K-LaKn7 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.669998 n_e = 1.673082	V_d = 51.72 V_e = 51.45	n_F - n_C = 0.012952 n_F' - n_C' = 0.013080	Coloring: 0.34 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.7334938 C2 = -0.010297317 C3 = 0.019448887 C4 = 0.00029196609 C5 = 0.0000044649792 C6 = 0.00000085785598

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.655929
n _s	1.659328
n _r	1.663892
n _C	1.666094
n _C'	1.666713
n _0.6328	1.667292
n _D	1.669883
n _d	1.669998
n _e	1.673082
n _F	1.679046
n _F'	1.679794
n _g	1.686217
n _h	1.692241
n _i	1.702689
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7847
P_C,A'	0.3393
P_d,C	0.3013
P_e,C	0.5395
P_g,d	1.2522
P_g,F	0.5535
P_h,g	0.4650
P_i,g	1.2717
P_C',t	0.8325
P_e,C'	0.4917
P_F',e	0.5181
P_i,F'	1.7676

transmittance: 10 mm
τ_0.34	0.154
τ_0.35	0.505
τ_0.36	0.742
τ_0.37	0.867
τ_0.38	0.922
τ_0.39	0.948
τ_0.4	0.963
τ_0.42	0.974
τ_0.44	0.978
τ_0.46	0.982
τ_0.48	0.985
τ_0.5	0.988
τ_0.55	0.99
τ_0.6	0.992
τ_0.65	0.995
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.992
τ₂	0.964

transmittance: 25 mm
τ_0.35	0.181
τ_0.36	0.475
τ_0.37	0.7
τ_0.38	0.817
τ_0.39	0.877
τ_0.4	0.91
τ_0.42	0.937
τ_0.44	0.947
τ_0.46	0.957
τ_0.48	0.964
τ_0.5	0.971
τ_0.55	0.975
τ_0.6	0.982
τ_0.65	0.989
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.982
τ₂	0.913

Poisson coef.: 0.284
Rigidity: 357 Pa*10⁸
Young module: 916 Pa*10⁸
Knoop hardness: 546
Abrasion: 170

Climatic resistance: 1
Resistance to acids: 5

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