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Chang Jia meiyin international limited
Tung Choi Street, Mong Kok, Kowloon, Hong Kong 1A-1L-Wai commercial building, Room 10/F1003
Tel: 00852-27592923
Fax: 00852-27592926

Beijing Chang Camry technology limited
123th, Zhongguancun East Road, Haidian District, Beijing C-105
Zip code: 100,089
Tel: 010-62130067
Fax: 010-62136107
Email: BJ@ccyscreen.com
24-hour consultation: 13,581,676,957

Shenzhen Chang Camry Technology Ltd
Block c, SEG Technology Park, building 3, room 512
Tel: 0755-83953075
Chang in Shenyang jiamei technol...

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Home Theater projection screen of common sense
With the rapid proliferation of home projectors, many of my friends at the time of the formation of the projector in the first place, in order to pursue better results, also highlighted the importance of the projection screen, how to choose a suitable projection screen has become a concern of these friends.
    Below, combined with Chang for years to force the company to experience with projection, in combination with caramel projection screen under a different classification standards, briefly talk about how to choose the right projection screen. By feature classification screen functions are divided into reflex, two types of transmission. -Reflex is used to being cast, transparencies for projection. Regular cast is the projector on one side with the audience: rear-projection projector and audience respectively, both sides of the screen. Because the projection required considerable space, not suitable for normal household use, so the reflective projection screen is recommended for general households.
    In addition, has a slightly smaller hole on the curtain effect, speakers hidden in, also very suitable for use in theaters. Sold in classified by proportion and 16:9 proportional to the projection screen divided into two classes. Because home projector is the 16:9 display output formats, watch DVD, BD/HD-DVD is dominated by 16:9 or wide-screen, in order to get close to the cinema to watch recommended home theater class uses a 16:9 screen, some super Geek in the pursuit of the ultimate effect, framing 2.35:1 curtain used with Panamorph lenses or CRT three shots.
But if it is mainly to watch 4:3 NTSC and PAL system TV, 4:3 curtain can also be considered.

 Classified by installation is generally divided into hand, motor-driven hanging curtain hanging curtain, curtain and frame, scene four.
    Many famous curtain manufacturers provide a screen of the same scene but different installation methods to meet the needs of consumers, consumers can be selected according to their own economic conditions.
    Electric brand electric hanging curtain hanging curtain is more expensive, more suited to configuring CRESTRON (Crestron) intelligent control system luxury movie theater or budget plenty of friends.
    Hand in hand hanging curtain hanging curtain of the most common and affordable, popular with general consumers.
    Curtain-curtain-mobility is very high, suitable for curtains cannot be installed or often do shows friends, strong adaptability.
    HD screen full HD screen is super fan favorite, not likely to appear in use for some time after the other three installation types more prone to wrinkles not enough direct information, can provide a flat as a mirror image.
    Classification by materials is generally divided into textiles class (including PVC) and metal, focuses on the most widely used fabrics of the following categories. Textile General white and grey curtains.
   
Matt white white screen is divided into low-gain (MatteWhite) and high gain glass beads (GlassBeaded) two broad categories. In order to better understand what is behind, let us first understand the gain's effect on the image. Gain is the industry term is mainly used to measure the reflection of light on the surface of the screen. In projecting light angle under certain, projected light flux invariable situation, brightness on the screen in one direction and ideally the brightness ratio of luminance coefficient called the direction, values are known as one of the largest projection screen gain.
    Gain is used to measure the screen brightness before the relative value indicators of different screens and optical properties of materials. Typically, we will even ancestral rough white surface of gain is defined as 1, reflection of light on the surface of the screen and it will draw the screen gain value when the comparison is made. Screen gain is usually perpendicular to the measurement of reflected light in the center of the screen.
    Gain of the screen and the viewing angle of the screen has a different move, gain higher viewing angle will be smaller, depending on the appropriate selection of projection screens, screen does not gain the higher the better. General white plastic screen gain is 1-1.5, belonging to the diffuse reflective type, the rendered image plain and faithful, but susceptible to environmental and external light interference. White plastic with low gain screen in addition to the General characteristics of white plastic curtain, high ambient light resistance, can make an image black new appearance.
    White plastic suitable for curtain around after dark and ambient light and diffuse a very minor place, can be naturally faithful image. Glass bead screens gain is relatively high, usually above 1.5, perspective is quite narrow, ambient and diffuse reflection-resistant ability, in case of ambient light interference can lead to a bright, colorful picture. Use CRT three shots or digital projector with brightness lower than friends glass bead screens can also be used to enhance the brightness of the screen. Regression and reflective glass bead screens. Regression refers to the projection screen of the incident light source (projector) focused reflection, angle between incident and reflected no; reflecting incident light is reflected after a certain angle, angle between incident and reflected. In General, the projector is always fixed to the ceiling or other similar situations, it is best to consider reflected type.
If your projector and projection screen nearly horizontally, is considering purchasing the return type.

    Gray curtain is the company's first proposed the concept of a, grey curtains is often referred to as "high-contrast screen", this is because the original design was intended to enhance the data projector in the TV room of light environment in contrast. Its working principle is: ash can absorb more light than the white curtain, this was done so that black can be kept on the screen. If like most digital projection projector light intensity output, then white can remain on the screen white, while black is due to reduced ambient light interference, more black, which led directly to the screen in black and white contrast gap increases, so as to achieve the purpose of increasing the contrast. Gray screen is to use a gray screen section, and some high-ash, scene combined with high gain and two species of grey screen technology, can significantly increase ambient light interference resistance, enhance the contrast. Grey screen suitable for ambient light better or want to leave the background light to watch friends. Be careful to use a gray screen, because ash is referred to as the gray screen, in natural light, the surface of the screen is slightly dimmed. This gray, and no white light of the projector to cast changes, that is, when the projector when the original image is pure white in the picture (such as the clouds of the sky, white and so on), images on the screen are slightly gray, different color rendering on the screen it is a change, we often say that the habit or coloured dye.