PBH 3W - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.739997 n_e = 1.746178	V_d = 28.28 V_e = 28.07	n_F - n_C = 0.026159 n_F' - n_C' = 0.026582	Coloring: 0.35 - 0.40 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.9157717 C2 = -0.0100817 C3 = 0.03409894 C4 = 0.0021965014 C5 = -0.00012386955 C6 = 0.000015766843

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.714802
n _s	1.720265
n _r	1.728329
n _C	1.732440
n _C'	1.733616
n _0.6328	1.734725
n _D	1.739771
n _d	1.739997
n _e	1.746178
n _F	1.758600
n _F'	1.760199
n _g	1.774340
n _h	1.788295
n _i	1.814319
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6742
P_C,A'	0.3086
P_d,C	0.2888
P_e,C	0.5251
P_g,d	1.3127
P_g,F	0.6016
P_h,g	0.5334
P_i,g	1.5282
P_C',t	0.7191
P_e,C'	0.4801
P_F',e	0.5359
P_i,F'	2.0688

transmittance: 10 mm
τ_0.39	0.92
τ_0.4	0.95
τ_0.42	0.977
τ_0.44	0.987
τ_0.46	0.991
τ_0.48	0.994
τ_0.5	0.996
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.999

Poisson coef.: 0.237
Rigidity: 221 Pa*10⁸
Young module: 547 Pa*10⁸
Knoop hardness: 350
Abrasion: 193

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	82
100 ~ 300	92

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	4.5
-20 ~ 0	t	4.8
0 ~ 20	t	5.1
20 ~ 40	t	5.5
40 ~ 60	t	5.9
60 ~ 80	t	6.4
-40 ~ -20	C'	6.3
-20 ~ 0	C'	6.6
0 ~ 20	C'	6.9
20 ~ 40	C'	7.3
40 ~ 60	C'	7.7
60 ~ 80	C'	8.2
-40 ~ -20		6.5
-20 ~ 0		6.8
0 ~ 20		7.1
20 ~ 40		7.4
40 ~ 60		7.9
60 ~ 80		8.4
-40 ~ -20	D	7
-20 ~ 0	D	7.3
0 ~ 20	D	7.6
20 ~ 40	D	8
40 ~ 60	D	8.5
60 ~ 80	D	9
-40 ~ -20	e	7.8
-20 ~ 0	e	8.1
0 ~ 20	e	8.4
20 ~ 40	e	8.8
40 ~ 60	e	9.3
60 ~ 80	e	9.7
-40 ~ -20	F	9.3
-20 ~ 0	F	9.7
0 ~ 20	F	10.1
20 ~ 40	F	10.6
40 ~ 60	F	11.2
60 ~ 80	F	11.7
-40 ~ -20	g	11.2
-20 ~ 0	g	11.7
0 ~ 20	g	12.2
20 ~ 40	g	12.8
40 ~ 60	g	13.4
60 ~ 80	g	14