Ralph Hubert Peters
Philips
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Featured researches published by Ralph Hubert Peters.
electronic components and technology conference | 2012
Gordon Elger; Benno Spinger; Ralph Hubert Peters; Nils Benter; Harald Willwohl; Shinichi Honma; Ulrich Bohnenkamp; Alice Stolarski; Marten Sikkens; Albrecht Emmerich; Harry Gijsbers; Norbert Lesch
A high power LED platform for automotive front lighting is described. Based on small footprint ceramic LED packages customized designs can be realized in a highly flexible way. The diverse automotive applications have different requirements in terms of optical performance, i.e. assembly tolerance and package density, but also regarding the thermal performance of the boards, which are used as substrates for the LEDs. For a future design of a low beam function with a distributed multi cavity reflector concept the optical tolerances are evaluated which are required to form a beam which provides the sharp cut-off line needed to illuminate the road without glaring the oncoming traffic. For such optical concept an overall positioning tolerance below 100μm is required. The tolerances of the LED assembly process on advanced PCB solutions, including reflow soldering, are investigated and compared with alternative assembly solutions. Additionally, the thermal performance of the LED subassemblies is investigated by T3Ster measurements and finite element simulations. The advantage of special Cu-IMS is demonstrated compared to Fr4 based and Al-IMS solutions.
Archive | 2006
Harald Willwohl; Gerard Elders; Jan Reniers; Piet Van Der Wielen; Ralph Hubert Peters
Archive | 2003
Elmo Marcus Attila Diederiks; Erwin Rinaldo Meinders; Edwin Van Lier; Ralph Hubert Peters
Archive | 2005
Joseph Ludovicus Antonius Maria Sormani; Ralph Hubert Peters; Egbert Lenderink
Archive | 2007
Harald Willwohl; Ralph Hubert Peters; Pieter Johannes Wiskerke
Archive | 2006
Josef Andreas Schug; Peter Linssen; Ralph Hubert Peters
Archive | 2012
Merijn Keser; Wouter Oepts; Edwin Van Lier; Ralph Hubert Peters
Archive | 2007
Marco Van As; Ralph Hubert Peters
Archive | 2006
Ralph Hubert Peters; Marc Andre De Samber; Koen Van Os; Norbertus Antonius Maria Sweegers; Egbert Lenderink; Johannes A. A. M. Van Heeswijk; Johann-Josef Kohl
Archive | 2011
Ralph Hubert Peters; Nils Benter