LAF7 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.749501 n_e = 1.754559	V_d = 35.18 V_e = 34.94	n_F - n_C = 0.021300 n_F' - n_C' = 0.021592	Coloring: 0.372 - 0.336 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.87163801 C2 = 0.0558631865 C3 = 0.0826011335 C4 = -0.0125713266 C5 = 0.00171414005 C6 = -0.0000797721681

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.739840
n _C	1.743229
n _C'	1.744207
n _0.6328	1.745130
n _D	1.749313
n _d	1.749501
n _e	1.754559
n _F	1.764530
n _F'	1.765800
n _g	1.776940
n _h	1.787690
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'	0.3060
P_d,C	0.2944
P_e,C	0.5318
P_g,d	1.2881
P_g,F	0.5825
P_h,g	0.5046
P_i,g	-----
P_C',t	-----
P_e,C'	0.4859
P_F',e	0.5277
P_i,F'	-----

transmittance: 10 mm
τ_0.34	0.09
τ_0.35	0.34
τ_0.36	0.59
τ_0.37	0.74
τ_0.38	0.84
τ_0.39	0.9
τ_0.4	0.935
τ_0.42	0.968
τ_0.44	0.98
τ_0.46	0.987
τ_0.48	0.991
τ_0.5	0.993
τ_0.55	0.996
τ_0.6	0.994
τ_0.65	0.996
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	0.993
τ_1.6	0.994
τ_1.8	0.978
τ₂	0.957
τ_2.2	0.86
τ_2.4	0.67

Knoop hardness: 471
Abrasion: 176

Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	63