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Optical constants of OHARA - Low Tg glasses for precision molding
L-LAH94

Wavelength: µm
 (0.350 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{2.0062142λ^2}{λ^2-0.0105499238}+\frac{0.347029888λ^2}{λ^2-0.0445845013}+\frac{1.41688382λ^2}{λ^2-105.99525}$$

Conditions & Spec sheet

    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 25.0 °C
    coefficients_of_thermal_dispersion: 3.67e-06 9.08e-09 6.26e-13 4.07e-07 4.14e-10 0.194
    n_d: 1.860999
    V_d: 37.097767
    density: 4.89 g/cm3
    coefficient_of_thermal_expansion_1: 6.2e-06 K-1
    ΔP_gF: -0.0029
    climatic_resistance: 3.0
    acid_resistance: 51.2
    phosphate_resistance: 2.0

Comments

Low Softening Temperature

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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