BAM 8 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.623740 n_e = 1.626888	V_d = 47.09 V_e = 46.80	n_F - n_C = 0.013243 n_F' - n_C' = 0.013392	Coloring: 0.33 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.583052 C2 = -0.0098044767 C3 = 0.017999796 C4 = 0.00062560828 C5 = -0.000030382771 C6 = 0.0000030639765

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.609672
n _s	1.613022
n _r	1.617570
n _C	1.619784
n _C'	1.620409
n _0.6328	1.620994
n _D	1.623623
n _d	1.623740
n _e	1.626888
n _F	1.633028
n _F'	1.633802
n _g	1.640490
n _h	1.646828
n _i	1.657999
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7635
P_C,A'	0.3328
P_d,C	0.2986
P_e,C	0.5364
P_g,d	1.2647
P_g,F	0.5634
P_h,g	0.4786
P_i,g	1.3220
P_C',t	0.8107
P_e,C'	0.4892
P_F',e	0.5219
P_i,F'	1.8270

transmittance: 10 mm
τ_0.38	0.931
τ_0.39	0.955
τ_0.4	0.973
τ_0.42	0.986
τ_0.44	0.99
τ_0.46	0.993
τ_0.48	0.995
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

Poisson coef.: 0.261
Rigidity: 299 Pa*10⁸
Young module: 754 Pa*10⁸
Knoop hardness: 490
Abrasion: 142

Climatic resistance: 3
Resistance to acids: 52.2
Phosphate resistance: 2.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	63
100 ~ 300	74

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	4.6
-20 ~ 0	C'	4.7
0 ~ 20	C'	4.8
20 ~ 40	C'	4.9
40 ~ 60	C'	5.1
60 ~ 80	C'	5.3
-40 ~ -20	D	4.9
-20 ~ 0	D	5
0 ~ 20	D	5.1
20 ~ 40	D	5.2
40 ~ 60	D	5.5
60 ~ 80	D	5.7
-40 ~ -20	e	5.2
-20 ~ 0	e	5.3
0 ~ 20	e	5.4
20 ~ 40	e	5.5
40 ~ 60	e	5.8
60 ~ 80	e	6
-40 ~ -20	F	5.7
-20 ~ 0	F	5.8
0 ~ 20	F	6
20 ~ 40	F	6.1
40 ~ 60	F	6.4
60 ~ 80	F	6.7
-40 ~ -20	g	6.3
-20 ~ 0	g	6.4
0 ~ 20	g	6.6
20 ~ 40	g	6.8
40 ~ 60	g	7
60 ~ 80	g	7.3