E-LAF7 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.749497 n_e = 1.754526	V_d = 35.28 V_e = 35.02	n_F - n_C = 0.021243 n_F' - n_C' = 0.021543	Coloring: 0.396 - 0.356 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.96631279 C2 = -0.0109274208 C3 = 0.0314277188 C4 = 0.000703288732 C5 = 0.0000443317688 C6 = 0.00000265190331

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.739839
n _C	1.743272
n _C'	1.744248
n _0.6328	1.745164
n _D	1.749311
n _d	1.749497
n _e	1.754526
n _F	1.764516
n _F'	1.765791
n _g	1.776987
n _h	1.787866
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'	0.3195
P_d,C	0.2929
P_e,C	0.5297
P_g,d	1.2940
P_g,F	0.5870
P_h,g	0.5121
P_i,g	-----
P_C',t	-----
P_e,C'	0.4838
P_F',e	0.5303
P_i,F'	-----

transmittance: 10 mm
τ_0.36	0.09
τ_0.37	0.4
τ_0.38	0.64
τ_0.39	0.78
τ_0.4	0.86
τ_0.42	0.933
τ_0.44	0.962
τ_0.46	0.976
τ_0.48	0.985
τ_0.5	0.994
τ_0.55	0.999
τ_0.6	0.999
τ_0.65	0.998
τ_0.7	0.999

Knoop hardness: 540
Abrasion: 149

Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	87