BAM21 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.626058 n_e = 1.629844	V_d = 39.21 V_e = 38.94	n_F - n_C = 0.015964 n_F' - n_C' = 0.016174	Coloring: 0.33 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.579457 C2 = -0.0094225577 C3 = 0.021195926 C4 = 0.0008094349 C5 = -0.000024922189 C6 = 0.0000039861235

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.609699
n _s	1.613471
n _r	1.618742
n _C	1.621351
n _C'	1.622090
n _0.6328	1.622784
n _D	1.625918
n _d	1.626058
n _e	1.629844
n _F	1.637315
n _F'	1.638264
n _g	1.646545
n _h	1.654513
n _i	1.668831
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7298
P_C,A'	0.3236
P_d,C	0.2948
P_e,C	0.5320
P_g,d	1.2832
P_g,F	0.5781
P_h,g	0.4990
P_i,g	1.3959
P_C',t	0.7761
P_e,C'	0.4857
P_F',e	0.5274
P_i,F'	1.9146

transmittance: 10 mm
τ_0.37	0.901
τ_0.38	0.932
τ_0.39	0.956
τ_0.4	0.971
τ_0.42	0.984
τ_0.44	0.987
τ_0.46	0.991
τ_0.48	0.994
τ_0.5	0.995
τ_0.55	0.997
τ_0.6	0.997
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.998
τ_0.9	0.998

Poisson coef.: 0.231
Rigidity: 267 Pa*10⁸
Young module: 657 Pa*10⁸
Knoop hardness: 450
Abrasion: 166

Climatic resistance: 2
Resistance to acids: 2.2
Phosphate resistance: 1.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	82
100 ~ 300	92

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.1
-20 ~ 0	t	2.2
0 ~ 20	t	2.3
20 ~ 40	t	2.5
40 ~ 60	t	2.8
60 ~ 80	t	3
-40 ~ -20	C'	3.1
-20 ~ 0	C'	3.2
0 ~ 20	C'	3.3
20 ~ 40	C'	3.5
40 ~ 60	C'	3.7
60 ~ 80	C'	3.9
-40 ~ -20		3.1
-20 ~ 0		3.2
0 ~ 20		3.3
20 ~ 40		3.5
40 ~ 60		3.8
60 ~ 80		3.9
-40 ~ -20	D	3.4
-20 ~ 0	D	3.5
0 ~ 20	D	3.6
20 ~ 40	D	3.8
40 ~ 60	D	4
60 ~ 80	D	4.2
-40 ~ -20	e	3.7
-20 ~ 0	e	3.8
0 ~ 20	e	3.9
20 ~ 40	e	4.1
40 ~ 60	e	4.4
60 ~ 80	e	4.6
-40 ~ -20	F	4.5
-20 ~ 0	F	4.6
0 ~ 20	F	4.8
20 ~ 40	F	5
40 ~ 60	F	5.2
60 ~ 80	F	5.5
-40 ~ -20	g	5.3
-20 ~ 0	g	5.4
0 ~ 20	g	5.6
20 ~ 40	g	5.9
40 ~ 60	g	6.1
60 ~ 80	g	6.5