What does the effect of the projector have to do with it?

The screen as a multi-** teaching terminal supporting display equipment, more and more attention by users, because LCD or DLP projectors are expensive, and its brightness or resolution is increased by one level, its ** increase is very obvious, in order to make the performance of the projection equipment give full play, must be a good "horse" with a good "saddle", and "saddle" is just on the screen, the perfect combination of economy and applicability, which is a more professional and rational embodiment of the user.

The user's ** picture effect is mainly based on the following three aspects:

1. Factors affecting the brightness of the picture (screen):

1. Projector brightness.

2. The gain ratio of the curtain surface.

3. Ambient brightness.

2. Factors affecting the uniformity of the picture (screen):

1. The optical system of the projector itself.

2. The field of view of the screen.

3. Factors affecting the clarity of the picture (screen):

1. The resolution of the projector itself.

2. The clarity of the screen.

The gain ratio (which affects the brightness of the picture) and the field of view angle (which affects the uniformity of the picture) of the screen are a pair of contradictions, and the higher the gain ratio, the smaller the field of view. With the significant increase in the brightness of the projector (now generally above 1500lm), the configuration of the average user is now as follows:

1. When LCD and DLP are below 1000LM: glass bead screen to make up for the lack of brightness.

3. When LCD and DLP are above 2500LM: the white plastic screen is the most ideal, and the brightness and uniformity are the best.

The glass bead screen is to make up for the original projection equipment (LCD, DLP) The brightness is not high, so with the improvement of LCD, DLP brightness, the shortcomings of the glass bead screen are becoming more and more prominent, such as: not cleanable, the center is too bright, the uniformity is poor (that is, caused by the small field of view), and the white plastic and ** screen are supporting products to meet the requirements of the development of a new generation of projector products.

When choosing the same screen surface, the physical properties of the screen should be considered in combination with the economic strength: for example, the Senpu screen has the characteristics of flame retardancy, mildew resistance, no discoloration, no peculiar smell, no deformation, etc., because the middle layer of the Terli curtain is a glass fiber structure, so as to ensure that the screen is not deformed in a humid environment, and has the characteristics of flame retardant.

1.Projector brand, price.

2.Brightness, contrast, resolution of the projector.

3.In terms of hardware, the projector has several projection technologies: LCD DLP 3LCD DLA4Audio-visual environment: projection screen, ambient light, projection distance, focus, film source, Blu-ray machine, cable ......

There are too many to check out some forums when you have time.

Disadvantages: 1. The wattage of most of the bulbs used in DLP machines is low, but the brightness is high, so the bulbs are in the state of high-load cluster rolling. Prone to problems.

Second, the overall structure of the DLP machine is simpler, the dust is easy to inhale, and the machine as a whole is easy to be dirty. The heat dissipation is not very good.

Third, the working principle of DLP machine DMD reflection imaging, the quality of DMD is really poor now, some machines start in two years, and it still depends on luck when you buy it.

Fourth, the DLP machine is the color wheel color preparation pants, if there is a problem with the color wheel, the color is not normal, or the machine is not turned on directly.

The issues I mentioned above are all business machines. The engineering machine is still better than I said. After all, the design principle is not the same.

Can it be connected to a mobile phone** and what is the maximum size?