公开(公告)号：US10274815B2

公开(公告)日：2019-04-30

申请号：US15639621

申请日：2017-06-30

Applicant: LG ELECTRONICS INC.

Inventor： Shingyu Kang ,  Heechul Shin ,  Junho Jeong

IPC: G03B21/14 ,  G03B21/20 ,  G03B33/08

Abstract: A projector is provided. The projector includes: a fluorescent wheel; at least one first light source that emits light toward the fluorescent wheel; and a fly eye lens that uniformalizes light, having transmitted the fluorescent wheel. Therefore, a fly eye lens is used instead of a light tunnel and a transmissive fluorescent wheel is used and thus it is unnecessary to divide a lens configuration of transmitting light and reflecting light. Accordingly, the number of optical systems can be reduced and thus efficiency of a projector can be enhanced and a size and production cost of the projector can be reduced.

公开(公告)号：US11966152B2

公开(公告)日：2024-04-23

申请号：US17417353

申请日：2019-10-07

Applicant: LG ELECTRONICS INC.

Inventor： Shingyu Kang ,  Kiso Bok ,  Jaehoon Ahn

IPC: G03B21/20 ,  G02B5/26

CPC classification number: G03B21/204 ,  G02B5/26 ,  G03B21/2066

Abstract: A projector comprises: a light source that projects laser light; a first color filter including a reflective portion reflecting the laser light emitted from the light source, and a transmissive portion transmitting the laser light; a phosphorus plate that converts the laser light reflected from the first color filter into phosphorescent light; a second color filter including color films of different colors through which the phosphorescent light transmits; and a display element that is provided with the laser light transmitted from the first color filter and the phosphorescent light transmitted through the second color filter so as to project an image, wherein the projector can be reduced in volume since the number of lenses used in an optical system can be reduced by shortening an optical path.