公开(公告)号：US10914882B2

公开(公告)日：2021-02-09

申请号：US16134679

申请日：2018-09-18

Applicant: DELTA ELECTRONICS, INC.

Inventor： Yu-Nien Lin ,  Meng-Han Liu

IPC: G02B5/30 ,  H04N9/31

Abstract: A projection device includes a laser source and a birefringent depolarizer. The birefringent depolarizer is a single wedge shape and is arranged in front of a projection lens. The laser source is configured to emit a laser beam to penetrate the birefringent depolarizer to be a projection beam having multiple polarization patterns different from polarization patterns of the laser beam. The projection beam is projected onto a projection screen through the projection lens. The polarization patterns are multiple different polarization directions.

公开(公告)号：US11385530B2

公开(公告)日：2022-07-12

申请号：US16503489

申请日：2019-07-04

Applicant: DELTA ELECTRONICS, INC.

Inventor： Yu-Nien Lin ,  Yi-Chen Tsai

IPC: G03B21/14 ,  H04N9/31

Abstract: A projecting method includes: outputting, by a projection display apparatus, a projected image to a projection screen through a shifting device, wherein the projected image includes multiple frames; outputting, by a processing circuit, a control signal to drive the shifting device to rotate multiple first angles along a first axis or to rotate multiple second angles along a second axis, wherein combination of the first and the second angles corresponds to multiple projected positions; and when the projection display apparatus outputs multiple frames sequentially, rotating the shifting device sequentially according to the control signal to make multiple frames projected to the corresponding one of projected positions, wherein a number of the first angles or the second angles is at least four.

公开(公告)号：US11809069B2

公开(公告)日：2023-11-07

申请号：US17454050

申请日：2021-11-08

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chun-Hsien Lu ,  Yu-Nien Lin

IPC: G03B21/20 ,  G02B27/09 ,  H04N9/31

CPC classification number: G03B21/2033 ,  G02B27/0927 ,  H04N9/3161

Abstract: A coaxial laser light source apparatus includes at least one laser light source module, a beam homogenizer, and optical path adjusting elements. The laser light source module includes multiple laser light sources arranged along a first direction, and each of the laser light sources is configured to emit a laser light along a second direction. The first direction is substantially perpendicular to the second direction, and the laser lights have different properties. The laser lights travel along the second direction toward the beam homogenizer coaxially. The optical path adjusting elements are located between the laser light sources and the beam homogenizer, and the optical path adjusting elements are configured to adjust traveling directions of the laser lights.

公开(公告)号：US11460761B2

公开(公告)日：2022-10-04

申请号：US17012060

申请日：2020-09-04

Applicant: DELTA ELECTRONICS, INC.

Inventor： Yu-Nien Lin ,  Ming-Yo Hsu ,  Yi-Chen Tsai

IPC: G03B21/20 ,  G02B6/42

Abstract: An operation method of a remote laser projection device includes emitting a first light to an optical transmission module through at least one light source module; transmitting the first light to at least one projection head through the optical transmission module, wherein total light energy of the first light is allocated to the projection head through the optical transmission module, such that energy of a light transmitted to the projection device is E/N, and wherein E is total light energy of the at least one light module, and N is a number of the at least one projection device.