BSL22 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.518205 n_e = 1.520107	V_d = 65.03 V_e = 64.86	n_F - n_C = 0.007967 n_F' - n_C' = 0.008017	Coloring: 0.29 - 0.34 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.2739528 C2 = -0.0091160058 C3 = 0.01226882 C4 = -0.00031677862 C5 = 0.000060075221 C6 = -0.0000028098187

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.508729
n _s	1.511216
n _r	1.514314
n _C	1.515742
n _C'	1.516138
n _0.6328	1.516506
n _D	1.518134
n _d	1.518205
n _e	1.520107
n _F	1.523710
n _F'	1.524156
n _g	1.527952
n _h	1.531452
n _i	1.537354
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8801
P_C,A'	0.3626
P_d,C	0.3091
P_e,C	0.5477
P_g,d	1.2232
P_g,F	0.5324
P_h,g	0.4392
P_i,g	1.1801
P_C',t	0.9297
P_e,C'	0.4981
P_F',e	0.5081
P_i,F'	1.6565

transmittance: 10 mm
τ_0.35	0.941
τ_0.36	0.968
τ_0.37	0.979
τ_0.38	0.98
τ_0.39	0.99
τ_0.4	0.994
τ_0.42	0.994
τ_0.44	0.994
τ_0.46	0.995
τ_0.48	0.996
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
τ_0.8	0.998
τ_0.9	0.997

Poisson coef.: 0.205
Rigidity: 345 Pa*10⁸
Young module: 830 Pa*10⁸
Knoop hardness: 570
Abrasion: 98

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	71
100 ~ 300	82

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	2.4
-20 ~ 0	C'	2.5
0 ~ 20	C'	2.6
20 ~ 40	C'	2.7
40 ~ 60	C'	2.8
60 ~ 80	C'	2.9
-40 ~ -20	D	2.5
-20 ~ 0	D	2.6
0 ~ 20	D	2.7
20 ~ 40	D	2.9
40 ~ 60	D	3
60 ~ 80	D	3.1
-40 ~ -20	e	2.6
-20 ~ 0	e	2.7
0 ~ 20	e	2.8
20 ~ 40	e	3
40 ~ 60	e	3.1
60 ~ 80	e	3.3
-40 ~ -20	F	2.9
-20 ~ 0	F	3
0 ~ 20	F	3.1
20 ~ 40	F	3.2
40 ~ 60	F	3.4
60 ~ 80	F	3.5
-40 ~ -20	g	3.1
-20 ~ 0	g	3.2
0 ~ 20	g	3.3
20 ~ 40	g	3.5
40 ~ 60	g	3.7
60 ~ 80	g	3.9