LAC14 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.696802 n_e = 1.699797	V_d = 55.45 V_e = 55.24	n_F - n_C = 0.012564 n_F' - n_C' = 0.012666	Coloring: 0.26 - 0.35 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 2.8255229 C2 = -0.013632902 C3 = 0.019791402 C4 = 0.000015032564 C5 = 0.000040761368 C6 = -0.0000017527267

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.682499
n _s	1.686122
n _r	1.690776
n _C	1.692968
n _C'	1.693580
n _0.6328	1.694151
n _D	1.696690
n _d	1.696802
n _e	1.699797
n _F	1.705533
n _F'	1.706247
n _g	1.712350
n _h	1.718011
n _i	1.727648
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8332
P_C,A'	0.3507
P_d,C	0.3051
P_e,C	0.5435
P_g,d	1.2374
P_g,F	0.5425
P_h,g	0.4505
P_i,g	1.2176
P_C',t	0.8819
P_e,C'	0.4948
P_F',e	0.5133
P_i,F'	1.7033

transmittance: 5 mm
τ_1.55	0.997
τ_1.5	0.997
τ_1.4	0.997
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	0.998
τ_0.65	0.999
τ_0.6	0.999
τ_0.55	0.999
τ_0.5	0.999
τ_0.48	0.998
τ_0.46	0.998
τ_0.44	0.996
τ_0.42	0.995
τ_0.4	0.993
τ_0.39	0.992
τ_0.38	0.989
τ_0.37	0.983
τ_0.36	0.973
τ_0.35	0.956
τ_0.34	0.93
τ_0.33	0.897
τ_0.32	0.851
τ_0.31	0.794
τ_0.3	0.728
τ_0.29	0.656
τ_0.28	0.57

transmittance: 10 mm
τ_1.55	0.994
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	0.999
τ₁	0.999
τ_0.95	0.999
τ_0.9	0.999
τ_0.85	0.999
τ_0.83	0.998
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	0.998
τ_0.55	0.999
τ_0.5	0.998
τ_0.48	0.997
τ_0.46	0.996
τ_0.44	0.993
τ_0.42	0.991
τ_0.4	0.986
τ_0.39	0.985
τ_0.38	0.977
τ_0.37	0.965
τ_0.36	0.947
τ_0.35	0.913
τ_0.34	0.866
τ_0.33	0.805
τ_0.32	0.725
τ_0.31	0.63
τ_0.3	0.531
τ_0.29	0.43
τ_0.28	0.324

Poisson coef.: 0.293
Rigidity: 429 Pa*10⁸
Young module: 1108 Pa*10⁸
Knoop hardness: 690
Optical stress coef.: 1.81 1/Pa*10¹²
Abrasion: 80

Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	59
100 ~ 300	71

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		1.6
-20 ~ 0		1.8
0 ~ 20		2.1
20 ~ 40		2.4
40 ~ 60		2.7
60 ~ 80		3

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		3.8
-20 ~ 0		3.8
0 ~ 20		3.8
20 ~ 40		3.9
40 ~ 60		4
60 ~ 80		4.2