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Article #7301Re: HeadsUp Display ( WAS Re: Big Screen Projector from tiny LCD TV ? )
From: Mike Jassowski
Date: Thu, 30 Aug 1990 17:35
Date: Thu, 30 Aug 1990 17:35
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Greetings. And how does the "focus at infinity" work? I presume you would need lenses - acrylic as to not have 40 lbs on you head? ---------- I imagine you are asking how a heads up display focuses at infinity without a bunch of lenses? I had a holography class which discussed this many years ago. They used a projector with a holographic lens to project the images onto the cockpit windshield with an apparent focus of infinity. I'd imagine that there is some pretty good literature on this available for more detail on specifications for the holographic lens. -- Mike Jassowski
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!apple!usc!samsung!uakari.primate.wisc.edu!sdd.hp.com!hplabs!hpfcso!hpfinote!majReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!apple!usc!samsung!uakari.primate.wisc.edu!sdd.hp.com!hplabs!hpfcso!hpfinote!maj From: maj@hpfinote.HP.COM (Mike Jassowski) Newsgroups: sci.electronics Subject: Re: HeadsUp Display ( WAS Re: Big Screen Projector from tiny LCD TV ? ) Message-ID: <15880017@hpfinote.HP.COM> Date: 30 Aug 90 17:35:43 GMT References: <2916@anasaz.UUCP> Organization: Hewlett Packard CICD Lines: 13