PBM 1 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.625881 n_e = 1.630035	V_d = 35.70 V_e = 35.44	n_F - n_C = 0.017531 n_F' - n_C' = 0.017777	Coloring: 0.33 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5743849 C2 = -0.010002464 C3 = 0.02166382 C4 = 0.0013463294 C5 = -0.000083887231 C6 = 0.0000078154722

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.608221
n _s	1.612241
n _r	1.617914
n _C	1.620744
n _C'	1.621548
n _0.6328	1.622305
n _D	1.625728
n _d	1.625881
n _e	1.630035
n _F	1.638275
n _F'	1.639325
n _g	1.648517
n _h	1.657414
n _i	1.673566
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7143
P_C,A'	0.3189
P_d,C	0.2930
P_e,C	0.5300
P_g,d	1.2911
P_g,F	0.5842
P_h,g	0.5074
P_i,g	1.4287
P_C',t	0.7602
P_e,C'	0.4841
P_F',e	0.5299
P_i,F'	1.9531

transmittance: 10 mm
τ_0.36	0.91
τ_0.37	0.951
τ_0.38	0.969
τ_0.39	0.984
τ_0.4	0.991
τ_0.42	0.995
τ_0.44	0.995
τ_0.46	0.996
τ_0.48	0.997
τ_0.5	0.997
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.: 0.226
Rigidity: 228 Pa*10⁸
Young module: 560 Pa*10⁸
Knoop hardness: 400
Abrasion: 156

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	89
100 ~ 300	97

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.9
-20 ~ 0	t	1.9
0 ~ 20	t	2
20 ~ 40	t	2.2
40 ~ 60	t	2.5
60 ~ 80	t	2.6
-40 ~ -20	C'	2.5
-20 ~ 0	C'	2.7
0 ~ 20	C'	2.9
20 ~ 40	C'	3.2
40 ~ 60	C'	3.5
60 ~ 80	C'	3.9
-40 ~ -20		2.6
-20 ~ 0		2.8
0 ~ 20		3
20 ~ 40		3.3
40 ~ 60		3.6
60 ~ 80		3.9
-40 ~ -20	D	2.8
-20 ~ 0	D	3
0 ~ 20	D	3.3
20 ~ 40	D	3.6
40 ~ 60	D	3.9
60 ~ 80	D	4.2
-40 ~ -20	e	3.1
-20 ~ 0	e	3.4
0 ~ 20	e	3.6
20 ~ 40	e	4
40 ~ 60	e	4.3
60 ~ 80	e	4.7
-40 ~ -20	F	4
-20 ~ 0	F	4.3
0 ~ 20	F	4.6
20 ~ 40	F	4.9
40 ~ 60	F	5.3
60 ~ 80	F	5.8
-40 ~ -20	g	5.2
-20 ~ 0	g	5.4
0 ~ 20	g	5.7
20 ~ 40	g	6
40 ~ 60	g	6.4
60 ~ 80	g	6.8