Patent ID: 6287020
Filing Date: 2001-09-11
Classification: G01M,G02B

Abstract:
An observation apparatus for optical fibers comprising:(A) a first imaging optical system located opposite to a plurality of pairs of optical fibers, said first imaging optical system comprising, in order from an object side:(a) a first pre-lens system,(b) a first aperture stop including an aperture at a position of rear focus of said first pre-lens system, and(c) a first post-lens system including a front focus at the position of the rear focus of said first pre-lens system; and(B) an image pickup device that picks up images of the optical fibers formed by said first imaging optical system, wherein a normal to an image pickup plane of said image pickup devices is inclined relative to the optical axis of said first imaging optical system, and wherein said image pickup plane is parallel to optical axes of said optical fibers.