Selected projector screen, you may no longer need LCD TV

In fact, for the average consumer, choosing a suitable curtain may be harder than choosing a suitable mobile phone! The reason why it is difficult for you to make choices is mainly because projector manufacturers have not done enough to popularize this piece of knowledge. Although the structure of mobile phones is complex, some of the friends who are now paying close attention to mobile phones know what kind of phones are good and what configuration they should use. So, Mi-Jun today started to talk about jade, and talked to everyone about how to choose a projection screen.
Why do I need a curtain?

Why do we need a curtain? There may be different reasons for different consumers, but most of them can't escape the following two reasons:

There is no screen on the white wall, and it almost feels like a theater. There are actually a few people who have this kind of psychology, because we are accustomed to the fact that the TV has a border and the cinema has a feeling of boundary. The picture that is dropped on the white wall suddenly lacks a border, causing people to lose a sense of order.
At the time of decoration, the family did not plan to project a position, either hung a television, or attached a wallpaper, or brushed a colored wall or the wall surface was uneven, requiring the curtain to be a projection plane.
Assigning a curtain to the projection can increase the gain and reduce the influence of ambient light on the perception of the picture. This is also the biggest role of the screen.

From a professional point of view, we chose the curtain to solve the problem of projections being disturbed by ambient light, so next we talk about the core factors that affect this issue.

First of all, we must understand that, whether it is traditional projection or smart projection, laser television, the principle that we can see the picture with naked eyes is as follows. The projection uses light to shoot the screen onto the curtain or wall, and then from the curtain or wall. The face reflected in our eyes became the picture we saw.


This reflection process can be divided into diffuse reflection and directional reflection. Diffuse reflection is due to uneven reflection surface, the reflected light is disorganized, in all directions, the light is not concentrated, the brightness is usually low, but the irradiation of a wide range, such as paper, walls, etc.; directional reflection is easy to understand The light is reflected in the same direction, the light is concentrated, so the brightness is usually higher, but the range of illumination is narrower, such as the mirror.


Therefore, under the condition that the projection itself and the surrounding environment are not changed, the factor that affects the brightness of the screen and the maximum viewing angle is the reflection surface in the reflection process, that is, the curtain or wall in our projection process.

Simply put together: The more the directional light reflected by the projection screen, the higher the brightness gain, but the viewing angle will decrease; conversely, the closer to the diffuse reflection, the smaller the brightness gain, but the viewing angle will increase, so choose When the curtain is on, it is necessary to weigh the different needs of brightness and viewing angle, according to their actual situation, choose a different curtain.

To pave the way for so many principles, we mainly want to tell you that we must pay attention to materials and shapes when we buy curtains. Material mainly affects the screen effect, which is the gain mentioned above. Modeling mainly affects the use of the scene, different design to adapt to different use scenarios.

Projection screen type, difference, purchase suggestions

Classified by material:

White Plastic & Glass White: White Plastic & Glass White should be the two most common curtains in the market. The more light that can be directed and reflected by the projection screen, the higher the brightness gain. The biggest difference between white plastic and glass fiber is here. The white surface of glass fiber should be thinner than white plastic, and the light that can be reflected more directly, so the brightness gain of glass fiber white is higher than that of white plastic. However, in actual experience, Mimi thinks that the difference between the two is not significant. If you compare them, you can see a slight difference.


Gray plastic & glass fiber gray: gray plastic & fiberglass gray and white plastic & glass fiber white can basically be the same, the difference is in the screen contrast, the gray screen can improve the contrast of the screen compared to the white screen, that is to say When the display is black, the picture can be more completely black, but its brightness gain is smaller than that of the white screen. The difference in brightness gain between gray plastic and glass fiber gray is similar to the difference between white plastic and glass white, and it is not obvious.


