on 10/18/04 4:27 AM, Gareth.J.Martin at g.j.martin@xxxxxxxxxxxxx wrote:
> That got me thinking as to why digital cameras and their sensor chips
> aren't themoelectrically cooled. Surely this would reduce the noise seen
> in many digital images, it does on astronomical CCDs. OK they are quite
> cool and sometimes quite large but surely it is possible to cool a
> digital camera sensor in a similar way? Are there any digital cameras
> which do this?
Those little Peltier-effect devices really suck down the current... and if
one side gets colder, the other side gets hotter... where do you dump that
heat? A hand-held camera isn't going to offer any good heat sink or radiator
areas, unless maybe you offer a built-in hair dryer option...
--
Jim Brokaw
OM-'s of all sorts, and no OM-oney...
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