LLF7 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.548691 n_e = 1.551561	V_d = 45.43 V_e = 45.15	n_F - n_C = 0.012077 n_F' - n_C' = 0.012215	Coloring: 0.31 - 0.34 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.351324 C2 = -0.0082345442 C3 = 0.016184681 C4 = 0.00033894613 C5 = 0.0000073313525 C6 = 0.00000086922344

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.535879
n _s	1.538928
n _r	1.543071
n _C	1.545088
n _C'	1.545657
n _0.6328	1.546190
n _D	1.548585
n _d	1.548691
n _e	1.551561
n _F	1.557165
n _F'	1.557873
n _g	1.563999
n _h	1.569820
n _i	1.580079
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7625
P_C,A'	0.3324
P_d,C	0.2983
P_e,C	0.5359
P_g,d	1.2675
P_g,F	0.5658
P_h,g	0.4819
P_i,g	1.3314
P_C',t	0.8096
P_e,C'	0.4888
P_F',e	0.5226
P_i,F'	1.8387

transmittance: 10 mm
τ_0.31	0.114
τ_0.32	0.54
τ_0.33	0.806
τ_0.34	0.909
τ_0.35	0.957
τ_0.36	0.971
τ_0.37	0.98
τ_0.38	0.982
τ_0.39	0.988
τ_0.4	0.988
τ_0.42	0.988
τ_0.44	0.988
τ_0.46	0.99
τ_0.48	0.991
τ_0.5	0.991
τ_0.55	0.991
τ_0.6	0.992
τ_0.65	0.994
τ_0.7	0.995
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.992
τ₂	0.929

transmittance: 25 mm
τ_0.32	0.214
τ_0.33	0.583
τ_0.34	0.789
τ_0.35	0.896
τ_0.36	0.93
τ_0.37	0.95
τ_0.38	0.957
τ_0.39	0.971
τ_0.4	0.971
τ_0.42	0.971
τ_0.44	0.971
τ_0.46	0.975
τ_0.48	0.978
τ_0.5	0.978
τ_0.55	0.978
τ_0.6	0.982
τ_0.65	0.985
τ_0.7	0.989
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.982
τ₂	0.832

Poisson coef.: 0.211
Rigidity: 257 Pa*10⁸
Young module: 623 Pa*10⁸
Knoop hardness: 469
Abrasion: 120

Climatic resistance: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	95