BSM51Y - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.603109 n_e = 1.605481	V_d = 60.65 V_e = 60.40	n_F - n_C = 0.009943 n_F' - n_C' = 0.010023	Coloring: 0.29 - 0.32 mkm.

Type: Sellmeier
Spectral range: 0.326 - 2.325 mkm.
C1 = 1.22393171 C2 = 0.306482383 C3 = 0.823950901 C4 = 0.00649521083 C5 = 0.0208194161 C6 = 79.5168951

Refraction index
n _2.3254	-----
n _1.9701	1.578555
n _1.5296	1.584801
n _1.06	1.591071
n _t	1.591771
n _s	1.594652
n _r	1.598337
n _C	1.600073
n _C'	1.600557
n _0.6328	1.601009
n _D	1.603020
n _d	1.603109
n _e	1.605481
n _F	1.610017
n _F'	1.610581
n _g	1.615394
n _h	1.619849
n _i	1.627426
n _0.3341	1.635587
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8348
P_C,A'	0.3508
P_d,C	0.3052
P_e,C	0.5438
P_g,d	1.2355
P_g,F	0.5407
P_h,g	0.4479
P_i,g	1.2099
P_C',t	0.8835
P_e,C'	0.4951
P_F',e	0.5129
P_i,F'	1.6939

transmittance: 10 mm
τ_0.29	0.03
τ_0.3	0.33
τ_0.31	0.69
τ_0.32	0.88
τ_0.33	0.95
τ_0.34	0.977
τ_0.35	0.988
τ_0.36	0.993
τ_0.365	0.995
τ_0.37	0.996
τ_0.38	0.997
τ_0.39	0.998
τ_0.4	0.998
τ_0.42	0.998
τ_0.44	0.998
τ_0.46	0.999
τ_0.48	0.999
τ_0.5	0.999
τ_0.55	0.999
τ_0.6	0.999
τ_0.65	0.999
τ_0.7	0.999
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.997
τ_1.2	0.997
τ_1.4	0.985
τ_1.6	0.992
τ_1.8	0.983
τ₂	0.967
τ_2.2	0.89
τ_2.4	0.78

Poisson coef.: 0.256
Rigidity: 359 Pa*10⁸
Young module: 901 Pa*10⁸
Knoop hardness: 570
Abrasion: 117

Climatic resistance: 3
Resistance to acids: 51.2
Phosphate resistance: 2.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	63
100 ~ 300	77

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.5
-20 ~ 0	t	2.6
0 ~ 20	t	2.6
20 ~ 40	t	2.6
40 ~ 60	t	2.7
60 ~ 80	t	2.7
-40 ~ -20	C'	2.8
-20 ~ 0	C'	2.9
0 ~ 20	C'	2.9
20 ~ 40	C'	3
40 ~ 60	C'	3
60 ~ 80	C'	3.1
-40 ~ -20		2.8
-20 ~ 0		2.9
0 ~ 20		2.9
20 ~ 40		3
40 ~ 60		3
60 ~ 80		3.1
-40 ~ -20	D	2.9
-20 ~ 0	D	3
0 ~ 20	D	3.1
20 ~ 40	D	3.1
40 ~ 60	D	3.2
60 ~ 80	D	3.3
-40 ~ -20	e	3.1
-20 ~ 0	e	3.1
0 ~ 20	e	3.2
20 ~ 40	e	3.3
40 ~ 60	e	3.3
60 ~ 80	e	3.4
-40 ~ -20	F	3.3
-20 ~ 0	F	3.4
0 ~ 20	F	3.5
20 ~ 40	F	3.6
40 ~ 60	F	3.6
60 ~ 80	F	3.7
-40 ~ -20	g	3.6
-20 ~ 0	g	3.7
0 ~ 20	g	3.8
20 ~ 40	g	3.9
40 ~ 60	g	4
60 ~ 80	g	4.1
-40 ~ -20	i	4.3
-20 ~ 0	i	4.4
0 ~ 20	i	4.6
20 ~ 40	i	4.7
40 ~ 60	i	4.8
60 ~ 80	i	4.9