-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 As I mentioned a short time ago, I ordered several items from Edmund Optics. I have been playing with them and here are some initial conclusions: (dia x EFL) 9x9 Very nice, but too small to see the whole Kopin cyberdisplay screen through. If there was such a thing as a 12x9 lens, I could make the display entirely inline in glasses! By that I mean no mirror needed - just a backlight LED, a diffuser sheet, the Kopin display, then the lens. Total depth probably about 2cm. However, a display would have to be tiny indeed to be visible through the small 9mm lens. 9x18 Almost right. I made a very tiny prototype covert display using this and the beam splitter. Unfortunately, the edges of the display (left and right edges) are blurry - this is due to the kopin display being rectangular and the lens being circular. It's just big enough vertically but not horizontally. 12x18 I will be using this one for my next prototype. It looks promising. I am hoping the extra 3mm of diameter does the trick. 50% Beam Splitter This thing is cooler than cool. I framed it very carefully with thin copper wire and epoxy, and attached it via two more copper wires to the lens assembly on the original prototype. This allowed me to adjust it easily. It easily creates a transparent display - and when the display is off, you can easily see through it. I'll let you all know what my luck is with the 12x18 lens and the kopin. The Beam Splitter is - to me - now a definate must-have item for any HMD hacking. If anyone gets bored with a hacked Cy-Visor, let me know and I'll see about buying it off you and try hacking it. 800x600 color, transparent covert display is soon - I can just feel it. PS - I also experimented with the glasstron lens (PLM-A35). I took my spare one and tried it with the kopin display (like Cliff's covert M1). It was easy to focus and use, but the large size of the lens (compared to the M1's display size) bothered me. So I took the grinder to the plastic glasstron lens and shaved away quite a lot. The glasstron lens is now about the size of a quarter (looking at it head on) and still displays the kopin perfectly. May be of interest to those messing with it. I'll try to have pictures up sometime. Don P http://aeinnovations.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.4 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE7E7mE2KCg0hzfOnQRAtvyAJ9Vhd/BSCd9cpQNxICpandSCHnuXgCfZhX1 BNUyFVO7Aj4ZsRN00XXFWWQ= =2J+I -----END PGP SIGNATURE----- -- Subscription/unsubscription/info requests: send e-mail with subject of "subscribe", "unsubscribe", or "info" toWear-Hard Mailing List Archive (searchable): http://wearables.blu.org please, Please, *PLEASE* don't subscribe through a forward/false domain
From Wear-Hard Mailing list Archive (WH)
Maintained by R. Paul McCarty
Archive created with babymail