Figure 4(a) shows the results of calculating the unevenness
of the irradiation as a function of the light-source area
and the distance between the solar cell and the light source
when LED of 4 colors is used. And Figure 4(b) shows the
unevenness when LED of 6 colors is used. The values used
in the illuminance simulation are given in Table. 1, and the
distribution map of the unevenness are given in Fig.4(a-1,2)-
Fig.4(b-1,2). The illuminated area is square 100 mm on a
side, the angle ofbeam spread is 120 degrees. The unevenness
decreases as the intervals between the light-source and
the cell increases, before the minimum value is obtained.
However, the unevenness increases reversely when the distance
is larger than the minimum value. In the case of the
close-in illumination, The difference in an irradiance between
just below LED and except is shown in Fig.4(a-l). On the
other hand, in the case of illumination apart from the object,
the center of the cell is illuminated with the highest irradiance,
shown in Fig.4(a-2).
Figure 4(a) shows the results of calculating the unevennessof the irradiation as a function of the light-source areaand the distance between the solar cell and the light sourcewhen LED of 4 colors is used. And Figure 4(b) shows theunevenness when LED of 6 colors is used. The values usedin the illuminance simulation are given in Table. 1, and thedistribution map of the unevenness are given in Fig.4(a-1,2)-Fig.4(b-1,2). The illuminated area is square 100 mm on aside, the angle ofbeam spread is 120 degrees. The unevennessdecreases as the intervals between the light-source andthe cell increases, before the minimum value is obtained.However, the unevenness increases reversely when the distanceis larger than the minimum value. In the case of theclose-in illumination, The difference in an irradiance betweenjust below LED and except is shown in Fig.4(a-l). On theother hand, in the case of illumination apart from the object,the center of the cell is illuminated with the highest irradiance,shown in Fig.4(a-2).
การแปล กรุณารอสักครู่..