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| A weird and quirky idea - CRT shaped glass/acrylic slab for LCD screens. |
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| PL1:
Did a few experiments to see what would happen. Fresnel lens placed on surface of LCD yields no magnification. Add a layer of 1/4" plexi yields slight magnification. (Directions recommend holding the lens 4" from the item you want to magnify) The fresnel lens adds interference patterns, bending it makes them worse. If you want to use casting acrylic, you might want to make a mold from the surface of a CRT -- not sure if it will work or if it will make the individual pixels stand out more. :dunno Scott |
| Maximus:
Yep I don't think we want any magnification at all, and a Craftymech inline SLG would easily solve any scan line issues. I like the idea of finding an existing piece of cast acrylic sheet maybe 1/2" or 3/4" thick and then possibly having it shaped and polished, although where??? |
| PL1:
Just spitballing here, but maybe something like this: Start with a CRT -- preferrably a dead one. Cut a piece of 1/4" acrylic slightly larger than the LCD. Put the CRT face up in your powder coat oven with the acrylic on top. Bake at 290(?) degrees until gravity bends the acrylic into a curve. Allow it to cool. Add side supports to the acrylic and use it as a mold. Scott |
| Maximus:
You can easily make a mold for a CRT with silicon, the hard part is casting clear acrylic that thick without any bubbles, also I am wondering how much it would cost for that much clear resin compared to the cost of buying a perfectly clear sheet and then milling it. |
| Maximus:
To do a large monitor like the Planar 23.1" you'd need a 24" x24" sheet. Some quick searches bring back these prices... 3/4" - $90 shipped - http://www.ebay.com/itm/Acrylic-Plexiglass-Plastic-Sheet-3-4-x-24-x-24-Clear-/141039391132 1/2" - $42+ shipping - http://freckleface.com/shopsite_sc/store/html/product75.html But where/how would you get this shaped and polished. |
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