TAC2 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.740996 n_e = 1.744356	V_d = 52.60 V_e = 52.37	n_F - n_C = 0.014086 n_F' - n_C' = 0.014211	Coloring: 0.29 - 0.37 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 2.9717137 C2 = -0.014952593 C3 = 0.020162868 C4 = 0.00094072283 C5 = -0.000088614104 C6 = 0.0000053191242

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.725330
n _s	1.729218
n _r	1.734298
n _C	1.736722
n _C'	1.737401
n _0.6328	1.738036
n _D	1.740871
n _d	1.740996
n _e	1.744356
n _F	1.750809
n _F'	1.751613
n _g	1.758479
n _h	1.764851
n _i	1.775798
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8087
P_C,A'	0.3445
P_d,C	0.3034
P_e,C	0.5419
P_g,d	1.2410
P_g,F	0.5444
P_h,g	0.4523
P_i,g	1.2294
P_C',t	0.8569
P_e,C'	0.4937
P_F',e	0.5151
P_i,F'	1.7168

transmittance: 5 mm
τ_1.55	0.996
τ_1.5	0.996
τ_1.4	0.996
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	0.997
τ_0.46	0.993
τ_0.44	0.992
τ_0.42	0.988
τ_0.4	0.982
τ_0.39	0.972
τ_0.38	0.959
τ_0.37	0.94
τ_0.36	0.9
τ_0.35	0.84
τ_0.34	0.75
τ_0.33	0.64
τ_0.32	0.52
τ_0.31	0.38
τ_0.3	0.28
τ_0.29	0.18
τ_0.28	0.07

transmittance: 10 mm
τ_1.55	0.992
τ_1.5	0.993
τ_1.4	0.993
τ_1.3	0.999
τ_1.2	0.999
τ_1.1	0.999
τ_1.06	0.999
τ_1.05	0.998
τ₁	0.999
τ_0.95	0.999
τ_0.9	0.999
τ_0.85	0.998
τ_0.83	0.998
τ_0.8	0.998
τ_0.78	0.998
τ_0.75	0.997
τ_0.7	0.996
τ_0.65	0.996
τ_0.6	0.996
τ_0.55	0.996
τ_0.5	0.996
τ_0.48	0.994
τ_0.46	0.987
τ_0.44	0.984
τ_0.42	0.977
τ_0.4	0.965
τ_0.39	0.944
τ_0.38	0.92
τ_0.37	0.87
τ_0.36	0.8
τ_0.35	0.7
τ_0.34	0.57
τ_0.33	0.41
τ_0.32	0.27
τ_0.31	0.04
τ_0.3	0.08
τ_0.29	0.03
τ_0.28	0.01

Poisson coef.: 0.299
Rigidity: 451 Pa*10⁸
Young module: 1171 Pa*10⁸
Knoop hardness: 715
Optical stress coef.: 1.56 1/Pa*10¹²
Abrasion: 70

Staining: 2
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	52
100 ~ 300	70

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		4.3
-20 ~ 0		4.7
0 ~ 20		5.1
20 ~ 40		5.4
40 ~ 60		5.7
60 ~ 80		6.1

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		6.6
-20 ~ 0		6.7
0 ~ 20		6.8
20 ~ 40		6.9
40 ~ 60		7
60 ~ 80		7.2