S-BSM10 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.622798 n_e = 1.625401	V_d = 57.05 V_e = 56.78	n_F - n_C = 0.010916 n_F' - n_C' = 0.011014	Coloring: 0.31 - 0.35 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 0.945443081 C2 = 0.643237376 C3 = 1.17752968 C4 = 0.0157263798 C5 = 0.00161924066 C6 = 121.361748

Refraction index
n _2.3254	-----
n _1.9701	1.598090
n _1.5296	1.603863
n _1.06	1.609976
n _t	1.610689
n _s	1.613679
n _r	1.617611
n _C	1.619488
n _C'	1.620015
n _0.6328	1.620506
n _D	1.622701
n _d	1.622798
n _e	1.625401
n _F	1.630405
n _F'	1.631029
n _g	1.636369
n _h	1.641329
n _i	1.649796
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8061
P_C,A'	0.3443
P_d,C	0.3032
P_e,C	0.5416
P_g,d	1.2431
P_g,F	0.5463
P_h,g	0.4543
P_i,g	1.2300
P_C',t	0.8543
P_e,C'	0.4934
P_F',e	0.5155
P_i,F'	1.7192

transmittance: 10 mm
τ_0.31	0.08
τ_0.32	0.31
τ_0.33	0.57
τ_0.34	0.75
τ_0.35	0.86
τ_0.36	0.929
τ_0.37	0.962
τ_0.38	0.977
τ_0.39	0.986
τ_0.4	0.991
τ_0.42	0.994
τ_0.44	0.995
τ_0.46	0.996
τ_0.48	0.997
τ_0.5	0.998
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_0.9	0.998
τ₁	0.997
τ_1.2	0.997
τ_1.4	0.99
τ_1.6	0.993
τ_1.8	0.985
τ₂	0.971
τ_2.2	0.913
τ_2.4	0.82

Poisson coef.: 0.266
Rigidity: 330 Pa*10⁸
Young module: 835 Pa*10⁸
Knoop hardness: 550
Abrasion: 142

Climatic resistance: 2
Resistance to acids: 51.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	65
100 ~ 300	76

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	2.2
40 ~ 60	t	2.3
60 ~ 80	t	2.4
-40 ~ -20	C'	2.4
-20 ~ 0	C'	2.5
0 ~ 20	C'	2.6
20 ~ 40	C'	2.6
40 ~ 60	C'	2.7
60 ~ 80	C'	2.8
-40 ~ -20		2.4
-20 ~ 0		2.5
0 ~ 20		2.6
20 ~ 40		2.7
40 ~ 60		2.8
60 ~ 80		2.8
-40 ~ -20	D	2.5
-20 ~ 0	D	2.6
0 ~ 20	D	2.7
20 ~ 40	D	2.8
40 ~ 60	D	2.9
60 ~ 80	D	3
-40 ~ -20	e	2.6
-20 ~ 0	e	2.7
0 ~ 20	e	2.8
20 ~ 40	e	2.9
40 ~ 60	e	3
60 ~ 80	e	3.1
-40 ~ -20	F	3
-20 ~ 0	F	3.1
0 ~ 20	F	3.2
20 ~ 40	F	3.3
40 ~ 60	F	3.4
60 ~ 80	F	3.5
-40 ~ -20	g	3.3
-20 ~ 0	g	3.4
0 ~ 20	g	3.5
20 ~ 40	g	3.6
40 ~ 60	g	3.8
60 ~ 80	g	3.9