| Author | Message | ||
     cbex Rating: N/A |
Please pick apart these ideas: 1. Two homebuilt LCD projectors using the LCD panels from two 1280x720 resolution LCD monitors (or 1920x1080!) Pageflipping provided by a mechanical shutter infront of each light source. Viewed with LCD shutterglasses. 2. One homebuilt LCD projector using a LCD panel from a widescreen display similar to that above, but with a fast response time (8ms?). Use eDimensional LCD-compatible shutterglasses to view pageflipped video. =============== Then project that into a partial sphere, rather than a flat screen. =============== **I have experimented with a 2D homebuilt LCD projector already. Parts used: 17" 1280x1024 LCD, Overhead projector lens, Oversize fresnel lenses, Overhead projector light source / Metal-Halide light source. I wanted to project a wide angle view for a more immersive experience. Ideas, Suggestions, Realities? | ||
| M.H. Rating: N/A |
In principle this ideas are totaly bad ... You can not get enought bright light in case 1) and you can not get enough fast reponse in 2). | ||
| cbex Rating: N/A |
Ok, I see what you are saying, but in case: 1)you can always get a brighter bulb or light source (or a darker room!), and 2)What about these new 8ms and 2ms response LCD displays? Does anybody have experience with these faster displays and the "new" eDimensional LCD-compatible shutter glasses? Is the screen refresh rate still 60hz? or is it higher? If this setup can be accomplished one way or another, then you can have a high resolution (HDTV?) stereoscopic projector for the price of a good WUXGA projector. Let's think positive here, and work out what needs to be done! | ||
| M.H. Rating: N/A |
Key points: 1) You can not have darekr room than totlay dark. 2) You have no chance to focuse light or get as bright buldb as in prfesioal devices. 3) The LCD repons you menitond shoudl not be handled as change from total black to total white. The definition of the values measurment is optimzied for "good result" in reality the repsonde time is much more worse ... It is relay borning to expalin again thisng already expalind in other forums X-times ... | ||
| Unclebob Rating: N/A |
Here are some links to help. You could try the anaglyph route or go interlaced (more lost light) via the edims flakey driver. http://www.diyprojectorcompany.com/ http://www.diyaudio.com/forums/forumdisplay.php?s=a039613daa6378a4d95a5a3ae2db6ba6&forumid=20 MH is right though look at all the posts about edim and LCD support... Essentially response times on LCDs is not the same as refresh rates on a CRT. In simple terms On a CRT 85Hz represents about 12msecs for a pixel on off. LCDs are NOT measured the same way. Response times are to go from 50% grey back to 50% grey. 50% grey to completely off also counts. Especially with shutterglasses else you see the 'ghost' of the other eye's image... You could try the passive route. Make two projectors, use polorised filters, a screen that preserves polorisation and polorised glasses...like in an IMax Unclebob | ||
| cbex Rating: N/A |
thank you for your responses. i will try another route.... |
