SF13 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.740769 n_e = 1.747079	V_d = 27.70 V_e = 27.48	n_F - n_C = 0.026736 n_F' - n_C' = 0.027183	Coloring: 0.37 - 0.42 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 2.9192174 C2 = -0.011963334 C3 = 0.032996433 C4 = 0.002736291 C5 = -0.00020475207 C6 = 0.000023181362

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.715060
n _s	1.720672
n _r	1.728889
n _C	1.733072
n _C'	1.734269
n _0.6328	1.735397
n _D	1.740538
n _d	1.740769
n _e	1.747079
n _F	1.759808
n _F'	1.761452
n _g	1.776069
n _h	1.790650
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6736
P_C,A'	0.3073
P_d,C	0.2879
P_e,C	0.5238
P_g,d	1.3202
P_g,F	0.6081
P_h,g	0.5453
P_i,g	-----
P_C',t	0.7184
P_e,C'	0.4791
P_F',e	0.5375
P_i,F'	-----

transmittance: 10 mm
τ_0.37	0.013
τ_0.38	0.232
τ_0.39	0.564
τ_0.4	0.796
τ_0.42	0.936
τ_0.44	0.968
τ_0.46	0.975
τ_0.48	0.981
τ_0.5	0.985
τ_0.55	0.99
τ_0.6	0.994
τ_0.65	0.995
τ_0.7	0.995
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.997
τ₂	0.975

transmittance: 25 mm
τ_0.38	0.026
τ_0.39	0.239
τ_0.4	0.566
τ_0.42	0.848
τ_0.44	0.923
τ_0.46	0.94
τ_0.48	0.954
τ_0.5	0.964
τ_0.55	0.975
τ_0.6	0.985
τ_0.65	0.989
τ_0.7	0.989
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.992
τ₂	0.94

Poisson coef.: 0.235
Rigidity: 243 Pa*10⁸
Young module: 600 Pa*10⁸
Knoop hardness: 390
Abrasion: 190

Climatic resistance: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	85