M-LAC130 - Hoya

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.693499 n_e = 1.696606	V_d = 53.20 V_e = 52.96	n_F - n_C = 0.013035 n_F' - n_C' = 0.013151	Coloring: 0.29 - 0.37 mkm.

Type: Schott
Spectral range: 0.36501 - 1.014 mkm.
C1 = 2.813412 C2 = -0.013324481 C3 = 0.019278652 C4 = 0.00041244521 C5 = -0.0000099404319 C6 = 0.00000096220244

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.678941
n _s	1.682571
n _r	1.687297
n _C	1.689544
n _C'	1.690173
n _0.6328	1.690761
n _D	1.693383
n _d	1.693499
n _e	1.696606
n _F	1.702580
n _F'	1.703325
n _g	1.709705
n _h	1.715640
n _i	1.725809
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8134
P_C,A'	0.3455
P_d,C	0.3033
P_e,C	0.5417
P_g,d	1.2431
P_g,F	0.5465
P_h,g	0.4552
P_i,g	1.2353
P_C',t	0.8616
P_e,C'	0.4934
P_F',e	0.5154
P_i,F'	1.7247

transmittance: 5 mm
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	0.997
τ_0.46	0.996
τ_0.44	0.995
τ_0.42	0.993
τ_0.4	0.989
τ_0.39	0.985
τ_0.38	0.978
τ_0.37	0.966
τ_0.36	0.95
τ_0.35	0.91
τ_0.34	0.85
τ_0.33	0.77
τ_0.32	0.66
τ_0.31	0.52
τ_0.3	0.37
τ_0.29	0.2
τ_0.28	0.06

transmittance: 10 mm
τ_0.7	0.998
τ_0.65	0.997
τ_0.6	0.997
τ_0.55	0.997
τ_0.5	0.996
τ_0.48	0.995
τ_0.46	0.993
τ_0.44	0.989
τ_0.42	0.986
τ_0.4	0.979
τ_0.39	0.971
τ_0.38	0.957
τ_0.37	0.934
τ_0.36	0.9
τ_0.35	0.82
τ_0.34	0.73
τ_0.33	0.59
τ_0.32	0.44
τ_0.31	0.27
τ_0.3	0.14
τ_0.29	0.04

Poisson coef.: 0.289
Rigidity: 440 Pa*10⁸
Young module: 1135 Pa*10⁸
Knoop hardness: 650
Optical stress coef.: 2.01 1/Pa*10¹²
Abrasion: 80

Staining: 4
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	69
100 ~ 300	85

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		2
-20 ~ 0		2.5
0 ~ 20		2.9
20 ~ 40		3.2
40 ~ 60		3.4
60 ~ 80		3.6

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		4.3
-20 ~ 0		4.4
0 ~ 20		4.6
20 ~ 40		4.7
40 ~ 60		4.7
60 ~ 80		4.8