E-LAK8 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.712995 n_e = 1.716149	V_d = 53.87 V_e = 53.64	n_F - n_C = 0.013234 n_F' - n_C' = 0.013350	Coloring: 0.355 - 0.295 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.87864541 C2 = -0.0142314931 C3 = 0.0198025768 C4 = 0.00040117957 C5 = -0.00000668878586 C6 = 0.000000786869747

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.706687
n _C	1.708975
n _C'	1.709614
n _0.6328	1.710212
n _D	1.712877
n _d	1.712995
n _e	1.716149
n _F	1.722209
n _F'	1.722965
n _g	1.729433
n _h	1.735448
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'	0.3468
P_d,C	0.3037
P_e,C	0.5420
P_g,d	1.2421
P_g,F	0.5458
P_h,g	0.4545
P_i,g	-----
P_C',t	-----
P_e,C'	0.4937
P_F',e	0.5150
P_i,F'	-----

transmittance: 10 mm
τ_0.3	0.03
τ_0.31	0.16
τ_0.32	0.35
τ_0.33	0.52
τ_0.34	0.68
τ_0.35	0.79
τ_0.36	0.87
τ_0.37	0.918
τ_0.38	0.949
τ_0.39	0.965
τ_0.4	0.976
τ_0.42	0.985
τ_0.44	0.99
τ_0.46	0.994
τ_0.48	0.997
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	0.997
τ_1.8	0.984
τ₂	0.956
τ_2.2	0.87
τ_2.4	0.6

Knoop hardness: 647
Abrasion: 72

Resistance to acids: 5

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	68