How to choose a projection screen?

[Home Theater Network HDAV.com.cn] The curtain looks like a very low-tech thing, a curtain, a motor casing or an aluminum alloy frame, is it? Taobao has two or three hundred remote control electric screens. A lot, but I told you that those are inferior goods.

Cheap curtains, generally with pungent non-environmental paint, don't think that the smell on the screen is normal! A little better with odorless paint; or with ultra-thin aluminum steel shell, some Some products in the local area we like ultra-thin, but it is not too thin here; or the motor uses a brand-name synchronous motor, or everyone still does not know the difference between the motor and the synchronous motor and the tubular motor, this does not blame you, I used to do not know. Or come and go to the curtain is not a glass bead is white plastic fiberglass, please, we should not stare at the low-end products of these decades or 20 years ago.

Let me talk about the point of view of my choice of curtains. There are a lot of words, and the words are a bit awkward, but the guarantees are all original words, please do not reprint!

Let me talk about the problems that many people care about. How much better than the white wall?

According to my opinion, as long as the flatness is higher than the white wall, it is better than the white wall, regardless of the price. Of course, the first problem is that some cheap electric screens may not be flatter than your home white wall; the second problem is that the price of the same curtain may be 10 times different (different brands), especially the low-end curtain I think ( White plastic fiberglass these), so this question is not good.

Why do you only say flatness? Because in my opinion, even the lowest-end screen, such as white plastic, for the display of the picture, color reproduction, perspective, black position, these are better than your home paint. The wall is better.

structure

The structure of the curtain can be divided into three types: electric screen, picture frame screen and mobile screen. There are many different types of actual methods, and the types of curtains are very wide. I will only talk about households here, that is, they are basically limited to between electric curtains and frame curtains.

Pull wire electric screen

What kind of screen is the electric screen and the picture frame? It is estimated that some people have been entangled, but in fact this problem is quite easy to solve.

Generally speaking, the electric screen is used in the living room environment. That is to say, most people have LCD TVs in the living room, but occasionally they want to use a large screen to watch movies, so they can only choose the electric curtain to hang on the TV wall. When you need it, cover it down and cover the LCD TV. If you don't need it, you will go up. In this case, basically all use electric curtains.

If you have a separate audio-visual room, or at least have a free wall, you can hang the picture frame, you will usually choose the picture frame. Because the picture frame is more cost-effective and flatter than the electric screen.

Picture frame

To put it simply, it is the condition that the frame is drawn, and the frame is drawn. There is no way to choose the electric screen.

Picture frame addendum

1. About the width of the border

Depending on the brand, the width of the border is also different, but it is mainly divided into two types: ordinary wide side and ultra narrow side.

The ordinary wide side, there are 6cm, 8cm, 10cm, the ultra-narrow side is about 1-1.5cm, which is different.

As shown above, the left five are ordinary wide borders, and the far right one is a narrow border. You can see that the narrow border has inner and outer double-layer structure, which is why the narrow border is more expensive than the wide border. One of the reasons.

What width is used, the first one is aesthetics. For example, a 100-inch frame with a 10cm border, the scale looks a bit strange, or in the living room environment, hanging non-narrow paintings The frame will also look weird, of course, this is still everyone's favorite. The second is the size issue. There is a limit to the strength of aluminum. For example, a 200-inch frame with a 6cm frame may be a bit overhanging (but no one does not).

Electric curtain supplement

1. What is the pull screen, what are the benefits?

The pull-line screen is a thread on each side of the curtain that passes through the protruding ears and acts to flatten the screen. The reason for the existence of the pull screen is to make the screen, especially the soft curtain, smoother, wrinkle-free, and not curled.

Because the production process is increased, some raw materials are consumed, so the pull screen is more expensive than the non-wire pull screen, and the electric screen housing is longer.

2. How is the electric screen divided?

The price of the electric screen is mainly determined by several factors:

a) size ratio

b) Shell material

c) the motor used

d) other technologies (such as cushioning and noise reduction structure)

e) the screen used

f) R&D costs are spread evenly

g) Brand premium

Because it is written in detail, it is definitely a big topic. Here is just an outline. In short, the content of the electric screen is not simple, two or three hundred cottage products can be summarized.

proportion

The common ratio is generally 4:3, 16:9 and 2.35:1, but 4:3 is used in commercial or educational occasions, 2.35:1, there is no projector support, so the household category, 99% are used 16:9.

Want to maximize the display size with full screen? Just watch movies? You can choose 2.35:1, but if the projector does not support it, you have to buy a anamorphic lens, but the cost is much higher, and almost no one does.

Curtain

What is the use of this screen, this is the most important problem of choosing the Projection Screen. I will also elaborate on this point, but do not put it in the data, try to use the popular language.

