公开(公告)号：US20240094615A1

公开(公告)日：2024-03-21

申请号：US18318736

申请日：2023-05-17

申请人： Qisda Corporation

发明人： Chih-Shiung Chien ,  Ming-Kuen Lin ,  Tsung-Hsun Wu

IPC分类号： G03B21/20

CPC分类号： G03B21/2066 ,  G03B21/2013 ,  G03B21/2033 ,  G03B21/208

摘要： An illumination system including a first light-emitting unit, a first reflector, a second light-emitting unit, and a second reflector is provided. The first light-emitting unit is configured to emit a first light beam, and the first reflector is configured to reflect the first light beam toward a first direction. The second light-emitting unit is configured to emit a second light beam, and the second reflector is configured to reflect the second light beam toward the first direction. The first reflector and the second reflector are arranged in a second direction. For a view seeing along the second direction, the first reflector and the second reflector form a cross shape. The second direction is perpendicular to the first direction. A projection apparatus is also provided.

公开(公告)号：US11886104B2

公开(公告)日：2024-01-30

申请号：US17585675

申请日：2022-01-27

申请人： Qisda Corporation

发明人： Peng Lee ,  Tsung-Hsun Wu ,  Ching-Tze Huang ,  Jia-Ming Zhang

IPC分类号： G03B33/08 ,  G03B21/20 ,  G02B26/00

CPC分类号： G03B33/08 ,  G02B26/008 ,  G03B21/204

摘要： A light source system includes a first light emitter configured to emit a first light with a first color band in a first time interval of a time period, a second light emitter configured to emit a second light with a second color band in a second time interval of the time period rather than in the rest of the time period other than the second time interval, and a light guide disposed downstream from the first light emitter and the second light emitter. The first time interval and the second time interval overlap in an overlapping time interval. The first light emitter and the second light emitter synchronously emit the first light and the second light in the overlapping time interval to form a combined light beam in the light guide. The light with the second color band is dominant of the combined light beam.

公开(公告)号：US11619366B2

公开(公告)日：2023-04-04

申请号：US17575722

申请日：2022-01-14

申请人： Qisda Corporation

发明人： Chih-Shiung Chien ,  Ming-Kuen Lin ,  Tsung-Hsun Wu

IPC分类号： F21V9/30 ,  G02B19/00 ,  G02B26/00 ,  G02B27/14

摘要： A light source module includes a light source, a dichroic unit, a color wheel and a wavelength conversion unit. The light source is configured to emit a light. The dichroic unit is opposite to the light source and configured to reflect a portion of the light as a first illumination light in a first direction and reflect a portion of the light as a second illumination light in a second direction inverse to the first direction. The color wheel is opposite to the dichroic unit and configured to at least receive the first illumination light. The color wheel has a blue filter area, a green filter area and a red filter area. The wavelength conversion unit is opposite to the color wheel and the dichroic unit and configured to at least receive the second illumination light and provide a converted light to the color wheel.

公开(公告)号：US11531259B2

公开(公告)日：2022-12-20

申请号：US17191738

申请日：2021-03-04

申请人： QISDA CORPORATION

发明人： Chun-Hao Hu ,  Tsung-Hsun Wu ,  Ching-Shuai Huang ,  Ping-Chung Chou

IPC分类号： G03B21/20 ,  G02B26/00 ,  H04N9/31 ,  G03B33/12

摘要： A laser projector includes a laser source, a first dichroic mirror, a wavelength conversion module, a second dichroic mirror, a first, a second and a third light valves and a beam combiner. The laser source is for providing a blue beam including a first portion and a second portion. The first dichroic mirror is for receiving and allowing the blue beam to penetrate. The wavelength conversion module is for receiving the first portion and emitting a yellow beam to the first dichroic mirror. The second dichroic mirror is for receiving and separating the yellow beam reflected by the first dichroic mirror into a green and a red beam. The first, second and third light valve are for receiving and modulating respectively the second portion of the blue beam, the green beam and the red beam. The beam combiner is for the beams to form a multi-color image.

公开(公告)号：US20220004093A1

公开(公告)日：2022-01-06

申请号：US17352391

申请日：2021-06-21

申请人： QISDA CORPORATION

发明人： Chih-Shiung Chien ,  Ming-Kuen Lin ,  Tsung-Hsun Wu

IPC分类号： G03B33/12 ,  G03B21/20

摘要： A projector includes a light source module, a collimator lens module, a wavelength conversion module, a first dichroic unit and a second dichroic unit. The light source module provides a first beam. The collimator lens module has a first part and a second part. The first beam passes the first part. The wavelength conversion module receives the first beam and includes a reflecting plate and a wavelength conversion layer. The first dichroic unit reflects the first beam. The reflecting plate reflects the first beam to generate a second beam passing the second part. The wavelength conversion layer is excited by the first beam to generate a third beam. The second dichroic unit allows passing of the third beam and a part of the second beam to generate a fourth beam, and reflects the other part of the second beam to generate a fifth beam.

