BACD5 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.589128 n_e = 1.591422	V_d = 61.25 V_e = 61.01	n_F - n_C = 0.009618 n_F' - n_C' = 0.009693	Coloring: 0.29 - 0.35 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 2.4861499 C2 = -0.0095684845 C3 = 0.014685059 C4 = -0.00011216487 C5 = 0.000041978777 C6 = -0.000001885619

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.578139
n _s	1.580922
n _r	1.584502
n _C	1.586187
n _C'	1.586657
n _0.6328	1.587095
n _D	1.589042
n _d	1.589128
n _e	1.591422
n _F	1.595805
n _F'	1.596350
n _g	1.601002
n _h	1.605309
n _i	1.612619
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8367
P_C,A'	0.3522
P_d,C	0.3057
P_e,C	0.5442
P_g,d	1.2345
P_g,F	0.5403
P_h,g	0.4478
P_i,g	1.2077
P_C',t	0.8855
P_e,C'	0.4954
P_F',e	0.5123
P_i,F'	1.6914

transmittance: 5 mm
τ_1.55	0.997
τ_1.5	0.997
τ_1.4	0.99
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	0.999
τ_0.46	0.999
τ_0.44	0.999
τ_0.42	0.998
τ_0.4	0.997
τ_0.39	0.995
τ_0.38	0.992
τ_0.37	0.987
τ_0.36	0.976
τ_0.35	0.956
τ_0.34	0.92
τ_0.33	0.86
τ_0.32	0.75
τ_0.31	0.61
τ_0.3	0.42
τ_0.29	0.24
τ_0.28	0.12

transmittance: 10 mm
τ_1.55	0.994
τ_1.5	0.994
τ_1.4	0.98
τ_1.3	0.998
τ_1.2	0.998
τ_1.1	0.998
τ_1.06	0.998
τ_1.05	0.998
τ₁	0.998
τ_0.95	0.998
τ_0.9	0.998
τ_0.85	0.998
τ_0.83	0.998
τ_0.8	0.998
τ_0.78	0.998
τ_0.75	0.998
τ_0.7	0.998
τ_0.65	0.998
τ_0.6	0.998
τ_0.55	0.999
τ_0.5	0.999
τ_0.48	0.998
τ_0.46	0.997
τ_0.44	0.997
τ_0.42	0.996
τ_0.4	0.993
τ_0.39	0.991
τ_0.38	0.985
τ_0.37	0.974
τ_0.36	0.952
τ_0.35	0.914
τ_0.34	0.85
τ_0.33	0.74
τ_0.32	0.57
τ_0.31	0.37
τ_0.3	0.08
τ_0.29	0.06
τ_0.28	0.01

Poisson coef.: 0.254
Rigidity: 346 Pa*10⁸
Young module: 870 Pa*10⁸
Knoop hardness: 615
Abrasion: 100

Staining: 3
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	57
100 ~ 300	66

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		1.3
-20 ~ 0		1.6
0 ~ 20		1.9
20 ~ 40		2.2
40 ~ 60		2.5
60 ~ 80		2.8

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		3.5
-20 ~ 0		3.5
0 ~ 20		3.5
20 ~ 40		3.6
40 ~ 60		3.7
60 ~ 80		3.9