SSK4 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.617650 n_e = 1.620319	V_d = 55.11 V_e = 54.83	n_F - n_C = 0.011206 n_F' - n_C' = 0.011313	Coloring: 0.31 - 0.35 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5682232 C2 = -0.0080686132 C3 = 0.018062698 C4 = -0.00035372055 C5 = 0.000096878774 C6 = -0.0000049968865

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.605380
n _s	1.608354
n _r	1.612346
n _C	1.614263
n _C'	1.614801
n _0.6328	1.615304
n _D	1.617551
n _d	1.617650
n _e	1.620319
n _F	1.625469
n _F'	1.626114
n _g	1.631648
n _h	1.636805
n _i	1.645568
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7927
P_C,A'	0.3420
P_d,C	0.3022
P_e,C	0.5403
P_g,d	1.2490
P_g,F	0.5513
P_h,g	0.4602
P_i,g	1.2422
P_C',t	0.8407
P_e,C'	0.4923
P_F',e	0.5171
P_i,F'	1.7359

transmittance: 10 mm
τ_0.31	0.04
τ_0.32	0.329
τ_0.33	0.663
τ_0.34	0.819
τ_0.35	0.911
τ_0.36	0.951
τ_0.37	0.968
τ_0.38	0.975
τ_0.39	0.981
τ_0.4	0.985
τ_0.42	0.985
τ_0.44	0.988
τ_0.46	0.988
τ_0.48	0.991
τ_0.5	0.992
τ_0.55	0.995
τ_0.6	0.995
τ_0.65	0.995
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.992
τ_1.5	0.99
τ₂	0.965

transmittance: 25 mm
τ_0.32	0.062
τ_0.33	0.357
τ_0.34	0.608
τ_0.35	0.792
τ_0.36	0.883
τ_0.37	0.923
τ_0.38	0.94
τ_0.39	0.954
τ_0.4	0.964
τ_0.42	0.964
τ_0.44	0.971
τ_0.46	0.971
τ_0.48	0.978
τ_0.5	0.982
τ_0.55	0.989
τ_0.6	0.989
τ_0.65	0.989
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.982
τ_1.5	0.975
τ₂	0.916

Poisson coef.: 0.296
Rigidity: 271 Pa*10⁸
Young module: 703 Pa*10⁸
Knoop hardness: 510
Abrasion: 140

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	73