SF11 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.784719 n_e = 1.791912	V_d = 25.71 V_e = 25.50	n_F - n_C = 0.030519 n_F' - n_C' = 0.031050	Coloring: 0.38 - 0.43 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 3.0508708 C2 = -0.0097242185 C3 = 0.040955581 C4 = 0.0024712336 C5 = -0.00013840801 C6 = 0.000024229056

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.755829
n _s	1.761995
n _r	1.771231
n _C	1.775969
n _C'	1.777328
n _0.6328	1.778609
n _D	1.784456
n _d	1.784719
n _e	1.791912
n _F	1.806489
n _F'	1.808378
n _g	1.825250
n _h	1.842209
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6598
P_C,A'	0.3043
P_d,C	0.2866
P_e,C	0.5223
P_g,d	1.3280
P_g,F	0.6147
P_h,g	0.5556
P_i,g	-----
P_C',t	0.7044
P_e,C'	0.4778
P_F',e	0.5395
P_i,F'	-----

transmittance: 10 mm
τ_0.38	0.054
τ_0.39	0.473
τ_0.4	0.682
τ_0.42	0.911
τ_0.44	0.961
τ_0.46	0.975
τ_0.48	0.982
τ_0.5	0.985
τ_0.55	0.991
τ_0.6	0.992
τ_0.65	0.994
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.981

transmittance: 25 mm
τ_0.39	0.103
τ_0.4	0.384
τ_0.42	0.792
τ_0.44	0.906
τ_0.46	0.94
τ_0.48	0.957
τ_0.5	0.964
τ_0.55	0.978
τ_0.6	0.982
τ_0.65	0.985
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.954

Poisson coef.: 0.242
Rigidity: 245 Pa*10⁸
Young module: 609 Pa*10⁸
Knoop hardness: 409
Abrasion: 230

Climatic resistance: 1
Resistance to acids: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	81