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Microelectronics International, vol. 17 no. 3
Type: Research Article
ISSN: 1356-5362

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Article
Publication date: 1 April 2003

67

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Microelectronics International, vol. 20 no. 1
Type: Research Article
ISSN: 1356-5362

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Article
Publication date: 1 September 2004

95

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Circuit World, vol. 30 no. 3
Type: Research Article
ISSN: 0305-6120

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Article
Publication date: 1 September 2000

93

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Assembly Automation, vol. 20 no. 3
Type: Research Article
ISSN: 0144-5154

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Article
Publication date: 1 December 2002

29

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Microelectronics International, vol. 19 no. 3
Type: Research Article
ISSN: 1356-5362

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Article
Publication date: 1 December 2002

34

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Microelectronics International, vol. 19 no. 3
Type: Research Article
ISSN: 1356-5362

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Article
Publication date: 1 December 1999

Duncan P. Hand, Chris Peters and Julian Jones

A robust and non‐intrusive focus control system for laser welding has been developed under a collaboration between GSI Lumonics (Rugby) and Heriot‐Watt University in…

Abstract

A robust and non‐intrusive focus control system for laser welding has been developed under a collaboration between GSI Lumonics (Rugby) and Heriot‐Watt University in Edinburgh, as part of the Laser Engineering for Manufacturing Applications Programme (LEMA), funded by EPSRC. It uses the light generated by the process, together with the chromatic aberrations of the focusing optics to determine the focal position of the laser relative to the workpiece. Successful closed loop operation has been demonstrated over a wide range of welding conditions, including different materials and laser powers.

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Sensor Review, vol. 19 no. 4
Type: Research Article
ISSN: 0260-2288

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Article
Publication date: 1 December 2000

90

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Aircraft Engineering and Aerospace Technology, vol. 72 no. 6
Type: Research Article
ISSN: 0002-2667

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Article
Publication date: 1 August 1999

57

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Microelectronics International, vol. 16 no. 2
Type: Research Article
ISSN: 1356-5362

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Article
Publication date: 1 December 2001

24

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Soldering & Surface Mount Technology, vol. 13 no. 3
Type: Research Article
ISSN: 0954-0911

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