| 摘要 |
An optical device 10 for a vehicle comprises an optical element 14 and protective mechanism 20, which are both at least partially encased by a housing 12. A clear tape 22, part of the protective mechanism and moveably mounted within the housing, is exposed by the housing to cover the side of the optical element facing away from the housing. The optical element may be a source of light or a camera 16, whereby the lens 18 is blocked by the transparent film. The housing may include a template 38 equipped to clean part of the light transmitting tape to prevent unwanted foreign matter (dirt, dust, water) entering the housing. The protective mechanism may comprise automatically rotating spools 24, 26, one from which the transparent foil is unrolled and a second which it is wound onto; the rollers may be rotatable around the same or different axis. |
