PBL25Y - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.581439 n_e = 1.584824	V_d = 40.76 V_e = 40.49	n_F - n_C = 0.014262 n_F' - n_C' = 0.014441	Coloring: 0.31 - 0.34 mkm.

Type: Sellmeier
Spectral range: 0.326 - 2.325 mkm.
C1 = 1.31960626 C2 = 0.123752633 C3 = 0.210055351 C4 = 0.0101863415 C5 = 0.0483593508 C6 = 27.3272029

Refraction index
n _2.3254	-----
n _1.9701	1.553582
n _1.5296	1.559510
n _1.06	1.565883
n _t	1.566671
n _s	1.570105
n _r	1.574869
n _C	1.577217
n _C'	1.577881
n _0.6328	1.578504
n _D	1.581314
n _d	1.581439
n _e	1.584824
n _F	1.591479
n _F'	1.592322
n _g	1.599665
n _h	1.606702
n _i	1.619283
n _0.3341	1.633894
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7394
P_C,A'	0.3264
P_d,C	0.2960
P_e,C	0.5333
P_g,d	1.2779
P_g,F	0.5739
P_h,g	0.4934
P_i,g	1.3755
P_C',t	0.7859
P_e,C'	0.4867
P_F',e	0.5257
P_i,F'	1.8903

transmittance: 10 mm
τ_0.31	0.01
τ_0.32	0.35
τ_0.33	0.78
τ_0.34	0.94
τ_0.35	0.981
τ_0.36	0.993
τ_0.365	0.995
τ_0.37	0.996
τ_0.38	0.997
τ_0.39	0.998
τ_0.4	0.998
τ_0.42	0.998
τ_0.44	0.998
τ_0.46	0.999
τ_0.48	0.999
τ_0.5	0.999
τ_0.55	0.999
τ_0.6	0.999
τ_0.65	0.999
τ_0.7	0.999
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.996
τ_1.6	0.994
τ_1.8	0.979
τ₂	0.953
τ_2.2	0.905
τ_2.4	0.87

Poisson coef.: 0.219
Rigidity: 240 Pa*10⁸
Young module: 585 Pa*10⁸
Knoop hardness: 460
Abrasion: 130

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	98

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.8
-20 ~ 0	t	1.9
0 ~ 20	t	1.9
20 ~ 40	t	2
40 ~ 60	t	2.1
60 ~ 80	t	2.1
-40 ~ -20	C'	2.4
-20 ~ 0	C'	2.5
0 ~ 20	C'	2.6
20 ~ 40	C'	2.7
40 ~ 60	C'	2.8
60 ~ 80	C'	2.9
-40 ~ -20		2.5
-20 ~ 0		2.6
0 ~ 20		2.7
20 ~ 40		2.8
40 ~ 60		2.9
60 ~ 80		3
-40 ~ -20	D	2.7
-20 ~ 0	D	2.8
0 ~ 20	D	2.9
20 ~ 40	D	3
40 ~ 60	D	3.1
60 ~ 80	D	3.2
-40 ~ -20	e	2.9
-20 ~ 0	e	3.1
0 ~ 20	e	3.2
20 ~ 40	e	3.3
40 ~ 60	e	3.4
60 ~ 80	e	3.5
-40 ~ -20	F	3.5
-20 ~ 0	F	3.7
0 ~ 20	F	3.8
20 ~ 40	F	4
40 ~ 60	F	4.1
60 ~ 80	F	4.3
-40 ~ -20	g	4.2
-20 ~ 0	g	4.4
0 ~ 20	g	4.5
20 ~ 40	g	4.7
40 ~ 60	g	4.9
60 ~ 80	g	5.1
-40 ~ -20	i	6.3
-20 ~ 0	i	6.5
0 ~ 20	i	6.8
20 ~ 40	i	7
40 ~ 60	i	7.3
60 ~ 80	i	7.5