K-LaKn13 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.640999 n_e = 1.643687	V_d = 56.84 V_e = 56.56	n_F - n_C = 0.011276 n_F' - n_C' = 0.011379	Coloring: 0.32 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6463583 C2 = -0.010354365 C3 = 0.016498511 C4 = 0.0002653606 C5 = 0.0000030158827 C6 = 0.00000010423582

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.628500
n _s	1.631586
n _r	1.635644
n _C	1.637582
n _C'	1.638125
n _0.6328	1.638633
n _D	1.640899
n _d	1.640999
n _e	1.643687
n _F	1.648859
n _F'	1.649504
n _g	1.655029
n _h	1.660164
n _i	1.668940
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8054
P_C,A'	0.3440
P_d,C	0.3030
P_e,C	0.5413
P_g,d	1.2441
P_g,F	0.5471
P_h,g	0.4554
P_i,g	1.2336
P_C',t	0.8535
P_e,C'	0.4932
P_F',e	0.5158
P_i,F'	1.7235

transmittance: 10 mm
τ_0.32	0.069
τ_0.33	0.382
τ_0.34	0.669
τ_0.35	0.833
τ_0.36	0.915
τ_0.37	0.954
τ_0.38	0.974
τ_0.39	0.981
τ_0.4	0.988
τ_0.42	0.99
τ_0.44	0.99
τ_0.46	0.992
τ_0.48	0.994
τ_0.5	0.995
τ_0.55	0.995
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.997
τ_1.5	0.997
τ₂	0.981

transmittance: 25 mm
τ_0.33	0.09
τ_0.34	0.366
τ_0.35	0.633
τ_0.36	0.801
τ_0.37	0.89
τ_0.38	0.937
τ_0.39	0.954
τ_0.4	0.971
τ_0.42	0.975
τ_0.44	0.975
τ_0.46	0.982
τ_0.48	0.985
τ_0.5	0.989
τ_0.55	0.989
τ_0.6	0.992
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.992
τ_1.5	0.992
τ₂	0.954

Poisson coef.: 0.275
Rigidity: 347 Pa*10⁸
Young module: 886 Pa*10⁸
Knoop hardness: 572
Abrasion: 160

Climatic resistance: 1
Resistance to acids: 4

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