![]() ![]() ![]() In fact, when it comes to commercial use, rear projection may actually be the wiser option.Īs mentioned previously, movie sets are a huge champion of using rear projection to bring their stories to life, with our rear projection screens featuring in many of Hollywood’s notable films including Guardians of the Galaxy Vol. What are the advantages of rear projection?įront projection is now undoubtedly the more popular option, but that’s not to say that rear projection doesn’t have its advantages. Plus, if you were to use front projection, any actors and props in the scene would cast shadows on the screen-thereby ruining the effect of the projection. Rear projection used to be all the rage in the film industry: cast your mind back to car chases in old James Bond movies.īut why was it so popular? Well, the theory is that by putting the projector behind the screen and in its own room (where you have complete control over the surrounding lighting), you can achieve the best image possible-and avoid the effects of any ambient lighting that may be hitting the front of the screen. The principles are pretty basic-you simply place your projector behind the screen, shooting towards the audience, set it to rear projection mode, and you’re all done. In this article, we’re going to explore how rear projection works, the benefits that it brings, and what to consider before purchasing a rear projector. But have you ever considered the potential benefits of rear projection ? You’ve probably heard of front projection before-in other words, when a projector is placed in front of the screen. Huh interesting, i think what we need ultimatly is a good difuser that wont eat too much light yet yeald a bright image that is even, i have tried plexi painted white on one side for the front projection system but plexi uses light, it was 3mm thick plexi, i think ultimatley a 1mm or 1.5mm thick plexi would do the trick, maybe plexi in the white coulor or a difused plexi, i did try to see what it was like on the other side of the plexi to see if i could see much of a picture on the otherside and yess quite bright actually and clear, i dont know how evenly lit it was as it was only on a small piece of scrap but i think its got potentional, i maybe going to get more plexi this week so ill have a look and see if i can get a few samples to try different types and to see whats best or if this idea is worth persuing, an idea i had was the chistmas spray u put on your windows at christmas for the snow afect, this stuff is quite translucent and difused, abit like the phosfourus in a crt so maybe this will work, the only thing is it will have to be evenly spayed, another idea yeah yeah they keep coming eh? lol is to use the contact u put on school books, use the white that is quite transmisive too and easy to aply, anyway any thoughts keep them coming.Posted March 18th, 2021 by Emily Burkinshaw & filed under ![]() I wish could add pictures but I dont how to but more than one image on a single post. You would need a larger fresnel lense the size of screen to make the light ways equal when they reach your eyes. The longer the light rays are the darker they are when they reach your eyes. Once you get it build you notice that the screen is %100 viewable from a distance and at eye level, this is because the light rays coming from the projector are not the same length, thats why the center is brighter than the other areas around the screen. Once you get it just right build the rest of your frame around it. Now here is were the trail and error come in, you have to figure out how to position your mirror and projector to get a image that fits you screen and is focused. Mine is made with the Sony PSone Lcd, a 42 watt(2700 lumen) compact floruescent light bulb and the Figinon rear projection tv lense.īuild a frame for the screen just something to hold it up, my screen was made from a piece of plex-glass and a opaque show curtain. Now for the projector, first build it so that the image will show correctly on the this mean that it shows up on the wall like a regular tv. You need a large mirror if you want to keep it small and keep the image bright. After you figure out how big you want your screen find a mirror that is a couple of inches smaller than your screen or one the size of screen. To start out figure how big you want screen, 40" to 50" inches are easy to make but 60 and up are harder, unless you are going to but the projector directly behind you screen. I'm here to help anyone who is interested in building a rear projection, I have succesfully build a rear projection tv use a design I found at I don't know if there are calculation that you can use to figure out how far your projector from the I just used trail and error and it works. ![]()
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