PBM22 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.647688 n_e = 1.652225	V_d = 33.80 V_e = 33.55	n_F - n_C = 0.019160 n_F' - n_C' = 0.019438	Coloring: 0.33 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6360314 C2 = -0.0089450876 C3 = 0.025228056 C4 = 0.0011120943 C5 = -0.000037887387 C6 = 0.0000063760973

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.628617
n _s	1.632885
n _r	1.639014
n _C	1.642090
n _C'	1.642965
n _0.6328	1.643789
n _D	1.647521
n _d	1.647688
n _e	1.652225
n _F	1.661251
n _F'	1.662404
n _g	1.672524
n _h	1.682364
n _i	1.700308
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7031
P_C,A'	0.3167
P_d,C	0.2921
P_e,C	0.5289
P_g,d	1.2961
P_g,F	0.5883
P_h,g	0.5135
P_i,g	1.4500
P_C',t	0.7488
P_e,C'	0.4832
P_F',e	0.5312
P_i,F'	1.9782

transmittance: 10 mm
τ_0.37	0.928
τ_0.38	0.953
τ_0.39	0.969
τ_0.4	0.981
τ_0.42	0.989
τ_0.44	0.992
τ_0.46	0.994
τ_0.48	0.996
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998

Poisson coef.: 0.229
Rigidity: 230 Pa*10⁸
Young module: 565 Pa*10⁸
Knoop hardness: 400
Abrasion: 160

Climatic resistance: 2
Resistance to acids: 2.2
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	88
100 ~ 300	98

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.2
-20 ~ 0	t	2.3
0 ~ 20	t	2.4
20 ~ 40	t	2.8
40 ~ 60	t	3
60 ~ 80	t	3.4
-40 ~ -20	C'	3.2
-20 ~ 0	C'	3.4
0 ~ 20	C'	3.6
20 ~ 40	C'	4
40 ~ 60	C'	4.3
60 ~ 80	C'	4.7
-40 ~ -20		3.3
-20 ~ 0		3.5
0 ~ 20		3.7
20 ~ 40		4.1
40 ~ 60		4.4
60 ~ 80		4.8
-40 ~ -20	D	3.6
-20 ~ 0	D	3.8
0 ~ 20	D	4
20 ~ 40	D	4.4
40 ~ 60	D	4.8
60 ~ 80	D	5.2
-40 ~ -20	e	4
-20 ~ 0	e	4.2
0 ~ 20	e	4.5
20 ~ 40	e	4.8
40 ~ 60	e	5.2
60 ~ 80	e	5.6
-40 ~ -20	F	4.9
-20 ~ 0	F	5.2
0 ~ 20	F	5.5
20 ~ 40	F	5.9
40 ~ 60	F	6.4
60 ~ 80	F	6.8
-40 ~ -20	g	6
-20 ~ 0	g	6.3
0 ~ 20	g	6.7
20 ~ 40	g	7.1
40 ~ 60	g	7.6
60 ~ 80	g	8.1