公开(公告)号：US11681208B2

公开(公告)日：2023-06-20

申请号：US17309850

申请日：2019-10-30

Applicant: LG ELECTRONICS INC.

Inventor： Jaehoon Ahn ,  Kiso Bok

IPC: G03B21/14 ,  G02B7/02

CPC classification number: G03B21/142

Abstract: The present invention relates to a projector comprising: a housing; a projection part for projecting an image; a projection lens module for expanding and projecting, on an outside screen, the image projected from the projection part; and a position adjustment part for controlling the positions of a first direction and a second direction of the projection lens module. The position adjustment part comprises: a first fixed bracket fixed to the housing and comprising an opening part through which a projection lens passes; a first moving bracket positioned on one surface of the fixed bracket and enclosing the circumference of the projection lens; a second moving bracket positioned on one surface of the first moving bracket and enclosing the circumference of the projection lens; a screw coupled to the first moving bracket in the first direction; a first dial exposed to the outer side by being coupled to the end part of the screw; a second dial positioned in a ring-shape on the circumference of the first dial; and a gear module for moving the second moving bracket in the second direction when the second dial rotates.

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.