12-02-2004, 07:52 AM
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#1 |
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Lifetime Member
Join Date: Dec 2003
Location: Rancho Cucamonga, CA, USA
Posts: 295
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Refraction Index
I was looking at my glasses the other day, and I wondered, "How does my prescription relate to the refraction index in Lightwave???" Any ideas? In my specific case, my glasses prescription (what is this called/what is it measured in????) is
-3.50, but how do I find the refraction number that this relates to in Lightwave? Is there a real-world correlation? |
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12-02-2004, 08:38 AM
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#2 |
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Super Moderator
Join Date: Jan 2003
Location: Sunbury, UK
Posts: 2,339
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Generally, the refraction index of the lens in your glasses will be that of normal glass (can't think what this is off the top of my head, but there's a handy table in the back of Dan Ablans Simply Lightwave Books). The refraction index should be constant. The prescription value is a measure of the strength of the lens. This link should tell you all you need to know:
http://www.hon.ch/Library/Theme/Visi...tion2.html#2.1 |
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12-02-2004, 06:02 PM
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#3 |
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Lifetime Member
Join Date: Dec 2003
Location: Rancho Cucamonga, CA, USA
Posts: 295
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That was just what I was looking for, thanks Mark.
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