K-PBK40 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.517598 n_e = 1.519542	V_d = 63.54 V_e = 63.35	n_F - n_C = 0.008145 n_F' - n_C' = 0.008200	Coloring: 0.29 - 0.33 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.2735478 C2 = -0.010246004 C3 = 0.011125548 C4 = 0.000071357164 C5 = 0.000013279862 C6 = -0.00000075548313

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.507950
n _s	1.510495
n _r	1.513638
n _C	1.515089
n _C'	1.515491
n _0.6328	1.515866
n _D	1.517525
n _d	1.517598
n _e	1.519542
n _F	1.523235
n _F'	1.523692
n _g	1.527582
n _h	1.531159
n _i	1.537180
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8764
P_C,A'	0.3600
P_d,C	0.3080
P_e,C	0.5466
P_g,d	1.2255
P_g,F	0.5336
P_h,g	0.4391
P_i,g	1.1782
P_C',t	0.9258
P_e,C'	0.4973
P_F',e	0.5094
P_i,F'	1.6557

transmittance: 10 mm
τ_0.28	0.011
τ_0.29	0.1
τ_0.3	0.294
τ_0.31	0.534
τ_0.32	0.72
τ_0.33	0.846
τ_0.34	0.915
τ_0.35	0.957
τ_0.36	0.978
τ_0.37	0.988
τ_0.38	0.988
τ_0.39	0.99
τ_0.4	0.991
τ_0.42	0.991
τ_0.44	0.991
τ_0.46	0.991
τ_0.48	0.991
τ_0.5	0.991
τ_0.55	0.992
τ_0.6	0.992
τ_0.65	0.992
τ_0.7	0.995
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.998

transmittance: 25 mm
τ_0.3	0.047
τ_0.31	0.208
τ_0.32	0.44
τ_0.33	0.659
τ_0.34	0.801
τ_0.35	0.896
τ_0.36	0.947
τ_0.37	0.971
τ_0.38	0.971
τ_0.39	0.975
τ_0.4	0.978
τ_0.42	0.978
τ_0.44	0.978
τ_0.46	0.978
τ_0.48	0.978
τ_0.5	0.978
τ_0.55	0.982
τ_0.6	0.982
τ_0.65	0.982
τ_0.7	0.989
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.996

Poisson coef.: 0.229
Rigidity: 325 Pa*10⁸
Young module: 799 Pa*10⁸
Knoop hardness: 615
Abrasion: 70

Climatic resistance: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	73