TAF5 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.815999 n_e = 1.820170	V_d = 46.57 V_e = 46.32	n_F - n_C = 0.017521 n_F' - n_C' = 0.017705	Coloring: 0.30 - 0.39 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 3.2191571 C2 = -0.015310562 C3 = 0.02636257 C4 = 0.0010534452 C5 = -0.000061660412 C6 = 0.0000039733897

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.797219
n _s	1.801721
n _r	1.807795
n _C	1.810744
n _C'	1.811575
n _0.6328	1.812353
n _D	1.815844
n _d	1.815999
n _e	1.820170
n _F	1.828265
n _F'	1.829281
n _g	1.838011
n _h	1.846190
n _i	1.860339
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7718
P_C,A'	0.3353
P_d,C	0.2999
P_e,C	0.5380
P_g,d	1.2563
P_g,F	0.5562
P_h,g	0.4667
P_i,g	1.2743
P_C',t	0.8193
P_e,C'	0.4905
P_F',e	0.5199
P_i,F'	1.7726

transmittance: 5 mm
τ_0.7	0.999
τ_0.65	0.998
τ_0.6	0.996
τ_0.55	0.998
τ_0.5	0.999
τ_0.48	0.998
τ_0.46	0.998
τ_0.44	0.996
τ_0.42	0.993
τ_0.4	0.982
τ_0.39	0.973
τ_0.38	0.96
τ_0.37	0.93
τ_0.36	0.88
τ_0.35	0.81
τ_0.34	0.71
τ_0.33	0.58
τ_0.32	0.43
τ_0.31	0.24
τ_0.3	0.14

transmittance: 10 mm
τ_0.7	0.997
τ_0.65	0.996
τ_0.6	0.993
τ_0.55	0.996
τ_0.5	0.997
τ_0.48	0.996
τ_0.46	0.996
τ_0.44	0.991
τ_0.42	0.985
τ_0.4	0.964
τ_0.39	0.946
τ_0.38	0.92
τ_0.37	0.86
τ_0.36	0.77
τ_0.35	0.66
τ_0.34	0.51
τ_0.33	0.34
τ_0.32	0.19
τ_0.31	0.06
τ_0.3	0.02

Poisson coef.: 0.3
Rigidity: 475 Pa*10⁸
Young module: 1234 Pa*10⁸
Knoop hardness: 755
Abrasion: 60

Staining: 2
Resistance to acids: 3

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

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		1.8
-20 ~ 0		2.2
0 ~ 20		2.5
20 ~ 40		2.9
40 ~ 60		3.2
60 ~ 80		3.5

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		4.3
-20 ~ 0		4.3
0 ~ 20		4.3
20 ~ 40		4.5
40 ~ 60		4.6
60 ~ 80		4.8