公开(公告)号：US20150226389A1

公开(公告)日：2015-08-13

申请号：US14693909

申请日：2015-04-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIDEKI KASUGAI ,  KAZUHIKO YAMANAKA ,  KIYOSHI MORIMOTO

IPC: F21K99/00 ,  G03B21/20 ,  G02B5/30 ,  G02B27/14 ,  F21V9/16 ,  F21V14/08

CPC classification number: F21K9/64 ,  F21V9/30 ,  F21V14/08 ,  G02B5/3025 ,  G02B26/008 ,  G02B27/141 ,  G02B27/286 ,  G02B27/48 ,  G03B21/204 ,  G03B21/2073 ,  G03B33/08 ,  H04N9/3114 ,  H04N9/3158

Abstract: In a light source in which a semiconductor luminescence element and a phosphor are combined, red light having high color purity is efficiently radiated. The light source includes: a semiconductor luminescence element; a fixed or rotatable first wavelength converting unit; and a rotatable second wavelength converting unit. The second wavelength converting unit includes: a second wavelength converting region that absorbs output light emitted from the semiconductor luminescence element and radiates light having a second wavelength different from that of the output light; and a transmission region that transmits the output light. The first wavelength converting unit absorbs the output light to radiate light having a first wavelength longer than the second wavelength of the light, and the light having the first wavelength is transmitted through the transmission region.

Abstract translation: 在组合了半导体发光元件和荧光体的光源中，有效地照射具有高色纯度的红光。 该光源包括：半导体发光元件; 固定或可旋转的第一波长转换单元; 和可旋转的第二波长转换单元。 第二波长转换单元包括：第二波长转换区域，其吸收从半导体发光元件发射的输出光并且辐射具有与输出光的波长不同的第二波长的光; 以及透射输出光的透射区域。 第一波长转换单元吸收输出光以辐射具有比第二波长长的第一波长的光，并且具有第一波长的光透射通过透射区域。