SF1 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.717359 n_e = 1.723106	V_d = 29.50 V_e = 29.28	n_F - n_C = 0.024309 n_F' - n_C' = 0.024690	Coloring: 0.34 - 0.39 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.8460693 C2 = -0.0098036142 C3 = 0.031907443 C4 = 0.001884746 C5 = -0.00010548754 C6 = 0.00001370142

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.693730
n _s	1.698894
n _r	1.706468
n _C	1.710312
n _C'	1.711410
n _0.6328	1.712445
n _D	1.717148
n _d	1.717359
n _e	1.723106
n _F	1.734622
n _F'	1.736101
n _g	1.749157
n _h	1.762000
n _i	1.785859
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6821
P_C,A'	0.3109
P_d,C	0.2898
P_e,C	0.5263
P_g,d	1.3080
P_g,F	0.5979
P_h,g	0.5283
P_i,g	1.5097
P_C',t	0.7273
P_e,C'	0.4811
P_F',e	0.5345
P_i,F'	2.0468

transmittance: 10 mm
τ_0.34	0.129
τ_0.35	0.389
τ_0.36	0.68
τ_0.37	0.799
τ_0.38	0.885
τ_0.39	0.938
τ_0.4	0.953
τ_0.42	0.982
τ_0.44	0.984
τ_0.46	0.985
τ_0.48	0.988
τ_0.5	0.99
τ_0.55	0.994
τ_0.6	0.995
τ_0.65	0.997
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.982

transmittance: 25 mm
τ_0.34	0.01
τ_0.35	0.13
τ_0.36	0.35
τ_0.37	0.58
τ_0.38	0.732
τ_0.39	0.831
τ_0.4	0.9
τ_0.42	0.957
τ_0.44	0.957
τ_0.46	0.964
τ_0.48	0.971
τ_0.5	0.975
τ_0.55	0.985
τ_0.6	0.989
τ_0.65	0.992
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.957

Poisson coef.: 0.237
Rigidity: 221 Pa*10⁸
Young module: 547 Pa*10⁸
Knoop hardness: 351
Abrasion: 190

Climatic resistance: 1
Resistance to acids: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	89