K-LaKn2 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.640503 n_e = 1.643041	V_d = 60.17 V_e = 59.93	n_F - n_C = 0.010643 n_F' - n_C' = 0.010728	Coloring: 0.30 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6499061 C2 = -0.013057055 C3 = 0.01478565 C4 = 0.0004068836 C5 = -0.00001903382 C6 = 0.0000010427952

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.628259
n _s	1.631414
n _r	1.635391
n _C	1.637253
n _C'	1.637771
n _0.6328	1.638256
n _D	1.640408
n _d	1.640503
n _e	1.643041
n _F	1.647896
n _F'	1.648500
n _g	1.653652
n _h	1.658419
n _i	1.666530
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8449
P_C,A'	0.3520
P_d,C	0.3053
P_e,C	0.5438
P_g,d	1.2353
P_g,F	0.5407
P_h,g	0.4478
P_i,g	1.2099
P_C',t	0.8937
P_e,C'	0.4951
P_F',e	0.5128
P_i,F'	1.6939

transmittance: 10 mm
τ_0.29	0.02
τ_0.3	0.086
τ_0.31	0.209
τ_0.32	0.371
τ_0.33	0.558
τ_0.34	0.708
τ_0.35	0.819
τ_0.36	0.887
τ_0.37	0.936
τ_0.38	0.957
τ_0.39	0.971
τ_0.4	0.98
τ_0.42	0.985
τ_0.44	0.988
τ_0.46	0.99
τ_0.48	0.99
τ_0.5	0.992
τ_0.55	0.994
τ_0.6	0.995
τ_0.65	0.997
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.971

transmittance: 25 mm
τ_0.31	0.02
τ_0.32	0.084
τ_0.33	0.232
τ_0.34	0.423
τ_0.35	0.608
τ_0.36	0.742
τ_0.37	0.848
τ_0.38	0.896
τ_0.39	0.93
τ_0.4	0.95
τ_0.42	0.964
τ_0.44	0.971
τ_0.46	0.975
τ_0.48	0.975
τ_0.5	0.982
τ_0.55	0.985
τ_0.6	0.989
τ_0.65	0.992
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.93

Poisson coef.: 0.278
Rigidity: 358 Pa*10⁸
Young module: 915 Pa*10⁸
Knoop hardness: 561
Abrasion: 130

Climatic resistance: 2
Resistance to acids: 5

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	80