公开(公告)号：US20170256690A1

公开(公告)日：2017-09-07

申请号：US15506663

申请日：2015-08-26

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Floris Maria Hermansz Crompvoets ,  Benno Spinger ,  Pascal Bloemen ,  Norbertus Antonius Maria Sweegers ,  Marc Andre de Samber

IPC: H01L33/60 ,  H01L33/50 ,  H01L33/46

CPC classification number: H01L33/60 ,  H01L33/46 ,  H01L33/502 ,  H01L33/58 ,  H01L51/5271 ,  H01L2933/0025 ,  H01L2933/0058

Abstract: There is proposed a light source comprising: a semiconductor diode structure adapted to generate light; and an optical enhancement section above the semiconductor diode structure and adapted to output light from the semiconductor diode structure. A partially-reflective layer covers at least a portion of the top of the optical enhancement section and is adapted to reflect a portion of the output light towards the optical enhancement section. The partially-reflective layer has a light transmittance characteristic that varies laterally.

公开(公告)号：US20170329071A1

公开(公告)日：2017-11-16

申请号：US15590386

申请日：2017-05-09

Applicant: Koninklijke Philips N.V.

Inventor： Pascal Bloemen ,  Maarten van-Lierop ,  Rick Nijkamp ,  Mark Steltenpool ,  Hugo Cornelissen

IPC: F21V8/00 ,  F21V7/00

CPC classification number: G02B6/0038 ,  F21V7/0016 ,  F21V7/0033 ,  G02B6/0016 ,  G02B6/0046 ,  G02B19/0028 ,  G02B19/0061 ,  G02B19/0066 ,  H01L33/58 ,  H01L2933/0058

Abstract: A primary optic for a light-emitting diode or device (LED) includes a tilted wedge atop a truncated compound parabolic concentrator (CPC). The CPC includes an input face and a lower exterior surface defined by a tilted parabolic segment rotated about an axis. The bottom end of the lower exterior surface joins the perimeter of the input face. The tilted wedge includes an upper exterior surface above the lower exterior surface, and an interior conical surface surrounded by the lower and the upper exterior surfaces. The upper exterior surface is defined by a tilted straight line rotated about the axis. The interior conical surface is defined by a smooth curve rotated about the axis. The interior conical surface has a vertex located at the axis and within the lower exterior surface. The top ends of the interior conical surface and the upper exterior surface join to define an output aperture.