L-BSM15 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

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Main parameters
n_d = 1.622991 n_e = 1.625550	V_d = 58.03 V_e = 57.76	n_F - n_C = 0.010734 n_F' - n_C' = 0.010828	Coloring: 0.304 - 0.348 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5906124 C2 = -0.010401629 C3 = 0.015516243 C4 = 0.00024991384 C5 = 0.0000012517801 C6 = 0.00000010955256

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.610977
n _s	1.613972
n _r	1.617874
n _C	1.619729
n _C'	1.620248
n _0.6328	1.620733
n _D	1.622895
n _d	1.622991
n _e	1.625550
n _F	1.630464
n _F'	1.631077
n _g	1.636311
n _h	1.641165
n _i	1.649435
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8153
P_C,A'	0.3463
P_d,C	0.3038
P_e,C	0.5422
P_g,d	1.2408
P_g,F	0.5446
P_h,g	0.4522
P_i,g	1.2226
P_C',t	0.8637
P_e,C'	0.4939
P_F',e	0.5147
P_i,F'	1.7101

transmittance: 10 mm
τ_0.31	0.13
τ_0.32	0.4
τ_0.33	0.65
τ_0.34	0.81
τ_0.35	0.902
τ_0.36	0.947
τ_0.37	0.97
τ_0.38	0.982
τ_0.39	0.988
τ_0.4	0.992
τ_0.42	0.994
τ_0.44	0.994
τ_0.46	0.995
τ_0.48	0.996
τ_0.5	0.998
τ_0.55	0.999
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.999

Poisson coef.: 0.263
Rigidity: 355 Pa*10⁸
Young module: 898 Pa*10⁸
Knoop hardness: 570
Abrasion: 146

Climatic resistance: 3
Resistance to acids: 52
Phosphate resistance: 3.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	71
100 ~ 300	85