Screen and projector

2

[Office Partner Information Channel] The screen is a product that is used with the projector, mainly including soft screen and hard screen. Soft screens are generally divided into ordinary white screens and beaded screens depending on the manufacturing process and surface coating. The ordinary white screen is made by spraying white paint on special fabrics and doing simple processing. It has the advantages of low price, wide viewing angle and soft visual effect. However, since the white ordinary screen has a small gain on light, it is only suitable for use in small and medium-sized conference rooms, or with high-brightness projectors. The glass bead screen is made by spraying tiny glass powder on special fabrics. It has the advantages of moderate price, wide viewing angle and high gain. The disadvantage is that it is not suitable to roll up repeatedly, otherwise the glass beads will fall off easily and affect the use effect. At present, the soft screens sold in the domestic market can be divided into domestic and imported categories according to the place of origin. The advantage of the imported screen is that the quality is good. Generally, the screen color will gradually turn yellow after two to three years; the disadvantage is that the price is expensive, compared with the domestically produced products. It is about 3-5 times expensive. Domestic screens have the characteristics of low price, complete specifications and good after-sales service, but some products will appear yellow and curled after 1 year of use. Soft screens can be divided into support screens (triangular brackets/double dry brackets), hanging screens, electric screens, remote control electric screens, rear projection screens, etc. according to the way of use. It is recommended to use hanging screens and electric screens in conference rooms, which need to be moved frequently. Consideration should be given to purchasing a bracket screen.

One of the hard screens is a metal screen that enhances the visual effect when used with a low-brightness projector. The hard screen has the advantage of high gain. A 700 ANSI lumen projector can be used with a hard screen to get the effect of a 1000 ANSI lumen projector on a normal white soft screen (in terms of brightness). Hard screens are expensive, have problems with viewing angles, are bulky, and are more susceptible to oxidation. The widely used rear projection screens are mostly hard screens, and there are many types according to different manufacturing principles. There are also many brands at home and abroad to choose from.

It is worth noting that the projection of the high-brightness projector on the ordinary white wall is also very good, so as long as you keep the wall clean and white, you can also buy a screen, and you can also get a good projection effect.

Source of information: Internet

Jeans

Jeans,Denim Flared Pants,Denim Ripped Pants,Denim Pants,Denim Casual Wide Leg Pants,Denim Casual Harem Pants

Hun Yuan Ya Lian Wan Jia Dian Zi Shang Wu You Xian Ze Ren Gong Si , https://www.ylwjastragalus.com