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Optical constants of OHARA - LAL (Lanthanum, low-index)
S-LAL13

Wavelength: µm
 (0.29 – 2.4)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{0.980071267λ^2}{λ^2-0.00389123698}+\frac{0.832904776λ^2}{λ^2-0.0189164592}+\frac{1.28111995λ^2}{λ^2-98.9052676}$$

Conditions & Spec sheet

    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: 5.88e-06 1.5e-08 -4e-11 3.13e-07 5.37e-10 0.292
    n_d: 1.693501
    V_d: 53.205327
    glass_code: 694532
    glass_status: standard
    density: 3.6 g/cm3
    coefficient_of_thermal_expansion_1: 5.7e-06 K-1
    coefficient_of_thermal_expansion_2: 7.2e-06 K-1
    ΔP_gF: -0.0081
    climatic_resistance: 1.0
    acid_resistance: 52.0
    phosphate_resistance: 3.0

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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