refractive index for some plastics

[Sebastien Pamart]

Do you know refractive index for some (transparent) plastics ?

Thanks

Sebastien Pamart

[Johannes Swartling]

Even for the same type of plastic, it varies a little depending on the
manufacturer. I was searching for the ref. index for transparent PVC at
around 650 nm. I found references quoting from 1.48 to 1.52. When I
measured it on my particular sample using a microscope it was 1.51. I
don't know anything about other types of plastic.

Johannes

[James A. Carter III]

The dispersion coeffecients for several types of plastics are
available within CodeV by using a macro that loads them into an
optical model. Most of these values are from other sources. The
three type used most in optical production for high volume are:

Material 656.3 643.9 587.6 546.1 486.1 480
Polymethylmethacrylate 1.4892 1.4896 1.4918 1.4938 1.4978 1.4983
Poly-styrene 1.5849 1.5858 1.5905 1.595 1.6041 1.6052
Poly-carbonate 1.5799 1.5807 1.5855 1.5901 1.5994 1.6007

This data was taken or calculated from the dispersion chartacteristics
given by the CodeV macro "PRVPL" A much more comprehensive set of data
is available from Optical Research Associates http://www.opticalres.com/

Please be aware that this data is very dependent on the exact source of
these materials and upon the temperature of the material. Your best bet
will be to pick a vendor and work with them regarding their process and
material selection versus control.

Good Luck :)
--
James A. Carter III
James Carter Optical Consulting
jaca...@earthlink.net
New web location at http://www.jacarter3.com
Also look for http://www.cecec.com

[Sébastien Pamart]

Thank you for your reply.

Sebastien Pamart

[Don Wolpert]

Sebastien

Photonics Spectra, Photonics Handbook has some listed.

Don Wolpert hd.wo...@trw.com