E-BALF4 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.579570 n_e = 1.582139	V_d = 53.71 V_e = 53.42	n_F - n_C = 0.010790 n_F' - n_C' = 0.010897	Coloring: 0.356 - 0.326 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.45999845 C2 = -0.0140695372 C3 = 0.0104962988 C4 = 0.00154266669 C5 = -0.000169174126 C6 = 0.00000943510859

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.574479
n _C	1.576319
n _C'	1.576834
n _0.6328	1.577317
n _D	1.579474
n _d	1.579570
n _e	1.582139
n _F	1.587109
n _F'	1.587732
n _g	1.593079
n _h	1.598099
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'	0.3418
P_d,C	0.3012
P_e,C	0.5393
P_g,d	1.2519
P_g,F	0.5532
P_h,g	0.4652
P_i,g	-----
P_C',t	-----
P_e,C'	0.4915
P_F',e	0.5183
P_i,F'	-----

transmittance: 10 mm
τ_0.33	0.11
τ_0.34	0.41
τ_0.35	0.68
τ_0.36	0.85
τ_0.37	0.926
τ_0.38	0.968
τ_0.39	0.986
τ_0.4	0.996
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	0.995
τ₂	0.979
τ_2.2	0.931
τ_2.4	0.87

Knoop hardness: 511
Abrasion: 131

Resistance to acids: 4

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