E-F1 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.625879 n_e = 1.630025	V_d = 35.74 V_e = 35.48	n_F - n_C = 0.017511 n_F' - n_C' = 0.017756	Coloring: 0.36 - 0.39 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 2.5730565 C2 = -0.010203605 C3 = 0.023095784 C4 = 0.00087114252 C5 = -0.000030730079 C6 = 0.0000069457986

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.608051
n _s	1.612157
n _r	1.617897
n _C	1.620740
n _C'	1.621546
n _0.6328	1.622304
n _D	1.625726
n _d	1.625879
n _e	1.630025
n _F	1.638252
n _F'	1.639303
n _g	1.648545
n _h	1.657583
n _i	1.674265
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7245
P_C,A'	0.3214
P_d,C	0.2934
P_e,C	0.5301
P_g,d	1.2942
P_g,F	0.5877
P_h,g	0.5161
P_i,g	1.4687
P_C',t	0.7706
P_e,C'	0.4841
P_F',e	0.5298
P_i,F'	1.9964

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	0.998
τ_0.75	0.998
τ_0.7	0.997
τ_0.65	0.997
τ_0.6	0.997
τ_0.55	0.997
τ_0.5	0.995
τ_0.48	0.994
τ_0.46	0.993
τ_0.44	0.991
τ_0.42	0.988
τ_0.4	0.973
τ_0.39	0.948
τ_0.38	0.88
τ_0.37	0.71
τ_0.36	0.38
τ_0.35	0.06

transmittance: 10 mm
τ_1.55	0.992
τ_1.5	0.993
τ_1.4	0.992
τ_1.3	0.997
τ_1.2	0.997
τ_1.1	0.997
τ_1.06	0.997
τ_1.05	0.997
τ₁	0.997
τ_0.95	0.997
τ_0.9	0.997
τ_0.85	0.998
τ_0.83	0.998
τ_0.8	0.997
τ_0.78	0.997
τ_0.75	0.996
τ_0.7	0.995
τ_0.65	0.994
τ_0.6	0.995
τ_0.55	0.994
τ_0.5	0.991
τ_0.48	0.988
τ_0.46	0.985
τ_0.44	0.983
τ_0.42	0.976
τ_0.4	0.947
τ_0.39	0.898
τ_0.38	0.78
τ_0.37	0.51
τ_0.36	0.14

Poisson coef.: 0.242
Rigidity: 315 Pa*10⁸
Young module: 782 Pa*10⁸
Knoop hardness: 550
Abrasion: 140

Staining: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	86
100 ~ 300	105

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		-0.9
-20 ~ 0		-0.4
0 ~ 20		-0.1
20 ~ 40		0.3
40 ~ 60		0.6
60 ~ 80		0.8

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		1.3
-20 ~ 0		1.4
0 ~ 20		1.6
20 ~ 40		1.7
40 ~ 60		1.8
60 ~ 80		1.9