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Optical constants of SCHOTT - Obsolete glasses
LAKL12

Wavelength: µm
 (0.32 – 2.5)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.28115389λ^2}{λ^2-0.00636439821}+\frac{0.482607607λ^2}{λ^2-0.0213764262}+\frac{1.16553538λ^2}{λ^2-93.2771532}$$

Comments

was replaced by N-LAK12

Data

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

Additional information

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 2.26e-06 1.05e-08 -8.4e-12 4.57e-07 5.86e-10 0.21
n_d: 1.6779
V_d: 54.92
glass_code: 678549.332
glass_status: preferred
density: 3.32 g/cm3
coefficient_of_thermal_expansion_1: 6.8e-06 K-1
coefficient_of_thermal_expansion_2: 8e-06 K-1
ΔP_gF: -0.0062
climatic_resistance: 3.0
stain_resistance: 3.0
acid_resistance: 53.3
alkali_resistance: 2.2
phosphate_resistance: 3.3

References

SCHOTT Zemax catalog 2015-07-22

More info - wiki

SCHOTT AG is a German glass manufacturer. SCHOTT also publishes a glass catalog (SCHOTT Optical Glass Datasheets), which is a standard reference for the properties of many optical glasses.

External links