BSM 6 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.613749 n_e = 1.616344	V_d = 56.36 V_e = 56.08	n_F - n_C = 0.010888 n_F' - n_C' = 0.010990	Coloring: 0.30 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5601339 C2 = -0.009371199 C3 = 0.015290933 C4 = 0.00040740566 C5 = -0.000021956285 C6 = 0.0000015738984

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.601792
n _s	1.604714
n _r	1.608593
n _C	1.610455
n _C'	1.610978
n _0.6328	1.611467
n _D	1.613652
n _d	1.613749
n _e	1.616344
n _F	1.621344
n _F'	1.621968
n _g	1.627313
n _h	1.632287
n _i	1.640826
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7956
P_C,A'	0.3418
P_d,C	0.3024
P_e,C	0.5408
P_g,d	1.2457
P_g,F	0.5481
P_h,g	0.4568
P_i,g	1.2410
P_C',t	0.8436
P_e,C'	0.4928
P_F',e	0.5165
P_i,F'	1.7319

transmittance: 10 mm
τ_0.36	0.928
τ_0.37	0.959
τ_0.38	0.975
τ_0.39	0.983
τ_0.4	0.989
τ_0.42	0.993
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	0.997
τ_0.65	0.997
τ_0.7	0.997

Poisson coef.: 0.267
Rigidity: 312 Pa*10⁸
Young module: 790 Pa*10⁸
Knoop hardness: 520
Abrasion: 141

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	66
100 ~ 300	77

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3.2
-20 ~ 0	t	3.2
0 ~ 20	t	3
20 ~ 40	t	3
40 ~ 60	t	3.1
60 ~ 80	t	3.1
-40 ~ -20	C'	3.8
-20 ~ 0	C'	3.7
0 ~ 20	C'	3.6
20 ~ 40	C'	3.6
40 ~ 60	C'	3.6
60 ~ 80	C'	3.7
-40 ~ -20		3.8
-20 ~ 0		3.7
0 ~ 20		3.7
20 ~ 40		3.7
40 ~ 60		3.7
60 ~ 80		3.8
-40 ~ -20	D	4
-20 ~ 0	D	3.9
0 ~ 20	D	3.8
20 ~ 40	D	3.8
40 ~ 60	D	3.8
60 ~ 80	D	3.9
-40 ~ -20	e	4
-20 ~ 0	e	4
0 ~ 20	e	4
20 ~ 40	e	4.1
40 ~ 60	e	4.2
60 ~ 80	e	4.3
-40 ~ -20	F	4.6
-20 ~ 0	F	4.4
0 ~ 20	F	4.3
20 ~ 40	F	4.3
40 ~ 60	F	4.3
60 ~ 80	F	4.4
-40 ~ -20	g	4.9
-20 ~ 0	g	4.8
0 ~ 20	g	4.7
20 ~ 40	g	4.8
40 ~ 60	g	4.8
60 ~ 80	g	4.9