BAL41 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.563838 n_e = 1.566054	V_d = 60.69 V_e = 60.44	n_F - n_C = 0.009289 n_F' - n_C' = 0.009364	Coloring: 0.30 - 0.35 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.4107417 C2 = -0.010237998 C3 = 0.01233414 C4 = 0.00037823785 C5 = -0.000025504482 C6 = 0.0000014563851

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.553237
n _s	1.555940
n _r	1.559383
n _C	1.561003
n _C'	1.561455
n _0.6328	1.561877
n _D	1.563755
n _d	1.563838
n _e	1.566054
n _F	1.570293
n _F'	1.570820
n _g	1.575312
n _h	1.579466
n _i	1.586536
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8359
P_C,A'	0.3505
P_d,C	0.3051
P_e,C	0.5437
P_g,d	1.2351
P_g,F	0.5403
P_h,g	0.4470
P_i,g	1.2081
P_C',t	0.8846
P_e,C'	0.4950
P_F',e	0.5129
P_i,F'	1.6917

transmittance: 10 mm
τ_0.35	0.907
τ_0.36	0.948
τ_0.37	0.97
τ_0.38	0.98
τ_0.39	0.987
τ_0.4	0.992
τ_0.42	0.993
τ_0.44	0.993
τ_0.46	0.995
τ_0.48	0.996
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.997

Poisson coef.: 0.241
Rigidity: 358 Pa*10⁸
Young module: 889 Pa*10⁸
Knoop hardness: 590
Abrasion: 129

Climatic resistance: 3
Resistance to acids: 51.2
Phosphate resistance: 3.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	78
100 ~ 300	91

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	2.4
-20 ~ 0	C'	2.4
0 ~ 20	C'	2.4
20 ~ 40	C'	2.4
40 ~ 60	C'	2.4
60 ~ 80	C'	2.4
-40 ~ -20	D	2.5
-20 ~ 0	D	2.5
0 ~ 20	D	2.5
20 ~ 40	D	2.5
40 ~ 60	D	2.5
60 ~ 80	D	2.5
-40 ~ -20	e	2.7
-20 ~ 0	e	2.7
0 ~ 20	e	2.7
20 ~ 40	e	2.7
40 ~ 60	e	2.7
60 ~ 80	e	2.7
-40 ~ -20	F	3
-20 ~ 0	F	3
0 ~ 20	F	3
20 ~ 40	F	3
40 ~ 60	F	3
60 ~ 80	F	3
-40 ~ -20	g	3.3
-20 ~ 0	g	3.3
0 ~ 20	g	3.3
20 ~ 40	g	3.3
40 ~ 60	g	3.3
60 ~ 80	g	3.3