TAF3 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.804199 n_e = 1.808313	V_d = 46.50 V_e = 46.25	n_F - n_C = 0.017293 n_F' - n_C' = 0.017473	Coloring: 0.31 - 0.40 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 3.1743707 C2 = -0.014110466 C3 = 0.028862637 C4 = 0.00003355949 C5 = 0.000080422109 C6 = -0.0000028956744

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.785507
n _s	1.790010
n _r	1.796074
n _C	1.799002
n _C'	1.799825
n _0.6328	1.800596
n _D	1.804046
n _d	1.804199
n _e	1.808313
n _F	1.816296
n _F'	1.817299
n _g	1.825945
n _h	1.834084
n _i	1.848194
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7803
P_C,A'	0.3379
P_d,C	0.3004
P_e,C	0.5383
P_g,d	1.2574
P_g,F	0.5579
P_h,g	0.4706
P_i,g	1.2865
P_C',t	0.8279
P_e,C'	0.4907
P_F',e	0.5196
P_i,F'	1.7865

transmittance: 5 mm
τ_1.55	0.998
τ_1.5	0.998
τ_1.4	0.998
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	0.998
τ_0.48	0.998
τ_0.46	0.993
τ_0.44	0.99
τ_0.42	0.985
τ_0.4	0.976
τ_0.39	0.96
τ_0.38	0.94
τ_0.37	0.91
τ_0.36	0.84
τ_0.35	0.71
τ_0.34	0.64
τ_0.33	0.5
τ_0.32	0.35
τ_0.31	0.21
τ_0.3	0.09

transmittance: 10 mm
τ_1.55	0.997
τ_1.5	0.995
τ_1.4	0.99
τ_1.3	0.996
τ_1.2	0.998
τ_1.1	0.998
τ_1.06	0.999
τ_1.05	0.999
τ₁	0.998
τ_0.95	0.998
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	0.996
τ_0.48	0.996
τ_0.46	0.987
τ_0.44	0.979
τ_0.42	0.97
τ_0.4	0.953
τ_0.39	0.93
τ_0.38	0.89
τ_0.37	0.82
τ_0.36	0.71
τ_0.35	0.51
τ_0.34	0.41
τ_0.33	0.25
τ_0.32	0.12
τ_0.31	0.05
τ_0.3	0.01

Poisson coef.: 0.298
Rigidity: 481 Pa*10⁸
Young module: 1248 Pa*10⁸
Knoop hardness: 760
Optical stress coef.: 1.37 1/Pa*10¹²
Abrasion: 60

Staining: 2
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	63
100 ~ 300	75

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		1.4
-20 ~ 0		1.7
0 ~ 20		2.1
20 ~ 40		2.4
40 ~ 60		2.8
60 ~ 80		3.1

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		3.8
-20 ~ 0		3.8
0 ~ 20		3.9
20 ~ 40		4
40 ~ 60		4.1
60 ~ 80		4.3