LaSFn19 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.794998 n_e = 1.799184	V_d = 45.19 V_e = 44.94	n_F - n_C = 0.017591 n_F' - n_C' = 0.017782	Coloring: 0.33 - 0.40 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 3.143192 C2 = -0.014183025 C3 = 0.026385108 C4 = 0.0010026117 C5 = -0.000059283957 C6 = 0.0000045866331

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.776279
n _s	1.780728
n _r	1.786782
n _C	1.789732
n _C'	1.790564
n _0.6328	1.791343
n _D	1.794842
n _d	1.794998
n _e	1.799184
n _F	1.807323
n _F'	1.808346
n _g	1.817157
n _h	1.825451
n _i	1.839919
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7647
P_C,A'	0.3337
P_d,C	0.2993
P_e,C	0.5373
P_g,d	1.2597
P_g,F	0.5590
P_h,g	0.4714
P_i,g	1.2939
P_C',t	0.8119
P_e,C'	0.4900
P_F',e	0.5208
P_i,F'	1.7948

transmittance: 10 mm
τ_0.33	0.029
τ_0.34	0.179
τ_0.35	0.425
τ_0.36	0.608
τ_0.37	0.753
τ_0.38	0.842
τ_0.39	0.898
τ_0.4	0.932
τ_0.42	0.961
τ_0.44	0.971
τ_0.46	0.978
τ_0.48	0.982
τ_0.5	0.985
τ_0.55	0.99
τ_0.6	0.991
τ_0.65	0.992
τ_0.7	0.995
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.978

transmittance: 25 mm
τ_0.34	0.013
τ_0.35	0.118
τ_0.36	0.288
τ_0.37	0.492
τ_0.38	0.651
τ_0.39	0.765
τ_0.4	0.838
τ_0.42	0.906
τ_0.44	0.93
τ_0.46	0.947
τ_0.48	0.957
τ_0.5	0.964
τ_0.55	0.975
τ_0.6	0.978
τ_0.65	0.982
τ_0.7	0.989
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.947

Poisson coef.: 0.299
Rigidity: 451 Pa*10⁸
Young module: 1173 Pa*10⁸
Knoop hardness: 615
Abrasion: 80

Climatic resistance: 1
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	77