458
5 Laser Specklometer, Speckle-Optical Diagnostics and Laser …
Table 5.1 Results of determining of reproducibility of measurements
Parameter
Wavelength (λ), nm
400
450
542
560
577
650
800
K
9.6
14.6
16
17.4
15.2
121.4
150
σ
1.02
1.36
0.89
1.02
0.75
2.94
5.55
Fig. 5.59 Spectral changes of human skin reflection coefficient. Reprinted from [87] with
permission
values of reflection coefficients K and mean-square deviation σ separately for men
and women were conducted (Table 5.2).
The obtained results indicate the absence of differences in reflection coefficients
of human skin depending on the sex. The difference in amplitudes of spectral curves
of reflection coefficient for men and women presented in the work [279] is obviously
connected with the absence of reliable statistical information. The changes of amplitude of spectral curves of reflection coefficient, derived by us, do not depend on the
Table 5.2 Results of the measurements of spectral reflection coefficients of human skin
λ, nm
Male
Female
K , %
σ
K , %
σ
400
30.25
3.63
32.50
4.92
450
34.75
2.95
38.50
5.12
500
49.50
5.22
51.75
10.01
560
45.50
4.61
45.25
7.92
600
81.50
9.55
79.0
13.6
660
141.75
11.80
146.25
17.64
750
171.5
13.09
177.0
12.98