PBM 8 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.595508 n_e = 1.599110	V_d = 39.21 V_e = 38.94	n_F - n_C = 0.015186 n_F' - n_C' = 0.015383	Coloring: 0.32 - 0.35 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.4842899 C2 = -0.0082629825 C3 = 0.020412922 C4 = 0.00059654654 C5 = -0.0000049991757 C6 = 0.0000028060192

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.579940
n _s	1.583518
n _r	1.588539
n _C	1.591025
n _C'	1.591729
n _0.6328	1.592391
n _D	1.595375
n _d	1.595508
n _e	1.599110
n _F	1.606211
n _F'	1.607113
n _g	1.614974
n _h	1.622532
n _i	1.636091
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7299
P_C,A'	0.3242
P_d,C	0.2952
P_e,C	0.5324
P_g,d	1.2818
P_g,F	0.5770
P_h,g	0.4976
P_i,g	1.3904
P_C',t	0.7763
P_e,C'	0.4860
P_F',e	0.5269
P_i,F'	1.9081

transmittance: 10 mm
τ_0.35	0.924
τ_0.36	0.963
τ_0.37	0.979
τ_0.38	0.984
τ_0.39	0.991
τ_0.4	0.995
τ_0.42	0.996
τ_0.44	0.996
τ_0.46	0.997
τ_0.48	0.997
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.998

Poisson coef.: 0.222
Rigidity: 241 Pa*10⁸
Young module: 588 Pa*10⁸
Knoop hardness: 400
Abrasion: 151

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	85
100 ~ 300	96

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	2
-20 ~ 0	C'	2.6
0 ~ 20	C'	2.6
20 ~ 40	C'	2.7
40 ~ 60	C'	2.9
60 ~ 80	C'	3.3
-40 ~ -20	D	2.2
-20 ~ 0	D	2.9
0 ~ 20	D	2.9
20 ~ 40	D	3
40 ~ 60	D	3.2
60 ~ 80	D	3.6
-40 ~ -20	e	2.5
-20 ~ 0	e	3.2
0 ~ 20	e	3.2
20 ~ 40	e	3.3
40 ~ 60	e	3.5
60 ~ 80	e	3.9
-40 ~ -20	F	3.2
-20 ~ 0	F	3.9
0 ~ 20	F	3.9
20 ~ 40	F	4
40 ~ 60	F	4.2
60 ~ 80	F	4.8
-40 ~ -20	g	3.8
-20 ~ 0	g	4.7
0 ~ 20	g	4.7
20 ~ 40	g	4.8
40 ~ 60	g	5.1
60 ~ 80	g	5.6