LAFL2 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.696999 n_e = 1.700419	V_d = 48.51 V_e = 48.22	n_F - n_C = 0.014366 n_F' - n_C' = 0.014523	Coloring: 0.33 - 0.38 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 2.8178044 C2 = -0.010126306 C3 = 0.020989819 C4 = 0.00060692316 C5 = -0.000021975044 C6 = 0.0000020172856

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.681773
n _s	1.685366
n _r	1.690293
n _C	1.692700
n _C'	1.693379
n _0.6328	1.694015
n _D	1.696872
n _d	1.696999
n _e	1.700419
n _F	1.707067
n _F'	1.707902
n _g	1.715093
n _h	1.721849
n _i	1.733578
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7604
P_C,A'	0.3331
P_d,C	0.2992
P_e,C	0.5372
P_g,d	1.2593
P_g,F	0.5586
P_h,g	0.4702
P_i,g	1.2866
P_C',t	0.8077
P_e,C'	0.4900
P_F',e	0.5208
P_i,F'	1.7871

transmittance: 5 mm
τ_1.55	0.997
τ_1.5	0.997
τ_1.4	0.997
τ_1.3	0.999
τ_1.2	0.999
τ_1.1	0.999
τ_1.06	0.999
τ_1.05	0.999
τ₁	0.999
τ_0.95	0.999
τ_0.9	0.999
τ_0.85	0.999
τ_0.83	0.999
τ_0.8	0.999
τ_0.78	0.999
τ_0.75	0.999
τ_0.7	0.999
τ_0.65	0.999
τ_0.6	0.999
τ_0.55	0.999
τ_0.5	0.999
τ_0.48	0.998
τ_0.46	0.997
τ_0.44	0.996
τ_0.42	0.994
τ_0.4	0.988
τ_0.39	0.979
τ_0.38	0.965
τ_0.37	0.93
τ_0.36	0.87
τ_0.35	0.74
τ_0.34	0.49
τ_0.33	0.17

transmittance: 10 mm
τ_1.55	0.995
τ_1.5	0.994
τ_1.4	0.995
τ_1.3	0.997
τ_1.2	0.998
τ_1.1	0.998
τ_1.06	0.997
τ_1.05	0.997
τ₁	0.997
τ_0.95	0.997
τ_0.9	0.998
τ_0.85	0.998
τ_0.83	0.998
τ_0.8	0.998
τ_0.78	0.998
τ_0.75	0.999
τ_0.7	0.998
τ_0.65	0.998
τ_0.6	0.998
τ_0.55	0.999
τ_0.5	0.998
τ_0.48	0.996
τ_0.46	0.994
τ_0.44	0.992
τ_0.42	0.989
τ_0.4	0.976
τ_0.39	0.959
τ_0.38	0.931
τ_0.37	0.87
τ_0.36	0.76
τ_0.35	0.54
τ_0.34	0.24
τ_0.33	0.03

Knoop hardness: 585
Abrasion: 160

Staining: 3
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	86