公开(公告)号：US09976879B2

公开(公告)日：2018-05-22

申请号：US15014193

申请日：2016-02-03

Applicant: DELTA ELECTRONICS, INC.

Inventor： Meng-Sheng Chang ,  Keh-Su Chang ,  Hui-Hsiung Wang ,  Ching-Chao Chen

IPC: G01D5/34 ,  G01D5/347 ,  G01P3/36

CPC classification number: G01D5/3473 ,  G01P3/36

Abstract: A color wheel rotation speed detecting module is disclosed and includes a color wheel, a motor, a rotation speed detector and a processor. The color wheel includes a first segment and at least one second segment. The motor drives the color wheel to rotate. The rotation speed detector includes an emitter and a receiver. The emitter outputs a light signal to the first segment or the second segment of the color wheel when the color wheel is rotated. When the receiver receives the light signal reflected from the second segment, the receiver outputs a detecting signal correspondingly. When the light signal passes through the first segment and the receiver fails to receive the light signal, the receiver interrupts the output of the detecting signal. The processor receives the detecting signal from the receiver, and obtains the rotating speed of the color wheel according to the detecting signal varied with time.

公开(公告)号：US11835771B2

公开(公告)日：2023-12-05

申请号：US17371128

申请日：2021-07-09

Applicant: DELTA ELECTRONICS, INC.

Inventor： Ching-Chao Chen ,  Chia-Sheng Yeh ,  Wei-Kuang Ying ,  Fu-Jen Chiang

IPC: G02B6/38 ,  G03B21/00

CPC classification number: G02B6/3817 ,  G02B6/3825 ,  G02B6/3893 ,  G03B21/005

Abstract: An optical fiber mounting mechanism includes an optical fiber, a signal circuit, and a mounting structure. The optical fiber extends along a first direction. The signal circuit extends along the first direction. The mounting structure is disposed at ends of the optical fiber and the signal circuit. The mounting structure surrounds the optical fiber and the signal circuit. The mounting structure has an installation portion. The installation portion extends radially relative to the first direction as the axis direction. The installation portion has a plurality of elements. The elements are exposed from a surface of the installation portion. The surface has a normal direction parallel with the first direction.

公开(公告)号：US12181714B2

公开(公告)日：2024-12-31

申请号：US18494776

申请日：2023-10-26

Applicant: DELTA ELECTRONICS, INC.

Inventor： Ching-Chao Chen ,  Chia-Sheng Yeh ,  Wei-Kuang Ying ,  Fu-Jen Chiang

IPC: G02B6/38 ,  G03B21/00

Abstract: A projection device includes multiple optical fiber mounting mechanisms. Each of the optical fiber mounting mechanisms includes an optical fiber extending along a first direction as an axis direction, a signal circuit extending along the first direction, and a mounting structure. The optical fiber includes an engaging section. The mounting structure surrounds the engaging section of the optical fiber and the signal circuit. The mounting structure includes an installation portion extending radially relative to the first direction. The installation portion includes a surface and multiple elements exposed from the surface. The surface includes a normal direction parallel with the first direction. A first length of the engaging section of the optical fiber protruding from the surface of the installation portion is longer than lengths of the elements protruding from the surface.