BSM10 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.622799 n_e = 1.625401	V_d = 57.06 V_e = 56.78	n_F - n_C = 0.010914 n_F' - n_C' = 0.011012	Coloring: 0.32 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5891109 C2 = -0.0098791548 C3 = 0.015550474 C4 = 0.00036642761 C5 = -0.000018297818 C6 = 0.0000014601532

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.610717
n _s	1.613693
n _r	1.617615
n _C	1.619490
n _C'	1.620016
n _0.6328	1.620507
n _D	1.622701
n _d	1.622799
n _e	1.625401
n _F	1.630404
n _F'	1.631029
n _g	1.636370
n _h	1.641337
n _i	1.649862
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8038
P_C,A'	0.3438
P_d,C	0.3031
P_e,C	0.5415
P_g,d	1.2434
P_g,F	0.5465
P_h,g	0.4551
P_i,g	1.2362
P_C',t	0.8520
P_e,C'	0.4933
P_F',e	0.5156
P_i,F'	1.7256

transmittance: 10 mm
τ_0.37	0.941
τ_0.38	0.965
τ_0.39	0.977
τ_0.4	0.986
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	0.996
τ_0.7	0.997
τ_0.8	0.997
τ_0.9	0.997

Poisson coef.: 0.269
Rigidity: 323 Pa*10⁸
Young module: 820 Pa*10⁸
Knoop hardness: 540
Abrasion: 152

Climatic resistance: 3
Resistance to acids: 52.2
Phosphate resistance: 2.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	68
100 ~ 300	80

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.7
-20 ~ 0	t	1.7
0 ~ 20	t	1.8
20 ~ 40	t	1.9
40 ~ 60	t	2
60 ~ 80	t	2.3
-40 ~ -20	C'	2
-20 ~ 0	C'	2.1
0 ~ 20	C'	2.1
20 ~ 40	C'	2.2
40 ~ 60	C'	2.3
60 ~ 80	C'	2.6
-40 ~ -20		2
-20 ~ 0		2.1
0 ~ 20		2.1
20 ~ 40		2.2
40 ~ 60		2.3
60 ~ 80		2.6
-40 ~ -20	D	2.1
-20 ~ 0	D	2.2
0 ~ 20	D	2.2
20 ~ 40	D	2.4
40 ~ 60	D	2.4
60 ~ 80	D	2.7
-40 ~ -20	e	2.3
-20 ~ 0	e	2.3
0 ~ 20	e	2.4
20 ~ 40	e	2.5
40 ~ 60	e	2.7
60 ~ 80	e	2.9
-40 ~ -20	F	2.5
-20 ~ 0	F	2.6
0 ~ 20	F	2.7
20 ~ 40	F	2.9
40 ~ 60	F	3.1
60 ~ 80	F	3.2
-40 ~ -20	g	2.9
-20 ~ 0	g	3
0 ~ 20	g	3.1
20 ~ 40	g	3.3
40 ~ 60	g	3.5
60 ~ 80	g	3.6