LaFn12 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.756897 n_e = 1.762545	V_d = 31.67 V_e = 31.42	n_F - n_C = 0.023899 n_F' - n_C' = 0.024267	Coloring: 0.38 - 0.44 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 2.9838547 C2 = -0.012191745 C3 = 0.032283756 C4 = 0.0017911052 C5 = -0.00010680885 C6 = 0.000015562547

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.733300
n _s	1.738573
n _r	1.746145
n _C	1.749952
n _C'	1.751036
n _0.6328	1.752057
n _D	1.756689
n _d	1.756897
n _e	1.762545
n _F	1.773851
n _F'	1.775303
n _g	1.788157
n _h	1.800870
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6967
P_C,A'	0.3140
P_d,C	0.2905
P_e,C	0.5269
P_g,d	1.3080
P_g,F	0.5986
P_h,g	0.5319
P_i,g	-----
P_C',t	0.7421
P_e,C'	0.4815
P_F',e	0.5338
P_i,F'	-----

transmittance: 10 mm
τ_0.38	0.042
τ_0.39	0.27
τ_0.4	0.564
τ_0.42	0.841
τ_0.44	0.925
τ_0.46	0.957
τ_0.48	0.971
τ_0.5	0.981
τ_0.55	0.99
τ_0.6	0.991
τ_0.65	0.994
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.982

transmittance: 25 mm
τ_0.39	0.037
τ_0.4	0.239
τ_0.42	0.649
τ_0.44	0.823
τ_0.46	0.896
τ_0.48	0.93
τ_0.5	0.954
τ_0.55	0.975
τ_0.6	0.978
τ_0.65	0.985
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.957

Poisson coef.: 0.267
Rigidity: 332 Pa*10⁸
Young module: 843 Pa*10⁸
Knoop hardness: 460
Abrasion: 200

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	86