First of all, you must first point out a common misunderstanding:

you get what you pay for

Different screens, the price varies widely, the same 100-inch, glass beads and Fresnel's price is more than 10 times worse. But this does not mean that the curtain of yours must be better than the cheap one. The key is the following sentence:

See what occasion you use

As a person in the industry, dealers who often do home theaters come to me and ask me how much money you have in your home. In the lofty spirit of thinking for others, I will not quote him directly because I know that he is mainly engaged in home theater projects, and the home theater rarely uses metal screens. He may just not understand, only think of metal curtains. The gain is high, just want to give high-end customers such a match, no. We have to analyze the real needs of our customers, not expensive.

I don't plan to analyze them one by one. One is a lot of dizziness, and the other is usually not so much. I will talk about the most common ones. I will mention it later. To show my knowledge is still very profound.

Before talking about it, let me talk about some important parameters of the curtain:

Gain

Gain official explanation please Baidu, simply said the brightness of the screen. But the high gain is achieved by sacrificing the angle of view. You can understand it as a high-gain screen, and the light that hits the two sides is gathered into the eyes of the middle viewer, so the middle looks very bright, but when you stand by, the picture will Very dark, that is, the angle of view is small.

The ancient Projectors had low brightness and had to use high-gain screens to improve the picture (such as the bead curtain). The actual picture was gray and white, and the contrast was unsightly, but it was not chosen at that time.

Now that the projector is different, under normal circumstances, we choose the soft white screen with 1.0 gain, which is the best picture. The higher the gain, the worse the picture and the worse the angle of view.

Perspective

The perspective is as the name suggests, it is negatively related to the gain, the angle of view is large, and the gain is small. More to say no benefit.

Resolution

It is the delicate degree of the picture. In fact, the curtain does not have this statement. It is the projector's statement, but each screen brand will use this as a propaganda gimmick, HD, 4k, 8k, or even 16k. . .

For the sake of me, I don’t say this, because for most people, as long as the projector is the same, because of the difference in the resolution of the screen, there is no way to distinguish it. Of course, you can hear the words of water or thermal power enthusiasts, when I did not say.

Common types of curtains

White plastic glass fiber

I will not discuss the glass beads. It is not environmentally friendly, has a short life span and cannot be maintained. It is already eliminated. The most basic at this stage is white plastic and glass fiber.

I like white plastic and glass fiber, mainly because they are close in grade, the price is close, the process is slightly different, resulting in a slightly different life expectancy and the most important thing is that the industry is often confused. Some kinds of white plastic and glass fiber.

In fact, they are the difference between the middle interlayer materials, white plastic is chemical fiber, glass fiber is glass fiber. The long life of the glass fiber is not so easy to curl and yellow, as for the delicateness of the picture, color reproduction, black level, etc., are similar.

They are the lowest-end screen products we have defined.

Applicable scene: Suitable for all projectors, suitable for occasions where the requirements are not high.

Soft white series

The soft white curtain mainly refers to the PVC material, which is elastic, and the front is a white soft curtain, which is softer than the white plastic glass fiber.

This grade is commonly used in household products, cost-effective, long and short focal projectors can be matched, the frame screen electric screen can do. According to the needs of propaganda, the names are different. There are those called nano-screens, those called polymer screens, and those called 4k soft-white screens. In short, they are all kinds of things.

Of course, although they are all kinds of things, the actual screens still have grades. You can refer to the third line of the second line of the above picture, which are all soft and white, but there is a gap in the degree of detail.

Applicable scene: suitable for all projectors, suitable for most mid-to-high end, home theater scenes without sound requirements.

Sound through screen

The sound-transparent screen is suitable for large-size screens. Because the size of the screen is large, if the position of the speaker cannot be placed behind the screen, the accuracy of sound positioning will be affected. The effect of 5.1/7.1 or even the panoramic audio system will be discount. In general, we will recommend the sound of the 135-inch screen.

There are only two types of sound-transparent curtains at this stage, which are woven through sound curtains and perforated sound screens.

In general, the comprehensive effect of the perforated screen is slightly better, especially the micro-hole screen with 0.4mm or even smaller aperture. The picture effect is very close to the soft white screen that is not transparent, but the sound effect is slightly worse than the woven sound transmission screen. a little.

Applicable scene: Suitable for all projectors, there are scenes with sound requirements.

Light curtain

First of all, we must clarify a misunderstanding: the role of the anti-light curtain is not to make your projection screen appear brighter in the light environment, but rather to improve the contrast of the screen, color reproduction compared to the ordinary white screen. , black level effect. On the contrary, the screen brightness (gain) of the anti-light curtain is not comparable to the ordinary white screen.

