BAH13 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.668921 n_e = 1.672453	V_d = 44.98 V_e = 44.68	n_F - n_C = 0.014869 n_F' - n_C' = 0.015047	Coloring: 0.35 - 0.39 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.7229077 C2 = -0.0099369888 C3 = 0.02092378 C4 = 0.00065136672 C5 = -0.000019388233 C6 = 0.0000031119561

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.653373
n _s	1.657017
n _r	1.662038
n _C	1.664502
n _C'	1.665198
n _0.6328	1.665851
n _D	1.668790
n _d	1.668921
n _e	1.672453
n _F	1.679371
n _F'	1.680246
n _g	1.687835
n _h	1.695071
n _i	1.707922
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7484
P_C,A'	0.3290
P_d,C	0.2971
P_e,C	0.5347
P_g,d	1.2720
P_g,F	0.5692
P_h,g	0.4866
P_i,g	1.3509
P_C',t	0.7953
P_e,C'	0.4878
P_F',e	0.5240
P_i,F'	1.8613

transmittance: 10 mm
τ_0.4	0.934
τ_0.42	0.97
τ_0.44	0.981
τ_0.46	0.986
τ_0.48	0.99
τ_0.5	0.994
τ_0.55	0.996
τ_0.6	0.996
τ_0.65	0.995
τ_0.7	0.996
τ_0.8	0.997
τ_0.9	0.996

Poisson coef.: 0.272
Rigidity: 307 Pa*10⁸
Young module: 782 Pa*10⁸
Knoop hardness: 500
Abrasion: 198

Climatic resistance: 3
Resistance to acids: 53.2
Phosphate resistance: 3.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	76
100 ~ 300	88

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.6
-20 ~ 0	t	1.6
0 ~ 20	t	1.6
20 ~ 40	t	1.8
40 ~ 60	t	1.9
60 ~ 80	t	2.1
-40 ~ -20	C'	2.3
-20 ~ 0	C'	2.3
0 ~ 20	C'	2.3
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		2.5
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	2.7
40 ~ 60	D	2.9
60 ~ 80	D	3.1
-40 ~ -20	e	2.7
-20 ~ 0	e	2.8
0 ~ 20	e	2.9
20 ~ 40	e	3
40 ~ 60	e	3.2
60 ~ 80	e	3.4
-40 ~ -20	F	3.3
-20 ~ 0	F	3.4
0 ~ 20	F	3.5
20 ~ 40	F	3.7
40 ~ 60	F	3.9
60 ~ 80	F	4.1
-40 ~ -20	g	3.9
-20 ~ 0	g	4
0 ~ 20	g	4.1
20 ~ 40	g	4.4
40 ~ 60	g	4.6
60 ~ 80	g	4.9