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Optical constants of SUMITA - BPG
K-BPG2

Wavelength: µm
 (0.330 – 2.000)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.3909284-0.0090241173λ^{2}+0.014036614λ^{-2}+0.00033108428λ^{-4}-9.985229\text{×}10^{-06}λ^{-6}+1.1070906\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 6.45e-06 1.89e-08 -2.11e-10 5.53e-07 8.99e-10 0.207
n_d: 1.55920
V_d: 53.9
glass_code: 559539
density: 2.72 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.4e-06 K-1
ΔP_gF: -0.0005
climatic_resistance: 1.0
acid_resistance: 1.0

References

SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

INFO

SUMITA Optical Glass, Inc.

SUMITA Optical Glass, Inc. is a Japanese glass manufacturer

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