SFn1 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.720215 n_e = 1.726023	V_d = 29.30 V_e = 29.08	n_F - n_C = 0.024572 n_F' - n_C' = 0.024961	Coloring: 0.35 - 0.40 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.8555571 C2 = -0.010282883 C3 = 0.031719134 C4 = 0.002043076 C5 = -0.00011962118 C6 = 0.000014485728

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.696369
n _s	1.701584
n _r	1.709221
n _C	1.713100
n _C'	1.714208
n _0.6328	1.715252
n _D	1.720001
n _d	1.720215
n _e	1.726023
n _F	1.737673
n _F'	1.739170
n _g	1.752394
n _h	1.765412
n _i	1.789619
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6808
P_C,A'	0.3103
P_d,C	0.2895
P_e,C	0.5259
P_g,d	1.3095
P_g,F	0.5990
P_h,g	0.5297
P_i,g	1.5148
P_C',t	0.7259
P_e,C'	0.4808
P_F',e	0.5350
P_i,F'	2.0530

transmittance: 10 mm
τ_0.33	0.013
τ_0.34	0.232
τ_0.35	0.54
τ_0.36	0.73
τ_0.37	0.819
τ_0.38	0.876
τ_0.39	0.909
τ_0.4	0.929
τ_0.42	0.951
τ_0.44	0.96
τ_0.46	0.964
τ_0.48	0.975
τ_0.5	0.975
τ_0.55	0.982
τ_0.6	0.985
τ_0.65	0.99
τ_0.7	0.992
τ_0.8	0.998
τ_1.06	0.992
τ_1.5	0.982
τ₂	0.954

transmittance: 25 mm
τ_0.34	0.026
τ_0.35	0.214
τ_0.36	0.456
τ_0.37	0.608
τ_0.38	0.719
τ_0.39	0.789
τ_0.4	0.832
τ_0.42	0.883
τ_0.44	0.903
τ_0.46	0.913
τ_0.48	0.94
τ_0.5	0.94
τ_0.55	0.957
τ_0.6	0.964
τ_0.65	0.975
τ_0.7	0.982
τ_0.8	0.996
τ_1.06	0.982
τ_1.5	0.957
τ₂	0.89

Poisson coef.: 0.236
Rigidity: 221 Pa*10⁸
Young module: 545 Pa*10⁸
Knoop hardness: 379
Abrasion: 190

Climatic resistance: 1
Resistance to acids: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	88