File:Compact Disc Numerical Aperture.svg

Description
English: Compact disks are made of 1.2 mm thick polycarbonate plastic with a refractive index of 1.55. The laser light is focused down to 1 µm, but at the surface the diameter is 0.8 mm, making the readout insensitive to dust specks.
Date
Source Own work
Author Pieter Kuiper
Permission
(Reusing this file)
Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Category:Self-published work#Compact%20Disc%20Numerical%20Aperture.svgCategory:PD-self#Compact%20Disc%20Numerical%20Aperture.svg
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Category:Compact discs Category:Optics diagrams
Category:Compact discs Category:Optics diagrams Category:PD-self Category:Self-published work Category:Translation possible - SVG Category:Valid SVG created with Text Editor:Diagrams