Abstract

The index of refraction, n of Phenoxy PKFE, a light yellow plastic produced by Union Carbide, is measured at λ = 588 nm (nD), λ = 656 nm (nC), and λ = 486 nm (nF). These values are of interest because they must be known to determine the optical characteristics of a Phenoxy PKFE lens over the visible spectrum. Lenses made of Phenoxy PKFE have an important advantage over lenses made of other plastics. Phenoxy PKFE is chemically resistant to many epoxy glues commonly used to form airtight bonds in hermetically sealed chambers.

© 1991 Optical Society of America

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References

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  1. J. Lee Swedberg, “Measurement of the Refractive Index of CsI and CsBr at Cryogenic Temperatures,” MS Thesis, U Arizona, Optical Sciences (1979).
  2. J. R. Meyer-Arendt, Introduction to Classical and Modern Optics (Prentice-Hall, Englewood Cliffs, NJ, 1989).

Lee Swedberg, J.

J. Lee Swedberg, “Measurement of the Refractive Index of CsI and CsBr at Cryogenic Temperatures,” MS Thesis, U Arizona, Optical Sciences (1979).

Meyer-Arendt, J. R.

J. R. Meyer-Arendt, Introduction to Classical and Modern Optics (Prentice-Hall, Englewood Cliffs, NJ, 1989).

Other (2)

J. Lee Swedberg, “Measurement of the Refractive Index of CsI and CsBr at Cryogenic Temperatures,” MS Thesis, U Arizona, Optical Sciences (1979).

J. R. Meyer-Arendt, Introduction to Classical and Modern Optics (Prentice-Hall, Englewood Cliffs, NJ, 1989).

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Figures (5)

Fig. 1
Fig. 1

Abbe refractometer: oil–sample interface.

Fig. 2
Fig. 2

Abbe refractometer.

Fig. 3
Fig. 3

Plot of index of refraction vs λ for Phenoxy PKFE samples A and B.

Fig. 4
Fig. 4

Plot of two-term Sellmeier approximations.

Fig. 5:
Fig. 5:

Plot of Herzberger approximations.

Tables (6)

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Table I Data from Abbe Refractometer

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Table II Results of Two-Term Sellmeier Equation Fit for Sample A, Where A1 = 0.1019718, A2 = 1.495003, U1 = −1.655954, U2 = 9.094715E-03

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Table III Results of Herzberger Equation Fit for Sample A, Where A = 1.105661, B = 9.162933E-02, C = −6.322692E-03, D = 1.044429, E = −0.7937332, U = 0.028

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Table IV Results of Two-Term Sellmeier Equation Fit for Sample B, Where A1 = 1.52323, A2 = 8.666754E-03, U1 = 3.704935E-03, U2 = 0.138046

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Table V Results of Herzberger Equation Fit for Sample B, Where A = 2.076329, B = −9.456398E-02, C = 7.512031E-03, D = −9.824461, E = 7.101964, U = 0.028

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Table VI Final Results

Equations (4)

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n 1 sin θ 1 = n 2 sin θ 2 ,
θ 2 max = arcsin ( n 1 n 2 ) ( θ 1 = 90 ° ) .
n = 1 + A 1 × λ 2 λ 2 U 1 2 + A 2 × λ 2 λ 2 U 2 2 ,
n = A + B λ 2 U + C ( λ 2 U ) 2 + ( D + E × λ 2 ) × λ 2 .

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