keithley@apple.com (Craig Keithley) (01/24/91)
In article <14878@milton.u.washington.edu> I wrote: > I've noticed the occasional ad for small (about 4" diagonal) LCD color > monitors. They're mostly for use with camcorders, etc. I'm referring > specifically to a NTSC monitor... not the Sony Watchman. Has anyone > else found/seen what I'm referring to? I went and looked for the Casio TVs today... Not much luck. However, I did locate a Sony "device" that had such a display built in. What I found was a Sony 8mm portable VCR with an integrated 4" Active matrix color LCD. The display was fantastic. Brillant colors (for an LCD), no ghosting visible, and very bright. I found one drawback. My eyes can't focus on a display an inch away. At the minimum, I'd say that the displays would have to be about three inches away to be usable. I'd like some input on this subject. 1. What sort of field of view is required? (What's normal human vision? 120 degress?) 2. What do you think about suspending about a pound (probably less) 3 inches in front of your face? My conclusion is that you'd want to put the displays "elsewhere" and use optics to bounce the image to your eyes. This leads to some other questions: 3. Where would you mount the displays? 4. What kind of optics and how would you "couple" them to your eyes? 5. What's the minimum focal point of the human eye? I've started considering using fiber optic cable and regular CRTs. Optics, machining parts... Argggh. Dammit Spock, I'm a microcontroller firmware engineer, not a mechanical engineer. Let keep this thread from diverging too much. Please be selective in what's an email response and what's a netnews posting. Thanks, Craig Keithley, Apple Computer keithley@apple.com [standard disclaimers apply!] [special disclaimer: My work is unrelated to this newsgroup]