PBH14 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.761818 n_e = 1.768586	V_d = 26.55 V_e = 26.34	n_F - n_C = 0.028689 n_F' - n_C' = 0.029179	Coloring: 0.38 - 0.43 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 2.9836628 C2 = -0.012013213 C3 = 0.035225183 C4 = 0.0031766736 C5 = -0.000253238 C6 = 0.000027797101

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.734465
n _s	1.740378
n _r	1.749112
n _C	1.753578
n _C'	1.754858
n _0.6328	1.756065
n _D	1.761571
n _d	1.761818
n _e	1.768586
n _F	1.782268
n _F'	1.784038
n _g	1.799796
n _h	1.815565
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6662
P_C,A'	0.3054
P_d,C	0.2872
P_e,C	0.5230
P_g,d	1.3237
P_g,F	0.6109
P_h,g	0.5496
P_i,g	-----
P_C',t	0.7108
P_e,C'	0.4784
P_F',e	0.5385
P_i,F'	-----

transmittance: 10 mm
τ_0.42	0.905
τ_0.44	0.962
τ_0.46	0.978
τ_0.48	0.986
τ_0.5	0.991
τ_0.55	0.996
τ_0.6	0.995
τ_0.65	0.995
τ_0.7	0.996

Poisson coef.: 0.237
Rigidity: 241 Pa*10⁸
Young module: 596 Pa*10⁸
Knoop hardness: 390
Abrasion: 185

Climatic resistance: 1
Resistance to acids: 1.2
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	71
100 ~ 300	82

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	5.5
-20 ~ 0	t	5.6
0 ~ 20	t	5.9
20 ~ 40	t	6.1
40 ~ 60	t	6.3
60 ~ 80	t	6.6
-40 ~ -20	C'	7.1
-20 ~ 0	C'	7.3
0 ~ 20	C'	7.6
20 ~ 40	C'	7.9
40 ~ 60	C'	8.3
60 ~ 80	C'	8.6
-40 ~ -20		7.3
-20 ~ 0		7.4
0 ~ 20		7.7
20 ~ 40		8.1
40 ~ 60		8.5
60 ~ 80		8.8
-40 ~ -20	D	7.8
-20 ~ 0	D	8
0 ~ 20	D	8.3
20 ~ 40	D	8.7
40 ~ 60	D	9.1
60 ~ 80	D	9.5
-40 ~ -20	e	8.5
-20 ~ 0	e	8.7
0 ~ 20	e	9
20 ~ 40	e	9.4
40 ~ 60	e	9.8
60 ~ 80	e	10.3
-40 ~ -20	F	10.2
-20 ~ 0	F	10.6
0 ~ 20	F	10.9
20 ~ 40	F	11.4
40 ~ 60	F	11.9
60 ~ 80	F	12.4
-40 ~ -20	g	12.3
-20 ~ 0	g	12.7
0 ~ 20	g	13.2
20 ~ 40	g	13.7
40 ~ 60	g	14.3
60 ~ 80	g	14.9