BSL 1 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.510091 n_e = 1.512003	V_d = 63.63 V_e = 63.39	n_F - n_C = 0.008015 n_F' - n_C' = 0.008076	Coloring: 0.29 - 0.33 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.2513548 C2 = -0.0093148277 C3 = 0.010704574 C4 = 0.00012187894 C5 = 0.000010654019 C6 = -0.00000074428165

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.500770
n _s	1.503193
n _r	1.506224
n _C	1.507635
n _C'	1.508028
n _0.6328	1.508394
n _D	1.510019
n _d	1.510091
n _e	1.512003
n _F	1.515651
n _F'	1.516105
n _g	1.519967
n _h	1.523528
n _i	1.529531
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8564
P_C,A'	0.3550
P_d,C	0.3063
P_e,C	0.5448
P_g,d	1.2320
P_g,F	0.5383
P_h,g	0.4442
P_i,g	1.1931
P_C',t	0.9053
P_e,C'	0.4958
P_F',e	0.5117
P_i,F'	1.6749

transmittance: 10 mm
τ_0.34	0.925
τ_0.35	0.962
τ_0.36	0.979
τ_0.37	0.986
τ_0.38	0.985
τ_0.39	0.993
τ_0.4	0.995
τ_0.42	0.995
τ_0.44	0.993
τ_0.46	0.995
τ_0.48	0.995
τ_0.5	0.996
τ_0.55	0.997
τ_0.6	0.996
τ_0.65	0.995
τ_0.7	0.996
τ_0.8	0.996
τ_0.9	0.995
τ_2.3254	0.95
τ_1.9701	0.987
τ_1.5296	0.996
τ_1.06	0.996
τ_0.66	0.994
τ_0.62	0.993
τ_0.58	0.99
τ_0.54607	0.984
τ_0.4358	0.89
τ_0.4047	0.77

transmittance: 25 mm
τ_2.3254	0.88
τ_1.9701	0.968
τ_1.5296	0.99
τ_1.06	0.99
τ_0.7	0.99
τ_0.66	0.986
τ_0.62	0.983
τ_0.58	0.975
τ_0.54607	0.96
τ_0.5	0.91
τ_0.46	0.83
τ_0.4358	0.75
τ_0.42	0.66
τ_0.4047	0.52
τ_0.4	0.47
τ_0.39	0.34
τ_0.38	0.18
τ_0.37	0.05

Poisson coef.: 0.209
Rigidity: 314 Pa*10⁸
Young module: 761 Pa*10⁸
Knoop hardness: 540
Abrasion: 106

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	80
100 ~ 300	94
20 ~ 300	84

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		0.3
20 ~ 40		1.3
60 ~ 80		1.9
-40 ~ -20	e	2
20 ~ 40	e	3.4
60 ~ 80	e	4.2
-40 ~ -20	g	4.1
20 ~ 40	g	5.9
60 ~ 80	g	7

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	2.6
-20 ~ 0	C'	2.8
0 ~ 20	C'	3
20 ~ 40	C'	3.2
40 ~ 60	C'	3.4
60 ~ 80	C'	3.6
-40 ~ -20	D	2.8
-20 ~ 0	D	2.9
0 ~ 20	D	3.1
20 ~ 40	D	3.3
40 ~ 60	D	3.6
60 ~ 80	D	3.8
-40 ~ -20	e	2.9
-20 ~ 0	e	3.1
0 ~ 20	e	3.3
20 ~ 40	e	3.5
40 ~ 60	e	3.7
60 ~ 80	e	4
-40 ~ -20	F	3.1
-20 ~ 0	F	3.3
0 ~ 20	F	3.5
20 ~ 40	F	3.7
40 ~ 60	F	4
60 ~ 80	F	4.3
-40 ~ -20	g	3.4
-20 ~ 0	g	3.6
0 ~ 20	g	3.8
20 ~ 40	g	4.1
40 ~ 60	g	4.3
60 ~ 80	g	4.7
-40 ~ -20		2.7
20 ~ 40		2.9
60 ~ 80		3.1