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Optical constants of OHARA - PHM (Phosphate, medium-index)
S-PHM52

Wavelength: µm
 (0.33 – 2.4)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.0996655λ^2}{λ^2-0.0132718559}+\frac{0.478125422λ^2}{λ^2+0.000601649685}+\frac{1.13214074λ^2}{λ^2-130.595472}$$

Comments

Recommended

Data

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

Additional information

n_is_absolute: false
λ_is_vacuum: false
temperature: 25.0 °C
coefficients_of_thermal_dispersion: -1.15e-05 5.4e-09 -3.69e-11 4.44e-07 9.12e-10 0.166
n_d: 1.618000
V_d: 63.333504
glass_code: 618634
glass_status: standard
density: 3.67 g/cm3
coefficient_of_thermal_expansion_1: 1.01e-05 K-1
coefficient_of_thermal_expansion_2: 1.2e-05 K-1
ΔP_gF: 0.0051
climatic_resistance: 2.0
acid_resistance: 5.0
phosphate_resistance: 4.0

References

1) OHARA optical glass datasheets 2015-12-01
2) OHARA Zemax catalog 2015-12-01

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