S-BSM16 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.620410 n_e = 1.622864	V_d = 60.28 V_e = 60.02	n_F - n_C = 0.010290 n_F' - n_C' = 0.010376	Coloring: 0.31 - 0.35 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.14490383 C2 = 0.439563911 C3 = 1.27688079 C4 = 0.0137034916 C5 = -0.00186514205 C6 = 119.535585

Refraction index
n _2.3254	-----
n _1.9701	1.595450
n _1.5296	1.601677
n _1.06	1.608029
n _t	1.608744
n _s	1.611695
n _r	1.615485
n _C	1.617275
n _C'	1.617775
n _0.6328	1.618241
n _D	1.620319
n _d	1.620410
n _e	1.622864
n _F	1.627565
n _F'	1.628151
n _g	1.633150
n _h	1.637782
n _i	1.645669
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8289
P_C,A'	0.3492
P_d,C	0.3046
P_e,C	0.5431
P_g,d	1.2379
P_g,F	0.5426
P_h,g	0.4501
P_i,g	1.2166
P_C',t	0.8775
P_e,C'	0.4945
P_F',e	0.5137
P_i,F'	1.7024

transmittance: 10 mm
τ_0.31	0.01
τ_0.32	0.18
τ_0.33	0.49
τ_0.34	0.72
τ_0.35	0.85
τ_0.36	0.924
τ_0.37	0.959
τ_0.38	0.976
τ_0.39	0.984
τ_0.4	0.989
τ_0.42	0.992
τ_0.44	0.993
τ_0.46	0.994
τ_0.48	0.996
τ_0.5	0.997
τ_0.55	0.999
τ_0.6	0.998
τ_0.65	0.997
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	0.995
τ_1.8	0.987
τ₂	0.972
τ_2.2	0.911
τ_2.4	0.79

Poisson coef.: 0.262
Rigidity: 348 Pa*10⁸
Young module: 878 Pa*10⁸
Knoop hardness: 570
Abrasion: 146

Climatic resistance: 2
Resistance to acids: 53.2
Phosphate resistance: 4.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	67
100 ~ 300	76

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.2
-20 ~ 0	t	1.2
0 ~ 20	t	1.3
20 ~ 40	t	1.4
40 ~ 60	t	1.4
60 ~ 80	t	1.6
-40 ~ -20	C'	1.4
-20 ~ 0	C'	1.5
0 ~ 20	C'	1.6
20 ~ 40	C'	1.7
40 ~ 60	C'	1.8
60 ~ 80	C'	1.9
-40 ~ -20		1.5
-20 ~ 0		1.6
0 ~ 20		1.6
20 ~ 40		1.7
40 ~ 60		1.8
60 ~ 80		1.9
-40 ~ -20	D	1.6
-20 ~ 0	D	1.7
0 ~ 20	D	1.8
20 ~ 40	D	1.9
40 ~ 60	D	2
60 ~ 80	D	2.1
-40 ~ -20	e	1.7
-20 ~ 0	e	1.8
0 ~ 20	e	1.9
20 ~ 40	e	2
40 ~ 60	e	2.1
60 ~ 80	e	2.2
-40 ~ -20	F	1.9
-20 ~ 0	F	2.1
0 ~ 20	F	2.2
20 ~ 40	F	2.3
40 ~ 60	F	2.4
60 ~ 80	F	2.5
-40 ~ -20	g	2.2
-20 ~ 0	g	2.3
0 ~ 20	g	2.5
20 ~ 40	g	2.6
40 ~ 60	g	2.7
60 ~ 80	g	2.9