SF12 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.648313 n_e = 1.652858	V_d = 33.76 V_e = 33.52	n_F - n_C = 0.019198 n_F' - n_C' = 0.019474	Coloring: 0.35 - 0.39 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 2.6364208 C2 = -0.0083154035 C3 = 0.026282416 C4 = 0.00084084598 C5 = -0.0000074551347 C6 = 0.0000054381023

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.629179
n _s	1.633454
n _r	1.639611
n _C	1.642699
n _C'	1.643577
n _0.6328	1.644404
n _D	1.648145
n _d	1.648313
n _e	1.652858
n _F	1.661897
n _F'	1.663052
n _g	1.673200
n _h	1.683089
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7041
P_C,A'	0.3174
P_d,C	0.2924
P_e,C	0.5291
P_g,d	1.2962
P_g,F	0.5887
P_h,g	0.5151
P_i,g	-----
P_C',t	0.7499
P_e,C'	0.4834
P_F',e	0.5309
P_i,F'	-----

transmittance: 10 mm
τ_0.35	0.015
τ_0.36	0.221
τ_0.37	0.57
τ_0.38	0.799
τ_0.39	0.915
τ_0.4	0.964
τ_0.42	0.992
τ_0.44	0.997
τ_0.46	0.997
τ_0.48	0.997
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.995
τ_1.5	0.981
τ₂	0.933

transmittance: 25 mm
τ_0.36	0.023
τ_0.37	0.245
τ_0.38	0.571
τ_0.39	0.801
τ_0.4	0.913
τ_0.42	0.982
τ_0.44	0.992
τ_0.46	0.992
τ_0.48	0.992
τ_0.5	0.992
τ_0.55	0.996
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.989
τ_1.5	0.954
τ₂	0.842

Poisson coef.: 0.233
Rigidity: 231 Pa*10⁸
Young module: 569 Pa*10⁸
Knoop hardness: 400
Abrasion: 170

Climatic resistance: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	96