PBL 2 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.540719 n_e = 1.543441	V_d = 47.23 V_e = 46.94	n_F - n_C = 0.011447 n_F' - n_C' = 0.011575	Coloring: 0.30 - 0.33 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.3302166 C2 = -0.0085474969 C3 = 0.014788612 C4 = 0.00048017066 C5 = -0.000019221577 C6 = 0.0000021710005

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.528479
n _s	1.531419
n _r	1.535377
n _C	1.537297
n _C'	1.537838
n _0.6328	1.538344
n _D	1.540618
n _d	1.540719
n _e	1.543441
n _F	1.548745
n _F'	1.549413
n _g	1.555190
n _h	1.560666
n _i	1.570313
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7702
P_C,A'	0.3341
P_d,C	0.2989
P_e,C	0.5366
P_g,d	1.2640
P_g,F	0.5630
P_h,g	0.4783
P_i,g	1.3210
P_C',t	0.8174
P_e,C'	0.4894
P_F',e	0.5216
P_i,F'	1.8257

transmittance: 10 mm
τ_0.34	0.947
τ_0.35	0.978
τ_0.36	0.988
τ_0.37	0.992
τ_0.38	0.993
τ_0.39	0.996
τ_0.4	0.997
τ_0.42	0.996
τ_0.44	0.996
τ_0.46	0.997
τ_0.48	0.997
τ_0.5	0.998
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998

Poisson coef.: 0.216
Rigidity: 254 Pa*10⁸
Young module: 617 Pa*10⁸
Knoop hardness: 420
Abrasion: 113

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	88
100 ~ 300	104