LF5 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.581439 n_e = 1.584820	V_d = 40.80 V_e = 40.52	n_F - n_C = 0.014250 n_F' - n_C' = 0.014430	Coloring: 0.31 - 0.34 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.4448729 C2 = -0.0087715713 C3 = 0.018544331 C4 = 0.00068199314 C5 = -0.000023505236 C6 = 0.0000033917827

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.566689
n _s	1.570123
n _r	1.574880
n _C	1.577223
n _C'	1.577886
n _0.6328	1.578508
n _D	1.581314
n _d	1.581439
n _e	1.584820
n _F	1.591473
n _F'	1.592316
n _g	1.599659
n _h	1.606700
n _i	1.619299
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7391
P_C,A'	0.3261
P_d,C	0.2958
P_e,C	0.5331
P_g,d	1.2785
P_g,F	0.5744
P_h,g	0.4940
P_i,g	1.3782
P_C',t	0.7856
P_e,C'	0.4866
P_F',e	0.5260
P_i,F'	1.8935

transmittance: 10 mm
τ_0.31	0.05
τ_0.32	0.371
τ_0.33	0.74
τ_0.34	0.957
τ_0.35	0.95
τ_0.36	0.971
τ_0.37	0.982
τ_0.38	0.984
τ_0.39	0.99
τ_0.4	0.991
τ_0.42	0.992
τ_0.44	0.992
τ_0.46	0.994
τ_0.48	0.994
τ_0.5	0.995
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	0.998
τ_1.5	0.995
τ₂	0.936

transmittance: 25 mm
τ_0.32	0.084
τ_0.33	0.471
τ_0.34	0.896
τ_0.35	0.88
τ_0.36	0.93
τ_0.37	0.957
τ_0.38	0.961
τ_0.39	0.975
τ_0.4	0.978
τ_0.42	0.982
τ_0.44	0.982
τ_0.46	0.985
τ_0.48	0.985
τ_0.5	0.989
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	0.996
τ_1.5	0.989
τ₂	0.848

Poisson coef.: 0.218
Rigidity: 240 Pa*10⁸
Young module: 584 Pa*10⁸
Knoop hardness: 405
Abrasion: 140

Climatic resistance: 2
Resistance to acids: 1

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