K-LaKn9 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.677999 n_e = 1.681033	V_d = 53.25 V_e = 52.98	n_F - n_C = 0.012731 n_F' - n_C' = 0.012853	Coloring: 0.31 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.7611558 C2 = -0.010039822 C3 = 0.018826222 C4 = 0.00046012572 C5 = -0.000021153952 C6 = 0.0000016013372

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.664199
n _s	1.667518
n _r	1.671993
n _C	1.674158
n _C'	1.674766
n _0.6328	1.675336
n _D	1.677886
n _d	1.677999
n _e	1.681033
n _F	1.686889
n _F'	1.687620
n _g	1.693887
n _h	1.699721
n _i	1.709729
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7822
P_C,A'	0.3391
P_d,C	0.3017
P_e,C	0.5400
P_g,d	1.2480
P_g,F	0.5497
P_h,g	0.4582
P_i,g	1.2443
P_C',t	0.8300
P_e,C'	0.4922
P_F',e	0.5173
P_i,F'	1.7366

transmittance: 10 mm
τ_0.31	0.023
τ_0.32	0.15
τ_0.33	0.369
τ_0.34	0.592
τ_0.35	0.755
τ_0.36	0.858
τ_0.37	0.92
τ_0.38	0.957
τ_0.39	0.971
τ_0.4	0.981
τ_0.42	0.99
τ_0.44	0.991
τ_0.46	0.992
τ_0.48	0.994
τ_0.5	0.997
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	0.994
τ_1.5	0.991
τ₂	0.963

transmittance: 25 mm
τ_0.33	0.082
τ_0.34	0.269
τ_0.35	0.496
τ_0.36	0.683
τ_0.37	0.813
τ_0.38	0.896
τ_0.39	0.93
τ_0.4	0.954
τ_0.42	0.975
τ_0.44	0.978
τ_0.46	0.982
τ_0.48	0.985
τ_0.5	0.992
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	0.985
τ_1.5	0.978
τ₂	0.91

Poisson coef.: 0.287
Rigidity: 342 Pa*10⁸
Young module: 880 Pa*10⁸
Knoop hardness: 548
Abrasion: 160

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	88