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Path: utzoo!utcsri!greg
From: greg@utcsri.UUCP (Gregory Smith)
Newsgroups: sci.electronics
Subject: Re: Heads up display for a motorcycle helmet
Message-ID: <4275@utcsri.UUCP>
Date: Mon, 2-Mar-87 17:52:41 EST
Article-I.D.: utcsri.4275
Posted: Mon Mar  2 17:52:41 1987
Date-Received: Tue, 3-Mar-87 03:51:51 EST
References: <UUDV=Hy00WA1s9M0IO@andrew.cmu.edu> <3610001@hpfcpp.HP.COM>
Reply-To: greg@utcsri.UUCP (Gregory Smith)
Organization: CSRI, University of Toronto
Lines: 19
Summary: 

In article <3610001@hpfcpp.HP.COM> davep@hpfcpp.UUCP writes:
>Wouldn't it be just as distracting changing focus from about 4 cm. 
>(face shield ) to tens of meters ( road conditions ) as it would be to
>look down at your tank bag?

The image does not have to be focused on the reflective surface. In fact
I think it can be focused at any arbitrary distance through suitable optics,
(so you would see the image floating, say, 20 feet in front of you. Bizarre.)

I imagine the best arrangement would involve mounting a very small crt
in front of your forehead, reflecting off the inside of the faceplate.
A tinted faceplate could allow the image to be seen in bright sunlight.

Speaking of focusing displays, did anybody see the scene in Dune where the
tactical display was focused on the pilot's *face*????
-- 
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Greg Smith     University of Toronto      UUCP: ..utzoo!utcsri!greg
Have vAX, will hack...