S-BSM 9 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.614046 n_e = 1.616706	V_d = 54.99 V_e = 54.70	n_F - n_C = 0.011166 n_F' - n_C' = 0.011273	Coloring: 0.33 - 0.37 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.37020077 C2 = 0.189397267 C3 = 1.24202324 C4 = 0.00757631457 C5 = 0.0300787515 C6 = 131.350111

Refraction index
n _2.3254	-----
n _1.9701	1.589320
n _1.5296	1.594989
n _1.06	1.601060
n _t	1.601773
n _s	1.604782
n _r	1.608764
n _C	1.610672
n _C'	1.611208
n _0.6328	1.611709
n _D	1.613947
n _d	1.614046
n _e	1.616706
n _F	1.621839
n _F'	1.622481
n _g	1.627990
n _h	1.633138
n _i	1.642003
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7969
P_C,A'	0.3418
P_d,C	0.3021
P_e,C	0.5403
P_g,d	1.2487
P_g,F	0.5508
P_h,g	0.4609
P_i,g	1.2548
P_C',t	0.8449
P_e,C'	0.4923
P_F',e	0.5171
P_i,F'	1.7482

transmittance: 10 mm
τ_0.33	0.03
τ_0.34	0.28
τ_0.35	0.6
τ_0.36	0.8
τ_0.37	0.904
τ_0.38	0.947
τ_0.39	0.969
τ_0.4	0.98
τ_0.42	0.987
τ_0.44	0.989
τ_0.46	0.991
τ_0.48	0.993
τ_0.5	0.995
τ_0.55	0.997
τ_0.6	0.996
τ_0.65	0.995
τ_0.7	0.996
τ_0.8	0.998
τ_0.9	0.997
τ₁	0.995
τ_1.2	0.996
τ_1.4	0.992
τ_1.6	0.994
τ_1.8	0.989
τ₂	0.98
τ_2.2	0.94
τ_2.4	0.88

Poisson coef.: 0.264
Rigidity: 342 Pa*10⁸
Young module: 865 Pa*10⁸
Knoop hardness: 560
Abrasion: 124

Climatic resistance: 2
Resistance to acids: 4.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	64
100 ~ 300	77

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.8
-20 ~ 0	t	2.9
0 ~ 20	t	3
20 ~ 40	t	3
40 ~ 60	t	3.1
60 ~ 80	t	3.2
-40 ~ -20	C'	3.2
-20 ~ 0	C'	3.3
0 ~ 20	C'	3.4
20 ~ 40	C'	3.5
40 ~ 60	C'	3.6
60 ~ 80	C'	3.7
-40 ~ -20		3.3
-20 ~ 0		3.3
0 ~ 20		3.4
20 ~ 40		3.5
40 ~ 60		3.6
60 ~ 80		3.7
-40 ~ -20	D	3.4
-20 ~ 0	D	3.5
0 ~ 20	D	3.6
20 ~ 40	D	3.6
40 ~ 60	D	3.7
60 ~ 80	D	3.8
-40 ~ -20	e	3.5
-20 ~ 0	e	3.6
0 ~ 20	e	3.7
20 ~ 40	e	3.8
40 ~ 60	e	3.9
60 ~ 80	e	4
-40 ~ -20	F	3.9
-20 ~ 0	F	4
0 ~ 20	F	4.1
20 ~ 40	F	4.2
40 ~ 60	F	4.3
60 ~ 80	F	4.4
-40 ~ -20	g	4.2
-20 ~ 0	g	4.4
0 ~ 20	g	4.5
20 ~ 40	g	4.6
40 ~ 60	g	4.7
60 ~ 80	g	4.9