PBM35 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.698947 n_e = 1.704432	V_d = 30.12 V_e = 29.88	n_F - n_C = 0.023204 n_F' - n_C' = 0.023570	Coloring: 0.37 - 0.40 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 2.7934634 C2 = -0.011916323 C3 = 0.027252732 C4 = 0.0026477261 C5 = -0.00022721609 C6 = 0.000020411942

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.676314
n _s	1.681322
n _r	1.688561
n _C	1.692226
n _C'	1.693273
n _0.6328	1.694259
n _D	1.698745
n _d	1.698947
n _e	1.704432
n _F	1.715430
n _F'	1.716843
n _g	1.729329
n _h	1.741646
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6857
P_C,A'	0.3107
P_d,C	0.2896
P_e,C	0.5260
P_g,d	1.3093
P_g,F	0.5989
P_h,g	0.5308
P_i,g	-----
P_C',t	0.7308
P_e,C'	0.4808
P_F',e	0.5348
P_i,F'	-----

transmittance: 10 mm
τ_0.42	0.969
τ_0.44	0.985
τ_0.46	0.991
τ_0.48	0.994
τ_0.5	0.995
τ_0.55	0.997
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.998

Poisson coef.: 0.23
Rigidity: 242 Pa*10⁸
Young module: 595 Pa*10⁸
Knoop hardness: 420
Abrasion: 176

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	74
100 ~ 300	82

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	4.4
-20 ~ 0	t	4.7
0 ~ 20	t	4.8
20 ~ 40	t	5
40 ~ 60	t	5.4
60 ~ 80	t	5.6
-40 ~ -20	C'	5.4
-20 ~ 0	C'	5.6
0 ~ 20	C'	5.7
20 ~ 40	C'	5.9
40 ~ 60	C'	6.2
60 ~ 80	C'	6.5
-40 ~ -20		5.5
-20 ~ 0		5.7
0 ~ 20		5.8
20 ~ 40		6
40 ~ 60		6.3
60 ~ 80		6.6
-40 ~ -20	D	5.9
-20 ~ 0	D	6.1
0 ~ 20	D	6.2
20 ~ 40	D	6.4
40 ~ 60	D	6.7
60 ~ 80	D	7
-40 ~ -20	e	6.3
-20 ~ 0	e	6.5
0 ~ 20	e	6.7
20 ~ 40	e	7
40 ~ 60	e	7.3
60 ~ 80	e	7.7
-40 ~ -20	F	7.6
-20 ~ 0	F	7.7
0 ~ 20	F	8
20 ~ 40	F	8.3
40 ~ 60	F	8.6
60 ~ 80	F	9
-40 ~ -20	g	9.1
-20 ~ 0	g	9.3
0 ~ 20	g	9.7
20 ~ 40	g	10
40 ~ 60	g	10.5
60 ~ 80	g	10.8