Patent ID: 7796352
Filing Date: 2010-09-14
Classification: G02B

Abstract:
1. Device for removably fitting an objective with an external thread on a corresponding internal thread of an optical instrument, comprising an instrument adaptor having at one end an external thread corresponding to the external thread of the objective, and at an other end, a bayonet mount for fixably holding a bayonet base, and further comprising an objective adaptor which has at one end a bayonet base to be connected to the bayonet mount of the instrument adaptor, and at an other end an internal thread corresponding to the internal thread of the optical instrument, wherein the instrument adaptor comprises a mounting ring having the external thread, and a coupling ring having the bayonet mount, the mounting ring and coupling ring being rotatable relative to one another about a longitudinal axis of the instrument adaptor and being fixable in any selectable position relative to one another.