LaSFn3 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.799500 n_e = 1.803993	V_d = 42.28 V_e = 42.02	n_F - n_C = 0.018907 n_F' - n_C' = 0.019129	Coloring: 0.34 - 0.41 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 3.1500372 C2 = -0.011882293 C3 = 0.030091056 C4 = 0.00053837878 C5 = 0.000019843423 C6 = 0.0000014717086

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.779779
n _s	1.784357
n _r	1.790735
n _C	1.793872
n _C'	1.794759
n _0.6328	1.795591
n _D	1.799333
n _d	1.799500
n _e	1.803993
n _F	1.812780
n _F'	1.813889
n _g	1.823497
n _h	1.832621
n _i	1.848699
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7453
P_C,A'	0.3294
P_d,C	0.2976
P_e,C	0.5352
P_g,d	1.2691
P_g,F	0.5667
P_h,g	0.4826
P_i,g	1.3329
P_C',t	0.7922
P_e,C'	0.4883
P_F',e	0.5233
P_i,F'	1.8410

transmittance: 10 mm
τ_0.34	0.114
τ_0.35	0.371
τ_0.36	0.6
τ_0.37	0.766
τ_0.38	0.853
τ_0.39	0.905
τ_0.4	0.933
τ_0.42	0.957
τ_0.44	0.968
τ_0.46	0.975
τ_0.48	0.982
τ_0.5	0.985
τ_0.55	0.988
τ_0.6	0.99
τ_0.65	0.994
τ_0.7	0.995
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.995
τ₂	0.974

transmittance: 25 mm
τ_0.35	0.084
τ_0.36	0.279
τ_0.37	0.514
τ_0.38	0.672
τ_0.39	0.78
τ_0.4	0.842
τ_0.42	0.896
τ_0.44	0.923
τ_0.46	0.94
τ_0.48	0.957
τ_0.5	0.964
τ_0.55	0.971
τ_0.6	0.975
τ_0.65	0.985
τ_0.7	0.989
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.989
τ₂	0.937

Poisson coef.: 0.296
Rigidity: 432 Pa*10⁸
Young module: 1121 Pa*10⁸
Knoop hardness: 571
Abrasion: 90

Climatic resistance: 1
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	86