Connection inspecting apparatus, connection inspecting method, and recording medium for recording programs executing the method
First Claim
1. A connection inspecting apparatus for inspecting connection of a connected part, said connection inspecting apparatus comprising:
- an irradiation part for applying radiation to the connected part of members with an application condition being invariant;
a scintillator for converting the radiation passed through the connected part to a visible light;
an imaging device for picking up a plurality of transmission images of the connected part generated from said scintillator for a plurality of different storage times;
a sub-thickness image forming device for forming a plurality of sub-thickness images corresponding respectively to the plurality of transmission images of the plurality of different storage times supplied from said imaging device based on a relationship between a brightness density of the plurality of transmission images and a thickness of the connected part; and
a superimposed image forming device for forming a thickness superimposed image of the connected part by adding the plurality of the sub-thickness images to each other, wherein said superimposed image forming device forms the thickness superimposed image of the connected part by adding the plurality of sub-thickness images to each other when a value of the thickness of the connected part is within a certain range, and extracts and collects only valid parts of the plurality of sub-thickness images, respectively, so as to form the thickness superimposed image when the value of the thickness of the connected part is not within the certain range.
1 Assignment
0 Petitions
Accused Products
Abstract
Brightness information of, for example, an average value of brightnesses at an X-ray image of a first connected part when an electronic component is mounted onto only one face of a printed board is obtained. Binary images of an X-ray image of the board with the electronic components mounted to both faces are formed by an upper and a lower levels relative to the brightness information. The binary images are synthesized with each other so as to extract an image of only a second connected part. The image of only the second connected part can be obtained in this manner on the basis of the X-ray image of the double face-mounted board, so that an accuracy for connection inspection is improved. Also, a relationship between a density in the X-ray image of the connected part and a thickness of the connected part is obtained beforehand, based on which a plurality of thickness images are obtained for a plurality of X-ray images of different image storage times. The connected part can be inspected by synthesizing the images.
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Citations
30 Claims
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1. A connection inspecting apparatus for inspecting connection of a connected part, said connection inspecting apparatus comprising:
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an irradiation part for applying radiation to the connected part of members with an application condition being invariant;
a scintillator for converting the radiation passed through the connected part to a visible light;
an imaging device for picking up a plurality of transmission images of the connected part generated from said scintillator for a plurality of different storage times;
a sub-thickness image forming device for forming a plurality of sub-thickness images corresponding respectively to the plurality of transmission images of the plurality of different storage times supplied from said imaging device based on a relationship between a brightness density of the plurality of transmission images and a thickness of the connected part; and
a superimposed image forming device for forming a thickness superimposed image of the connected part by adding the plurality of the sub-thickness images to each other, wherein said superimposed image forming device forms the thickness superimposed image of the connected part by adding the plurality of sub-thickness images to each other when a value of the thickness of the connected part is within a certain range, and extracts and collects only valid parts of the plurality of sub-thickness images, respectively, so as to form the thickness superimposed image when the value of the thickness of the connected part is not within the certain range. - View Dependent Claims (2, 3, 4, 5)
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6. A connection inspecting method for inspecting a connected part, said connection inspecting method comprising:
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applying radiation to the connected part of members with an application condition being invariant, and then converting the radiation passed through the connected part to visible light;
picking up a plurality of transmission images of the connected part expressed by the visible light for a plurality of different storage times;
forming a plurality of images corresponding respectively to the plurality of transmission images of the plurality of different storage times based on a relationship between a brightness density of the plurality of transmission images and a thickness of the connected part; and
forming a thickness superimposed image by adding the plurality of sub-thickness images to each other so as to inspect the connected part when a value of the thickness of the connected part is within a certain range, and forming the thickness superimposed image by extracting and collecting only valid parts of the plurality of sub-thickness images, respectively, when the value of the thickness of the connected part is not within the certain range. - View Dependent Claims (7, 8)
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9. A program on a computer readable recording medium to make a computer execute, said program comprising:
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a process for applying radiation to a connected part of members with an application condition being invariant, and converting the radiation passed through the connected part to a visible light;
a process for picking up a plurality of transmission images of the connected part expressed by the visible light for a plurality of different storage times;
a process for forming sub-thickness images corresponding respectively to the plurality of transmission images of the plurality of different storage times based on a relationship between a brightness density of the plurality of transmission images and a thickness of the connected part; and
a process for adding the plurality of sub-thickness images to each other so as to form a thickness superimposed image when a value of the thickness of the connected part is within a certain range, and extracting and collecting only valid parts of the plurality of sub-thickness images, respectively, so as to form the thickness superimposed image when the value of the thickness of the connected part is not within the certain range. - View Dependent Claims (10)
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11. A connection inspecting apparatus comprising:
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an irradiation device for applying radiation to an object to be inspected having a first connection part and a second connection part;
a scintillator for converting the radiation passed through the object to visible light;
an imaging device for picking up a transmission image of the object generated from said scintillator; and
an image forming device for forming brightness information based on the transmission image supplied from said imaging device of the first connected part and the second connected part of the object to be inspected which overlap at an overlapping part in a thicknesswise direction thereof, and for forming an image of only the second connected part based on the brightness information. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A connection inspecting method comprising:
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applying a radiation to an object to be inspected which has a first connected part overlapping with a second connected part at an overlapping part in a thicknesswise direction of the object, and converting a the radiation passed through the object to visible light;
forming brightness information based on a transmission image of the first connected part and the second connected part in an overlap state which is obtained through the converting to the visible light; and
forming an image of only the second connected part based on the brightness information. - View Dependent Claims (22, 23, 24, 25)
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26. A program on a computer readable recording medium to make a computer execute, said program comprising:
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a process of applying a radiation to an object to be inspected which has a first connected part overlapping with a second connected part at an overlapping part in a thickness direction of the object;
a process of forming brightness information based on a transmission image of the first connected part and the second connected part in an overlap state which is obtained by converting the radiation passed through the object to visible light; and
a process of forming an image of only the second connected part based on the brightness information. - View Dependent Claims (27, 28, 29, 30)
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Specification