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- From: jem21176@uxa.cso.uiuc.edu (Jon E. Meyer)
- Subject: Re: Holography NOT from real object
- References: <83828@ut-emx.uucp> <1992Nov18.140545.244@murdoch.acc.Virginia.EDU>
- Message-ID: <Bxx6HE.Iy3@news.cso.uiuc.edu>
- Sender: usenet@news.cso.uiuc.edu (Net Noise owner)
- Organization: University of Illinois at Urbana
- Date: Wed, 18 Nov 1992 16:15:12 GMT
- Lines: 21
-
- >Since the physics of holography are known, why can't one compute a hologram?
- >In principle, it shouldn't be much more difficult than ray-tracing. Comments
- >appreciated ...
- >
- >Joe Burch jbb@virginia.edu
- >ITC-ACS
- >University of Virginia
-
- You could, but you have to consider computation time, and it is more
- difficult than ray tracing, you need to calculate the field of the
- interference pattern at the hologram plane. Also, when you print out
- the result, it's easy to get enough resolution, just make it bigger.
- Reducing it to a size that's comparable to a visible wavelength is
- another problem altogether. Some use e-beam lithography to accomplish
- this, but that gets expensive. So it's not around the corner for the
- average Joe, but many people at universities and research labs are doing
- it, cause they have more $$ than individuals.
-
- jon meyer
- univ. of illinois
-
-