S-BAH54 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.695000 n_e = 1.698914	V_d = 42.16 V_e = 41.90	n_F - n_C = 0.016482 n_F' - n_C' = 0.016679	Coloring: 0.33 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.802774 C2 = -0.011441428 C3 = 0.023830231 C4 = 0.00057322688 C5 = 0.000011516047 C6 = 0.0000012065896

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.677719
n _s	1.681787
n _r	1.687369
n _C	1.690102
n _C'	1.690874
n _0.6328	1.691598
n _D	1.694855
n _d	1.695000
n _e	1.698914
n _F	1.706584
n _F'	1.707554
n _g	1.715968
n _h	1.723981
n _i	1.738130
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7512
P_C,A'	0.3295
P_d,C	0.2971
P_e,C	0.5346
P_g,d	1.2722
P_g,F	0.5693
P_h,g	0.4861
P_i,g	1.3445
P_C',t	0.7981
P_e,C'	0.4878
P_F',e	0.5241
P_i,F'	1.8551

transmittance: 10 mm
τ_0.38	0.924
τ_0.39	0.953
τ_0.4	0.968
τ_0.42	0.979
τ_0.44	0.983
τ_0.46	0.987
τ_0.48	0.99
τ_0.5	0.993
τ_0.55	0.997
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998

Poisson coef.: 0.254
Rigidity: 418 Pa*10⁸
Young module: 1048 Pa*10⁸
Knoop hardness: 610
Abrasion: 119

Climatic resistance: 1
Resistance to acids: 1
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	66
100 ~ 300	81

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	4.7
-20 ~ 0	t	4.7
0 ~ 20	t	4.9
20 ~ 40	t	4.9
40 ~ 60	t	5.1
60 ~ 80	t	5.3
-40 ~ -20	C'	5.4
-20 ~ 0	C'	5.5
0 ~ 20	C'	5.6
20 ~ 40	C'	5.7
40 ~ 60	C'	5.9
60 ~ 80	C'	6.2
-40 ~ -20		5.4
-20 ~ 0		5.5
0 ~ 20		5.7
20 ~ 40		5.8
40 ~ 60		6
60 ~ 80		6.2
-40 ~ -20	D	5.7
-20 ~ 0	D	5.7
0 ~ 20	D	5.9
20 ~ 40	D	6
40 ~ 60	D	6.3
60 ~ 80	D	6.5
-40 ~ -20	e	5.9
-20 ~ 0	e	6
0 ~ 20	e	6.1
20 ~ 40	e	6.3
40 ~ 60	e	6.6
60 ~ 80	e	6.8
-40 ~ -20	F	6.6
-20 ~ 0	F	6.7
0 ~ 20	F	6.8
20 ~ 40	F	7
40 ~ 60	F	7.3
60 ~ 80	F	7.6
-40 ~ -20	g	7.1
-20 ~ 0	g	7.3
0 ~ 20	g	7.5
20 ~ 40	g	7.8
40 ~ 60	g	8.1
60 ~ 80	g	8.4