Liquid spray device and method for cleaning optical surfaces

A portable, self-contained spray device for cleaning at least one optical surface, said spray device comprising:

• a fluid reservoir:
• a cover tube having an inner wall, an outer wall, a first end and a second end;
• a nozzle assembly at said first end of said cover tube, said nozzle assembly including a seal to provide substantially fluid-tight contact between said spray device and the optical surface;
• a delivery tube, located inside said inner wall coaxial with said cover tube, said delivery tube coupled to said fluid reservoir to direct fluid towards said nozzle assembly;
• and
• an absorbent mounted adjacent to said outer wall of at least a portion of said cover tube to collect liquid residues after application of fluid to an optical surface.

A spray device for cleaning at least one optical surface having limited access thereto, said spray device comprising:

• a fluid reservoir;
• a cover tube having an inner wall, an outer wall, a first end and a second end;
• a nozzle assembly at said first end of said cover tube, said nozzle assembly including a seal to provide substantially fluid-tight contact between said spray device and the optical surface;
• a delivery tube, located inside said inner wall coaxial with said cover tube, said delivery tube coupled to said fluid reservoir to direct fluid towards said nozzle assembly;
• and
• an absorbent cartridge mounted adjacent to said outer wall of at least a portion of said cover tube to collect liquid residues after application of fluid to an optical surface, said absorbent cartridge comprising a detachable jacket surrounding an absorbent.

A process for cleaning at least one optical surface having limited access thereto said process comprising the steps of:

• providing at least one optical surface having limited access thereto;
• wiping a dry cleaner against the at least one optical surface;
• and
• applying a liquid cleaner to the at least one optical surface using a liquid spray device comprising:
• a fluid reservoir;
• a nozzle assembly communicating with said fluid reservoir, said nozzle assembly adapted to reach the at least one optical surface to deliver liquid spray thereto;
• and
• an absorbent to collect liquid residues from said liquid spray.