LaSFn21 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.850001 n_e = 1.856206	V_d = 32.40 V_e = 32.16	n_F - n_C = 0.026230 n_F' - n_C' = 0.026619	Coloring: 0.37 - 0.48 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 3.3072284 C2 = -0.017620663 C3 = 0.035742443 C4 = 0.002392217 C5 = -0.00013426424 C6 = 0.000014464388

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.823740
n _s	1.829726
n _r	1.838148
n _C	1.842352
n _C'	1.843548
n _0.6328	1.844673
n _D	1.849772
n _d	1.850001
n _e	1.856206
n _F	1.868583
n _F'	1.870168
n _g	1.884109
n _h	1.897730
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7095
P_C,A'	0.3165
P_d,C	0.2915
P_e,C	0.5281
P_g,d	1.3002
P_g,F	0.5918
P_h,g	0.5192
P_i,g	-----
P_C',t	0.7551
P_e,C'	0.4825
P_F',e	0.5322
P_i,F'	-----

transmittance: 10 mm
τ_0.37	0.036
τ_0.38	0.234
τ_0.39	0.495
τ_0.4	0.69
τ_0.42	0.865
τ_0.44	0.926
τ_0.46	0.953
τ_0.48	0.971
τ_0.5	0.982
τ_0.55	0.995
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.994
τ_1.5	0.991
τ₂	0.967

transmittance: 25 mm
τ_0.38	0.026
τ_0.39	0.173
τ_0.4	0.396
τ_0.42	0.697
τ_0.44	0.826
τ_0.46	0.887
τ_0.48	0.93
τ_0.5	0.957
τ_0.55	0.989
τ_0.6	0.992
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.985
τ_1.5	0.979
τ₂	0.92

Poisson coef.: 0.284
Rigidity: 400 Pa*10⁸
Young module: 1028 Pa*10⁸
Knoop hardness: 580
Abrasion: 110

Climatic resistance: 1
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	76