S-BSM93 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.640998 n_e = 1.643681	V_d = 56.92 V_e = 56.65	n_F - n_C = 0.011259 n_F' - n_C' = 0.011361	Coloring: 0.33 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6481267 C2 = -0.011553471 C3 = 0.015517531 C4 = 0.00053211731 C5 = -0.00003390687 C6 = 0.000002099346

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.628439
n _s	1.631575
n _r	1.635647
n _C	1.637585
n _C'	1.638127
n _0.6328	1.638634
n _D	1.640898
n _d	1.640998
n _e	1.643681
n _F	1.648845
n _F'	1.649489
n _g	1.655003
n _h	1.660133
n _i	1.668938
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8122
P_C,A'	0.3447
P_d,C	0.3031
P_e,C	0.5414
P_g,d	1.2438
P_g,F	0.5469
P_h,g	0.4555
P_i,g	1.2375
P_C',t	0.8604
P_e,C'	0.4932
P_F',e	0.5157
P_i,F'	1.7272

transmittance: 10 mm
τ_0.37	0.934
τ_0.38	0.963
τ_0.39	0.978
τ_0.4	0.985
τ_0.42	0.99
τ_0.44	0.992
τ_0.46	0.992
τ_0.48	0.994
τ_0.5	0.996
τ_0.55	0.997
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.997

Poisson coef.: 0.271
Rigidity: 351 Pa*10⁸
Young module: 891 Pa*10⁸
Knoop hardness: 550
Abrasion: 146

Climatic resistance: 3
Resistance to acids: 53
Phosphate resistance: 3.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	67
100 ~ 300	80

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.2
-20 ~ 0	t	1.1
0 ~ 20	t	1.3
20 ~ 40	t	1.3
40 ~ 60	t	1.5
60 ~ 80	t	1.5
-40 ~ -20	C'	1.5
-20 ~ 0	C'	1.5
0 ~ 20	C'	1.6
20 ~ 40	C'	1.7
40 ~ 60	C'	1.9
60 ~ 80	C'	2.1
-40 ~ -20		1.6
-20 ~ 0		1.6
0 ~ 20		1.6
20 ~ 40		1.7
40 ~ 60		1.9
60 ~ 80		2.1
-40 ~ -20	D	1.7
-20 ~ 0	D	1.7
0 ~ 20	D	1.7
20 ~ 40	D	1.9
40 ~ 60	D	2
60 ~ 80	D	2.2
-40 ~ -20	e	1.8
-20 ~ 0	e	1.8
0 ~ 20	e	1.9
20 ~ 40	e	2
40 ~ 60	e	2.2
60 ~ 80	e	2.4
-40 ~ -20	F	2
-20 ~ 0	F	2.1
0 ~ 20	F	2.2
20 ~ 40	F	2.4
40 ~ 60	F	2.6
60 ~ 80	F	2.9
-40 ~ -20	g	2.4
-20 ~ 0	g	2.4
0 ~ 20	g	2.6
20 ~ 40	g	2.7
40 ~ 60	g	3
60 ~ 80	g	3.2