K-SK18RH - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.638540 n_e = 1.641280	V_d = 55.49 V_e = 55.21	n_F - n_C = 0.011506 n_F' - n_C' = 0.011614	Coloring: 0.30 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.635362 C2 = -0.0091813172 C3 = 0.018172495 C4 = -0.00018639212 C5 = 0.000074877018 C6 = -0.0000038761228

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.625880
n _s	1.628972
n _r	1.633087
n _C	1.635059
n _C'	1.635612
n _0.6328	1.636129
n _D	1.638438
n _d	1.638540
n _e	1.641280
n _F	1.646566
n _F'	1.647227
n _g	1.652897
n _h	1.658176
n _i	1.667150
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7977
P_C,A'	0.3428
P_d,C	0.3024
P_e,C	0.5406
P_g,d	1.2476
P_g,F	0.5501
P_h,g	0.4588
P_i,g	1.2386
P_C',t	0.8458
P_e,C'	0.4925
P_F',e	0.5168
P_i,F'	1.7314

transmittance: 10 mm
τ_0.3	0.076
τ_0.31	0.255
τ_0.32	0.447
τ_0.33	0.637
τ_0.34	0.786
τ_0.35	0.873
τ_0.36	0.932
τ_0.37	0.96
τ_0.38	0.971
τ_0.39	0.981
τ_0.4	0.985
τ_0.42	0.988
τ_0.44	0.988
τ_0.46	0.99
τ_0.48	0.992
τ_0.5	0.995
τ_0.55	0.995
τ_0.6	0.995
τ_0.65	0.997
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.995
τ_1.5	0.995
τ₂	0.974

transmittance: 25 mm
τ_0.31	0.033
τ_0.32	0.134
τ_0.33	0.324
τ_0.34	0.547
τ_0.35	0.714
τ_0.36	0.838
τ_0.37	0.903
τ_0.38	0.93
τ_0.39	0.954
τ_0.4	0.964
τ_0.42	0.971
τ_0.44	0.971
τ_0.46	0.975
τ_0.48	0.982
τ_0.5	0.989
τ_0.55	0.989
τ_0.6	0.989
τ_0.65	0.992
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.989
τ_1.5	0.989
τ₂	0.937

Poisson coef.: 0.281
Rigidity: 357 Pa*10⁸
Young module: 915 Pa*10⁸
Knoop hardness: 580
Abrasion: 130

Climatic resistance: 1
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	84