M-BACD12 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.583129 n_e = 1.585469	V_d = 59.46 V_e = 59.22	n_F - n_C = 0.009806 n_F' - n_C' = 0.009886	Coloring: 0.29 - 0.35 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 2.4687806 C2 = -0.010626393 C3 = 0.013251843 C4 = 0.0004048612 C5 = -0.000029747988 C6 = 0.0000018258838

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.571973
n _s	1.574805
n _r	1.578429
n _C	1.580137
n _C'	1.580614
n _0.6328	1.581060
n _D	1.583042
n _d	1.583129
n _e	1.585469
n _F	1.589944
n _F'	1.590501
n _g	1.595245
n _h	1.599635
n _i	1.607124
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8324
P_C,A'	0.3500
P_d,C	0.3050
P_e,C	0.5436
P_g,d	1.2354
P_g,F	0.5405
P_h,g	0.4475
P_i,g	1.2112
P_C',t	0.8811
P_e,C'	0.4950
P_F',e	0.5130
P_i,F'	1.6950

transmittance: 5 mm
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	0.998
τ_0.44	0.998
τ_0.42	0.998
τ_0.4	0.996
τ_0.39	0.994
τ_0.38	0.99
τ_0.37	0.984
τ_0.36	0.973
τ_0.35	0.953
τ_0.34	0.92
τ_0.33	0.86
τ_0.32	0.76
τ_0.31	0.62
τ_0.3	0.44
τ_0.29	0.27
τ_0.28	0.13

transmittance: 10 mm
τ_0.7	0.998
τ_0.65	0.998
τ_0.6	0.998
τ_0.55	0.998
τ_0.5	0.998
τ_0.48	0.998
τ_0.46	0.997
τ_0.44	0.996
τ_0.42	0.995
τ_0.4	0.992
τ_0.39	0.987
τ_0.38	0.98
τ_0.37	0.969
τ_0.36	0.947
τ_0.35	0.909
τ_0.34	0.84
τ_0.33	0.73
τ_0.32	0.58
τ_0.31	0.39
τ_0.3	0.2
τ_0.29	0.07
τ_0.28	0.02

Poisson coef.: 0.252
Rigidity: 358 Pa*10⁸
Young module: 896 Pa*10⁸
Knoop hardness: 575
Optical stress coef.: 2.24 1/Pa*10¹²
Abrasion: 110

Staining: 3
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	70
100 ~ 300	88

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		1.4
-20 ~ 0		1.8
0 ~ 20		2.1
20 ~ 40		2.4
40 ~ 60		2.6
60 ~ 80		2.7

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		3.5
-20 ~ 0		3.6
0 ~ 20		3.7
20 ~ 40		3.8
40 ~ 60		3.8
60 ~ 80		3.8