BSM 2 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.607378 n_e = 1.609926	V_d = 56.81 V_e = 56.52	n_F - n_C = 0.010690 n_F' - n_C' = 0.010791	Coloring: 0.30 - 0.35 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.540784 C2 = -0.0092815105 C3 = 0.014903206 C4 = 0.00037790646 C5 = -0.000012452946 C6 = 0.00000070936023

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.595644
n _s	1.598517
n _r	1.602321
n _C	1.604148
n _C'	1.604660
n _0.6328	1.605140
n _D	1.607283
n _d	1.607378
n _e	1.609926
n _F	1.614838
n _F'	1.615451
n _g	1.620703
n _h	1.625583
n _i	1.633914
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7954
P_C,A'	0.3414
P_d,C	0.3022
P_e,C	0.5405
P_g,d	1.2464
P_g,F	0.5486
P_h,g	0.4564
P_i,g	1.2358
P_C',t	0.8433
P_e,C'	0.4925
P_F',e	0.5168
P_i,F'	1.7270

transmittance: 10 mm
τ_0.35	0.918
τ_0.36	0.955
τ_0.37	0.975
τ_0.38	0.984
τ_0.39	0.989
τ_0.4	0.993
τ_0.42	0.995
τ_0.44	0.995
τ_0.46	0.996
τ_0.48	0.996
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.997

Poisson coef.: 0.265
Rigidity: 309 Pa*10⁸
Young module: 782 Pa*10⁸
Knoop hardness: 540
Abrasion: 142

Climatic resistance: 2
Resistance to acids: 51.2
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	63
100 ~ 300	75

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	3.5
-20 ~ 0	C'	3.6
0 ~ 20	C'	3.6
20 ~ 40	C'	3.8
40 ~ 60	C'	4
60 ~ 80	C'	3.9
-40 ~ -20	D	3.6
-20 ~ 0	D	3.7
0 ~ 20	D	3.7
20 ~ 40	D	3.9
40 ~ 60	D	4.1
60 ~ 80	D	4.1
-40 ~ -20	e	3.7
-20 ~ 0	e	3.8
0 ~ 20	e	3.9
20 ~ 40	e	4.1
40 ~ 60	e	4.3
60 ~ 80	e	4.2
-40 ~ -20	F	4
-20 ~ 0	F	4.1
0 ~ 20	F	4.2
20 ~ 40	F	4.4
40 ~ 60	F	4.7
60 ~ 80	F	4.6
-40 ~ -20	g	4.4
-20 ~ 0	g	4.5
0 ~ 20	g	4.6
20 ~ 40	g	4.8
40 ~ 60	g	5.1
60 ~ 80	g	5