PBM39 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.666799 n_e = 1.671576	V_d = 33.04 V_e = 32.80	n_F - n_C = 0.020177 n_F' - n_C' = 0.020472	Coloring: 0.34 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6957457 C2 = -0.010264221 C3 = 0.025940795 C4 = 0.0014263975 C5 = -0.000068645974 C6 = 0.0000082048945

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.646729
n _s	1.651234
n _r	1.657677
n _C	1.660910
n _C'	1.661831
n _0.6328	1.662697
n _D	1.666623
n _d	1.666799
n _e	1.671576
n _F	1.681088
n _F'	1.682303
n _g	1.692979
n _h	1.703367
n _i	1.722336
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7028
P_C,A'	0.3161
P_d,C	0.2918
P_e,C	0.5285
P_g,d	1.2975
P_g,F	0.5893
P_h,g	0.5148
P_i,g	1.4549
P_C',t	0.7484
P_e,C'	0.4829
P_F',e	0.5316
P_i,F'	1.9840

transmittance: 10 mm
τ_0.38	0.902
τ_0.39	0.938
τ_0.4	0.96
τ_0.42	0.98
τ_0.44	0.987
τ_0.46	0.991
τ_0.48	0.993
τ_0.5	0.995
τ_0.55	0.998
τ_0.6	0.997
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.999
τ_0.9	0.999

Poisson coef.: 0.224
Rigidity: 244 Pa*10⁸
Young module: 598 Pa*10⁸
Knoop hardness: 400
Abrasion: 158

Climatic resistance: 2
Resistance to acids: 1.2
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	76
100 ~ 300	86

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	4.5
-20 ~ 0	t	4.6
0 ~ 20	t	4.9
20 ~ 40	t	5
40 ~ 60	t	5.3
60 ~ 80	t	5.8
-40 ~ -20	C'	5.5
-20 ~ 0	C'	5.6
0 ~ 20	C'	5.8
20 ~ 40	C'	6
40 ~ 60	C'	6.3
60 ~ 80	C'	6.7
-40 ~ -20		5.6
-20 ~ 0		5.7
0 ~ 20		5.9
20 ~ 40		6.1
40 ~ 60		6.4
60 ~ 80		6.9
-40 ~ -20	D	5.9
-20 ~ 0	D	6.1
0 ~ 20	D	6.3
20 ~ 40	D	6.5
40 ~ 60	D	6.9
60 ~ 80	D	7.3
-40 ~ -20	e	6.4
-20 ~ 0	e	6.5
0 ~ 20	e	6.7
20 ~ 40	e	7
40 ~ 60	e	7.3
60 ~ 80	e	7.7
-40 ~ -20	F	7.5
-20 ~ 0	F	7.7
0 ~ 20	F	7.9
20 ~ 40	F	8.2
40 ~ 60	F	8.6
60 ~ 80	F	8.9
-40 ~ -20	g	8.6
-20 ~ 0	g	8.9
0 ~ 20	g	9.2
20 ~ 40	g	9.5
40 ~ 60	g	9.9
60 ~ 80	g	10.4