BACD14 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

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Main parameters
n_d = 1.603110 n_e = 1.605481	V_d = 60.69 V_e = 60.42	n_F - n_C = 0.009936 n_F' - n_C' = 0.010019	Coloring: 0.30 - 0.35 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 2.5335256 C2 = -0.011903338 C3 = 0.012257249 C4 = 0.00079172149 C5 = -0.000077381829 C6 = 0.0000039935441

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.591819
n _s	1.594703
n _r	1.598361
n _C	1.600085
n _C'	1.600567
n _0.6328	1.601017
n _D	1.603022
n _d	1.603110
n _e	1.605481
n _F	1.610022
n _F'	1.610586
n _g	1.615398
n _h	1.619842
n _i	1.627418
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8318
P_C,A'	0.3485
P_d,C	0.3044
P_e,C	0.5430
P_g,d	1.2365
P_g,F	0.5410
P_h,g	0.4472
P_i,g	1.2096
P_C',t	0.8803
P_e,C'	0.4945
P_F',e	0.5137
P_i,F'	1.6938

transmittance: 5 mm
τ_1.55	0.996
τ_1.5	0.996
τ_1.4	0.991
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	0.999
τ_0.48	0.998
τ_0.46	0.997
τ_0.44	0.996
τ_0.42	0.996
τ_0.4	0.994
τ_0.39	0.992
τ_0.38	0.987
τ_0.37	0.976
τ_0.36	0.957
τ_0.35	0.92
τ_0.34	0.86
τ_0.33	0.75
τ_0.32	0.6
τ_0.31	0.41
τ_0.3	0.22
τ_0.29	0.08

transmittance: 10 mm
τ_1.55	0.993
τ_1.5	0.992
τ_1.4	0.983
τ_1.3	0.998
τ_1.2	0.998
τ_1.1	0.998
τ_1.06	0.998
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	0.999
τ_0.48	0.996
τ_0.46	0.994
τ_0.44	0.993
τ_0.42	0.992
τ_0.4	0.989
τ_0.39	0.985
τ_0.38	0.973
τ_0.37	0.952
τ_0.36	0.915
τ_0.35	0.85
τ_0.34	0.74
τ_0.33	0.56
τ_0.32	0.35
τ_0.31	0.17
τ_0.3	0.05
τ_0.29	0.01

Poisson coef.: 0.264
Rigidity: 330 Pa*10⁸
Young module: 836 Pa*10⁸
Knoop hardness: 585
Optical stress coef.: 2.04 1/Pa*10¹²
Abrasion: 130

Staining: 5
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	60
100 ~ 300	72

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		-0.3
0 ~ 20		0.4
20 ~ 40		0.6
40 ~ 60		0.9
60 ~ 80		1.1

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		1.9
-20 ~ 0		1.8
0 ~ 20		2
20 ~ 40		2
40 ~ 60		2.1
60 ~ 80		2.2