BSM24 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.617646 n_e = 1.620319	V_d = 55.04 V_e = 54.76	n_F - n_C = 0.011219 n_F' - n_C' = 0.011326	Coloring: 0.32 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.56958 C2 = -0.0086466584 C3 = 0.016903144 C4 = 0.00007624944 C5 = 0.000026138532 C6 = -0.00000074670354

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.605373
n _s	1.608350
n _r	1.612336
n _C	1.614254
n _C'	1.614793
n _0.6328	1.615296
n _D	1.617546
n _d	1.617646
n _e	1.620319
n _F	1.625474
n _F'	1.626119
n _g	1.631648
n _h	1.636810
n _i	1.645682
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7915
P_C,A'	0.3415
P_d,C	0.3022
P_e,C	0.5405
P_g,d	1.2480
P_g,F	0.5502
P_h,g	0.4601
P_i,g	1.2508
P_C',t	0.8395
P_e,C'	0.4925
P_F',e	0.5169
P_i,F'	1.7436

transmittance: 10 mm
τ_0.38	0.934
τ_0.39	0.957
τ_0.4	0.975
τ_0.42	0.987
τ_0.44	0.989
τ_0.46	0.992
τ_0.48	0.994
τ_0.5	0.995
τ_0.55	0.997
τ_0.6	0.996
τ_0.65	0.995
τ_0.7	0.995
τ_0.8	0.994
τ_0.9	0.992

Poisson coef.: 0.266
Rigidity: 314 Pa*10⁸
Young module: 794 Pa*10⁸
Knoop hardness: 520
Abrasion: 141

Climatic resistance: 2
Resistance to acids: 51.2
Phosphate resistance: 2.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	65
100 ~ 300	76

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3
-20 ~ 0	t	3.1
0 ~ 20	t	3.2
20 ~ 40	t	3.4
40 ~ 60	t	3.6
60 ~ 80	t	3.9
-40 ~ -20	C'	3.6
-20 ~ 0	C'	3.7
0 ~ 20	C'	3.8
20 ~ 40	C'	4
40 ~ 60	C'	4.2
60 ~ 80	C'	4.4
-40 ~ -20		3.6
-20 ~ 0		3.7
0 ~ 20		3.8
20 ~ 40		4
40 ~ 60		4.3
60 ~ 80		4.5
-40 ~ -20	D	3.7
-20 ~ 0	D	3.8
0 ~ 20	D	3.9
20 ~ 40	D	4.1
40 ~ 60	D	4.4
60 ~ 80	D	4.7
-40 ~ -20	e	3.9
-20 ~ 0	e	4
0 ~ 20	e	4.1
20 ~ 40	e	4.3
40 ~ 60	e	4.6
60 ~ 80	e	4.8
-40 ~ -20	F	4.4
-20 ~ 0	F	4.4
0 ~ 20	F	4.6
20 ~ 40	F	4.7
40 ~ 60	F	4.9
60 ~ 80	F	5.2
-40 ~ -20	g	4.7
-20 ~ 0	g	4.8
0 ~ 20	g	5
20 ~ 40	g	5.2
40 ~ 60	g	5.4
60 ~ 80	g	5.7