BAM 3 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.582672 n_e = 1.585655	V_d = 46.42 V_e = 46.12	n_F - n_C = 0.012551 n_F' - n_C' = 0.012696	Coloring: 0.32 - 0.35 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.26474232 C2 = 0.189784008 C3 = 1.10509391 C4 = 0.00791188099 C5 = 0.0380670529 C6 = 133.831631

Refraction index
n _2.3254	-----
n _1.9701	1.557556
n _1.5296	1.562783
n _1.06	1.568691
n _t	1.569418
n _s	1.572555
n _r	1.576840
n _C	1.578932
n _C'	1.579522
n _0.6328	1.580075
n _D	1.582562
n _d	1.582672
n _e	1.585655
n _F	1.591483
n _F'	1.592219
n _g	1.598590
n _h	1.604639
n _i	1.615296
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7579
P_C,A'	0.3314
P_d,C	0.2980
P_e,C	0.5356
P_g,d	1.2681
P_g,F	0.5661
P_h,g	0.4819
P_i,g	1.3310
P_C',t	0.8049
P_e,C'	0.4886
P_F',e	0.5229
P_i,F'	1.8386

transmittance: 10 mm
τ_0.32	0.07
τ_0.33	0.45
τ_0.34	0.76
τ_0.35	0.89
τ_0.36	0.94
τ_0.37	0.964
τ_0.38	0.975
τ_0.39	0.984
τ_0.4	0.989
τ_0.42	0.993
τ_0.44	0.994
τ_0.46	0.995
τ_0.48	0.997
τ_0.5	0.998
τ_0.55	0.999
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.999
τ_1.2	0.999
τ_1.4	0.992
τ_1.6	0.994
τ_1.8	0.979
τ₂	0.963
τ_2.2	0.911
τ_2.4	0.88

Poisson coef.: 0.237
Rigidity: 275 Pa*10⁸
Young module: 681 Pa*10⁸
Knoop hardness: 490
Abrasion: 147

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	81
100 ~ 300	92

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2
-20 ~ 0	t	2.1
0 ~ 20	t	2.2
20 ~ 40	t	2.3
40 ~ 60	t	2.3
60 ~ 80	t	2.4
-40 ~ -20	C'	2.5
-20 ~ 0	C'	2.6
0 ~ 20	C'	2.7
20 ~ 40	C'	2.8
40 ~ 60	C'	2.9
60 ~ 80	C'	3
-40 ~ -20		2.5
-20 ~ 0		2.6
0 ~ 20		2.7
20 ~ 40		2.8
40 ~ 60		2.9
60 ~ 80		3
-40 ~ -20	D	2.7
-20 ~ 0	D	2.8
0 ~ 20	D	2.9
20 ~ 40	D	3
40 ~ 60	D	3.1
60 ~ 80	D	3.2
-40 ~ -20	e	2.9
-20 ~ 0	e	3
0 ~ 20	e	3.1
20 ~ 40	e	3.2
40 ~ 60	e	3.4
60 ~ 80	e	3.5
-40 ~ -20	F	3.4
-20 ~ 0	F	3.5
0 ~ 20	F	3.7
20 ~ 40	F	3.8
40 ~ 60	F	3.9
60 ~ 80	F	4.1
-40 ~ -20	g	3.9
-20 ~ 0	g	4.1
0 ~ 20	g	4.2
20 ~ 40	g	4.4
40 ~ 60	g	4.6
60 ~ 80	g	4.7