Patent ID: 8814368
Filing Date: 2014-08-26
Classification: G02B,G03B

Abstract:
1. An objective for a camera, the objective defining an axis and comprising: an inner objective element; an outer objective element at least partially surrounding said inner objective element; said inner objective element and said outer objective element conjointly defining an interface and being mounted so as to be rotatable relative to each other about said axis; a sealing system disposed at said interface between said inner objective element and said outer objective element; and, said sealing system including a plastic foil in contact engagement with said inner objective element and said outer objective element; wherein an edge of said plastic foil is in linear contact engagement with at least one of said inner objective element and said outer objective element; wherein said plastic foil is made from a material and has a thickness selected so as to cause said plastic foil to be elastically configured in the direction of said axis; and, wherein said plastic foil has a curved profile in an installed state to generate pressure in a radial direction.