PBH71 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.922863 n_e = 1.933056	V_d = 21.28 V_e = 21.12	n_F - n_C = 0.043349 n_F' - n_C' = 0.044172	Coloring: 0.38 - 0.41 mkm.

Type: Sellmeier
Spectral range: 0.4046561 - 2.325 mkm.
C1 = 1.97039844 C2 = 0.520330498 C3 = 1.30696186 C4 = 0.0155780448 C5 = 0.0632642123 C6 = 142.045097

Refraction index
n _2.3254	-----
n _1.9701	1.862948
n _1.5296	1.869895
n _1.06	1.881237
n _t	1.882984
n _s	1.891263
n _r	1.903972
n _C	1.910572
n _C'	1.912472
n _0.6328	1.914267
n _D	1.922492
n _d	1.922863
n _e	1.933056
n _F	1.953922
n _F'	1.956645
n _g	1.981122
n _h	2.005987
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6364
P_C,A'	0.2974
P_d,C	0.2835
P_e,C	0.5186
P_g,d	1.3439
P_g,F	0.6274
P_h,g	0.5735
P_i,g	-----
P_C',t	0.6802
P_e,C'	0.4748
P_F',e	0.5441
P_i,F'	-----

transmittance: 10 mm
τ_0.37	0.02
τ_0.38	0.23
τ_0.39	0.56
τ_0.4	0.77
τ_0.42	0.925
τ_0.44	0.962
τ_0.46	0.976
τ_0.48	0.985
τ_0.5	0.991
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.999
τ_0.7	0.999
τ_0.8	0.999
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.997
τ_1.4	0.995
τ_1.6	0.993
τ_1.8	0.985
τ₂	0.975
τ_2.2	0.953
τ_2.4	0.918

Poisson coef.: 0.264
Rigidity: 204 Pa*10⁸
Young module: 517 Pa*10⁸
Knoop hardness: 300
Abrasion: 445

Climatic resistance: 2
Resistance to acids: 53.4
Phosphate resistance: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	89
100 ~ 300	101

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	8
-20 ~ 0	t	8.3
0 ~ 20	t	8.6
20 ~ 40	t	8.9
40 ~ 60	t	9.1
60 ~ 80	t	9.5
-40 ~ -20	C'	10.5
-20 ~ 0	C'	10.9
0 ~ 20	C'	11.3
20 ~ 40	C'	11.7
40 ~ 60	C'	12.1
60 ~ 80	C'	12.5
-40 ~ -20		10.7
-20 ~ 0		11.1
0 ~ 20		11.5
20 ~ 40		11.9
40 ~ 60		12.3
60 ~ 80		12.7
-40 ~ -20	D	11.8
-20 ~ 0	D	12.2
0 ~ 20	D	12.6
20 ~ 40	D	13.1
40 ~ 60	D	13.5
60 ~ 80	D	13.9
-40 ~ -20	e	13.2
-20 ~ 0	e	13.7
0 ~ 20	e	14.2
20 ~ 40	e	14.7
40 ~ 60	e	15.2
60 ~ 80	e	15.7
-40 ~ -20	F	16.8
-20 ~ 0	F	17.4
0 ~ 20	F	18
20 ~ 40	F	18.7
40 ~ 60	F	19.3
60 ~ 80	F	19.9
-40 ~ -20	g	21.2
-20 ~ 0	g	21.9
0 ~ 20	g	22.7
20 ~ 40	g	23.5
40 ~ 60	g	24.3
60 ~ 80	g	25