SF9 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.654461 n_e = 1.659048	V_d = 33.78 V_e = 33.53	n_F - n_C = 0.019371 n_F' - n_C' = 0.019649	Coloring: 0.33 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6551486 C2 = -0.0080264838 C3 = 0.026925248 C4 = 0.00075907464 C5 = 0.0000083286411 C6 = 0.0000042920006

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.635179
n _s	1.639475
n _r	1.645680
n _C	1.648796
n _C'	1.649682
n _0.6328	1.650516
n _D	1.654292
n _d	1.654461
n _e	1.659048
n _F	1.668167
n _F'	1.669332
n _g	1.679559
n _h	1.689509
n _i	1.707650
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7028
P_C,A'	0.3173
P_d,C	0.2924
P_e,C	0.5292
P_g,d	1.2956
P_g,F	0.5880
P_h,g	0.5136
P_i,g	1.4500
P_C',t	0.7486
P_e,C'	0.4834
P_F',e	0.5308
P_i,F'	1.9780

transmittance: 10 mm
τ_0.33	0.01
τ_0.34	0.236
τ_0.35	0.625
τ_0.36	0.815
τ_0.37	0.905
τ_0.38	0.943
τ_0.39	0.967
τ_0.4	0.975
τ_0.42	0.982
τ_0.44	0.985
τ_0.46	0.988
τ_0.48	0.99
τ_0.5	0.991
τ_0.55	0.994
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	0.998
τ₂	0.981

transmittance: 25 mm
τ_0.34	0.027
τ_0.35	0.309
τ_0.36	0.6
τ_0.37	0.78
τ_0.38	0.864
τ_0.39	0.92
τ_0.4	0.94
τ_0.42	0.957
τ_0.44	0.964
τ_0.46	0.971
τ_0.48	0.975
τ_0.5	0.978
τ_0.55	0.985
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	0.996
τ₂	0.954

Poisson coef.: 0.227
Rigidity: 232 Pa*10⁸
Young module: 570 Pa*10⁸
Knoop hardness: 389
Abrasion: 160

Climatic resistance: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	86