BAH11 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.666718 n_e = 1.669999	V_d = 48.31 V_e = 48.02	n_F - n_C = 0.013798 n_F' - n_C' = 0.013950	Coloring: 0.35 - 0.40 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.7175669 C2 = -0.0086662309 C3 = 0.02116288 C4 = 0.00015307681 C5 = 0.000032273092 C6 = 0.000000066022663

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.652093
n _s	1.655534
n _r	1.660274
n _C	1.662589
n _C'	1.663241
n _0.6328	1.663852
n _D	1.666596
n _d	1.666718
n _e	1.669999
n _F	1.676387
n _F'	1.677191
n _g	1.684142
n _h	1.690722
n _i	1.702271
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7605
P_C,A'	0.3336
P_d,C	0.2992
P_e,C	0.5370
P_g,d	1.2627
P_g,F	0.5619
P_h,g	0.4768
P_i,g	1.3138
P_C',t	0.8078
P_e,C'	0.4897
P_F',e	0.5212
P_i,F'	1.8175

transmittance: 10 mm
τ_0.4	0.935
τ_0.42	0.972
τ_0.44	0.981
τ_0.46	0.986
τ_0.48	0.99
τ_0.5	0.993
τ_0.55	0.997
τ_0.6	0.996
τ_0.65	0.995
τ_0.7	0.996
τ_0.8	0.998
τ_0.9	0.998

Poisson coef.: 0.277
Rigidity: 336 Pa*10⁸
Young module: 858 Pa*10⁸
Knoop hardness: 540
Abrasion: 175

Climatic resistance: 3
Resistance to acids: 52.2
Phosphate resistance: 3.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	74
100 ~ 300	85

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.7
-20 ~ 0	t	1.7
0 ~ 20	t	1.8
20 ~ 40	t	1.9
40 ~ 60	t	2
60 ~ 80	t	2.2
-40 ~ -20	C'	2.3
-20 ~ 0	C'	2.3
0 ~ 20	C'	2.4
20 ~ 40	C'	2.5
40 ~ 60	C'	2.6
60 ~ 80	C'	2.8
-40 ~ -20		2.3
-20 ~ 0		2.3
0 ~ 20		2.4
20 ~ 40		2.6
40 ~ 60		2.7
60 ~ 80		2.9
-40 ~ -20	D	2.5
-20 ~ 0	D	2.5
0 ~ 20	D	2.6
20 ~ 40	D	2.8
40 ~ 60	D	3
60 ~ 80	D	3.2
-40 ~ -20	e	2.7
-20 ~ 0	e	2.7
0 ~ 20	e	2.8
20 ~ 40	e	2.9
40 ~ 60	e	3.1
60 ~ 80	e	3.3
-40 ~ -20	F	3.2
-20 ~ 0	F	3.3
0 ~ 20	F	3.3
20 ~ 40	F	3.5
40 ~ 60	F	3.7
60 ~ 80	F	3.9
-40 ~ -20	g	3.7
-20 ~ 0	g	3.8
0 ~ 20	g	3.9
20 ~ 40	g	4.1
40 ~ 60	g	4.3
60 ~ 80	g	4.6