SF3 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.739998 n_e = 1.746204	V_d = 28.17 V_e = 27.96	n_F - n_C = 0.026262 n_F' - n_C' = 0.026686	Coloring: 0.36 - 0.40 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 2.918059 C2 = -0.011559536 C3 = 0.032369401 C4 = 0.0028002688 C5 = -0.00021470814 C6 = 0.000021127003

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.714679
n _s	1.720195
n _r	1.728290
n _C	1.732414
n _C'	1.733594
n _0.6328	1.734706
n _D	1.739770
n _d	1.739998
n _e	1.746204
n _F	1.758676
n _F'	1.760281
n _g	1.774480
n _h	1.788509
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6752
P_C,A'	0.3084
P_d,C	0.2887
P_e,C	0.5250
P_g,d	1.3130
P_g,F	0.6018
P_h,g	0.5341
P_i,g	-----
P_C',t	0.7202
P_e,C'	0.4801
P_F',e	0.5360
P_i,F'	-----

transmittance: 10 mm
τ_0.36	0.154
τ_0.37	0.505
τ_0.38	0.759
τ_0.39	0.88
τ_0.4	0.934
τ_0.42	0.971
τ_0.44	0.982
τ_0.46	0.99
τ_0.48	0.994
τ_0.5	0.995
τ_0.55	0.997
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.982
τ_1.5	0.971
τ₂	0.943

transmittance: 25 mm
τ_0.37	0.181
τ_0.38	0.503
τ_0.39	0.728
τ_0.4	0.845
τ_0.42	0.93
τ_0.44	0.957
τ_0.46	0.975
τ_0.48	0.985
τ_0.5	0.989
τ_0.55	0.992
τ_0.6	0.992
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.957
τ_1.5	0.93
τ₂	0.864

Poisson coef.: 0.236
Rigidity: 225 Pa*10⁸
Young module: 555 Pa*10⁸
Knoop hardness: 372
Abrasion: 200

Climatic resistance: 1
Resistance to acids: 2

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