Light source device

Patent metadata

Field	Value
Publication number	US-11844167-B2
Application number	US-201917633104-A
Country	US
Kind code	B2
Filing date	Aug 5, 2019
Priority date	Aug 5, 2019
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

In light source device 60, which is disposed in a component mounter for holding a component by using mounting head 24 and mounting a held component that is the component that has been held on a board, and used when the held component is imaged by imaging device 50, and includes multiple light sources 62; and controller 64 configured to control the multiple light sources, when one or more of the multiple light sources do not emit light, the controller executes light intensity enhancement processing of enhancing an intensity of light emitted by any of the other light sources among the multiple light sources. By executing the light intensity enhancement processing, in a case where any of the multiple light sources fails, it is possible to reduce a possibility that a component mounting operation by the component mounter is stopped.

First claim

The invention claimed is:

1. A light source device, which is disposed in a component mounter including a mounting head that holds and mounts a component on a board, comprising:
multiple light sources configured to illuminate the component held by the mounting head when the component imaged by an imaging device; and
a controller configured to control the multiple light sources,
wherein when one or more of the multiple light sources do not emit light, the controller executes light intensity enhancement processing of enhancing an intensity of light emitted by any of other light sources among the multiple light sources,
wherein each of the multiple light sources irradiates a phosphor with ultraviolet light in order to allow the imaging device to capture a silhouette image of the component held by the mounting head by using fluorescence emitted from the phosphor, and
wherein the controller prohibits an operation of the light source device when a portion where a brightness is not greater than or equal to a set brightness is present in the phosphor even when the light intensity enhancement processing is performed.

2. A light source device, which is disposed in a component mounter including a mounting head that holds and mounts a component on a board, comprising:
multiple light sources configured to illuminate the component held by the mounting head when the component imaged by an imaging device; and
a controller configured to control the multiple light sources,
wherein when one or more of the multiple light sources do not emit light, the controller executes light intensity enhancement processing of enhancing an intensity of light emitted by any of other light sources among the multiple light sources,
wherein each of the multiple light sources irradiates a phosphor with ultraviolet light in order to allow the imaging device to capture a silhouette image of the component held by the mounting head by using fluorescence emitted from the phosphor, and
wherein the controller prohibits an operation of the light source device when a brightness difference between a high brightness portion and a low brightness portion of the phosphor is greater than or equal to a set difference even when the light intensity enhancement processing is performed.

3. A light source device, which is disposed in a component mounter including a mounting head that holds and mounts a component on a board, comprising:
multiple light sources configured to illuminate the component held by the mounting head when the component imaged by an imaging device; and
a controller configured to control the multiple light sources,
wherein when one or more of the multiple light sources do not emit light, the controller executes light intensity enhancement processing of enhancing an intensity of light emitted by any of other light sources among the multiple light sources, and
wherein when two or more of the multiple light sources do not emit light, the controller specifies two or more of the multiple light sources and executes the light intensity enhancement processing on a precondition that a relationship between disposition positions of the two or more of the multiple light sources is not a specific relationship.

Assignees

• Fuji Corp

Inventors

• MATSUYAMA Kazuya

Classifications

• H05B47/29 Primary

  Circuits providing for substitution of the light source in case of its failure · CPC title

• H05B47/155

  Coordinated control of two or more light sources · CPC title

• H05K13/0812 Primary

  the monitoring devices being integrated in the mounting machine, e.g. for monitoring components, leads, component placement · CPC title