An apparatus for cleaning an optical surface is disclosed. At least a portion of the surface is covered by an optically transparent liquid film, the liquid film disposed to protect the optical surface while transmitting light to an underlying optical device. The apparatus includes a wiper including an edge extending across at least a portion of the optical surface and urged into close proximity with the optical surface. The apparatus includes an actuator operable to move of at least one of the wiper and the optical surface to cause the wiper to traverse the optical surface such that the wiper dislodges contaminants entrained in the liquid film or adhered to the optical surface. The edge of the wiper includes a sufficiently rigid material selected to resist deformation that would permit contaminants to pass under the wiper while traversing the optical surface.
Apparatus for cleaning an optical surface in an optical device
2023-02-23
Patent
Electronic Resource
English
APPARATUS FOR CLEANING AN OPTICAL SURFACE IN AN OPTICAL DEVICE
European Patent Office | 2021
|APPARATUS FOR CLEANING AN OPTICAL SURFACE IN AN OPTICAL DEVICE
European Patent Office | 2021
|