K-LaK18 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.729163 n_e = 1.732343	V_d = 54.67 V_e = 54.45	n_F - n_C = 0.013336 n_F' - n_C' = 0.013448	Coloring: 0.30 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.9326458 C2 = -0.014635981 C3 = 0.02078332 C4 = 0.0002217123 C5 = 0.000015404207 C6 = -0.00000030668905

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.714069
n _s	1.717877
n _r	1.722783
n _C	1.725101
n _C'	1.725749
n _0.6328	1.726353
n _D	1.729045
n _d	1.729163
n _e	1.732343
n _F	1.738438
n _F'	1.739198
n _g	1.745690
n _h	1.751720
n _i	1.762019
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8271
P_C,A'	0.3490
P_d,C	0.3045
P_e,C	0.5429
P_g,d	1.2391
P_g,F	0.5437
P_h,g	0.4520
P_i,g	1.2243
P_C',t	0.8757
P_e,C'	0.4944
P_F',e	0.5139
P_i,F'	1.7111

transmittance: 10 mm
τ_0.29	0.022
τ_0.3	0.058
τ_0.31	0.1
τ_0.32	0.246
τ_0.33	0.398
τ_0.34	0.554
τ_0.35	0.694
τ_0.36	0.799
τ_0.37	0.873
τ_0.38	0.922
τ_0.39	0.947
τ_0.4	0.965
τ_0.42	0.978
τ_0.44	0.982
τ_0.46	0.985
τ_0.48	0.988
τ_0.5	0.99
τ_0.55	0.991
τ_0.6	0.995
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.995
τ₂	0.954

transmittance: 25 mm
τ_0.31	0.003
τ_0.32	0.03
τ_0.33	0.1
τ_0.34	0.229
τ_0.35	0.402
τ_0.36	0.571
τ_0.37	0.714
τ_0.38	0.817
τ_0.39	0.874
τ_0.4	0.916
τ_0.42	0.947
τ_0.44	0.957
τ_0.46	0.964
τ_0.48	0.971
τ_0.5	0.975
τ_0.55	0.978
τ_0.6	0.989
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.989
τ₂	0.89

Poisson coef.: 0.275
Rigidity: 461 Pa*10⁸
Young module: 1175 Pa*10⁸
Knoop hardness: 600
Abrasion: 60

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	71