S-BSM22 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.622296 n_e = 1.625082	V_d = 53.16 V_e = 52.88	n_F - n_C = 0.011704 n_F' - n_C' = 0.011820	Coloring: 0.34 - 0.38 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.44305741 C2 = 0.140786358 C3 = 1.26093951 C4 = 0.0081920891 C5 = 0.0356911455 C6 = 131.959337

Refraction index
n _2.3254	-----
n _1.9701	1.596869
n _1.5296	1.602602
n _1.06	1.608798
n _t	1.609532
n _s	1.612641
n _r	1.616779
n _C	1.618769
n _C'	1.619328
n _0.6328	1.619852
n _D	1.622192
n _d	1.622296
n _e	1.625082
n _F	1.630473
n _F'	1.631149
n _g	1.636960
n _h	1.642410
n _i	1.651854
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7892
P_C,A'	0.3397
P_d,C	0.3012
P_e,C	0.5393
P_g,d	1.2529
P_g,F	0.5542
P_h,g	0.4656
P_i,g	1.2725
P_C',t	0.8369
P_e,C'	0.4915
P_F',e	0.5183
P_i,F'	1.7690

transmittance: 10 mm
τ_0.34	0.08
τ_0.35	0.37
τ_0.36	0.65
τ_0.37	0.81
τ_0.38	0.901
τ_0.39	0.942
τ_0.4	0.964
τ_0.42	0.981
τ_0.44	0.985
τ_0.46	0.988
τ_0.48	0.991
τ_0.5	0.994
τ_0.55	0.997
τ_0.6	0.995
τ_0.65	0.994
τ_0.7	0.996
τ_0.8	0.998
τ_0.9	0.998
τ₁	0.997
τ_1.2	0.998
τ_1.4	0.993
τ_1.6	0.995
τ_1.8	0.99
τ₂	0.98
τ_2.2	0.938
τ_2.4	0.87

Poisson coef.: 0.265
Rigidity: 345 Pa*10⁸
Young module: 874 Pa*10⁸
Knoop hardness: 580
Abrasion: 120

Climatic resistance: 2
Resistance to acids: 3.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	66
100 ~ 300	76

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3
-20 ~ 0	t	3
0 ~ 20	t	3.1
20 ~ 40	t	3.1
40 ~ 60	t	3.1
60 ~ 80	t	3.1
-40 ~ -20	C'	3.4
-20 ~ 0	C'	3.4
0 ~ 20	C'	3.5
20 ~ 40	C'	3.6
40 ~ 60	C'	3.6
60 ~ 80	C'	3.7
-40 ~ -20		3.4
-20 ~ 0		3.4
0 ~ 20		3.5
20 ~ 40		3.6
40 ~ 60		3.6
60 ~ 80		3.7
-40 ~ -20	D	3.6
-20 ~ 0	D	3.6
0 ~ 20	D	3.6
20 ~ 40	D	3.7
40 ~ 60	D	3.7
60 ~ 80	D	3.8
-40 ~ -20	e	3.7
-20 ~ 0	e	3.8
0 ~ 20	e	3.8
20 ~ 40	e	3.9
40 ~ 60	e	4
60 ~ 80	e	4
-40 ~ -20	F	4.1
-20 ~ 0	F	4.1
0 ~ 20	F	4.2
20 ~ 40	F	4.3
40 ~ 60	F	4.4
60 ~ 80	F	4.5
-40 ~ -20	g	4.4
-20 ~ 0	g	4.5
0 ~ 20	g	4.6
20 ~ 40	g	4.8
40 ~ 60	g	4.9
60 ~ 80	g	5