Estar, Melinex, Mylar의 굴절률
Poly(ethyleneterephthalate) also known as PET, Mylar, Melinex and Estar is a commodity polyester widely used in a variety of applications: films, bottles or as spun fibers. It is typically quite birefringent in sheet form with distinct refractive indices in all 3 dimensions. As a rule of thumb the in-plane indices increase as the film (or foil) thickness decreases. (At the same time the out-of-plane index decreases.) This is due to the biaxial stretching process used to attain both a desired film thickness and specific sheet mechanical properties. Even formally describing PET film as having a x, y, and z refractive index is not truly sufficient as there is a slight index grading in the thickness direction*. Suffice it to say while this is a very common, everyday material, it is also a surprisingly complicated optical system.
*Elman J.F., Greener J., Herzinger C.M., and Johs B. "Characterization of Biaxially-Stretched Plastic Films by Generalized Ellipsometry" Thin Solid Films 1998, 313/314, 814-818.
전형적인 PET 샘플의 굴절률과 흡수율은 632.8 nm 기준 1.636 과 0.000 입니다. 아래는 굴절률, 흡수율의 파일 입니다. 만일 파일을 다운로드 할 수 없다면, 귀하는 자사의 "요청" 을 클릭하여 파일을 요청 하실 수 있습니다.
- 제한없는 사용되는 Tab-delimited 데이터 파일
굴절률 참고 - Filmetrics composite
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