K-LaSFn2 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.804998 n_e = 1.809829	V_d = 39.57 V_e = 39.32	n_F - n_C = 0.020340 n_F' - n_C' = 0.020591	Coloring: 0.34 - 0.41 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 3.171368073468 C2 = -0.01717747334624 C3 = 0.0271367100213 C4 = 0.002066919132631 C5 = -0.0001740577422424 C6 = 0.00001228439407441

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.783789
n _s	1.788792
n _r	1.795619
n _C	1.798971
n _C'	1.799919
n _0.6328	1.800809
n _D	1.804819
n _d	1.804998
n _e	1.809829
n _F	1.819311
n _F'	1.820511
n _g	1.830926
n _h	1.840871
n _i	1.858649
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7463
P_C,A'	0.3270
P_d,C	0.2963
P_e,C	0.5338
P_g,d	1.2746
P_g,F	0.5709
P_h,g	0.4889
P_i,g	1.3629
P_C',t	0.7929
P_e,C'	0.4871
P_F',e	0.5251
P_i,F'	1.8749

transmittance: 10 mm
τ_0.32	0.001
τ_0.33	0.044
τ_0.34	0.261
τ_0.35	0.517
τ_0.36	0.7
τ_0.37	0.811
τ_0.38	0.882
τ_0.39	0.924
τ_0.4	0.949
τ_0.42	0.97
τ_0.44	0.982
τ_0.46	0.988
τ_0.48	0.993
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.976

transmittance: 25 mm
τ_0.34	0.035
τ_0.35	0.193
τ_0.36	0.41
τ_0.37	0.593
τ_0.38	0.731
τ_0.39	0.821
τ_0.4	0.878
τ_0.42	0.927
τ_0.44	0.956
τ_0.46	0.971
τ_0.48	0.982
τ_0.5	0.994
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.94

Poisson coef.: 0.286
Rigidity: 447 Pa*10⁸
Young module: 1149 Pa*10⁸
Knoop hardness: 613
Abrasion: 74

Climatic resistance: 1
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	70