PBM 2 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.620040 n_e = 1.624094	V_d = 36.25 V_e = 35.99	n_F - n_C = 0.017101 n_F' - n_C' = 0.017337	Coloring: 0.32 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5569657 C2 = -0.0097056299 C3 = 0.02134251 C4 = 0.0012399367 C5 = -0.000074499334 C6 = 0.000007145644

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.602765
n _s	1.606703
n _r	1.612256
n _C	1.615022
n _C'	1.615809
n _0.6328	1.616548
n _D	1.619891
n _d	1.620040
n _e	1.624094
n _F	1.632124
n _F'	1.633147
n _g	1.642091
n _h	1.650736
n _i	1.666398
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7167
P_C,A'	0.3198
P_d,C	0.2934
P_e,C	0.5304
P_g,d	1.2893
P_g,F	0.5828
P_h,g	0.5055
P_i,g	1.4213
P_C',t	0.7627
P_e,C'	0.4844
P_F',e	0.5293
P_i,F'	1.9443

transmittance: 10 mm
τ_0.36	0.93
τ_0.37	0.961
τ_0.38	0.974
τ_0.39	0.986
τ_0.4	0.992
τ_0.42	0.995
τ_0.44	0.995
τ_0.46	0.996
τ_0.48	0.997
τ_0.5	0.998
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.: 0.222
Rigidity: 230 Pa*10⁸
Young module: 561 Pa*10⁸
Knoop hardness: 420
Abrasion: 164

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	87
100 ~ 300	99

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2
-20 ~ 0	t	2.2
0 ~ 20	t	2.3
20 ~ 40	t	2.5
40 ~ 60	t	2.8
60 ~ 80	t	3
-40 ~ -20	C'	2.8
-20 ~ 0	C'	2.9
0 ~ 20	C'	3
20 ~ 40	C'	3.2
40 ~ 60	C'	3.7
60 ~ 80	C'	3.8
-40 ~ -20		2.9
-20 ~ 0		3
0 ~ 20		3.1
20 ~ 40		3.3
40 ~ 60		3.7
60 ~ 80		3.8
-40 ~ -20	D	3.1
-20 ~ 0	D	3.2
0 ~ 20	D	3.4
20 ~ 40	D	3.6
40 ~ 60	D	4
60 ~ 80	D	4.2
-40 ~ -20	e	3.4
-20 ~ 0	e	3.6
0 ~ 20	e	3.7
20 ~ 40	e	4
40 ~ 60	e	4.4
60 ~ 80	e	4.6
-40 ~ -20	F	4.2
-20 ~ 0	F	4.3
0 ~ 20	F	4.6
20 ~ 40	F	4.9
40 ~ 60	F	5.4
60 ~ 80	F	5.7
-40 ~ -20	g	5.1
-20 ~ 0	g	5.3
0 ~ 20	g	5.6
20 ~ 40	g	5.9
40 ~ 60	g	6.3
60 ~ 80	g	6.6