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US 10,295,479 B2Granted
Board inspection apparatus
AssigneeCkd Corporation
InventorsNobuyuki Umemura, Akira Kato, Tsuyoshi Ohyama, Norihiko Sakaida
Life of this patent
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Abstract
A board inspection apparatus is disclosed, which includes one surface-side irradiator that irradiates a first area on a surface side of a board with first light, a surface-side camera that takes an image of the first area, one rear face-side irradiator that irradiates a second area on a rear face side of the board with second light, a rear face-side camera that takes an image of the second area; and a controller that inspects the first area based on image data obtained from the surface-side camera and the second area based on image data obtained from the rear face-side camera.
Claims19
A board inspection apparatus comprising:
- a surface-side irradiator that irradiates a first predetermined inspection area on a surface side of a board with first predetermined light;
- a surface-side camera that takes an image of the first predetermined inspection area irradiated with the first predetermined light;
- a rear face-side irradiator that irradiates a second predetermined inspection area on a rear face side of the board with second predetermined light;
- a rear face-side camera that takes an image of the second predetermined inspection area irradiated with the second predetermined light;
- and
- a controller that inspects
- the first predetermined inspection area based on a plurality of image data obtained from the surface-side camera, and
- the second predetermined inspection area based on a plurality of image data obtained from the rear face-side camera, wherein
- the controller alternately executes each of a first plurality of imaging processes by the surface-side camera and each of a second plurality of imaging processes by the rear face-side camera by:
- starting emission of the first predetermined light and stopping emission of the second predetermined light to execute one of the first plurality of imaging processes, and subsequently stopping emission of the first predetermined light and starting emission of the second predetermined light to execute one of the second plurality of imaging processes, or
- starting emission of the second predetermined light and stopping emission of the first predetermined light to execute one of the second plurality of imaging processes, and subsequently stopping emission of the second predetermined light and starting emission of the first predetermined light to execute one of the first plurality of imaging processes,
- each of the first predetermined light and the second predetermined light is patterned light having a light intensity distribution of a stripe shape, and
- a first time period during which the each of the first plurality of imaging processes is executed and a second time period during which the each of the second plurality of imaging processes is executed are repeated alternately, wherein the first time period and the second time period each correspond to a predetermined phase of the patterned light.
10 more elements
A board inspection apparatus comprising:
- a surface-side irradiator that emits first light to a first inspection area on a surface side of a board;
- a surface-side camera that takes a first plurality of images of the first inspection area;
- a rear face-side irradiator that emits second light to a second inspection area on a rear face side of the board;
- a rear face-side camera that takes a second plurality of images of the second inspection area;
- and
- a controller that
- causes the surface-side camera and the rear face-side camera to alternately take each of the first and the second plurality of images, and
- inspects the first and the second inspection area based on the first and the second plurality of images taken by the surface-side camera and the rear face-side camera, respectively, wherein
- when the surface-side camera takes the each of the first plurality of images, the controller causes the surface-side irradiator to start emitting the first light and causes the rear face-side irradiator to stop emitting the second light, and
- when the rear face-side camera takes the each of the second plurality of images, the controller causes the surface-side irradiator to stop emitting of the first light and causes the rear face-side irradiator to start emitting the second light,
- each of the first light and the second light is patterned light having a light intensity distribution of a stripe shape, and
- a first time period during which the each of the first plurality of images is taken and a second time period during which the each of the second plurality of images is taken are repeated alternately, wherein the first time period and the second time period each correspond to a predetermined phase of the patterned light.
9 more elements
Dependencies are inferred from the claim text.