PBH23 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.784701 n_e = 1.791765	V_d = 26.21 V_e = 26.01	n_F - n_C = 0.029931 n_F' - n_C' = 0.030436	Coloring: 0.37 - 0.42 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 3.0554324 C2 = -0.010867434 C3 = 0.038522891 C4 = 0.0030173971 C5 = -0.0002129474 C6 = 0.000024864803

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.756248
n _s	1.762343
n _r	1.771434
n _C	1.776096
n _C'	1.777433
n _0.6328	1.778693
n _D	1.784442
n _d	1.784701
n _e	1.791765
n _F	1.806027
n _F'	1.807869
n _g	1.824233
n _h	1.840524
n _i	1.871353
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6631
P_C,A'	0.3053
P_d,C	0.2874
P_e,C	0.5235
P_g,d	1.3207
P_g,F	0.6082
P_h,g	0.5442
P_i,g	1.5742
P_C',t	0.7077
P_e,C'	0.4788
P_F',e	0.5380
P_i,F'	2.1209

transmittance: 10 mm
τ_0.42	0.948
τ_0.44	0.975
τ_0.46	0.986
τ_0.48	0.992
τ_0.5	0.995
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.999

Poisson coef.: 0.239
Rigidity: 228 Pa*10⁸
Young module: 564 Pa*10⁸
Knoop hardness: 350
Abrasion: 184

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	75
100 ~ 300	87

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	6.2
-20 ~ 0	t	6.5
0 ~ 20	t	6.9
20 ~ 40	t	7.4
40 ~ 60	t	7.8
60 ~ 80	t	8.2
-40 ~ -20	C'	7.9
-20 ~ 0	C'	8.5
0 ~ 20	C'	9
20 ~ 40	C'	9.5
40 ~ 60	C'	9.8
60 ~ 80	C'	10
-40 ~ -20		8
-20 ~ 0		8.6
0 ~ 20		9.1
20 ~ 40		9.6
40 ~ 60		9.9
60 ~ 80		10.2
-40 ~ -20	D	8.6
-20 ~ 0	D	9.2
0 ~ 20	D	9.7
20 ~ 40	D	10.2
40 ~ 60	D	10.6
60 ~ 80	D	10.9
-40 ~ -20	e	9.4
-20 ~ 0	e	10.1
0 ~ 20	e	10.6
20 ~ 40	e	11.1
40 ~ 60	e	11.5
60 ~ 80	e	11.8
-40 ~ -20	F	11.3
-20 ~ 0	F	12.2
0 ~ 20	F	12.9
20 ~ 40	F	13.4
40 ~ 60	F	13.8
60 ~ 80	F	14.1
-40 ~ -20	g	13.6
-20 ~ 0	g	14.5
0 ~ 20	g	15.4
20 ~ 40	g	16
40 ~ 60	g	16.5
60 ~ 80	g	16.8