K-LaK12 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.677908 n_e = 1.680819	V_d = 55.48 V_e = 55.22	n_F - n_C = 0.012217 n_F' - n_C' = 0.012328	Coloring: 0.31 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.7624188 C2 = -0.01072042 C3 = 0.019279626 C4 = -0.000037377214 C5 = 0.000054439104 C6 = -0.0000028035955

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.664379
n _s	1.667707
n _r	1.672104
n _C	1.674205
n _C'	1.674794
n _0.6328	1.675344
n _D	1.677799
n _d	1.677908
n _e	1.680819
n _F	1.686423
n _F'	1.687122
n _g	1.693113
n _h	1.698678
n _i	1.708130
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8042
P_C,A'	0.3442
P_d,C	0.3030
P_e,C	0.5413
P_g,d	1.2445
P_g,F	0.5476
P_h,g	0.4555
P_i,g	1.2290
P_C',t	0.8523
P_e,C'	0.4931
P_F',e	0.5159
P_i,F'	1.7194

transmittance: 10 mm
τ_0.31	0.022
τ_0.32	0.138
τ_0.33	0.35
τ_0.34	0.56
τ_0.35	0.727
τ_0.36	0.835
τ_0.37	0.905
τ_0.38	0.94
τ_0.39	0.96
τ_0.4	0.971
τ_0.42	0.981
τ_0.44	0.981
τ_0.46	0.985
τ_0.48	0.985
τ_0.5	0.988
τ_0.55	0.99
τ_0.6	0.992
τ_0.65	0.994
τ_0.7	0.995
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.997
τ₂	0.971

transmittance: 25 mm
τ_0.33	0.072
τ_0.34	0.235
τ_0.35	0.45
τ_0.36	0.638
τ_0.37	0.78
τ_0.38	0.857
τ_0.39	0.903
τ_0.4	0.93
τ_0.42	0.954
τ_0.44	0.954
τ_0.46	0.964
τ_0.48	0.964
τ_0.5	0.971
τ_0.55	0.975
τ_0.6	0.982
τ_0.65	0.985
τ_0.7	0.989
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.992
τ₂	0.93

Poisson coef.: 0.269
Rigidity: 363 Pa*10⁸
Young module: 921 Pa*10⁸
Knoop hardness: 539
Abrasion: 150

Climatic resistance: 1
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	81