BAM 9 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.643279 n_e = 1.646475	V_d = 47.85 V_e = 47.54	n_F - n_C = 0.013443 n_F' - n_C' = 0.013596	Coloring: 0.33 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6446959 C2 = -0.0094397093 C3 = 0.018905035 C4 = 0.00050396096 C5 = -0.0000069325864 C6 = 0.0000015474561

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.629063
n _s	1.632428
n _r	1.637024
n _C	1.639268
n _C'	1.639901
n _0.6328	1.640494
n _D	1.643160
n _d	1.643279
n _e	1.646475
n _F	1.652711
n _F'	1.653497
n _g	1.660292
n _h	1.666724
n _i	1.678004
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7590
P_C,A'	0.3319
P_d,C	0.2983
P_e,C	0.5361
P_g,d	1.2655
P_g,F	0.5639
P_h,g	0.4784
P_i,g	1.3174
P_C',t	0.8061
P_e,C'	0.4890
P_F',e	0.5223
P_i,F'	1.8229

transmittance: 10 mm
τ_0.38	0.918
τ_0.39	0.948
τ_0.4	0.967
τ_0.42	0.983
τ_0.44	0.988
τ_0.46	0.991
τ_0.48	0.994
τ_0.5	0.996
τ_0.55	0.997
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.997
τ_0.9	0.997

Poisson coef.: 0.267
Rigidity: 300 Pa*10⁸
Young module: 761 Pa*10⁸
Knoop hardness: 490
Abrasion: 174

Climatic resistance: 3
Resistance to acids: 52.2
Phosphate resistance: 3.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	69
100 ~ 300	80

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.4
-20 ~ 0	t	2.4
0 ~ 20	t	2.5
20 ~ 40	t	2.6
40 ~ 60	t	2.7
60 ~ 80	t	2.9
-40 ~ -20	C'	3
-20 ~ 0	C'	3.1
0 ~ 20	C'	3.2
20 ~ 40	C'	3.3
40 ~ 60	C'	3.5
60 ~ 80	C'	3.7
-40 ~ -20		3.1
-20 ~ 0		3.2
0 ~ 20		3.3
20 ~ 40		3.4
40 ~ 60		3.5
60 ~ 80		3.7
-40 ~ -20	D	3.4
-20 ~ 0	D	3.4
0 ~ 20	D	3.5
20 ~ 40	D	3.6
40 ~ 60	D	3.7
60 ~ 80	D	3.9
-40 ~ -20	e	3.4
-20 ~ 0	e	3.5
0 ~ 20	e	3.6
20 ~ 40	e	3.8
40 ~ 60	e	4
60 ~ 80	e	4.2
-40 ~ -20	F	4
-20 ~ 0	F	4.1
0 ~ 20	F	4.2
20 ~ 40	F	4.4
40 ~ 60	F	4.6
60 ~ 80	F	4.9
-40 ~ -20	g	4.5
-20 ~ 0	g	4.6
0 ~ 20	g	4.8
20 ~ 40	g	5
40 ~ 60	g	5.2
60 ~ 80	g	5.5