BONDING DEVICE AND METHOD FOR DETECTING HEIGHT OF SUBJECT
First Claim
1. A bonding apparatus comprising:
- an optical system that forms an image of a bonding target having a predetermined pattern;
an imaging element that acquires the image formed by the optical system as a picture;
an illumination unit that includes a plurality of light sources and illuminates the bonding target through an optical path of the optical system; and
a control part that processes the image acquired by the imaging element,wherein the control part illuminates the bonding target through a first optical path of the optical system facing the bonding target and causes the imaging element to acquire an image of the predetermined pattern of the bonding target as a first pattern image,illuminates the bonding target through a second optical path inclined with respect to the first optical path and causes the imaging element to acquire the image of the predetermined pattern of the bonding target as a second pattern image, andcalculates an amount of variation from a reference height of the bonding target on the basis of an positional offset amount between the first pattern image and the second pattern image.
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Accused Products
Abstract
A bonding apparatus having an optical system, an imaging element for acquiring an image formed by the optical system as a picture, an illumination unit for illuminating an electronic component, and a control part for processing the image acquired by the imaging element, the control part illuminating the electronic component through a first inclined optical path inclined with respect to the optical axis of a first portion of the optical system facing the electronic component and acquiring a first image, illuminating the electronic component through a second inclined optical path inclined toward the opposite side from the first inclined optical path with respect to the optical axis and acquiring a second image of the electronic component as a subject, and calculating an amount of variation from a reference height of the electronic component on the basis of the positional offset amount between the first image and the second image.
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Citations
11 Claims
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1. A bonding apparatus comprising:
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an optical system that forms an image of a bonding target having a predetermined pattern; an imaging element that acquires the image formed by the optical system as a picture; an illumination unit that includes a plurality of light sources and illuminates the bonding target through an optical path of the optical system; and a control part that processes the image acquired by the imaging element, wherein the control part illuminates the bonding target through a first optical path of the optical system facing the bonding target and causes the imaging element to acquire an image of the predetermined pattern of the bonding target as a first pattern image, illuminates the bonding target through a second optical path inclined with respect to the first optical path and causes the imaging element to acquire the image of the predetermined pattern of the bonding target as a second pattern image, and calculates an amount of variation from a reference height of the bonding target on the basis of an positional offset amount between the first pattern image and the second pattern image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for calculating an amount of variation from a reference height of a bonding target having a predetermined pattern, the method comprising:
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preparing an imaging apparatus including an optical system that forms an image of the bonding target, an imaging element that acquires the image formed by the optical system as a picture, an illumination unit that includes a plurality of light sources and illuminates the bonding target through an optical path of the optical system, and a control part that processes the image acquired by the imaging element; illuminating the bonding target through a first optical path of the optical system facing the bonding target and causing the imaging element to acquire an image of the predetermined pattern of the bonding target as a first pattern image; illuminating the bonding target through a second optical path inclined with respect to the first optical path and causing the imaging element to acquire the image of the predetermined pattern of the bonding target as a second pattern image; and calculating an amount of variation from a reference height of the bonding target on the basis of an positional offset amount between the first pattern image and the second pattern image. - View Dependent Claims (10, 11)
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Specification