公开(公告)号：US20160069538A1

公开(公告)日：2016-03-10

申请号：US14755378

申请日：2015-06-30

Applicant: DELTA ELECTRONICS, INC.

Inventor： Keh-Su Chang ,  Jau-Shiu Chen ,  Yen-I Chou ,  Chi Chen

IPC: F21V13/08 ,  F21V14/08 ,  G02B26/00

CPC classification number: F21V13/08 ,  F21V14/08 ,  G02B26/008 ,  H01L33/50

Abstract: A wavelength-converting device used for converting first waveband light includes a transmissive substrate, a phosphor layer and an optical layer. The transmissive substrate has a refraction coefficient ns, the refraction coefficient ns is greater than an environmental refraction coefficient namb. The phosphor layer is disposed over a side of the transmissive substrate for converting the first waveband light into second waveband light. The optical layer is disposed over the other side of the transmissive substrate opposite to the phosphor layer for reflecting the second waveband light. The optical layer has an effective refraction coefficient nr. The relation between ns, namb and nr is given by nr>2(namb2)/ns. As a result, the light leakage is avoided, the fabrication is simplified, and the difficulty of material selection is reduced.

Abstract translation: 用于转换第一波段光的波长转换装置包括透射基板，荧光体层和光学层。 透射基板具有折射系数ns，折射系数ns大于环境折射系数namb。 磷光体层设置在透射基板的一侧，用于将第一波段光转换成第二波段光。 光学层设置在与磷光体层相对的透射基板的另一侧上，用于反射第二波段光。 光学层具有有效的折射系数nr。 ns，namb和nr之间的关系由nr> 2（namb2）/ ns给出。 结果，避免了光泄漏，简化了制造，减少了材料选择的难度。

公开(公告)号：US09891511B2

公开(公告)日：2018-02-13

申请号：US14686321

申请日：2015-04-14

Applicant: DELTA ELECTRONICS, INC.

Inventor： Keh-Su Chang ,  Yen-I Chou ,  Chi Chen ,  Jau-Shiu Chen ,  Meng-Han Liu

IPC: G03B21/20 ,  G03B21/16 ,  H01L33/50 ,  C09K11/02

CPC classification number: G03B21/204 ,  C09K11/02 ,  C09K11/08 ,  G03B21/16 ,  H01L33/507

Abstract: An illumination system includes a solid-state light-emitting element and a wavelength-converting device. A first waveband light is emitted to an optical path by the solid-state light-emitting element. The wavelength-converting device is disposed on the optical path and includes a phosphor plate. The phosphor plate is a solid mixture having a phosphor agent and a binder. The weight percent of the phosphor agent is from 10 to 70, such that the first waveband light is transformed into a second waveband light. Under this circumstance, the efficiency of heat conduction of the phosphor plate is effectively enhanced, thereby enhancing the converting efficiency of the wavelength-converting device, which is strong enough to be applied to rotate with great rigidity. Meanwhile, not only the space requirement is reduced, but also the phenomena of hot spot and heat diffusion are avoided, such that the cost and difficulty of manufacturing the wavelength-converting device are significantly reduced.