PBL26 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.567321 n_e = 1.570466	V_d = 42.83 V_e = 42.55	n_F - n_C = 0.013245 n_F' - n_C' = 0.013406	Coloring: 0.31 - 0.34 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.23494993 C2 = 0.169136142 C3 = 1.09067013 C4 = 0.00862847509 C5 = 0.0422686058 C6 = 132.796906

Refraction index
n _2.3254	-----
n _1.9701	1.541383
n _1.5296	1.546676
n _1.06	1.552722
n _t	1.553473
n _s	1.556726
n _r	1.561198
n _C	1.563390
n _C'	1.564009
n _0.6328	1.564590
n _D	1.567205
n _d	1.567321
n _e	1.570466
n _F	1.576635
n _F'	1.577416
n _g	1.584202
n _h	1.590687
n _i	1.602215
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7487
P_C,A'	0.3287
P_d,C	0.2968
P_e,C	0.5342
P_g,d	1.2744
P_g,F	0.5713
P_h,g	0.4895
P_i,g	1.3599
P_C',t	0.7954
P_e,C'	0.4874
P_F',e	0.5247
P_i,F'	1.8723

transmittance: 10 mm
τ_0.31	0.05
τ_0.32	0.4
τ_0.33	0.76
τ_0.34	0.917
τ_0.35	0.966
τ_0.36	0.983
τ_0.37	0.99
τ_0.38	0.992
τ_0.39	0.995
τ_0.4	0.996
τ_0.42	0.997
τ_0.44	0.997
τ_0.46	0.997
τ_0.48	0.998
τ_0.5	0.998
τ_0.55	0.999
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.999
τ_0.8	0.999
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.996
τ_1.6	0.994
τ_1.8	0.982
τ₂	0.958
τ_2.2	0.918
τ_2.4	0.88

Poisson coef.: 0.22
Rigidity: 244 Pa*10⁸
Young module: 595 Pa*10⁸
Knoop hardness: 420
Abrasion: 135

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	89
100 ~ 300	104

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1
-20 ~ 0	t	1.1
0 ~ 20	t	1.2
20 ~ 40	t	1.3
40 ~ 60	t	1.4
60 ~ 80	t	1.5
-40 ~ -20	C'	1.5
-20 ~ 0	C'	1.6
0 ~ 20	C'	1.7
20 ~ 40	C'	1.8
40 ~ 60	C'	1.9
60 ~ 80	C'	2
-40 ~ -20		1.5
-20 ~ 0		1.6
0 ~ 20		1.7
20 ~ 40		1.9
40 ~ 60		2
60 ~ 80		2.1
-40 ~ -20	D	1.7
-20 ~ 0	D	1.8
0 ~ 20	D	1.9
20 ~ 40	D	2.1
40 ~ 60	D	2.2
60 ~ 80	D	2.3
-40 ~ -20	e	1.9
-20 ~ 0	e	2.1
0 ~ 20	e	2.2
20 ~ 40	e	2.3
40 ~ 60	e	2.5
60 ~ 80	e	2.6
-40 ~ -20	F	2.5
-20 ~ 0	F	2.6
0 ~ 20	F	2.8
20 ~ 40	F	2.9
40 ~ 60	F	3.1
60 ~ 80	F	3.2
-40 ~ -20	g	3
-20 ~ 0	g	3.2
0 ~ 20	g	3.4
20 ~ 40	g	3.6
40 ~ 60	g	3.8
60 ~ 80	g	3.9