K-LaK6 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.642503 n_e = 1.645137	V_d = 58.11 V_e = 57.85	n_F - n_C = 0.011055 n_F' - n_C' = 0.011151	Coloring: 0.30 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6515563 C2 = -0.010678481 C3 = 0.01708672 C4 = -0.000092823421 C5 = 0.000060970481 C6 = -0.0000035490225

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.630080
n _s	1.633188
n _r	1.637228
n _C	1.639142
n _C'	1.639677
n _0.6328	1.640177
n _D	1.642404
n _d	1.642503
n _e	1.645137
n _F	1.650198
n _F'	1.650829
n _g	1.656224
n _h	1.661217
n _i	1.669630
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8197
P_C,A'	0.3474
P_d,C	0.3039
P_e,C	0.5422
P_g,d	1.2411
P_g,F	0.5450
P_h,g	0.4517
P_i,g	1.2126
P_C',t	0.8681
P_e,C'	0.4938
P_F',e	0.5147
P_i,F'	1.7006

transmittance: 10 mm
τ_0.3	0.086
τ_0.31	0.289
τ_0.32	0.51
τ_0.33	0.694
τ_0.34	0.812
τ_0.35	0.887
τ_0.36	0.932
τ_0.37	0.957
τ_0.38	0.971
τ_0.39	0.98
τ_0.4	0.982
τ_0.42	0.987
τ_0.44	0.987
τ_0.46	0.99
τ_0.48	0.994
τ_0.5	0.994
τ_0.55	0.994
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.997
τ₂	0.97

transmittance: 25 mm
τ_0.31	0.045
τ_0.32	0.186
τ_0.33	0.402
τ_0.34	0.595
τ_0.35	0.742
τ_0.36	0.838
τ_0.37	0.896
τ_0.38	0.93
τ_0.39	0.95
τ_0.4	0.957
τ_0.42	0.968
τ_0.44	0.968
τ_0.46	0.975
τ_0.48	0.985
τ_0.5	0.985
τ_0.55	0.985
τ_0.6	0.992
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.992
τ₂	0.92

Poisson coef.: 0.257
Rigidity: 345 Pa*10⁸
Young module: 868 Pa*10⁸
Knoop hardness: 498
Abrasion: 170

Climatic resistance: 2
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	79