BAM12 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.639300 n_e = 1.642684	V_d = 44.87 V_e = 44.57	n_F - n_C = 0.014245 n_F' - n_C' = 0.014416	Coloring: 0.33 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6285823 C2 = -0.0090858727 C3 = 0.019551902 C4 = 0.00066989278 C5 = -0.000025101535 C6 = 0.0000030477773

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.624460
n _s	1.627921
n _r	1.632712
n _C	1.635069
n _C'	1.635735
n _0.6328	1.636360
n _D	1.639174
n _d	1.639300
n _e	1.642684
n _F	1.649314
n _F'	1.650152
n _g	1.657417
n _h	1.664332
n _i	1.676578
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7447
P_C,A'	0.3282
P_d,C	0.2970
P_e,C	0.5345
P_g,d	1.2717
P_g,F	0.5688
P_h,g	0.4854
P_i,g	1.3450
P_C',t	0.7915
P_e,C'	0.4878
P_F',e	0.5242
P_i,F'	1.8550

transmittance: 10 mm
τ_0.38	0.916
τ_0.39	0.946
τ_0.4	0.966
τ_0.42	0.982
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	0.997
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.997
τ_0.9	0.997

Poisson coef.: 0.26
Rigidity: 287 Pa*10⁸
Young module: 722 Pa*10⁸
Knoop hardness: 470
Abrasion: 171

Climatic resistance: 2
Resistance to acids: 52.2
Phosphate resistance: 3.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	76
100 ~ 300	87

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.3
-20 ~ 0	t	2.7
0 ~ 20	t	2.8
20 ~ 40	t	3
40 ~ 60	t	3.3
60 ~ 80	t	3.6
-40 ~ -20	C'	2.9
-20 ~ 0	C'	3.4
0 ~ 20	C'	3.5
20 ~ 40	C'	3.6
40 ~ 60	C'	3.8
60 ~ 80	C'	3.9
-40 ~ -20		2.9
-20 ~ 0		3.5
0 ~ 20		3.6
20 ~ 40		3.6
40 ~ 60		3.9
60 ~ 80		4
-40 ~ -20	D	3.2
-20 ~ 0	D	3.6
0 ~ 20	D	3.7
20 ~ 40	D	3.8
40 ~ 60	D	4.1
60 ~ 80	D	4.2
-40 ~ -20	e	3.4
-20 ~ 0	e	3.9
0 ~ 20	e	4.1
20 ~ 40	e	4.2
40 ~ 60	e	4.4
60 ~ 80	e	4.5
-40 ~ -20	F	4.1
-20 ~ 0	F	4.4
0 ~ 20	F	4.6
20 ~ 40	F	4.8
40 ~ 60	F	5.1
60 ~ 80	F	5.2
-40 ~ -20	g	4.6
-20 ~ 0	g	5.2
0 ~ 20	g	5.4
20 ~ 40	g	5.6
40 ~ 60	g	5.8
60 ~ 80	g	5.9