E-LAK18 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.729157 n_e = 1.732337	V_d = 54.65 V_e = 54.43	n_F - n_C = 0.013340 n_F' - n_C' = 0.013454	Coloring: 0.343 - 0.290 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.93385862 C2 = -0.0150347642 C3 = 0.0198579837 C4 = 0.000500310675 C5 = -0.0000205752531 C6 = 0.00000137499776

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.722788
n _C	1.725099
n _C'	1.725745
n _0.6328	1.726349
n _D	1.729038
n _d	1.729157
n _e	1.732337
n _F	1.738440
n _F'	1.739200
n _g	1.745699
n _h	1.751729
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'	0.3477
P_d,C	0.3041
P_e,C	0.5425
P_g,d	1.2400
P_g,F	0.5441
P_h,g	0.4520
P_i,g	-----
P_C',t	-----
P_e,C'	0.4941
P_F',e	0.5144
P_i,F'	-----

transmittance: 10 mm
τ_0.28	0.04
τ_0.29	0.16
τ_0.3	0.29
τ_0.31	0.34
τ_0.32	0.56
τ_0.33	0.69
τ_0.34	0.8
τ_0.35	0.88
τ_0.36	0.932
τ_0.37	0.964
τ_0.38	0.986
τ_0.39	0.996
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	0.999
τ_1.6	0.999
τ_1.8	0.998
τ₂	0.968
τ_2.2	0.88
τ_2.4	0.61

Knoop hardness: 738
Abrasion: 68

Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	69