BSM15 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.622991 n_e = 1.625546	V_d = 58.14 V_e = 57.86	n_F - n_C = 0.010714 n_F' - n_C' = 0.010809	Coloring: 0.31 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5902495 C2 = -0.0098868581 C3 = 0.015656459 C4 = 0.00021175533 C5 = 0.0000057639445 C6 = -0.000000031345739

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.611061
n _s	1.614016
n _r	1.617892
n _C	1.619739
n _C'	1.620256
n _0.6328	1.620739
n _D	1.622896
n _d	1.622991
n _e	1.625546
n _F	1.630454
n _F'	1.631066
n _g	1.636300
n _h	1.641161
n _i	1.649456
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8099
P_C,A'	0.3453
P_d,C	0.3035
P_e,C	0.5419
P_g,d	1.2421
P_g,F	0.5456
P_h,g	0.4536
P_i,g	1.2278
P_C',t	0.8582
P_e,C'	0.4936
P_F',e	0.5151
P_i,F'	1.7163

transmittance: 10 mm
τ_0.36	0.921
τ_0.37	0.954
τ_0.38	0.972
τ_0.39	0.981
τ_0.4	0.988
τ_0.42	0.992
τ_0.44	0.993
τ_0.46	0.994
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.: 0.268
Rigidity: 330 Pa*10⁸
Young module: 837 Pa*10⁸
Knoop hardness: 540
Abrasion: 151

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	70
100 ~ 300	80

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	1.8
-20 ~ 0	C'	1.8
0 ~ 20	C'	1.8
20 ~ 40	C'	2
40 ~ 60	C'	2.2
60 ~ 80	C'	2.4
-40 ~ -20	D	2.1
-20 ~ 0	D	2
0 ~ 20	D	2
20 ~ 40	D	2.2
40 ~ 60	D	2.3
60 ~ 80	D	2.6
-40 ~ -20	e	2.2
-20 ~ 0	e	2.2
0 ~ 20	e	2.3
20 ~ 40	e	2.4
40 ~ 60	e	2.6
60 ~ 80	e	2.7
-40 ~ -20	F	2.5
-20 ~ 0	F	2.5
0 ~ 20	F	2.5
20 ~ 40	F	2.7
40 ~ 60	F	3
60 ~ 80	F	3.1
-40 ~ -20	g	2.9
-20 ~ 0	g	2.9
0 ~ 20	g	3.1
20 ~ 40	g	3.2
40 ~ 60	g	3.3
60 ~ 80	g	3.4