K-LaFn3 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.700006 n_e = 1.703476	V_d = 48.00 V_e = 47.71	n_F - n_C = 0.014582 n_F' - n_C' = 0.014742	Coloring: 0.34 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.8276713 C2 = -0.010513547 C3 = 0.020813388 C4 = 0.00079058417 C5 = -0.000050424719 C6 = 0.0000040193189

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.684580
n _s	1.688219
n _r	1.693207
n _C	1.695646
n _C'	1.696334
n _0.6328	1.696979
n _D	1.699877
n _d	1.700006
n _e	1.703476
n _F	1.710228
n _F'	1.711077
n _g	1.718396
n _h	1.725296
n _i	1.737370
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7588
P_C,A'	0.3325
P_d,C	0.2989
P_e,C	0.5369
P_g,d	1.2611
P_g,F	0.5601
P_h,g	0.4731
P_i,g	1.3011
P_C',t	0.8060
P_e,C'	0.4897
P_F',e	0.5212
P_i,F'	1.8030

transmittance: 10 mm
τ_0.34	0.114
τ_0.35	0.447
τ_0.36	0.727
τ_0.37	0.862
τ_0.38	0.929
τ_0.39	0.957
τ_0.4	0.971
τ_0.42	0.981
τ_0.44	0.984
τ_0.46	0.985
τ_0.48	0.988
τ_0.5	0.991
τ_0.55	0.992
τ_0.6	0.995
τ_0.65	0.995
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.981

transmittance: 25 mm
τ_0.35	0.134
τ_0.36	0.45
τ_0.37	0.691
τ_0.38	0.832
τ_0.39	0.896
τ_0.4	0.93
τ_0.42	0.954
τ_0.44	0.961
τ_0.46	0.964
τ_0.48	0.971
τ_0.5	0.978
τ_0.55	0.982
τ_0.6	0.989
τ_0.65	0.989
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.954

Poisson coef.: 0.274
Rigidity: 346 Pa*10⁸
Young module: 881 Pa*10⁸
Knoop hardness: 551
Abrasion: 170

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	96