PBM27 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.639799 n_e = 1.644193	V_d = 34.47 V_e = 34.22	n_F - n_C = 0.018557 n_F' - n_C' = 0.018822	Coloring: 0.33 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6124109 C2 = -0.0087316589 C3 = 0.024857782 C4 = 0.00088778616 C5 = -0.0000092640255 C6 = 0.0000045028723

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.621248
n _s	1.625417
n _r	1.631383
n _C	1.634370
n _C'	1.635220
n _0.6328	1.636019
n _D	1.639637
n _d	1.639799
n _e	1.644193
n _F	1.652927
n _F'	1.654043
n _g	1.663829
n _h	1.673335
n _i	1.690621
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7071
P_C,A'	0.3178
P_d,C	0.2925
P_e,C	0.5293
P_g,d	1.2949
P_g,F	0.5874
P_h,g	0.5122
P_i,g	1.4437
P_C',t	0.7529
P_e,C'	0.4835
P_F',e	0.5307
P_i,F'	1.9711

transmittance: 10 mm
τ_0.37	0.945
τ_0.38	0.966
τ_0.39	0.981
τ_0.4	0.99
τ_0.42	0.994
τ_0.44	0.995
τ_0.46	0.996
τ_0.48	0.997
τ_0.5	0.998
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.999

Poisson coef.: 0.228
Rigidity: 221 Pa*10⁸
Young module: 542 Pa*10⁸
Knoop hardness: 400
Abrasion: 174

Climatic resistance: 2
Resistance to acids: 1
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	C'	3.2
-20 ~ 0	C'	3.2
0 ~ 20	C'	3.3
20 ~ 40	C'	3.5
40 ~ 60	C'	3.7
60 ~ 80	C'	3.8
-40 ~ -20	D	3.6
-20 ~ 0	D	3.6
0 ~ 20	D	3.8
20 ~ 40	D	3.9
40 ~ 60	D	4.1
60 ~ 80	D	4.2
-40 ~ -20	e	4
-20 ~ 0	e	4
0 ~ 20	e	4.2
20 ~ 40	e	4.3
40 ~ 60	e	4.5
60 ~ 80	e	4.7
-40 ~ -20	F	4.9
-20 ~ 0	F	4.9
0 ~ 20	F	5.2
20 ~ 40	F	5.4
40 ~ 60	F	5.6
60 ~ 80	F	5.9
-40 ~ -20	g	6
-20 ~ 0	g	6.1
0 ~ 20	g	6.3
20 ~ 40	g	6.5
40 ~ 60	g	6.7
60 ~ 80	g	7.1