E-F8 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.595510 n_e = 1.599110	V_d = 39.21 V_e = 38.95	n_F - n_C = 0.015185 n_F' - n_C' = 0.015380	Coloring: 0.378 - 0.351 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.47286461 C2 = -0.00151192688 C3 = 0.0276004612 C4 = -0.00152550371 C5 = 0.000290711488 C6 = -0.0000128484326

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.588524
n _C	1.591018
n _C'	1.591724
n _0.6328	1.592387
n _D	1.595376
n _d	1.595510
n _e	1.599110
n _F	1.606203
n _F'	1.607104
n _g	1.614976
n _h	1.622535
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'	0.3247
P_d,C	0.2958
P_e,C	0.5329
P_g,d	1.2819
P_g,F	0.5777
P_h,g	0.4977
P_i,g	-----
P_C',t	-----
P_e,C'	0.4863
P_F',e	0.5264
P_i,F'	-----

transmittance: 10 mm
τ_0.35	0.01
τ_0.36	0.27
τ_0.37	0.64
τ_0.38	0.83
τ_0.39	0.918
τ_0.4	0.954
τ_0.42	0.979
τ_0.44	0.986
τ_0.46	0.989
τ_0.48	0.993
τ_0.5	0.995
τ_0.55	0.998
τ_0.6	0.999
τ_0.65	0.997
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	0.999
τ_1.6	0.999
τ_1.8	0.982
τ₂	0.968
τ_2.2	0.913
τ_2.4	0.9

Knoop hardness: 483
Abrasion: 112

Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	94