Patent ID: 7848022
Filing Date: 2010-12-07
Classification: G02B,H01L,H04N

Abstract:
1. An imaging device for a bonding apparatus for imaging an imaging subject and multi-layered semiconductor chips mounted on said imaging subject, comprising: a first optical system having a plurality of optical paths that extend to a plurality of imaging planes through a first lens and have different optical path lengths from said first lens to said respective imaging planes correspondingly to a plurality of subject imaging ranges at different distances from said first lens; a second optical system branching from said first optical system on a subject side of said first lens and having an optical path that extends to an imaging plane through a second lens with a lower magnification than said first lens, said second optical system having a field of view wider than that of said first optical system; first imaging elements provided on said respective imaging planes in said first optical system to image each layer of said multi-layered semiconductor chips mounted on said imaging subject; and a second imaging element provided on said imaging plane in said second optical system to image said imaging subject.