PBM 9 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.620451 n_e = 1.624310	V_d = 38.11 V_e = 37.85	n_F - n_C = 0.016276 n_F' - n_C' = 0.016490	Coloring: 0.33 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5602323 C2 = -0.0095632018 C3 = 0.021495089 C4 = 0.00085071191 C5 = -0.000033535727 C6 = 0.0000048953255

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.603771
n _s	1.607618
n _r	1.612992
n _C	1.615651
n _C'	1.616405
n _0.6328	1.617113
n _D	1.620308
n _d	1.620451
n _e	1.624310
n _F	1.631927
n _F'	1.632895
n _g	1.641347
n _h	1.649495
n _i	1.664201
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7298
P_C,A'	0.3236
P_d,C	0.2948
P_e,C	0.5320
P_g,d	1.2838
P_g,F	0.5787
P_h,g	0.5006
P_i,g	1.4041
P_C',t	0.7761
P_e,C'	0.4856
P_F',e	0.5274
P_i,F'	1.9234

transmittance: 10 mm
τ_0.38	0.933
τ_0.39	0.961
τ_0.4	0.977
τ_0.42	0.988
τ_0.44	0.991
τ_0.46	0.993
τ_0.48	0.995
τ_0.5	0.996
τ_0.55	0.997
τ_0.6	0.997
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.998
τ_0.9	0.997

Poisson coef.: 0.223
Rigidity: 269 Pa*10⁸
Young module: 658 Pa*10⁸
Knoop hardness: 460
Abrasion: 147

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	80
100 ~ 300	93

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	4.1
-20 ~ 0	C'	4.2
0 ~ 20	C'	4.4
20 ~ 40	C'	4.6
40 ~ 60	C'	4.9
60 ~ 80	C'	5.2
-40 ~ -20	D	4.4
-20 ~ 0	D	4.5
0 ~ 20	D	4.7
20 ~ 40	D	5
40 ~ 60	D	5.3
60 ~ 80	D	5.6
-40 ~ -20	e	4.7
-20 ~ 0	e	4.8
0 ~ 20	e	5.1
20 ~ 40	e	5.3
40 ~ 60	e	5.6
60 ~ 80	e	6
-40 ~ -20	F	5.3
-20 ~ 0	F	5.5
0 ~ 20	F	5.8
20 ~ 40	F	6.2
40 ~ 60	F	6.6
60 ~ 80	F	7
-40 ~ -20	g	6.2
-20 ~ 0	g	6.4
0 ~ 20	g	6.7
20 ~ 40	g	7.1
40 ~ 60	g	7.5
60 ~ 80	g	7.9