摘要 |
<p>The housing has a circular shaped transparent inner dust filter (1) formed of transparent optical glass and arranged between a removable hermetic fixation system (2) of a lens and a camera obscura of a reflex type digital camera, to prevent the access of the dust to the housing and to a digital sensor, where the fixation mode of the filter is easily removable from the fixation system in the case of degradation of the filter. The filter blocks an inlet of the camera obscura of the reflex type digital camera, in a hermetical and transparent manner.</p> |