BAM25 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.603229 n_e = 1.606613	V_d = 42.32 V_e = 42.02	n_F - n_C = 0.014253 n_F' - n_C' = 0.014432	Coloring: 0.32 - 0.35 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5134818 C2 = -0.0087396385 C3 = 0.018681902 C4 = 0.00074708919 C5 = -0.000030475955 C6 = 0.0000033990399

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.588505
n _s	1.591921
n _r	1.596669
n _C	1.599011
n _C'	1.599675
n _0.6328	1.600297
n _D	1.603104
n _d	1.603229
n _e	1.606613
n _F	1.613265
n _F'	1.614108
n _g	1.621432
n _h	1.628431
n _i	1.640890
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7371
P_C,A'	0.3258
P_d,C	0.2959
P_e,C	0.5333
P_g,d	1.2770
P_g,F	0.5729
P_h,g	0.4910
P_i,g	1.3651
P_C',t	0.7836
P_e,C'	0.4867
P_F',e	0.5257
P_i,F'	1.8789

transmittance: 10 mm
τ_0.36	0.934
τ_0.37	0.962
τ_0.38	0.973
τ_0.39	0.985
τ_0.4	0.991
τ_0.42	0.994
τ_0.44	0.994
τ_0.46	0.996
τ_0.48	0.996
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	0.998
τ_0.9	0.997

Poisson coef.: 0.235
Rigidity: 258 Pa*10⁸
Young module: 637 Pa*10⁸
Knoop hardness: 460
Abrasion: 163

Climatic resistance: 2
Resistance to acids: 2.2
Phosphate resistance: 1.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	84
100 ~ 300	95

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.9
-20 ~ 0	t	2
0 ~ 20	t	2
20 ~ 40	t	2.1
40 ~ 60	t	2.2
60 ~ 80	t	2.5
-40 ~ -20	C'	2.6
-20 ~ 0	C'	2.6
0 ~ 20	C'	2.7
20 ~ 40	C'	2.7
40 ~ 60	C'	2.9
60 ~ 80	C'	3
-40 ~ -20		2.7
-20 ~ 0		2.7
0 ~ 20		2.8
20 ~ 40		2.8
40 ~ 60		2.9
60 ~ 80		3.1
-40 ~ -20	D	3
-20 ~ 0	D	3
0 ~ 20	D	3
20 ~ 40	D	3.1
40 ~ 60	D	3.2
60 ~ 80	D	3.4
-40 ~ -20	e	3.1
-20 ~ 0	e	3.1
0 ~ 20	e	3.2
20 ~ 40	e	3.3
40 ~ 60	e	3.4
60 ~ 80	e	3.5
-40 ~ -20	F	3.7
-20 ~ 0	F	3.7
0 ~ 20	F	3.8
20 ~ 40	F	4
40 ~ 60	F	4.2
60 ~ 80	F	4.4
-40 ~ -20	g	4.5
-20 ~ 0	g	4.5
0 ~ 20	g	4.6
20 ~ 40	g	4.7
40 ~ 60	g	4.9
60 ~ 80	g	5.1