PBM2Y - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.620041 n_e = 1.624092	V_d = 36.26 V_e = 36.01	n_F - n_C = 0.017095 n_F' - n_C' = 0.017329	Coloring: 0.32 - 0.35 mkm.

Type: Sellmeier
Spectral range: 0.326 - 2.325 mkm.
C1 = 1.39446503 C2 = 0.159230985 C3 = 0.245470216 C4 = 0.0110571872 C5 = 0.0507194882 C6 = 31.4440142

Refraction index
n _2.3254	-----
n _1.9701	1.589094
n _1.5296	1.595027
n _1.06	1.601869
n _t	1.602754
n _s	1.606678
n _r	1.612245
n _C	1.615018
n _C'	1.615806
n _0.6328	1.616546
n _D	1.619891
n _d	1.620041
n _e	1.624092
n _F	1.632114
n _F'	1.633135
n _g	1.642071
n _h	1.650710
n _i	1.666350
n _0.3341	1.684858
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7174
P_C,A'	0.3207
P_d,C	0.2938
P_e,C	0.5308
P_g,d	1.2886
P_g,F	0.5824
P_h,g	0.5053
P_i,g	1.4202
P_C',t	0.7634
P_e,C'	0.4847
P_F',e	0.5289
P_i,F'	1.9429

transmittance: 10 mm
τ_0.32	0.04
τ_0.33	0.44
τ_0.34	0.81
τ_0.35	0.944
τ_0.36	0.98
τ_0.365	0.986
τ_0.37	0.991
τ_0.38	0.995
τ_0.39	0.996
τ_0.4	0.997
τ_0.42	0.998
τ_0.44	0.998
τ_0.46	0.998
τ_0.48	0.998
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	0.98
τ₂	0.962
τ_2.2	0.921
τ_2.4	0.89

Poisson coef.: 0.223
Rigidity: 234 Pa*10⁸
Young module: 571 Pa*10⁸
Knoop hardness: 420
Abrasion: 140

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	86
100 ~ 300	97

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.1
-20 ~ 0	t	2.3
0 ~ 20	t	2.5
20 ~ 40	t	2.5
40 ~ 60	t	2.7
60 ~ 80	t	2.9
-40 ~ -20	C'	2.9
-20 ~ 0	C'	3.1
0 ~ 20	C'	3.3
20 ~ 40	C'	3.4
40 ~ 60	C'	3.6
60 ~ 80	C'	3.8
-40 ~ -20		3
-20 ~ 0		3.1
0 ~ 20		3.3
20 ~ 40		3.5
40 ~ 60		3.7
60 ~ 80		3.8
-40 ~ -20	D	3.3
-20 ~ 0	D	3.5
0 ~ 20	D	3.6
20 ~ 40	D	3.8
40 ~ 60	D	4
60 ~ 80	D	4.2
-40 ~ -20	e	3.6
-20 ~ 0	e	3.8
0 ~ 20	e	4
20 ~ 40	e	4.2
40 ~ 60	e	4.4
60 ~ 80	e	4.6
-40 ~ -20	F	4.4
-20 ~ 0	F	4.6
0 ~ 20	F	4.8
20 ~ 40	F	5.1
40 ~ 60	F	5.3
60 ~ 80	F	5.5
-40 ~ -20	g	5.3
-20 ~ 0	g	5.5
0 ~ 20	g	5.8
20 ~ 40	g	6
40 ~ 60	g	6.3
60 ~ 80	g	6.6
-40 ~ -20	i	8.2
-20 ~ 0	i	8.6
0 ~ 20	i	8.9
20 ~ 40	i	9.3
40 ~ 60	i	9.6
60 ~ 80	i	10