公开(公告)号：US12292676B2

公开(公告)日：2025-05-06

申请号：US18047645

申请日：2022-10-18

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chih-Hao Lin

IPC: G03B21/20

Abstract: An illumination system for a projector includes a light engine module, a light source module, a reflective mirror, a beam splitter, a phosphor wheel, and a lens assembly. The light source module can emit blue light along a first direction. The reflective mirror may reflect the blue light such that the blue light transmits in a second direction. A reflective region of the phosphor wheel can reflect a first portion of the blue light, and a first wavelength conversion region of the phosphor wheel can to activate a second portion of the blue light to form first band light. The lens assembly is configured to allow the first band light to pass through. The reflective region of the beam splitter is configured to reflect the first portion of the blue light and the first band light to the light engine module along the first direction.

公开(公告)号：US11892158B2

公开(公告)日：2024-02-06

申请号：US17934579

申请日：2022-09-23

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chih-Hao Lin

IPC: F21V9/30 ,  G02B27/10 ,  G02B19/00 ,  F21Y115/30

CPC classification number: F21V9/30 ,  G02B19/0057 ,  G02B27/10 ,  F21Y2115/30

Abstract: A light source device includes first and second laser light sources, a wavelength conversion unit, a light condensing module, a light combining member, and light guiding members. The first laser light source is configured to emit a first light beam along a first axis. The second laser light source is arranged along the second axis with the first laser light source and configured to emit a second light beam along the first axis. The wavelength conversion unit is configured to convert the second light beam into a color light. The condensing module is configured to condense the color light. The light combining member is configured to receive the first light beam and the color light. The light guiding members are configured to guide at least one of the first light beam and the color light.

公开(公告)号：US11579460B2

公开(公告)日：2023-02-14

申请号：US17336273

申请日：2021-06-01

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chih-Hao Lin

IPC: G03B21/20 ,  G02B5/02 ,  G02B27/48 ,  G02B26/02

Abstract: A laser despeckle device includes a light source, a despeckle element, and a plurality of optical transmission modules. The light source is configured to emit a laser light. The despeckle element is disposed along the optical axis of the laser light. The optical transmission modules alternatively disposed at two opposite sides of the despeckle element.