Sometimes we will meet some customers (especially end customers) who will say, ah, your home anti-light curtain does not look so shiny, how expensive.

First, not my home, which anti-light curtain is not as bright as a white curtain.

Second, don't just look at the brightness. You see the effect of the white screen in a bright environment. It is gray and gray, and the contrast is close to 0. Is it bright?

The anti-light curtain can be divided into two types according to the matching projector, and the ordinary focal length anti-light curtain and ultra-short focus anti-light curtain.

a) With the anti-light curtain of the ordinary focal length projector, the anti-light effect is mainly achieved by the special coating on the surface, and the surface is mostly gray or dark gray.

The telephoto anti-light curtain orthodox method is to achieve the light absorption effect through special coatings. Each has its own coating technology developed by itself. However, some manufacturers will use the metal screen to grow the coke and resist the light curtain. No way, who is it to lie? . Anyway, I don't quite agree with this concept. I think high gain is anti-light.

b) The anti-light curtain with ultra-short-throw projector is mainly realized by physical (such as zigzag structure) to achieve anti-light effect. The surface may also be matched with light-absorbing or reflective coating. The technical content is extremely high, and it is temporarily impossible to produce in China. .

Ultra-short-focus anti-light curtains, there are two mainstream markets: black grid and Fresnel. The perspective of the black grid is large, Fresnel has a good positive effect, and each has its own strength. The black grid can be used as a soft curtain, and the price can be lower. Fresnel has only a hard screen, and it is expensive and expensive.

By the way, our family now has a new product, the grille, the effect is slightly worse than the black grid, but the price is much cheaper, it is an exclusive product. Is this soft and wide?

Applicable scene: Applicable to ambient light environment, according to the type of curtain, suitable for ultra short focus or ordinary focal length projector.

To put it simply, the common screens for home movies are basically these four categories. Each category has a large number of products from various manufacturers, which are selected according to needs.

Other non-home shadow common curtains

There are many types of curtains, and our company has twenty or thirty selected screens suitable for various occasions. When buying a projection screen, you should never tell the merchant, give me the best curtain, and will kill you.

For example, the metal screen, which is basically used in large theaters, using passive 3D projectors, the home shadow is almost no one used. The metal curtain is famous because it has a high gain of 2.0-3.0, but the world is not talking about gain. We don't want to appear to be behind the times.

For example, anti-light curtain, things are good, things are very expensive, but you use it in a separate audio-visual room, the perfect environment of shading, it is not only a waste, but also lowers the effect of your picture, not worth the candle.

There is also a rear projection screen, which is not used by the family (of course, there are special hobbies that are not within the scope of discussion), all of which are commercial occasions.

There is one more thing to mention here: a soft gray screen. In our opinion, soft ash is between the white screen and the anti-light curtain. The light gray color is a little anti-light effect. It can increase the contrast and black level of the screen, but the effect is relatively small, but some small factories and small brands. I also put soft ash into the category of anti-light curtains. How do you say that these things are sometimes very blurry, and you say it is not wrong.

However, we don't push the soft gray, or use the gray screen when the shading is good, or use the anti-light curtain directly. The soft gray screen is only used when the electric screen is used, and the ultra short-throw projector is used, and the budget is low.

Brand

As a video system, the curtain is almost the most marginalized product. The average consumer has a very small understanding of such products, and the number of brands that can be named is estimated to be no more than three.

Finally, talk about the investment budget for the curtain. Most people are very willing to invest in the terminal carrier of the audio system - a pair of hifi speakers, which can even account for half of the entire audio system. However, in the video system, the curtain as the terminal carrier has been deliberately ignored by most people, not to mention half of the investment, or even one tenth.

In general, the price of the curtain should be proportional to the projector's budget. The price of the curtain is one-fifth of the price of the projector, which is the most suitable. Although I am doing the curtain, but for the final picture, the quality of the projector is more influential. The main investment should be on the projector, but it does not mean that the curtain can be randomly selected, or even a white wall. Or think that the curtain does not have any technical content.

This industry is still far from forming a monopoly market. Each brand has its own advantages and development plans. As a consumer, you only need to find a suitable one. For an example of buying clothes, if you are a local tyrant, you must buy the most expensive ones. Then you should not go to the brand of Benny Road, at least Armani. If you are an ordinary family student, go shopping. Clothes, don't go to Prada.

The curtain brand is also the same, some are not asking for quantity, selling feelings and brand premium (but I really don't understand the curtain industry can also have a brand premium); some are not looking for quality, if it is broken, the materials used All can save the province; of course, some are relatively mid-range, and everything is moderate. . .

More fresh and fun home theater information, please pay attention to home theater network http:// (WeChat: cnhifi), the country's most influential home theater audio player interactive media website. (Turn almost knew, Author: shavy)