K-SK15 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.622988 n_e = 1.625543	V_d = 58.15 V_e = 57.88	n_F - n_C = 0.010713 n_F' - n_C' = 0.010807	Coloring: 0.30 - 0.35 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5911207 C2 = -0.010159791 C3 = 0.014870186 C4 = 0.00050389129 C5 = -0.000041552509 C6 = 0.000002645135

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.611079
n _s	1.614026
n _r	1.617890
n _C	1.619735
n _C'	1.620252
n _0.6328	1.620736
n _D	1.622892
n _d	1.622988
n _e	1.625543
n _F	1.630449
n _F'	1.631060
n _g	1.636279
n _h	1.641120
n _i	1.649419
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8079
P_C,A'	0.3448
P_d,C	0.3035
P_e,C	0.5421
P_g,d	1.2405
P_g,F	0.5441
P_h,g	0.4519
P_i,g	1.2265
P_C',t	0.8562
P_e,C'	0.4938
P_F',e	0.5149
P_i,F'	1.7137

transmittance: 10 mm
τ_0.29	0.022
τ_0.3	0.138
τ_0.31	0.35
τ_0.32	0.559
τ_0.33	0.733
τ_0.34	0.839
τ_0.35	0.905
τ_0.36	0.946
τ_0.37	0.967
τ_0.38	0.978
τ_0.39	0.985
τ_0.4	0.988
τ_0.42	0.991
τ_0.44	0.992
τ_0.46	0.995
τ_0.48	0.995
τ_0.5	0.997
τ_0.55	0.997
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.995
τ₂	0.971

transmittance: 25 mm
τ_0.31	0.072
τ_0.32	0.234
τ_0.33	0.46
τ_0.34	0.646
τ_0.35	0.78
τ_0.36	0.87
τ_0.37	0.92
τ_0.38	0.947
τ_0.39	0.964
τ_0.4	0.971
τ_0.42	0.978
τ_0.44	0.982
τ_0.46	0.989
τ_0.48	0.989
τ_0.5	0.992
τ_0.55	0.992
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.989
τ₂	0.93

Poisson coef.: 0.254
Rigidity: 327 Pa*10⁸
Young module: 819 Pa*10⁸
Knoop hardness: 473
Abrasion: 160

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	80