S-BSM15 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.622991 n_e = 1.625544	V_d = 58.16 V_e = 57.89	n_F - n_C = 0.010710 n_F' - n_C' = 0.010804	Coloring: 0.32 - 0.36 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 0.953128328 C2 = 0.637613977 C3 = 1.65245647 C4 = 0.00387638985 C5 = 0.0185094632 C6 = 159.442367

Refraction index
n _2.3254	-----
n _1.9701	1.597974
n _1.5296	1.603994
n _1.06	1.610277
n _t	1.610997
n _s	1.613994
n _r	1.617889
n _C	1.619739
n _C'	1.620256
n _0.6328	1.620740
n _D	1.622896
n _d	1.622991
n _e	1.625544
n _F	1.630449
n _F'	1.631061
n _g	1.636296
n _h	1.641162
n _i	1.649482
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8161
P_C,A'	0.3463
P_d,C	0.3036
P_e,C	0.5420
P_g,d	1.2421
P_g,F	0.5458
P_h,g	0.4542
P_i,g	1.2310
P_C',t	0.8644
P_e,C'	0.4937
P_F',e	0.5150
P_i,F'	1.7198

transmittance: 10 mm
τ_0.33	0.13
τ_0.34	0.44
τ_0.35	0.7
τ_0.36	0.85
τ_0.37	0.926
τ_0.38	0.959
τ_0.39	0.976
τ_0.4	0.985
τ_0.42	0.991
τ_0.44	0.992
τ_0.46	0.994
τ_0.48	0.995
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.991
τ_1.6	0.994
τ_1.8	0.987
τ₂	0.973
τ_2.2	0.918
τ_2.4	0.81

Poisson coef.: 0.265
Rigidity: 338 Pa*10⁸
Young module: 854 Pa*10⁸
Knoop hardness: 560
Abrasion: 133

Climatic resistance: 2
Resistance to acids: 52.2
Phosphate resistance: 3.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	65
100 ~ 300	78

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.3
-20 ~ 0	t	1.4
0 ~ 20	t	1.4
20 ~ 40	t	1.5
40 ~ 60	t	1.6
60 ~ 80	t	1.6
-40 ~ -20	C'	1.6
-20 ~ 0	C'	1.7
0 ~ 20	C'	1.8
20 ~ 40	C'	1.9
40 ~ 60	C'	2
60 ~ 80	C'	2.1
-40 ~ -20		1.6
-20 ~ 0		1.7
0 ~ 20		1.8
20 ~ 40		1.9
40 ~ 60		2
60 ~ 80		2.1
-40 ~ -20	D	1.7
-20 ~ 0	D	1.8
0 ~ 20	D	1.9
20 ~ 40	D	2
40 ~ 60	D	2.1
60 ~ 80	D	2.2
-40 ~ -20	e	1.8
-20 ~ 0	e	1.9
0 ~ 20	e	2
20 ~ 40	e	2.2
40 ~ 60	e	2.3
60 ~ 80	e	2.4
-40 ~ -20	F	2.1
-20 ~ 0	F	2.2
0 ~ 20	F	2.4
20 ~ 40	F	2.5
40 ~ 60	F	2.6
60 ~ 80	F	2.8
-40 ~ -20	g	2.4
-20 ~ 0	g	2.5
0 ~ 20	g	2.7
20 ~ 40	g	2.8
40 ~ 60	g	3
60 ~ 80	g	3.1