K-LaKn5 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.650000 n_e = 1.652772	V_d = 55.88 V_e = 55.61	n_F - n_C = 0.011630 n_F' - n_C' = 0.011736	Coloring: 0.33 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6750997 C2 = -0.011431427 C3 = 0.016688192 C4 = 0.00038837475 C5 = -0.000013937879 C6 = 0.0000012576508

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.637050
n _s	1.640270
n _r	1.644473
n _C	1.646474
n _C'	1.647035
n _0.6328	1.647559
n _D	1.649896
n _d	1.650000
n _e	1.652772
n _F	1.658105
n _F'	1.658771
n _g	1.664475
n _h	1.669791
n _i	1.678929
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8103
P_C,A'	0.3447
P_d,C	0.3031
P_e,C	0.5414
P_g,d	1.2445
P_g,F	0.5476
P_h,g	0.4569
P_i,g	1.2427
P_C',t	0.8584
P_e,C'	0.4932
P_F',e	0.5158
P_i,F'	1.7331

transmittance: 10 mm
τ_0.33	0.13
τ_0.34	0.436
τ_0.35	0.701
τ_0.36	0.846
τ_0.37	0.922
τ_0.38	0.96
τ_0.39	0.978
τ_0.4	0.988
τ_0.42	0.997
τ_0.44	0.997
τ_0.46	0.997
τ_0.48	0.998
τ_0.5	0.998
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.99
τ_1.5	0.985
τ₂	0.96

transmittance: 25 mm
τ_0.34	0.126
τ_0.35	0.411
τ_0.36	0.659
τ_0.37	0.817
τ_0.38	0.903
τ_0.39	0.947
τ_0.4	0.971
τ_0.42	0.992
τ_0.44	0.992
τ_0.46	0.992
τ_0.48	0.996
τ_0.5	0.996
τ_0.55	0.996
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.975
τ_1.5	0.964
τ₂	0.903

Poisson coef.: 0.278
Rigidity: 360 Pa*10⁸
Young module: 919 Pa*10⁸
Knoop hardness: 595
Abrasion: 140

Climatic resistance: 2
Resistance to acids: 5

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