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Different Fresnel Lenses, Different Capabilities - Different TVs...
The punchline being spot lenses can do everything that a linear ... Older Big Screen Projection TVs had a square picture, while newer units have a ... Since the newer ones are wider, I would assume they would need the Linear Lens in ... it's only 11 inches but it says it will generate 2000 degrees fahrenheit. |
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Guide to Projectors for Interactive Installations / by @laserpilot
Rear projection can also cost you some brightness depending on the ... is not linear, so it will not be seen as two times as bright – just brighter. ... You can do homography distortion in software to align the two, but then ... . You can make an almost passable projector with an LCD screen and a fresnel lens ... |
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January | 2012 | Karl Guttag on Technology
The Laseno projection lens is not of high quality and you will see some ... in picture as well as some spots having some blur due to the quality of the lens. ... ( you may have to click on the + magnifying cursor on your browser to do so). ... A rear projection screen is designed to only accept light from a certain ... |
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Guide to Projectors for Interactive Installations | Slade Knowledge ...
Part 1 will focus on the projector as hardware(lenses, lumens, surfaces ... . Primary advantage of a light source like this is that you don't have to ... CRT projection was used a lot in some of those large 90′s era rear projection big screen TV's. ... . Essentially, plan on extra equipment if you're looking to... |
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Tesla Power!!
Parabolic troughs and fresnel lenses are very similar in purpose but they have differences when it ... But first, let me tell you my status on it. ... for a square meter, but then I heard that they are stored in old rear-projection and DLP TVs! ... It's pretty easy to do, making mostly for just tons of screws to rem... |
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Meant to be Seen - View topic - [DIY] "Passive Projection , How To ...
If you have "lense shift" on the projector, life becomes a whole lot ... There is no need for tilting the projector etc anymore to make both projectors project at the same spot. ... I'd go for the ones polarization.com offers with the 3 mil backing or so. ... .. Ok, the only thing I had to do is put the prjectors somewhere. |
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Pico Projection | Karl Guttag on Technology | Page 2
They say a “slip in Washington is when you accidentally tell the truth” ... It is just going to take more than 2 year for the brilliant people at the laser ... .. have to click on the + magnifying cursor on your browser to do so). ... . 3M has developed Vikuity™ rear projection plastic films that don't use Fresnel len... |
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Sam's Laser FAQ - HeNe Laser Testing, Adjustment, Repair
If all you have is a HeNe tube but no power supply, see the section: Testing a HeNe ... For the output mirror, this is roughly the central millimeter or just slightly more ... .. discharge or a Solar furnace made with an overhead projector Fresnellens. ... If it doesn't glow with that, it's not going to do any better at 1,000,00... |