PBH 3 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.739997 n_e = 1.746176	V_d = 28.28 V_e = 28.06	n_F - n_C = 0.026163 n_F' - n_C' = 0.026586	Coloring: 0.35 - 0.41 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.59470208 C2 = 0.317791814 C3 = 1.29219485 C4 = 0.0122277091 C5 = 0.0544975824 C6 = 147.63368

Refraction index
n _2.3254	-----
n _1.9701	1.699167
n _1.5296	1.705181
n _1.06	1.713571
n _t	1.714763
n _s	1.720235
n _r	1.728323
n _C	1.732439
n _C'	1.733616
n _0.6328	1.734725
n _D	1.739771
n _d	1.739997
n _e	1.746176
n _F	1.758603
n _F'	1.760203
n _g	1.774374
n _h	1.788373
n _i	1.814504
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6756
P_C,A'	0.3091
P_d,C	0.2888
P_e,C	0.5250
P_g,d	1.3139
P_g,F	0.6028
P_h,g	0.5350
P_i,g	1.5338
P_C',t	0.7206
P_e,C'	0.4800
P_F',e	0.5361
P_i,F'	2.0754

transmittance: 10 mm
τ_0.35	0.1
τ_0.36	0.4
τ_0.37	0.66
τ_0.38	0.79
τ_0.39	0.86
τ_0.4	0.913
τ_0.42	0.959
τ_0.44	0.978
τ_0.46	0.988
τ_0.48	0.993
τ_0.5	0.996
τ_0.55	0.998
τ_0.6	0.999
τ_0.65	0.998
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	0.996
τ_1.8	0.986
τ₂	0.977
τ_2.2	0.951
τ_2.4	0.934

Poisson coef.: 0.237
Rigidity: 219 Pa*10⁸
Young module: 543 Pa*10⁸
Knoop hardness: 360
Abrasion: 182

Climatic resistance: 2
Resistance to acids: 3.2
Phosphate resistance: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	83
100 ~ 300	92

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	4.3
-20 ~ 0	t	4.6
0 ~ 20	t	4.8
20 ~ 40	t	5.1
40 ~ 60	t	5.3
60 ~ 80	t	5.5
-40 ~ -20	C'	6
-20 ~ 0	C'	6.2
0 ~ 20	C'	6.5
20 ~ 40	C'	6.8
40 ~ 60	C'	7
60 ~ 80	C'	7.3
-40 ~ -20		6.1
-20 ~ 0		6.3
0 ~ 20		6.6
20 ~ 40		6.9
40 ~ 60		7.2
60 ~ 80		7.5
-40 ~ -20	D	6.6
-20 ~ 0	D	6.9
0 ~ 20	D	7.2
20 ~ 40	D	7.5
40 ~ 60	D	7.8
60 ~ 80	D	8.1
-40 ~ -20	e	7.3
-20 ~ 0	e	7.6
0 ~ 20	e	7.9
20 ~ 40	e	8.2
40 ~ 60	e	8.5
60 ~ 80	e	8.9
-40 ~ -20	F	8.9
-20 ~ 0	F	9.3
0 ~ 20	F	9.7
20 ~ 40	F	10
40 ~ 60	F	10.4
60 ~ 80	F	10.8
-40 ~ -20	g	10.8
-20 ~ 0	g	11.2
0 ~ 20	g	11.7
20 ~ 40	g	12.1
40 ~ 60	g	12.6
60 ~ 80	g	13