M-NBFD130 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.803579 n_e = 1.807430	V_d = 49.99 V_e = 49.94	n_F - n_C = 0.016073 n_F' - n_C' = 0.016165	Coloring: 0.34 - 0.39 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 3.1737942 C2 = -0.01498658 C3 = 0.029067406 C4 = 0.00012048287 C5 = -0.000053551578 C6 = 0.0000052713501

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.785140
n _s	1.789707
n _r	1.795740
n _C	1.798599
n _C'	1.799396
n _0.6328	1.800140
n _D	1.803434
n _d	1.803579
n _e	1.807430
n _F	1.814673
n _F'	1.815562
n _g	1.823059
n _h	1.829886
n _i	1.841422
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8373
P_C,A'	0.3572
P_d,C	0.3097
P_e,C	0.5493
P_g,d	1.2119
P_g,F	0.5217
P_h,g	0.4246
P_i,g	1.1423
P_C',t	0.8869
P_e,C'	0.4997
P_F',e	0.5059
P_i,F'	1.6088

transmittance: 5 mm
τ_1.55	0.997
τ_1.5	0.997
τ_1.4	0.995
τ_1.3	0.998
τ_1.2	0.999
τ_1.1	0.999
τ_1.06	0.999
τ_1.05	0.999
τ₁	0.999
τ_0.95	0.999
τ_0.9	0.999
τ_0.85	0.999
τ_0.83	0.999
τ_0.8	0.999
τ_0.78	0.999
τ_0.75	0.999
τ_0.7	0.999
τ_0.65	0.999
τ_0.6	0.999
τ_0.55	0.999
τ_0.5	0.998
τ_0.48	0.998
τ_0.46	0.997
τ_0.44	0.996
τ_0.42	0.995
τ_0.4	0.992
τ_0.39	0.986
τ_0.38	0.978
τ_0.37	0.962
τ_0.36	0.928
τ_0.35	0.852
τ_0.34	0.672
τ_0.33	0.38

transmittance: 10 mm
τ_1.55	0.995
τ_1.5	0.994
τ_1.4	0.989
τ_1.3	0.995
τ_1.2	0.999
τ_1.1	0.999
τ_1.06	0.999
τ_1.05	0.999
τ₁	0.999
τ_0.95	0.999
τ_0.9	0.999
τ_0.85	0.999
τ_0.83	0.999
τ_0.8	0.999
τ_0.78	0.999
τ_0.75	0.999
τ_0.7	0.999
τ_0.65	0.999
τ_0.6	0.998
τ_0.55	0.998
τ_0.5	0.996
τ_0.48	0.995
τ_0.46	0.992
τ_0.44	0.99
τ_0.42	0.984
τ_0.4	0.972
τ_0.39	0.956
τ_0.38	0.925
τ_0.37	0.862
τ_0.36	0.726
τ_0.35	0.451
τ_0.34	0.144

Knoop hardness: 610
Abrasion: 76

Staining: 3
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	76