E-SK2 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.607380 n_e = 1.609932	V_d = 56.74 V_e = 56.45	n_F - n_C = 0.010703 n_F' - n_C' = 0.010803	Coloring: 0.343 - 0.300 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.5423297 C2 = -0.0100137205 C3 = 0.0136627069 C4 = 0.000828586571 C5 = -0.0000859026849 C6 = 0.00000507949629

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.602316
n _C	1.604144
n _C'	1.604657
n _0.6328	1.605137
n _D	1.607284
n _d	1.607380
n _e	1.609932
n _F	1.614847
n _F'	1.615460
n _g	1.620705
n _h	1.625586
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'	0.3411
P_d,C	0.3023
P_e,C	0.5407
P_g,d	1.2450
P_g,F	0.5473
P_h,g	0.4559
P_i,g	-----
P_C',t	-----
P_e,C'	0.4928
P_F',e	0.5165
P_i,F'	-----

transmittance: 10 mm
τ_0.29	0.01
τ_0.3	0.07
τ_0.31	0.22
τ_0.32	0.44
τ_0.33	0.63
τ_0.34	0.78
τ_0.35	0.87
τ_0.36	0.933
τ_0.37	0.967
τ_0.38	0.982
τ_0.39	0.992
τ_0.4	0.998
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	0.998
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	0.996
τ_1.6	0.999
τ_1.8	0.986
τ₂	0.976
τ_2.2	0.908
τ_2.4	0.79

Knoop hardness: 466
Abrasion: 110

Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	59