PBH72 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.915356 n_e = 1.925521	V_d = 21.17 V_e = 21.00	n_F - n_C = 0.043234 n_F' - n_C' = 0.044060	Coloring: 0.39 - 0.45 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 3.4684938 C2 = -0.010731638 C3 = 0.058252246 C4 = 0.0046536748 C5 = -0.0003034305 C6 = 0.000048216298

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.875708
n _s	1.883915
n _r	1.896536
n _C	1.903106
n _C'	1.904999
n _0.6328	1.906787
n _D	1.914985
n _d	1.915356
n _e	1.925521
n _F	1.946341
n _F'	1.949059
n _g	1.973541
n _h	1.998499
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6337
P_C,A'	0.2966
P_d,C	0.2833
P_e,C	0.5184
P_g,d	1.3457
P_g,F	0.6291
P_h,g	0.5772
P_i,g	-----
P_C',t	0.6774
P_e,C'	0.4746
P_F',e	0.5444
P_i,F'	-----

transmittance: 10 mm
τ_0.48	0.927
τ_0.5	0.964
τ_0.55	0.993
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.999

Poisson coef.: 0.264
Rigidity: 207 Pa*10⁸
Young module: 524 Pa*10⁸
Knoop hardness: 290
Abrasion: 324

Climatic resistance: 3
Resistance to acids: 53.4
Phosphate resistance: 4.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	88
100 ~ 300	96

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	8.6
-20 ~ 0	t	8.9
0 ~ 20	t	9.4
20 ~ 40	t	9.9
40 ~ 60	t	10.3
60 ~ 80	t	10.9
-40 ~ -20	C'	11.8
-20 ~ 0	C'	12.3
0 ~ 20	C'	12.8
20 ~ 40	C'	13.4
40 ~ 60	C'	14
60 ~ 80	C'	14.6
-40 ~ -20		12.1
-20 ~ 0		12.5
0 ~ 20		13.1
20 ~ 40		13.7
40 ~ 60		14.3
60 ~ 80		15
-40 ~ -20	D	13.2
-20 ~ 0	D	13.6
0 ~ 20	D	14.2
20 ~ 40	D	14.9
40 ~ 60	D	15.5
60 ~ 80	D	16.2
-40 ~ -20	e	14.6
-20 ~ 0	e	15.2
0 ~ 20	e	15.8
20 ~ 40	e	16.5
40 ~ 60	e	17.2
60 ~ 80	e	18
-40 ~ -20	F	18.4
-20 ~ 0	F	19.1
0 ~ 20	F	19.8
20 ~ 40	F	20.6
40 ~ 60	F	21.5
60 ~ 80	F	22.4
-40 ~ -20	g	22.7
-20 ~ 0	g	23.7
0 ~ 20	g	24.7
20 ~ 40	g	25.8
40 ~ 60	g	26.9
60 ~ 80	g	28.1