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An article lets you understand the projector. Don't buy it wrong!

  • 2021-11-02

A few days ago, I suddenly wanted to build a home theater by myself on a whim. After all, it was not very difficult. Projector + 3D film source + Video output equipment (set-top box, computer, etc.) + audio. But when purchasing, I found that the purchase of the projector was not that simple. If I didn't know the parameters of the projector equipment, I might buy the unsatisfactory equipment. After all kinds of common sense tutoring, it can be said that I have a certain understanding of the projector, so now, in order to avoid every reader taking a detour, I will simply explain the important indicators of the projector one by one, and buy your favorite projector equipment.

Projection size
The projection size is proportional to the projection distance. You can choose according to the size of your room and the size you expect to project.


Screen ratio
A projector can support the mainstream ratio, for example: 4:3/16:9.
After all, you feel uncomfortable when you think about watching a 16:9 movie at a ratio of 4:3.


Brightness
Refers to the light energy output by the projector, in lumens (lm).
A physical quantity related to light output is brightness, which refers to the ratio of the light energy emitted by the light on the screen surface to the screen area. The commonly used unit of brightness is "lx" (lx,1lx = 1lm/m2). When the light output by the projector passes through a certain amount, the larger the projection area is, the lower the brightness is; Otherwise, the higher the brightness is
The brightness of the projector should be moderate. Too bright or too dark will make the eyes tired and damaged.

Contrast
Contrast refers to the measurement of different brightness levels between the brightest white and the darkest black in the bright and dark area of an image. The larger the Difference range is, the larger the contrast is. The smaller the Difference range is, the smaller the contrast is, A good ratio of 120:1 can easily display vivid and rich colors. When the ratio is as high as 300:1, colors of all levels can be supported.

Resolution
There are too many things involved in the resolution, which may be boring to say. Simply put, the higher the resolution, the better.


Number of colors

This is also the bigger the better, the color is enough, the displayed image color is rich enough.


Projector application environment related indicators
Home cinema type: its characteristic is that the brightness is around 2000 lumens (with the development of projection, the number is increasing and the contrast ratio is relatively high), and the width-height ratio of the projected picture is mostly 16:9. All kinds of video ports are complete, suitable for playing movies and high-definition televisions, and suitable for home users.
Educational Conference-type projector: it is generally positioned in school and enterprise applications, with mainstream resolution, brightness of about 2000-3000 lumens, moderate weight, good heat dissipation and dust prevention, it is suitable for installation and short-distance movement. It has rich functions and interfaces, is easy to maintain, and has a relatively high performance-price ratio. It is suitable for mass purchase and popularization.


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    If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.