Homemade Projector Screen The Principle Diy Projector Screen _____________________________________________________________________________________
By Clinton - http://diyprojectorscreen.org/ Projector screens are generally divided into two types base on their functionalities: reflection projector screen and transmission projector screen. It can be also divided into soft and hard screen base on the materials they are made from. Home theater generally uses soft reflection screen. My brother-in-law originally wanted to buy a 짜1000 (~$150) socalled "import screen", but a friend of his who sells projector screens told him that it is hard nowadays (in China) to distinguish the genuineness of an import screen, it is hard even for himself. Some of them that are labeled with 'import' or 'joint capital' were actually manufactured somewhere in the south of China. Learn More About Diy Projector Screen He felt that he'd rather to buy a 짜300 domestically manufactured screen with good feelings than buy this kind of "import screen". What this friend said makes perfect sense. But after doing some research, my brother-in-law found that all screens on the local market are made from high gain Bolivian bead that is used for projecting newspaper clips, they are simply not suitable for video frequency.
Theoretically speaking, a white wall with one smooth side actually is the best "screen". Because its gain is 1, meaning that the light projected can be completely reflected out, which is an ideal state of being "no absorption, no gain". Unfortunately, for the purpose of absorbing and proliferating the sound wave, he already made the wall a background wall with sound-absorbing material and plywood installed. making it impossible to serve as a "projector screen', he
had to find another solutionYou might be wondering at this point: why do people still bother purchasing expensivescreens if we can all use white
Well, there are always benefits and advantages of using a professional screen: convenient, artistically beautiful and dignified, good screen can also make up the insufficiency of a projector and improve visual effect. Among the expensive screens, one type is "gray screen" (cost about ¥15,000, roughly $2000). This kind of screen probably was originally designed for liquid crystal projectors. The biggest problem with liquid crystal projector is that the color appears dark and grey, insufficiently calm. This is its "congenital defect" that is caused by its liquid crystal board and path of rays. Regarding gray screen, we all know that gray is merely a lighter black, and black absorbs all visible light. Gray can only partially absorb visible light, It is like brightness of the picture is reduced. If you have used any picture processing software's "brightness / contrast gradient" option,
So… What’s Next ? To learn more about Diy Projector Screen, Click Here: http://diyprojectorscreen.org
Published on Mar 7, 2014
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