SSK5 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.658440 n_e = 1.661519	V_d = 50.86 V_e = 50.57	n_F - n_C = 0.012944 n_F' - n_C' = 0.013080	Coloring: 0.32 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6934535 C2 = -0.008484965 C3 = 0.02049593 C4 = -0.00012599938 C5 = 0.00007438375 C6 = -0.0000031333041

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.644570
n _s	1.647866
n _r	1.652368
n _C	1.654553
n _C'	1.655168
n _0.6328	1.655744
n _D	1.658325
n _d	1.658440
n _e	1.661519
n _F	1.667498
n _F'	1.668249
n _g	1.674722
n _h	1.680808
n _i	1.691320
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7712
P_C,A'	0.3365
P_d,C	0.3002
P_e,C	0.5381
P_g,d	1.2578
P_g,F	0.5580
P_h,g	0.4701
P_i,g	1.2821
P_C',t	0.8187
P_e,C'	0.4906
P_F',e	0.5198
P_i,F'	1.7822

transmittance: 10 mm
τ_0.32	0.03
τ_0.33	0.223
τ_0.34	0.582
τ_0.35	0.799
τ_0.36	0.898
τ_0.37	0.947
τ_0.38	0.965
τ_0.39	0.975
τ_0.4	0.98
τ_0.42	0.982
τ_0.44	0.985
τ_0.46	0.985
τ_0.48	0.988
τ_0.5	0.99
τ_0.55	0.992
τ_0.6	0.994
τ_0.65	0.994
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.997
τ_1.5	0.994
τ₂	0.971

transmittance: 25 mm
τ_0.33	0.023
τ_0.34	0.258
τ_0.35	0.571
τ_0.36	0.765
τ_0.37	0.874
τ_0.38	0.916
τ_0.39	0.94
τ_0.4	0.95
τ_0.42	0.957
τ_0.44	0.964
τ_0.46	0.964
τ_0.48	0.971
τ_0.5	0.975
τ_0.55	0.982
τ_0.6	0.985
τ_0.65	0.985
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.992
τ_1.5	0.985
τ₂	0.93

Poisson coef.: 0.28
Rigidity: 319 Pa*10⁸
Young module: 817 Pa*10⁸
Knoop hardness: 521
Abrasion: 180

Climatic resistance: 2
Resistance to acids: 4

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