is not the same, the final test of the lumen projector will not be exactly the same value.





Different brands, different models of projectors, using the size of the white window signals the existence of 10% to 25% of the error, the lumen value even if the same can not ensure the same brightness. Also, different brands of projection brightness, compared with the same luminance values, there is nothing comparable.