Patent US4641055A successfully refreshed from Google Patents.
Patent US5039868A successfully refreshed from Google Patents.
US5039868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for inspecting printed circuit boards and the like
Assignee: Omron Corp
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Filing: 1989-11-22
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Granted: 1991-08-13
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Expires: 2009-11-22
Abstract
Abstract Disclosed is a substrate inspecting method in which light is projected to a part (21) mounted on a substrate (20) from a ring-shaped light source (29), reflected light form the surface of a soldered portion (44) is imaged by an imaging unit (32) and the nature of the soldered portion is inspected by its imaged pattern, characterized by applying fluorescent agents (70) to at least the periphery of the soldered portion of the mounted part on the surface of the substrate, exposing the surface coated with the fluorescent agents to light from the ring-shaped light source to excite the fluorescent agents, exposing the surface of the soldered portion to secondary illuminating light produced by the fluorescent agents to image its reflected light.
Inventors
- 👤 Shigeki Kobayashi
- 👤 Hideaki Takahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:19
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/95; G01N21/956; G01N21/95684; G01N21/62; G01N21/63; G01N21/64; G01N21/6428; G01N2021/6439; G01N21/8851; G01N2021/8887; G01N2021/95638; G01N2021/95646; G01N2201/00; G01N2201/06; G01N2201/061; G01N2201/06193
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
156 words
A substrate inspecting apparatus for inspecting a part mounted on a substrate for the integrity of a soldered portion thereon, comprising: light projecting means including a plurality of ring-shaped light sources for directing light of different hues to said part obliquely from one direction at different angles of incidence; first imaging means including a color camera for imaging reflected light from the surface of a portion to be inspected by hues on the center line of each of the ring-shaped light sources in a position directly over the part; second imaging means including a color or monochrome camera for imaging the reflected light from the surface of said portion to be inspected in a position around the side of the part; and determining and processing means for detecting the nature of the soldered portion by an imaged pattern obtained by each of the first and second imaging means to determine whether or not soldering is acceptable.
Claim 2
Dependent Claim
156 words
A substrate inspecting apparatus for inspecting a part mounted on a substrate for the integrity of a soldered portion thereon, comprising: light projecting means including a plurality of ring-shaped light sources for directing light of different hues to said part obliquely from one direction at different angles of incidence; first imaging means including a color camera for imaging reflected light from the surface of a portion to be inspected by hues on the center line of each of the ring-shaped light sources in a position directly over the part; second imaging means including a color or monochrome camera for imaging the reflected light from the surface of said portion to be inspected in a position around the side of the part; and determining and processing means for detecting the nature of the soldered portion by an imaged pattern obtained by each of the first and second imaging means to determine whether or not soldering is acceptable.
Claim 3
Dependent Claim
18 words
The apparatus according to claim 1, wherein said light projecting means comprises two or three ring-shaped light sources.
Claim 4
Dependent Claim
86 words
The apparatus according to claim 1, wherein: said light projecting means comprises a plurality of ring-shaped light sources for instantaneously illuminating said part by white light in time series at different angles of incidence, and said determining and processing means accepts the image obtained by each of the first and second imaging means in response to timing of instantaneous illumination from each of said light sources and detect the integrity of the soldered portion by a imaged pattern to determine whether or not soldering is acceptable.
Claim 5
Dependent Claim
18 words
The apparatus according to claim 1, wherein said second imaging means comprises four color or monochrome television cameras.
Claim 6
Dependent Claim
22 words
The apparatus of claim 4, wherein said color or monochrome television cameras are at 90° intervals around the part to be inspected.
Claim 7
Dependent Claim
35 words
The apparatus of claim 1, wherein said determining and processing means comprises A/D converting means, image processing means, a teaching table, a determining means, a controller for imaging, and an X and Y table controller.
Claim 8
Dependent Claim
9 words
The apparatus of claim 6, further comprising a keyboard.
Claim 9
Dependent Claim
9 words
The apparatus of claim 6, further comprising display means.
Claim 10
Dependent Claim
9 words
The apparatus of claim 6, further comprising a printer.
Claim 11
Dependent Claim
9 words
The apparatus of claim 6, further comprising a memory.
Claim 12
Dependent Claim
10 words
The apparatus of claim 6, further comprising a control unit.
Claim 13
Dependent Claim
141 words
A substrate inspecting apparatus for inspecting a part mounted on a substrate for the integrity of a soldered portion thereon, comprising: light projecting means including a ring-shaped light source for directing white light to said part obliquely from one direction; first imaging means including a color camera for imaging reflected light from the surface of a portion to be inspected on the center line of the ring-shaped light source in a position directly over the part; second imaging means including a monochrome camera for imaging the reflected light from the surface of said portion to be inspected in a position around the side of the part; and determining and processing means for detecting the integrity of the soldered portion by an imaged pattern obtained by each of the first and second imaging means to determine whether or not soldering is acceptable.
Claim 14
Dependent Claim
141 words
A substrate inspecting apparatus for inspecting a part mounted on a substrate for the integrity of a soldered portion thereon, comprising: light projecting means including a ring-shaped light source for directing white light to said part obliquely from one direction; first imaging means including a color camera for imaging reflected light from the surface of a portion to be inspected on the center line of the ring-shaped light source in a position directly over the part; second imaging means including a monochrome camera for imaging the reflected light from the surface of said portion to be inspected in a position around the side of the part; and determining and processing means for detecting the integrity of the soldered portion by an imaged pattern obtained by each of the first and second imaging means to determine whether or not soldering is acceptable.
Claim 15
Dependent Claim
35 words
The apparatus of claim 12, wherein said determining and processing means comprises A/D converting means, image processing means, a teaching table, a determining means, a controller for imaging, and an X and Y table controller.
Claim 16
Dependent Claim
9 words
The apparatus of claim 13, further comprising a keyboard.
Claim 17
Dependent Claim
9 words
The apparatus of claim 13, further comprising display means.
Claim 18
Dependent Claim
9 words
The apparatus of claim 13, further comprising a printer.
Claim 19
Dependent Claim
9 words
The apparatus of claim 13, further comprising a memory.
Claim 20
Dependent Claim
10 words
The apparatus of claim 13, further comprising a control unit.
Claim 21
Dependent Claim
109 words
A substrate inspecting method in which light is directed to a part mounted on substrate from a ring-shaped light source, reflected light from the surface of a soldered portion is imaged and the integrity of the soldered portion is inspected by its imaged pattern, characterized by applying fluorescent agents to at least the periphery of the soldered portion of the mounted part on the surface of said substrate, exposing the surface coated with the fluorescent agents to light from said ring-shaped light source to excite the fluorescent agents, exposing the surface of the soldered portion to secondary illuminating light produced by the fluorescent agents to image light reflected therefrom.
Claim 22
Dependent Claim
109 words
A substrate inspecting method in which light is directed to a part mounted on substrate from a ring-shaped light source, reflected light from the surface of a soldered portion is imaged and the integrity of the soldered portion is inspected by its imaged pattern, characterized by applying fluorescent agents to at least the periphery of the soldered portion of the mounted part on the surface of said substrate, exposing the surface coated with the fluorescent agents to light from said ring-shaped light source to excite the fluorescent agents, exposing the surface of the soldered portion to secondary illuminating light produced by the fluorescent agents to image light reflected therefrom.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-12 | 1995-02-11 | 1995-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-12 | 1999-02-11 | 1999-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-12 | 2003-02-11 | 2003-08-13 | $7700.00 | Window Closed / Lapsed |