BAH22 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.664459 n_e = 1.668855	V_d = 35.81 V_e = 35.55	n_F - n_C = 0.018553 n_F' - n_C' = 0.018814	Coloring: 0.33 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6928266 C2 = -0.0090141372 C3 = 0.025058968 C4 = 0.0010140502 C5 = -0.000032164637 C6 = 0.0000056431441

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.645863
n _s	1.650046
n _r	1.656028
n _C	1.659022
n _C'	1.659873
n _0.6328	1.660674
n _D	1.664297
n _d	1.664459
n _e	1.668855
n _F	1.677576
n _F'	1.678687
n _g	1.688426
n _h	1.697859
n _i	1.714974
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7092
P_C,A'	0.3186
P_d,C	0.2930
P_e,C	0.5299
P_g,d	1.2917
P_g,F	0.5848
P_h,g	0.5084
P_i,g	1.4308
P_C',t	0.7551
P_e,C'	0.4840
P_F',e	0.5299
P_i,F'	1.9557

transmittance: 10 mm
τ_0.38	0.9
τ_0.39	0.929
τ_0.4	0.951
τ_0.42	0.972
τ_0.44	0.981
τ_0.46	0.988
τ_0.48	0.992
τ_0.5	0.995
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998

Poisson coef.: 0.241
Rigidity: 259 Pa*10⁸
Young module: 643 Pa*10⁸
Knoop hardness: 440
Abrasion: 199

Climatic resistance: 1
Resistance to acids: 3.2
Phosphate resistance: 2.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	85
100 ~ 300	94

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2
-20 ~ 0	t	2.2
0 ~ 20	t	2.2
20 ~ 40	t	2.5
40 ~ 60	t	2.7
60 ~ 80	t	2.9
-40 ~ -20	C'	2.9
-20 ~ 0	C'	3.1
0 ~ 20	C'	3.3
20 ~ 40	C'	3.6
40 ~ 60	C'	3.9
60 ~ 80	C'	4.2
-40 ~ -20		2.9
-20 ~ 0		3.1
0 ~ 20		3.4
20 ~ 40		3.7
40 ~ 60		4
60 ~ 80		4.3
-40 ~ -20	D	3.2
-20 ~ 0	D	3.4
0 ~ 20	D	3.7
20 ~ 40	D	4
40 ~ 60	D	4.3
60 ~ 80	D	4.7
-40 ~ -20	e	3.6
-20 ~ 0	e	3.8
0 ~ 20	e	4.1
20 ~ 40	e	4.4
40 ~ 60	e	4.8
60 ~ 80	e	5.2
-40 ~ -20	F	4.5
-20 ~ 0	F	4.7
0 ~ 20	F	5.1
20 ~ 40	F	5.4
40 ~ 60	F	5.8
60 ~ 80	F	6.3
-40 ~ -20	g	5.5
-20 ~ 0	g	5.7
0 ~ 20	g	6.1
20 ~ 40	g	6.5
40 ~ 60	g	7
60 ~ 80	g	7.4