SK1 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.610248 n_e = 1.612822	V_d = 56.50 V_e = 56.22	n_F - n_C = 0.010800 n_F' - n_C' = 0.010900	Coloring: 0.31 - 0.35 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5497575 C2 = -0.0097374305 C3 = 0.014968468 C4 = 0.00042940752 C5 = -0.000023353517 C6 = 0.0000015572796

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.598339
n _s	1.601268
n _r	1.605130
n _C	1.606980
n _C'	1.607499
n _0.6328	1.607984
n _D	1.610152
n _d	1.610248
n _e	1.612822
n _F	1.617780
n _F'	1.618399
n _g	1.623699
n _h	1.628630
n _i	1.637089
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8000
P_C,A'	0.3425
P_d,C	0.3025
P_e,C	0.5409
P_g,d	1.2454
P_g,F	0.5480
P_h,g	0.4566
P_i,g	1.2398
P_C',t	0.8480
P_e,C'	0.4928
P_F',e	0.5163
P_i,F'	1.7306

transmittance: 10 mm
τ_0.31	0.145
τ_0.32	0.447
τ_0.33	0.701
τ_0.34	0.846
τ_0.35	0.929
τ_0.36	0.961
τ_0.37	0.979
τ_0.38	0.985
τ_0.39	0.992
τ_0.4	0.995
τ_0.42	0.997
τ_0.44	0.997
τ_0.46	0.997
τ_0.48	0.997
τ_0.5	0.998
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.995
τ_1.5	0.985
τ₂	0.967

transmittance: 25 mm
τ_0.32	0.134
τ_0.33	0.411
τ_0.34	0.659
τ_0.35	0.832
τ_0.36	0.906
τ_0.37	0.949
τ_0.38	0.964
τ_0.39	0.982
τ_0.4	0.989
τ_0.42	0.992
τ_0.44	0.992
τ_0.46	0.992
τ_0.48	0.992
τ_0.5	0.996
τ_0.55	0.996
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.989
τ_1.5	0.964
τ₂	0.92

Poisson coef.: 0.246
Rigidity: 317 Pa*10⁸
Young module: 789 Pa*10⁸
Knoop hardness: 476
Abrasion: 130

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	70