4 Units Description
4-28
Figure 4-31 Position of Photometric Unit and AD Housing Assembly
4.6.2.1 Light Source Assembly
The light source assembly is composed of a filter wheel assembly, a lamp assembly, a light
source seat, lenses, radiators, fans, a motor and a sensor. The main function is to provide a
stable lignt source that emits a light beam to converge to the filter via lens. The filter of a
specific wavelength is placed to the light path by rotating the filter wheel. Also a good cooling
function for the lamp assembly is provided by the light source assembly.
Figure 4-32 Light Source Assembly
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