E-F3 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.612929 n_e = 1.616857	V_d = 36.96 V_e = 36.69	n_F - n_C = 0.016583 n_F' - n_C' = 0.016808	Coloring: 0.36 - 0.39 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 2.5362697 C2 = -0.010610424 C3 = 0.021233821 C4 = 0.00099012105 C5 = -0.000059984348 C6 = 0.0000082354366

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.595901
n _s	1.599862
n _r	1.605345
n _C	1.608050
n _C'	1.608817
n _0.6328	1.609536
n _D	1.612784
n _d	1.612929
n _e	1.616857
n _F	1.624634
n _F'	1.625626
n _g	1.634336
n _h	1.642841
n _i	1.658545
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7326
P_C,A'	0.3233
P_d,C	0.2942
P_e,C	0.5310
P_g,d	1.2908
P_g,F	0.5850
P_h,g	0.5128
P_i,g	1.4598
P_C',t	0.7788
P_e,C'	0.4848
P_F',e	0.5287
P_i,F'	1.9851

transmittance: 5 mm
τ_1.55	0.997
τ_1.5	0.998
τ_1.4	0.995
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	0.998
τ_0.6	0.999
τ_0.55	0.998
τ_0.5	0.997
τ_0.48	0.996
τ_0.46	0.994
τ_0.44	0.993
τ_0.42	0.991
τ_0.4	0.979
τ_0.39	0.958
τ_0.38	0.9
τ_0.37	0.75
τ_0.36	0.42
τ_0.35	0.07

transmittance: 10 mm
τ_1.55	0.995
τ_1.5	0.995
τ_1.4	0.99
τ_1.3	0.999
τ_1.2	0.999
τ_1.1	0.999
τ_1.06	0.998
τ_1.05	0.998
τ₁	0.998
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	0.998
τ_0.75	0.998
τ_0.7	0.997
τ_0.65	0.996
τ_0.6	0.997
τ_0.55	0.997
τ_0.5	0.994
τ_0.48	0.991
τ_0.46	0.989
τ_0.44	0.987
τ_0.42	0.982
τ_0.4	0.958
τ_0.39	0.917
τ_0.38	0.81
τ_0.37	0.56
τ_0.36	0.17
τ_0.35	0.01

Poisson coef.: 0.233
Rigidity: 324 Pa*10⁸
Young module: 797 Pa*10⁸
Knoop hardness: 540
Abrasion: 150

Staining: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	77
100 ~ 300	94

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		0.4
-20 ~ 0		1
0 ~ 20		1.4
20 ~ 40		1.7
40 ~ 60		1.9
60 ~ 80		2.2

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		2.6
-20 ~ 0		2.8
0 ~ 20		3
20 ~ 40		3.1
40 ~ 60		3.2
60 ~ 80		3.3