PBH 1 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.717361 n_e = 1.723106	V_d = 29.51 V_e = 29.29	n_F - n_C = 0.024306 n_F' - n_C' = 0.024687	Coloring: 0.34 - 0.39 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.55408138 C2 = 0.289397861 C3 = 1.06727944 C4 = 0.0120146818 C5 = 0.0532883208 C6 = 122.863029

Refraction index
n _2.3254	-----
n _1.9701	1.678546
n _1.5296	1.684496
n _1.06	1.692582
n _t	1.693713
n _s	1.698883
n _r	1.706470
n _C	1.710316
n _C'	1.711415
n _0.6328	1.712449
n _D	1.717150
n _d	1.717361
n _e	1.723106
n _F	1.734623
n _F'	1.736102
n _g	1.749172
n _h	1.762023
n _i	1.785846
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6830
P_C,A'	0.3113
P_d,C	0.2898
P_e,C	0.5261
P_g,d	1.3087
P_g,F	0.5985
P_h,g	0.5287
P_i,g	1.5088
P_C',t	0.7282
P_e,C'	0.4809
P_F',e	0.5346
P_i,F'	2.0465

transmittance: 10 mm
τ_0.34	0.03
τ_0.35	0.35
τ_0.36	0.7
τ_0.37	0.86
τ_0.38	0.93
τ_0.39	0.958
τ_0.4	0.972
τ_0.42	0.986
τ_0.44	0.991
τ_0.46	0.994
τ_0.48	0.996
τ_0.5	0.997
τ_0.55	0.999
τ_0.6	0.999
τ_0.65	0.999
τ_0.7	0.999
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.999
τ_1.2	0.999
τ_1.4	0.997
τ_1.6	0.997
τ_1.8	0.989
τ₂	0.982
τ_2.2	0.96
τ_2.4	0.948

Poisson coef.: 0.234
Rigidity: 225 Pa*10⁸
Young module: 556 Pa*10⁸
Knoop hardness: 390
Abrasion: 176

Climatic resistance: 1
Resistance to acids: 3.2
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	80
100 ~ 300	89

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	4.7
-20 ~ 0	t	5
0 ~ 20	t	5.2
20 ~ 40	t	5.4
40 ~ 60	t	5.7
60 ~ 80	t	5.9
-40 ~ -20	C'	5.9
-20 ~ 0	C'	6.2
0 ~ 20	C'	6.4
20 ~ 40	C'	6.7
40 ~ 60	C'	6.9
60 ~ 80	C'	7.2
-40 ~ -20		6
-20 ~ 0		6.2
0 ~ 20		6.5
20 ~ 40		6.8
40 ~ 60		7.1
60 ~ 80		7.3
-40 ~ -20	D	6.5
-20 ~ 0	D	6.7
0 ~ 20	D	7
20 ~ 40	D	7.3
40 ~ 60	D	7.6
60 ~ 80	D	7.9
-40 ~ -20	e	7.1
-20 ~ 0	e	7.4
0 ~ 20	e	7.7
20 ~ 40	e	8
40 ~ 60	e	8.3
60 ~ 80	e	8.6
-40 ~ -20	F	8.6
-20 ~ 0	F	8.9
0 ~ 20	F	9.2
20 ~ 40	F	9.6
40 ~ 60	F	9.9
60 ~ 80	F	10.3
-40 ~ -20	g	10.2
-20 ~ 0	g	10.6
0 ~ 20	g	11
20 ~ 40	g	11.4
40 ~ 60	g	11.8
60 ~ 80	g	12.2