Anti-light curtain: Anti-light curtain can be divided into black grid anti-light curtain, Fresnel screen, medium telephoto anti-light curtain. Among them, the black grid anti-light curtain and the Fresnel screen belong to ultra-short coke-resistant light curtains, and are special anti-light curtains customized for laser televisions. Therefore, they can only be used by laser televisions. Both can be said to have advantages and disadvantages. To adapt to different users, the laser televisions of Mijijunjia provide two different types of ultra-short focal length anti-light curtain packages and free on-site installation services. The medium telephoto anti-light curtain is for the projection of a larger number of smart projection and the traditional projection, such as the extreme meters H1S, pole meters Z5 and so on. The difference between the three anti-light curtains is actually quite large, so the Mi-mi-jun started to speak with everyone.

1. Black grid light curtain:

The surface of the black grid anti-light curtain is saw-toothed. The top of the saw tooth is black and the bottom is white. The black absorption layer above can absorb the ambient light from the top of the screen. The bottom transparent PU can reflect the laser from the bottom of the screen. The light of the TV is used to achieve the purpose of resisting light. This is why the A1 laser TV A1 equipped with a black grid anti-light curtain will have a reversed polarity when the curtain is installed.


The above picture shows the more intuitive, this structure of the screen directly to the laser TV projected image, the orientation of the parallel reflection into the viewer's eyes, effectively reducing the ambient light from the top, and the viewing angle reached 160 degrees.


The surface of the black grid anti-light curtain, as shown above, looks like a metal wire drawing process. In fact, it is a soft curtain, and even 120 inches can be installed easily. Of course, because of the extremely fragile nature of this special prism structure, it would be scrapped to scratch the entire curtain. The yield rate is very low and the cost is very high.

2. Fresnel screen:

The principle of Fresnel screen is very similar to that of a black-grating light curtain. It is a principle of light absorption on one side, but the surface structure of Fresnel screen is greatly changed. Its structure is a concentric circular pattern from large to small. In order to withstand the light from the top of the screen and the left and right sides, that is, it can resist all the light from the direction of projection, it is definitely better than the black grating anti-light curtain. , The brightness gain is higher. And due to Fresnel screen coated with a reflective layer, there will be similar to the liquid crystal TV spot, so its overall effect will be closer to the LCD TV.


Of course, although the texture blocks the left and right sides of the light, the light is concentrated in the middle, which increases the brightness gain, but this also causes the Fresnel screen to have a lower viewing angle than the black-grid resistance light curtain. And because the Fresnel screen's optical structure is more complex, its cost is higher than that of the black grid anti-light curtain, and the price is also more expensive, and this structure cannot be bent at a larger angle and can only be made into a hard screen. It is not easy to enter the home, which further increases the cost of transportation and installation. At present, the largest on the market is only 100 inches.

3. Medium telephoto anti-light curtain

The telephoto anti-light curtain has a big difference from the previous two anti-light curtains. First of all, it is a kind of anti-light curtain which is launched for projection products such as H1S, Z5, and Z4X. It does not need the ultra-short focal laser TV as the first two models; it is its second one. Anti-light principle does not rely on special structures to block ambient light, but by using a special metal coating, so that the surface texture of the curtain is very delicate, close to the mirror, so that the directional reflective projector more light, to improve the brightness gain.


With respect to light resistance, compared with common white plastic and glass fiber, the contrast of the picture is improved by several times. Even in a well-lit environment, the projection screen can be clearly seen. The above picture is in the case of turning on the light. A contrast between the telephoto anti-light curtain and the anti-light curtain that does not use the medium telephoto can be felt.

The above-mentioned several types of curtains are relatively common for home use. The following two kinds of curtains are used less frequently, but also together under the popular science.

Rear projection screen: The rear projection screen is translucent. As shown below, it is generally used with glass. When using a rear projection screen, the light path of the entire projection system is closed, and is not affected by the ambient light. Therefore, the rear projection screen is mainly applied to the environment where the ambient light is bright, and the front projection display screen is very dark, which can greatly increase the brightness of the screen. And color and picture quality.


