E-SK18 - Hikari

Diagram n (λ)

n calculation

Analogue search

Main parameters
n_d = 1.638540 n_e = 1.641281	V_d = 55.47 V_e = 55.20	n_F - n_C = 0.011509 n_F' - n_C' = 0.011617	Coloring: 0.364 - 0.332 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.65253732 C2 = -0.0207076891 C3 = 0.00823565189 C4 = 0.00259890034 C5 = -0.00030272324 C6 = 0.00001591967

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.633080
n _C	1.635061
n _C'	1.635614
n _0.6328	1.636130
n _D	1.638437
n _d	1.638540
n _e	1.641281
n _F	1.646570
n _F'	1.647231
n _g	1.652890
n _h	1.658180
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'	0.3466
P_d,C	0.3022
P_e,C	0.5404
P_g,d	1.2468
P_g,F	0.5491
P_h,g	0.4596
P_i,g	-----
P_C',t	-----
P_e,C'	0.4923
P_F',e	0.5169
P_i,F'	-----

Knoop hardness: 488
Abrasion: 165

Resistance to acids: 5

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	81