K-LaSFn6 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.802352 n_e = 1.806440	V_d = 46.70 V_e = 46.46	n_F - n_C = 0.017177 n_F' - n_C' = 0.017354	Coloring: 0.32 - 0.39 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 3.1695544 C2 = -0.014517051 C3 = 0.027644048 C4 = 0.00039048818 C5 = 0.000023230829 C6 = 0.00000023865962

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.783789
n _s	1.788264
n _r	1.794281
n _C	1.797189
n _C'	1.798007
n _0.6328	1.798772
n _D	1.802200
n _d	1.802352
n _e	1.806440
n _F	1.814366
n _F'	1.815361
n _g	1.823930
n _h	1.831989
n _i	1.845990
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7800
P_C,A'	0.3377
P_d,C	0.3005
P_e,C	0.5385
P_g,d	1.2562
P_g,F	0.5567
P_h,g	0.4691
P_i,g	1.2841
P_C',t	0.8276
P_e,C'	0.4909
P_F',e	0.5193
P_i,F'	1.7830

transmittance: 10 mm
τ_0.31	0.005
τ_0.32	0.108
τ_0.33	0.348
τ_0.34	0.57
τ_0.35	0.725
τ_0.36	0.82
τ_0.37	0.874
τ_0.38	0.913
τ_0.39	0.933
τ_0.4	0.947
τ_0.42	0.96
τ_0.44	0.966
τ_0.46	0.97
τ_0.48	0.973
τ_0.5	0.985
τ_0.55	0.993
τ_0.6	0.995
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	0.971

transmittance: 25 mm
τ_0.32	0.003
τ_0.33	0.071
τ_0.34	0.245
τ_0.35	0.448
τ_0.36	0.609
τ_0.37	0.715
τ_0.38	0.797
τ_0.39	0.841
τ_0.4	0.873
τ_0.42	0.903
τ_0.44	0.918
τ_0.46	0.928
τ_0.48	0.935
τ_0.5	0.958
τ_0.55	0.98
τ_0.6	0.987
τ_0.65	0.996
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.93

Poisson coef.: 0.295
Rigidity: 475 Pa*10⁸
Young module: 1231 Pa*10⁸
Knoop hardness: 587
Abrasion: 60

Climatic resistance: 1
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	74