E-SK15 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.622990 n_e = 1.625540	V_d = 58.22 V_e = 57.95	n_F - n_C = 0.010699 n_F' - n_C' = 0.010793	Coloring: 0.344 - 0.305 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.59512882 C2 = -0.0133017463 C3 = 0.0129505299 C4 = 0.000946976976 C5 = -0.0000928161846 C6 = 0.00000507474225

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.617890
n _C	1.619740
n _C'	1.620257
n _0.6328	1.620740
n _D	1.622894
n _d	1.622990
n _e	1.625540
n _F	1.630440
n _F'	1.631050
n _g	1.636270
n _h	1.641120
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	-----
P_C,A'	0.3473
P_d,C	0.3036
P_e,C	0.5420
P_g,d	1.2412
P_g,F	0.5449
P_h,g	0.4532
P_i,g	-----
P_C',t	-----
P_e,C'	0.4937
P_F',e	0.5149
P_i,F'	-----

transmittance: 10 mm
τ_0.3	0.02
τ_0.31	0.13
τ_0.32	0.37
τ_0.33	0.6
τ_0.34	0.77
τ_0.35	0.88
τ_0.36	0.939
τ_0.37	0.976
τ_0.38	0.993
τ_0.39	0.999
τ_0.4	0.999
τ_0.42	0.999
τ_0.44	0.999
τ_0.46	0.999
τ_0.48	0.999
τ_0.5	0.999
τ_0.55	0.999
τ_0.6	0.999
τ_0.65	0.999
τ_0.7	0.999
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.999
τ_1.2	0.999
τ_1.4	0.997
τ_1.6	0.999
τ_1.8	0.997
τ₂	0.984
τ_2.2	0.942
τ_2.4	0.85

Knoop hardness: 471
Abrasion: 156

Resistance to acids: 4

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