Newsgroups: sci.electronics
Path: utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: sources for IR scope tubes
Message-ID: <1990Aug9.043916.15320@zoo.toronto.edu>
Organization: U of Toronto Zoology
References: <26851@nigel.ee.udel.edu> <10846@crdgw1.crd.ge.com> <2903@isc-br.ISC-BR.COM> <25775@cs.yale.edu> <6109@tekred.CNA.TEK.COM>
Date: Thu, 9 Aug 90 04:39:16 GMT

In article <6109@tekred.CNA.TEK.COM> vekurpan@tekred.CNA.TEK.COM (Vincent E Kurpan) writes:
>Regarding the use of old seeker heads for IR scopes
>
>None of these are imaging devices so regardless of anything else
>they are useless for imaging...

Good point, one I should have mentioned.  Those things are basically a
telescope with an infrared-sensitive cell -- not an imaging chip, *one*
*cell* -- at the focus.  Some extremely clever tricks with rotating
reticles (patterned image masks) were used to get two dimensions of
tracking data out of a single sensor cell.  These seeker heads might
be of interest for the infrared optics or the mechanics, but the actual 
sensors are near-useless antiques.
-- 
The 486 is to a modern CPU as a Jules  | Henry Spencer at U of Toronto Zoology
Verne reprint is to a modern SF novel. |  henry@zoo.toronto.edu   utzoo!henry