BAM 4 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.605619 n_e = 1.608909	V_d = 43.72 V_e = 43.42	n_F - n_C = 0.013851 n_F' - n_C' = 0.014021	Coloring: 0.33 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5214667 C2 = -0.0079913078 C3 = 0.018919224 C4 = 0.00054923502 C5 = -0.000011507942 C6 = 0.0000025058269

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.591277
n _s	1.594597
n _r	1.599228
n _C	1.601512
n _C'	1.602158
n _0.6328	1.602765
n _D	1.605497
n _d	1.605619
n _e	1.608909
n _F	1.615363
n _F'	1.616180
n _g	1.623273
n _h	1.630044
n _i	1.642079
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7389
P_C,A'	0.3270
P_d,C	0.2965
P_e,C	0.5340
P_g,d	1.2745
P_g,F	0.5710
P_h,g	0.4888
P_i,g	1.3577
P_C',t	0.7856
P_e,C'	0.4873
P_F',e	0.5249
P_i,F'	1.8698

transmittance: 10 mm
τ_0.37	0.944
τ_0.38	0.961
τ_0.39	0.977
τ_0.4	0.987
τ_0.42	0.992
τ_0.44	0.993
τ_0.46	0.995
τ_0.48	0.997
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.997
τ_0.7	0.997
τ_0.8	0.997
τ_0.9	0.996

Poisson coef.: 0.245
Rigidity: 255 Pa*10⁸
Young module: 635 Pa*10⁸
Knoop hardness: 450
Abrasion: 165

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	80
100 ~ 300	90

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	2.6
-20 ~ 0	C'	2.7
0 ~ 20	C'	2.8
20 ~ 40	C'	3
40 ~ 60	C'	3.2
60 ~ 80	C'	3.5
-40 ~ -20	D	2.8
-20 ~ 0	D	2.9
0 ~ 20	D	3.1
20 ~ 40	D	3.3
40 ~ 60	D	3.5
60 ~ 80	D	3.8
-40 ~ -20	e	3.1
-20 ~ 0	e	3.2
0 ~ 20	e	3.4
20 ~ 40	e	3.6
40 ~ 60	e	3.8
60 ~ 80	e	4.1
-40 ~ -20	F	3.7
-20 ~ 0	F	3.8
0 ~ 20	F	4
20 ~ 40	F	4.2
40 ~ 60	F	4.5
60 ~ 80	F	4.9
-40 ~ -20	g	4.2
-20 ~ 0	g	4.4
0 ~ 20	g	4.7
20 ~ 40	g	5
40 ~ 60	g	5.3
60 ~ 80	g	5.6