However, in order to optimize the quality of the rear projection, the required space for installation and use of the rear projection screen is greater than that of the front projection, and the space for installing the projector is sufficiently dark to make it unusable in many places. Currently, rear projection screens are mainly used in the studios that hold a large number of people or on the screens of exhibitions. The following is a picture of a projection screen and a rear projection screen projected in the company's demonstration hall.


Sound-through screen: The sound-transmission screen, as its name implies, allows the sound to penetrate the screen and place the speakers behind the screen, allowing the perfect integration of images and sounds. The main application is in the theater, which can restore the real sound to the maximum.


Through the sound screen as shown above, the screen is covered with small holes of uniform size and regular distribution, and these small holes are used for sound penetration. The sound behind the projection screen transmits the sound through these small holes. At the same time, the sizes of these small holes have to do as much as possible without affecting the quality of the picture and achieve the realm of combining sound and picture.

Classified by model:

The effect of the curtain's shape on the picture quality is not very large. Consumers can choose different types of curtains according to their own use scenarios.

Bracket curtain: The bracket curtain is very suitable for company use. It does not need to consider the structure of the wall inside the house like electric curtain, manual curtain, and frame curtain. It can be installed and used anywhere and at a low price. However, it is also unstable and affects the viewing experience. Therefore, Mijijun does not recommend home use.



Manual & Electric Curtains: Manual & Electric Curtains are more suitable for home use than stand curtains. When not in use, they can be retracted without worrying about falling ash. However, compared with stand curtains, it is necessary to consider the load-bearing capacity of the wall during installation. Not all places can be installed, but the master of on-site installation will evaluate the load-bearing condition of the wall itself, so consumers do not have to use it too much. worry.


In the long-term use of manual screens, due to frequent central pull-down forces, it is also easy to cause the screen to generate “V”-shaped ripples, and because the curtain is affixed together with a variety of different materials, it is affected by the high temperature of the projection light source for a long time. The thermal expansion and contraction of the material will cause the curtain edge to bend, affecting the flatness of the screen.


The electric curtain is evenly lowered by the motor from both ends, which can ensure that the curtain is not affected by external forces. Therefore, compared with the manual curtain, it has better flatness and easy maintenance. It is not easy to produce ripples in long-term use. However, it also has the problem of curtain unevenness caused by thermal expansion and contraction of different materials.

Floor pull curtain: The curtain curtain is similar to the curtain curtain, and it is mainly used in places like the company's meeting rooms, exhibitions, etc. where it is impossible to lift electric curtains. However, it is more convenient to use and recycle than bracket curtains, and it does not occupy much space like a bracket. However, its price is much more expensive, so most companies are willing to use lower cost bracket curtains. .


Picture frame: The so-called picture frame, as the name implies, is fixed to the wall like an oil painting. It is made of an aluminum frame and framed by a picture frame. Then the spring is buckled on the curtain to make the screen flat. This is the simplest type of screen. All you need to do is set it to the wall. It is not as portable as the first few, it can not be recycled, it needs to occupy a certain space, so it has been less popular than the manual & electric screen. However, with the popularity of laser television, its unique advantages have been highlighted. Laser television has a very high requirement for the flatness of the curtain. If there is a slight unevenness, distortion will appear in the picture, and the picture frame curtain adopts buckle springs. The method will be blablahing, which is currently the best in several markets.


There are any questions related to the purchase of curtains. You can leave a message below, and Mijeong will do his best to answer them.

Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.

Wireless Stealth Camera

Wireless invisible cameras are used stably in domestic wireless environments. Micro wireless surveillance camera features high stability, high speed, long distance, and multi-point testing. It can play a huge role in the fields of environment, energy, construction, transportation, medical treatment, and industrial machine condition monitoring. Especially when the wiring is complex, the wiring cost is high, the data is transmitted over a long distance and the mobility demand is high, its role is more obvious.

Wireless Stealth Camera,Wireless,Stealth Camera

Jingjiang Gisen Technology Co.,Ltd , https://www.jsgisengroup.com