TAFD30 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.882999 n_e = 1.888144	V_d = 40.80 V_e = 40.56	n_F - n_C = 0.021639 n_F' - n_C' = 0.021896	Coloring: 0.32 - 0.38 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 3.4419038 C2 = -0.014175245 C3 = 0.03435104 C4 = 0.0011752271 C5 = -0.000039010343 C6 = 0.0000037417054

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.860596
n _s	1.865760
n _r	1.872994
n _C	1.876569
n _C'	1.877581
n _0.6328	1.878531
n _D	1.882809
n _d	1.882999
n _e	1.888144
n _F	1.898208
n _F'	1.899477
n _g	1.910446
n _h	1.920810
n _i	1.938922
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7381
P_C,A'	0.3274
P_d,C	0.2971
P_e,C	0.5349
P_g,d	1.2683
P_g,F	0.5655
P_h,g	0.4789
P_i,g	1.3159
P_C',t	0.7849
P_e,C'	0.4881
P_F',e	0.5237
P_i,F'	1.8228

transmittance: 5 mm
τ_1.55	0.998
τ_1.5	0.998
τ_1.4	0.999
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	0.996
τ_0.46	0.992
τ_0.44	0.988
τ_0.42	0.978
τ_0.4	0.958
τ_0.39	0.94
τ_0.38	0.92
τ_0.37	0.86
τ_0.36	0.79
τ_0.35	0.7
τ_0.34	0.57
τ_0.33	0.42
τ_0.32	0.27
τ_0.31	0.13
τ_0.3	0.05

transmittance: 10 mm
τ_1.55	0.996
τ_1.5	0.996
τ_1.4	0.999
τ_1.3	0.999
τ_1.2	0.999
τ_1.1	0.998
τ_1.06	0.998
τ_1.05	0.998
τ₁	0.997
τ_0.95	0.997
τ_0.9	0.998
τ_0.85	0.997
τ_0.83	0.998
τ_0.8	0.997
τ_0.78	0.997
τ_0.75	0.997
τ_0.7	0.998
τ_0.65	0.998
τ_0.6	0.998
τ_0.55	0.998
τ_0.5	0.995
τ_0.48	0.992
τ_0.46	0.985
τ_0.44	0.976
τ_0.42	0.957
τ_0.4	0.917
τ_0.39	0.89
τ_0.38	0.84
τ_0.37	0.74
τ_0.36	0.63
τ_0.35	0.48
τ_0.34	0.33
τ_0.33	0.18
τ_0.32	0.07
τ_0.31	0.02

Poisson coef.: 0.301
Rigidity: 484 Pa*10⁸
Young module: 1260 Pa*10⁸
Knoop hardness: 730
Optical stress coef.: 1.2 1/Pa*10¹²
Abrasion: 60

Staining: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	68
100 ~ 300	81

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		2.5
-20 ~ 0		2.9
0 ~ 20		3.3
20 ~ 40		3.6
40 ~ 60		4
60 ~ 80		4.4

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		5
-20 ~ 0		5
0 ~ 20		5.1
20 ~ 40		5.3
40 ~ 60		5.5
60 ~ 80		5.7