Patent ID: 11940485
Assignee: TOKYO ELECTRON LIMITED
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An inspection apparatus for inspecting an inspection target device,
wherein the inspection target device formed on an inspection object is a back-illuminated imaging device into which light is incident from a rear surface which is a surface opposite a side on which a wiring layer is provided,
wherein the inspection apparatus comprises a stage on which the inspection object is placed in a state in which the inspection object faces the rear surface of the imaging device,
wherein the stage includes:
a light transmitter made of a light-transmissive material and configured to have the inspection object placed thereon, and
a light illuminator disposed in an area below the light transmitter,
wherein the light illuminator includes:
a flat light guide plate having a facing surface that faces the inspection object with the light transmitter interposed therebetween, and
a plurality of light sources provided in a region laterally outside the light guide plate and provided along a side end surface of the light guide plate,
wherein the light guide plate is configured to diffuse light emitted from the plurality of light sources and incident from the side end surface of the light guide plate inside the light guide plate, and to emit the light as planar light from the facing surface that faces the inspection object.