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Patent Searching and Data


Title:
LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2016014632
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting device capable of obtaining light suitable for detecting a flaw or a foreign object of an inspection object by easier adjustment than that by conventional lighting devices while maintaining high directivity.SOLUTION: A plurality of light-emitting elements 2 are linearly arranged on a substrate 3 at positions misaligned from central axes of a plurality of lenses 4, respectively, and the lenses 4 are provided in front of the respective light-emitting elements 2 in parallel in the same direction as an arrangement direction of the light-emitting elements 2 so as to transmit light rays emitted from the light-emitting elements 2. The lenses 4 are provided in the direction in which the light rays emitted from the respective light-emitting elements 2 can be collimated or condensed in the arrangement direction of the light-emitting elements 2. The lenses 4 are set movable in the arrangement direction of the light-emitting elements 2 so as to radiate the light rays transmitted by the lenses 4 at arbitrary angles and a positional relation between the lenses 4 and the respective light-emitting elements 2 is adjusted.

Inventors:
ITO KATSUHIRO
Application Number:
JP2014137912A
Publication Date:
January 28, 2016
Filing Date:
July 03, 2014
Export Citation:
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Assignee:
NISSEI ELECTRIC CO LTD
International Classes:
G01N21/84; F21K9/00; F21S2/00; F21V5/04; F21V11/08; F21V13/12; F21V14/06; G02B3/00; G02B3/08; G02B5/00