LAF9 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.795040 n_e = 1.801617	V_d = 28.56 V_e = 28.35	n_F - n_C = 0.027832 n_F' - n_C' = 0.028274	Coloring: 0.395 - 0.363 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 3.09792113 C2 = -0.0111246632 C3 = 0.0388244968 C4 = 0.00194918388 C5 = -0.0000684019791 C6 = 0.000013303053

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.782591
n _C	1.786984
n _C'	1.788239
n _0.6328	1.789421
n _D	1.794798
n _d	1.795040
n _e	1.801617
n _F	1.814816
n _F'	1.816513
n _g	1.831518
n _h	1.846299
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'	0.3102
P_d,C	0.2894
P_e,C	0.5257
P_g,d	1.3106
P_g,F	0.6000
P_h,g	0.5310
P_i,g	-----
P_C',t	-----
P_e,C'	0.4806
P_F',e	0.5352
P_i,F'	-----

transmittance: 10 mm
τ_0.36	0.02
τ_0.37	0.22
τ_0.38	0.53
τ_0.39	0.74
τ_0.4	0.85
τ_0.42	0.946
τ_0.44	0.978
τ_0.46	0.99
τ_0.48	0.998
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	0.992
τ₂	0.985
τ_2.2	0.952
τ_2.4	0.899

Knoop hardness: 426
Abrasion: 212

Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	75