K-LaKn10 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.692000 n_e = 1.695256	V_d = 50.58 V_e = 50.30	n_F - n_C = 0.013679 n_F' - n_C' = 0.013821	Coloring: 0.33 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.8033541 C2 = -0.010283705 C3 = 0.02081166 C4 = 0.00027625601 C5 = 0.00001977524 C6 = -0.00000028127189

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.677290
n _s	1.680810
n _r	1.685579
n _C	1.687890
n _C'	1.688541
n _0.6328	1.689150
n _D	1.691879
n _d	1.692000
n _e	1.695256
n _F	1.701570
n _F'	1.702362
n _g	1.709177
n _h	1.715570
n _i	1.726619
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7749
P_C,A'	0.3368
P_d,C	0.3004
P_e,C	0.5384
P_g,d	1.2556
P_g,F	0.5561
P_h,g	0.4673
P_i,g	1.2750
P_C',t	0.8224
P_e,C'	0.4909
P_F',e	0.5194
P_i,F'	1.7732

transmittance: 10 mm
τ_0.33	0.05
τ_0.34	0.319
τ_0.35	0.637
τ_0.36	0.814
τ_0.37	0.909
τ_0.38	0.95
τ_0.39	0.968
τ_0.4	0.977
τ_0.42	0.982
τ_0.44	0.985
τ_0.46	0.988
τ_0.48	0.99
τ_0.5	0.99
τ_0.55	0.991
τ_0.6	0.992
τ_0.65	0.994
τ_0.7	0.995
τ_0.8	0.998
τ_1.06	0.985
τ_1.5	0.985
τ₂	0.964

transmittance: 25 mm
τ_0.34	0.057
τ_0.35	0.324
τ_0.36	0.598
τ_0.37	0.789
τ_0.38	0.88
τ_0.39	0.923
τ_0.4	0.944
τ_0.42	0.957
τ_0.44	0.964
τ_0.46	0.971
τ_0.48	0.975
τ_0.5	0.975
τ_0.55	0.978
τ_0.6	0.982
τ_0.65	0.985
τ_0.7	0.989
τ_0.8	0.996
τ_1.06	0.964
τ_1.5	0.964
τ₂	0.913

Poisson coef.: 0.291
Rigidity: 345 Pa*10⁸
Young module: 891 Pa*10⁸
Knoop hardness: 499
Abrasion: 180

Climatic resistance: 2
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	91