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Title:
LED LIGHTING ARRANGEMENT
Document Type and Number:
Japanese Patent JP2018156939
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting arrangement with improved thermal stability for positioning of an optical element having relatively low temperature sensitivity over a wide range of operating conditions even for significant mismatches of coefficients of thermal expansion of materials.SOLUTION: A holder comprises an optical sub-holder 51 and a connecting sub-holder 52 connecting the optical sub-holder 51 with a support member 3, and an LED lighting element disposed on the support member. The optical sub-holder 51 comprises at least one stress release element 6 dividing the optical sub-holder 51 in one or more outer part 511 connected to the connecting sub-holder 52 and a main part 512 carrying an optical element 4. A mechanical connection between the main part and the at least one outer part is weakened by the stress release element 6 extending through the optical sub-holder 51 to enable the at least one outer part 511 to deform freely in the case of thermal stress while maintaining a main part position of the main part 512 being closer to a desired position compared to an outer part position of the one or more outer part 511.SELECTED DRAWING: Figure 2

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Inventors:
FLORENT MONESTIER
BENNO SPINGER
Application Number:
JP2018046373A
Publication Date:
October 04, 2018
Filing Date:
March 14, 2018
Export Citation:
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Assignee:
LUMILEDS HOLDING BV
International Classes:
F21V15/01
Domestic Patent References:
JP2010530125A2010-09-02
JP2016092271A2016-05-23
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki