BSM23 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.614839 n_e = 1.617698	V_d = 51.17 V_e = 50.87	n_F - n_C = 0.012015 n_F' - n_C' = 0.012142	Coloring: 0.34 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5600597 C2 = -0.0097457249 C3 = 0.015970594 C4 = 0.00066802115 C5 = -0.000044172822 C6 = 0.0000031024931

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.601925
n _s	1.605036
n _r	1.609212
n _C	1.611236
n _C'	1.611805
n _0.6328	1.612339
n _D	1.614732
n _d	1.614839
n _e	1.617698
n _F	1.623251
n _F'	1.623948
n _g	1.629950
n _h	1.635593
n _i	1.645426
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7748
P_C,A'	0.3356
P_d,C	0.2998
P_e,C	0.5378
P_g,d	1.2576
P_g,F	0.5575
P_h,g	0.4696
P_i,g	1.2880
P_C',t	0.8222
P_e,C'	0.4904
P_F',e	0.5201
P_i,F'	1.7876

transmittance: 10 mm
τ_0.39	0.93
τ_0.4	0.959
τ_0.42	0.978
τ_0.44	0.983
τ_0.46	0.987
τ_0.48	0.99
τ_0.5	0.993
τ_0.55	0.996
τ_0.6	0.995
τ_0.65	0.994
τ_0.7	0.995

Poisson coef.: 0.257
Rigidity: 313 Pa*10⁸
Young module: 788 Pa*10⁸
Knoop hardness: 500
Abrasion: 167

Climatic resistance: 2
Resistance to acids: 4.2
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	71
100 ~ 300	82

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	2.4
-20 ~ 0	C'	2.4
0 ~ 20	C'	2.5
20 ~ 40	C'	2.6
40 ~ 60	C'	2.8
60 ~ 80	C'	3
-40 ~ -20	D	2.6
-20 ~ 0	D	2.6
0 ~ 20	D	2.7
20 ~ 40	D	2.8
40 ~ 60	D	3
60 ~ 80	D	3.1
-40 ~ -20	e	2.8
-20 ~ 0	e	2.8
0 ~ 20	e	2.9
20 ~ 40	e	3
40 ~ 60	e	3.1
60 ~ 80	e	3.3
-40 ~ -20	F	3.3
-20 ~ 0	F	3.3
0 ~ 20	F	3.4
20 ~ 40	F	3.5
40 ~ 60	F	3.7
60 ~ 80	F	3.9
-40 ~ -20	g	3.6
-20 ~ 0	g	3.7
0 ~ 20	g	3.8
20 ~ 40	g	4
40 ~ 60	g	4.2
60 ~ 80	g	4.5