SFn3 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.846659 n_e = 1.855017	V_d = 23.88 V_e = 23.69	n_F - n_C = 0.035449 n_F' - n_C' = 0.036079	Coloring: 0.37 - 0.45 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 3.2601657 C2 = -0.015627611 C3 = 0.040634475 C4 = 0.0056186021 C5 = -0.00052724573 C6 = 0.000047554561

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.813420
n _s	1.820503
n _r	1.831077
n _C	1.836533
n _C'	1.838101
n _0.6328	1.839581
n _D	1.846353
n _d	1.846659
n _e	1.855017
n _F	1.871982
n _F'	1.874180
n _g	1.893788
n _h	1.913470
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6520
P_C,A'	0.3010
P_d,C	0.2856
P_e,C	0.5214
P_g,d	1.3295
P_g,F	0.6151
P_h,g	0.5552
P_i,g	-----
P_C',t	0.6962
P_e,C'	0.4771
P_F',e	0.5405
P_i,F'	-----

transmittance: 10 mm
τ_0.37	0.086
τ_0.38	0.314
τ_0.39	0.528
τ_0.4	0.692
τ_0.42	0.846
τ_0.44	0.922
τ_0.46	0.957
τ_0.48	0.971
τ_0.5	0.978
τ_0.55	0.988
τ_0.6	0.99
τ_0.65	0.991
τ_0.7	0.994
τ_0.8	0.997
τ_1.06	0.997
τ_1.5	0.99
τ₂	0.971

transmittance: 25 mm
τ_0.38	0.055
τ_0.39	0.203
τ_0.4	0.398
τ_0.42	0.659
τ_0.44	0.817
τ_0.46	0.896
τ_0.48	0.93
τ_0.5	0.947
τ_0.55	0.971
τ_0.6	0.975
τ_0.65	0.978
τ_0.7	0.985
τ_0.8	0.992
τ_1.06	0.982
τ_1.5	0.975
τ₂	0.93

Poisson coef.: 0.258
Rigidity: 215 Pa*10⁸
Young module: 540 Pa*10⁸
Knoop hardness: 319
Abrasion: 310

Climatic resistance: 1
Resistance to acids: 4

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