LF1 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.573090 n_e = 1.576277	V_d = 42.68 V_e = 42.39	n_F - n_C = 0.013426 n_F' - n_C' = 0.013591	Coloring: 0.31 - 0.34 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.4221923 C2 = -0.0086802852 C3 = 0.017432349 C4 = 0.00061972412 C5 = -0.00001944062 C6 = 0.0000027848

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.559100
n _s	1.562380
n _r	1.566894
n _C	1.569110
n _C'	1.569736
n _0.6328	1.570324
n _D	1.572972
n _d	1.573090
n _e	1.576277
n _F	1.582536
n _F'	1.583328
n _g	1.590218
n _h	1.596805
n _i	1.608540
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7455
P_C,A'	0.3277
P_d,C	0.2964
P_e,C	0.5338
P_g,d	1.2757
P_g,F	0.5721
P_h,g	0.4906
P_i,g	1.3646
P_C',t	0.7922
P_e,C'	0.4871
P_F',e	0.5251
P_i,F'	1.8778

transmittance: 10 mm
τ_0.31	0.04
τ_0.32	0.347
τ_0.33	0.727
τ_0.34	0.883
τ_0.35	0.943
τ_0.36	0.971
τ_0.37	0.982
τ_0.38	0.982
τ_0.39	0.988
τ_0.4	0.99
τ_0.42	0.991
τ_0.44	0.991
τ_0.46	0.991
τ_0.48	0.992
τ_0.5	0.994
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	0.998
τ₂	0.943

transmittance: 25 mm
τ_0.32	0.071
τ_0.33	0.45
τ_0.34	0.733
τ_0.35	0.864
τ_0.36	0.93
τ_0.37	0.957
τ_0.38	0.957
τ_0.39	0.971
τ_0.4	0.975
τ_0.42	0.978
τ_0.44	0.978
τ_0.46	0.978
τ_0.48	0.982
τ_0.5	0.985
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	0.996
τ₂	0.864

Poisson coef.: 0.226
Rigidity: 241 Pa*10⁸
Young module: 591 Pa*10⁸
Knoop hardness: 392
Abrasion: 150

Climatic resistance: 2
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	107