BSM16 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.620410 n_e = 1.622865	V_d = 60.27 V_e = 60.00	n_F - n_C = 0.010293 n_F' - n_C' = 0.010380	Coloring: 0.30 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5859263 C2 = -0.011435101 C3 = 0.013872958 C4 = 0.00051696183 C5 = -0.000037682934 C6 = 0.0000020584486

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.608763
n _s	1.611713
n _r	1.615492
n _C	1.617277
n _C'	1.617776
n _0.6328	1.618242
n _D	1.620318
n _d	1.620410
n _e	1.622865
n _F	1.627571
n _F'	1.628156
n _g	1.633156
n _h	1.637784
n _i	1.645675
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8271
P_C,A'	0.3482
P_d,C	0.3043
P_e,C	0.5428
P_g,d	1.2382
P_g,F	0.5425
P_h,g	0.4495
P_i,g	1.2162
P_C',t	0.8756
P_e,C'	0.4943
P_F',e	0.5140
P_i,F'	1.7019

transmittance: 10 mm
τ_0.36	0.914
τ_0.37	0.949
τ_0.38	0.968
τ_0.39	0.978
τ_0.4	0.985
τ_0.42	0.989
τ_0.44	0.99
τ_0.46	0.992
τ_0.48	0.994
τ_0.5	0.996
τ_0.55	0.997
τ_0.6	0.997
τ_0.65	0.996
τ_0.7	0.997

Poisson coef.: 0.264
Rigidity: 348 Pa*10⁸
Young module: 879 Pa*10⁸
Knoop hardness: 550
Abrasion: 148

Climatic resistance: 3
Resistance to acids: 53.2
Phosphate resistance: 4.2

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	1.1
-20 ~ 0	t	1.2
0 ~ 20	t	1.4
20 ~ 40	t	1.5
40 ~ 60	t	1.6
60 ~ 80	t	1.9
-40 ~ -20	C'	1.4
-20 ~ 0	C'	1.5
0 ~ 20	C'	1.7
20 ~ 40	C'	1.8
40 ~ 60	C'	1.9
60 ~ 80	C'	2.2
-40 ~ -20		1.4
-20 ~ 0		1.5
0 ~ 20		1.7
20 ~ 40		1.8
40 ~ 60		1.9
60 ~ 80		2.2
-40 ~ -20	D	1.5
-20 ~ 0	D	1.7
0 ~ 20	D	1.8
20 ~ 40	D	1.9
40 ~ 60	D	2
60 ~ 80	D	2.3
-40 ~ -20	e	1.6
-20 ~ 0	e	1.8
0 ~ 20	e	1.9
20 ~ 40	e	2
40 ~ 60	e	2.1
60 ~ 80	e	2.4
-40 ~ -20	F	1.9
-20 ~ 0	F	2.1
0 ~ 20	F	2.2
20 ~ 40	F	2.3
40 ~ 60	F	2.5
60 ~ 80	F	2.8
-40 ~ -20	g	2.2
-20 ~ 0	g	2.3
0 ~ 20	g	2.5
20 ~ 40	g	2.6
40 ~ 60	g	2.7
60 ~ 80	g	3.1