EP0128107A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus and method for automatic inspection of printed circuit boards
Assignee: Optrotech Ltd
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Filing: 1984-05-02
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Granted: —
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Expires: 2004-05-02
Abstract
Abstract Printed circuit board testing apparatus comprising a testing location (10) for a printed circuit board (12) to be tested, high speed scanning apparatus (18) for providing a scanned energy input to conductive locations on the printed circuit board (12) and electron collecting apparatus for sensing the charged state of scanned conductive locations scanned by the scanning apparatus (18).
Inventors
- 👤 Shlomo Dr. Barak
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 00:54
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/28; G01R31/302; G01R31/304
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
53 words
Printed circuit board testing apparatus comprising: a testing location for a printed circuit board to be tested; high speed scanning apparatus for providing a scanned energy input to conductive locations on the printed circuit board; and electron collecting apparatus for sensing the electrical potential of scanned conductive locations scanned by the scanning apparatus.
Claim 2
Dependent Claim
53 words
Printed circuit board testing apparatus comprising: a testing location for a printed circuit board to be tested; high speed scanning apparatus for providing a scanned energy input to conductive locations on the printed circuit board; and electron collecting apparatus for sensing the electrical potential of scanned conductive locations scanned by the scanning apparatus.
Claim 3
Dependent Claim
43 words
Printed circuit board testing apparatus according to claim 1 and also comprising correlating apparatus for correlating information relating to the electrical potential of the scanned conductive locations for providing an output indication of conduction between sets of scanned locations on the circuit board.
Claim 4
Dependent Claim
32 words
Printed circuit board testing apparatus according to claim 2 and also comprising comparison apparatus for comparing the output indication of conduction with a predetermined reference indication corresponding to a master circuit board.
Claim 5
Dependent Claim
31 words
Printed circuit board testing apparatus according to any of the preceding claims and also comprising means for providing at least one predetermined electrical input to the printed circuit board being tested.
Claim 6
Dependent Claim
55 words
Printed circuit board testing apparatus according to claim 4 and wherein said electrical input providing means provides at least one time varying electrical input to the printed circuit board and said correlating apparatus provides a plurality of output indications each corresponding to a different state of the electrical input supplied to the printed circuit board.
Claim 7
Dependent Claim
21 words
Printed circuit board testing apparatus according to any of the preceding claims and wherein said scanning apparatus comprises optical scanning means.
Claim 8
Dependent Claim
19 words
Printed circuit board testing apparatus according to claim 6 and wherein said optical scanning means comprises UV scanning means.
Claim 9
Dependent Claim
24 words
Printed circuit board testing apparatus according to any of the preceding claims 1 to 5 and wherein said scanning apparatus comprises electron scanning means.
Claim 10
Dependent Claim
22 words
Printed circuit board testing apparatus according to any of the preceding claims and wherein said testing location comprises a sub-atmospheric pressure enclosure.
Claim 11
Dependent Claim
7 words
Apparatus substantially as shown and described hereinabove.
Claim 12
Dependent Claim
7 words
Apparatus substantially as shown and described hereinabove.
Claim 13
Dependent Claim
9 words
Apparatus substantially as illustrated in any of the drawings.
Claim 14
Dependent Claim
9 words
Apparatus substantially as illustrated in any of the drawings.
References Cited (Backward Citations)
DE2309371A1
Cited
DE2700252A1
Cited
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