SSK2 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.622298 n_e = 1.625086	V_d = 53.14 V_e = 52.85	n_F - n_C = 0.011709 n_F' - n_C' = 0.011827	Coloring: 0.32 - 0.35 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5838727 C2 = -0.0093374301 C3 = 0.016662365 C4 = 0.00035690825 C5 = -0.0000047300773 C6 = 0.00000084542327

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.609600
n _s	1.612671
n _r	1.616786
n _C	1.618773
n _C'	1.619331
n _0.6328	1.619854
n _D	1.622194
n _d	1.622298
n _e	1.625086
n _F	1.630483
n _F'	1.631159
n _g	1.636969
n _h	1.642409
n _i	1.651810
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7834
P_C,A'	0.3385
P_d,C	0.3010
P_e,C	0.5391
P_g,d	1.2528
P_g,F	0.5539
P_h,g	0.4646
P_i,g	1.2673
P_C',t	0.8311
P_e,C'	0.4914
P_F',e	0.5185
P_i,F'	1.7635

transmittance: 10 mm
τ_0.32	0.1
τ_0.33	0.459
τ_0.34	0.746
τ_0.35	0.883
τ_0.36	0.943
τ_0.37	0.971
τ_0.38	0.977
τ_0.39	0.982
τ_0.4	0.988
τ_0.42	0.99
τ_0.44	0.99
τ_0.46	0.99
τ_0.48	0.992
τ_0.5	0.992
τ_0.55	0.995
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.994
τ_1.5	0.982
τ₂	0.96

transmittance: 25 mm
τ_0.33	0.142
τ_0.34	0.481
τ_0.35	0.733
τ_0.36	0.864
τ_0.37	0.93
τ_0.38	0.944
τ_0.39	0.957
τ_0.4	0.971
τ_0.42	0.975
τ_0.44	0.975
τ_0.46	0.975
τ_0.48	0.982
τ_0.5	0.982
τ_0.55	0.989
τ_0.6	0.992
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.985
τ_1.5	0.957
τ₂	0.903

Poisson coef.: 0.249
Rigidity: 308 Pa*10⁸
Young module: 769 Pa*10⁸
Knoop hardness: 514
Abrasion: 140

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	72