Patent ID: 11953314
Assignee: NIDEC READ CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An imaging device for imaging a substrate that includes bumps that are on a substrate surface and are arranged at positions that correspond to points of intersection of a grid, the imaging device comprising:
a light emitting portion that emits light in a direction that is inclined relative to the substrate surface;
an imaging portion that images the substrate surface onto which the light is emitted; and
a direction adjusting portion that adjusts an arrangement relation between the direction in which the light is emitted and an orientation of the substrate to allow a diagonal direction that passes through diagonal positions of the grid to substantially correspond to the direction in which the light is emitted, in a plan view,
wherein the imaging portion images the substrate while the diagonal direction substantially corresponds to the direction in which the light is emitted, in a plan view.