S-BSM14 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.603111 n_e = 1.605483	V_d = 60.64 V_e = 60.38	n_F - n_C = 0.009945 n_F' - n_C' = 0.010026	Coloring: 0.30 - 0.35 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.2828627 C2 = 0.247647429 C3 = 1.10383999 C4 = 0.0122902399 C5 = -0.00613142361 C6 = 106.883378

Refraction index
n _2.3254	-----
n _1.9701	1.578797
n _1.5296	1.584908
n _1.06	1.591108
n _t	1.591804
n _s	1.594670
n _r	1.598345
n _C	1.600078
n _C'	1.600562
n _0.6328	1.601013
n _D	1.603023
n _d	1.603111
n _e	1.605483
n _F	1.610024
n _F'	1.610588
n _g	1.615409
n _h	1.619869
n _i	1.627451
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8319
P_C,A'	0.3500
P_d,C	0.3050
P_e,C	0.5435
P_g,d	1.2364
P_g,F	0.5414
P_h,g	0.4485
P_i,g	1.2108
P_C',t	0.8805
P_e,C'	0.4948
P_F',e	0.5132
P_i,F'	1.6955

transmittance: 10 mm
τ_0.31	0.17
τ_0.32	0.45
τ_0.33	0.68
τ_0.34	0.82
τ_0.35	0.906
τ_0.36	0.948
τ_0.37	0.968
τ_0.38	0.98
τ_0.39	0.987
τ_0.4	0.991
τ_0.42	0.994
τ_0.44	0.994
τ_0.46	0.995
τ_0.48	0.996
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.99
τ_1.6	0.995
τ_1.8	0.988
τ₂	0.976
τ_2.2	0.919
τ_2.4	0.81

Poisson coef.: 0.257
Rigidity: 338 Pa*10⁸
Young module: 849 Pa*10⁸
Knoop hardness: 570
Abrasion: 131

Climatic resistance: 3
Resistance to acids: 51.2
Phosphate resistance: 2.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	62
100 ~ 300	73

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.5
-20 ~ 0	t	2.5
0 ~ 20	t	2.6
20 ~ 40	t	2.6
40 ~ 60	t	2.7
60 ~ 80	t	2.7
-40 ~ -20	C'	2.7
-20 ~ 0	C'	2.8
0 ~ 20	C'	2.9
20 ~ 40	C'	2.9
40 ~ 60	C'	3
60 ~ 80	C'	3.1
-40 ~ -20		2.7
-20 ~ 0		2.8
0 ~ 20		2.9
20 ~ 40		3
40 ~ 60		3.1
60 ~ 80		3.1
-40 ~ -20	D	2.8
-20 ~ 0	D	2.9
0 ~ 20	D	3
20 ~ 40	D	3.1
40 ~ 60	D	3.2
60 ~ 80	D	3.3
-40 ~ -20	e	2.9
-20 ~ 0	e	3
0 ~ 20	e	3.1
20 ~ 40	e	3.2
40 ~ 60	e	3.3
60 ~ 80	e	3.4
-40 ~ -20	F	3.1
-20 ~ 0	F	3.3
0 ~ 20	F	3.4
20 ~ 40	F	3.5
40 ~ 60	F	3.6
60 ~ 80	F	3.8
-40 ~ -20	g	3.4
-20 ~ 0	g	3.5
0 ~ 20	g	3.7
20 ~ 40	g	3.8
40 ~ 60	g	4
60 ~ 80	g	4.1