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Optical constants of OHARA - LAM (Lanthanum, medium-index)
S-LAM52

Wavelength: µm
 (0.35 – 2.4)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.73442942λ^2}{λ^2-0.0100690928}+\frac{0.15155391λ^2}{λ^2-0.0470634701}+\frac{1.46225433λ^2}{λ^2-140.084396}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 25.0 °C
coefficients_of_thermal_dispersion: -1.33e-06 1.04e-08 -3.33e-11 6.18e-07 7.64e-10 0.246
n_d: 1.720000
V_d: 43.689812
glass_code: 720437
glass_status: standard
density: 3.95 g/cm3
coefficient_of_thermal_expansion_1: 7.7e-06 K-1
coefficient_of_thermal_expansion_2: 8.8e-06 K-1
ΔP_gF: -0.0009
climatic_resistance: 2.0
acid_resistance: 51.2
phosphate_resistance: 1.2

Comments

Recommended

References

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

Data

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

INFO

Ohara Group

Ohara Group is an international group of companies with headquarters in Japan and subsidiaries in Japan (Ohara, Inc.), United States (Ohara Corporation), and Germany (Ohara, GmbH). Ohara manufactures optical and electronic products and also offers measurement services, in particular measurement of refractive indices of solids and liquids.

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