LLF1 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.548140 n_e = 1.550978	V_d = 45.89 V_e = 45.60	n_F - n_C = 0.011944 n_F' - n_C' = 0.012080	Coloring: 0.31 - 0.34 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.3494895 C2 = -0.0079027067 C3 = 0.016497587 C4 = 0.00018108174 C5 = 0.000027888821 C6 = -0.000000099314145

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.535450
n _s	1.538469
n _r	1.542577
n _C	1.544575
n _C'	1.545138
n _0.6328	1.545666
n _D	1.548035
n _d	1.548140
n _e	1.550978
n _F	1.556519
n _F'	1.557219
n _g	1.563282
n _h	1.569048
n _i	1.579220
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7639
P_C,A'	0.3331
P_d,C	0.2984
P_e,C	0.5360
P_g,d	1.2676
P_g,F	0.5661
P_h,g	0.4827
P_i,g	1.3343
P_C',t	0.8111
P_e,C'	0.4888
P_F',e	0.5225
P_i,F'	1.8419

transmittance: 10 mm
τ_0.31	0.048
τ_0.32	0.447
τ_0.33	0.779
τ_0.34	0.912
τ_0.35	0.967
τ_0.36	0.985
τ_0.37	0.988
τ_0.38	0.988
τ_0.39	0.995
τ_0.4	0.997
τ_0.42	0.997
τ_0.44	0.997
τ_0.46	0.997
τ_0.48	0.997
τ_0.5	0.998
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	0.998
τ_1.5	0.998
τ₂	0.934

transmittance: 25 mm
τ_0.32	0.134
τ_0.33	0.536
τ_0.34	0.795
τ_0.35	0.92
τ_0.36	0.964
τ_0.37	0.971
τ_0.38	0.971
τ_0.39	0.989
τ_0.4	0.992
τ_0.42	0.992
τ_0.44	0.992
τ_0.46	0.992
τ_0.48	0.992
τ_0.5	0.996
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	0.996
τ_1.5	0.996
τ₂	0.845

Poisson coef.: 0.214
Rigidity: 247 Pa*10⁸
Young module: 599 Pa*10⁸
Knoop hardness: 453
Abrasion: 130

Climatic resistance: 1
Resistance to acids: 1

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