Combined service equipment receptacle and holder for spectacles
Combined studio and field television camera lens shade
Combined sunglasses and visor
Combined ultraviolet lamp and magnifying lens for authenticating
Combined visor and eye shield
Compact night vision device
Concentrator lens
Condensing lens system
Connector for endoscope
Contact lens and accessory container
Contact lens inserter
Contact lens inserter
Contact lens inserting instrument
Contact lens manipulator
Contact lens manipulator tip
Contact lens remover
Contact lens tray
Contact lens tray
Conversion lens for a miniature camera
Conversion lens for single-lens reflex camera