Linear lighting device for e.g. in optical examination of laminar glass substrate, has converter device converting lights rays coming parallel from LEDs into light rays whose angular distribution is mixed in imaginary plane

摘要

The device (1) has a set of LEDs (5) i.e. surface mount device component, arranged next to each other on a flat carrier i.e. printed circuit board (3), along a line in series. A converter device extends and stretched along the line. The converter device converts lights rays coming parallel from the LEDs into light rays whose angular distribution is mixed in an imaginary plane by a set of diffractive, scattering, breaking or fluorescent elements in the imaginary plane, where the plane extends along the line and perpendicular to the carrier. An independent claim is also included for an inspection device comprising a line camera.