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

Claim 5:
6. An imaging method 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 method comprising:
(A) a light emitting step that emits light in a direction that is inclined relative to the substrate surface;
(B) an imaging step that images the substrate surface onto which the light is emitted; and
(C) a direction adjusting step 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 step (B) images the substrate while the diagonal direction substantially corresponds to the direction in which the light is emitted, in a plan view.