公开(公告)号：US11199763B2

公开(公告)日：2021-12-14

申请号：US16984106

申请日：2020-08-03

申请人： QISDA CORPORATION

发明人： Chih-Shiung Chien ,  Ming-Kuen Lin ,  Tsung-Hsun Wu

IPC分类号： G03B21/20 ,  G02B26/00

摘要： A projector includes a light source, a collimator lens, a wavelength conversion module and a dichroic filter. The light source provides a first beam. The collimator lens has a first portion and a second portion. The wavelength conversion module includes a reflecting plate and a wavelength conversion layer. The wavelength conversion layer is an annular structure disposed on the reflecting plate. The dichroic filter corresponds to the first portion of the collimator lens. The dichroic filter reflects the first beam to project onto the reflecting plate and the wavelength conversion layer. A second beam reflected by the reflecting plate passes through the second portion of the collimator lens. A third beam excited by the wavelength conversion layer passes through the first portion and the second portion of the collimator lens and the dichroic filter.

公开(公告)号：US20210204378A1

公开(公告)日：2021-07-01

申请号：US17030413

申请日：2020-09-24

申请人： QISDA CORPORATION

发明人： Tsung-Hsun Wu ,  Chi-Jen Chen ,  Yuan-Ting Fang

IPC分类号： H05B47/10

摘要： A light intensity adjustment circuit includes a delay circuit, a switching circuit and a light-emitting circuit. The delay circuit includes a capacitor and is used to receive a first pulse width modulation signal and generate a delay signal according to the first pulse width modulation signal. The switching circuit includes a switching unit and an isolation circuit. The switching unit includes a control terminal coupled to the delay circuit and used to receive the delay signal, and a first terminal used to generate a current according to the delay signal. The isolation circuit is coupled to the first terminal of the switching unit and generate a second pulse width modulation signal according to the current. The light-emitting circuit is used to receive the second pulse width modulation signal and emit light accordingly.

公开(公告)号：US11042080B2

公开(公告)日：2021-06-22

申请号：US16912472

申请日：2020-06-25

申请人： Qisda Corporation

发明人： Wen-Yao Lin ,  Tsung-Hsun Wu ,  Ching-Shuai Huang

IPC分类号： G03B21/20 ,  G02B27/14

摘要： A light source module includes first to third light sources respectively providing first, second and third lights, first and second wavelength conversion layers, first and second auxiliary light sources respectively providing first and second auxiliary lights, and a dichroic member. The first wavelength conversion layer is excited by the first light and the first auxiliary light from different sides to generate a first conversion light. The second wavelength conversion layer is excited by the second light and the second auxiliary light from different sides to generate a second conversion light. The dichroic member allows the first and second auxiliary lights to transmit therethrough and reflects the first and second conversion lights. The third light transmits through the dichroic member. The first and second conversion lights and the third light are different in wavelength ranges and combined to form an illumination light.

公开(公告)号：US10911729B2

公开(公告)日：2021-02-02

申请号：US16854826

申请日：2020-04-21

申请人： QISDA CORPORATION

发明人： Tsung-Hsun Wu ,  Wei-Chun Chang

IPC分类号： H04N9/31 ,  G08C17/02

摘要： An imaging system includes an image combiner, at least one reflecting mirror, an image generating device, a communication module and a distance sensor. The at least one reflecting mirror is disposed with respect to the image combiner. The image generating device is disposed with respect to the at least one reflecting mirror. When the image generating device displays an image, a light projected by the image generating device is reflected by the at least one reflecting mirror to the image combiner, so as to form a virtual image through the image combiner. The distance sensor senses a distance between an object and the imaging system and transmits the distance to the image generating device through the communication module. When the image generating device determines that the distance is larger than a predetermined threshold, the image generating device adjusts a display size of the image according to the distance.

公开(公告)号：US20200345450A1

公开(公告)日：2020-11-05

申请号：US16830305

申请日：2020-03-26

申请人： QISDA CORPORATION

发明人： Tsung-Hsun Wu ,  Ming-Kuen Lin ,  Hung-Wen Liu

IPC分类号： A61B90/00

摘要： An imaging system includes an image generating device and two reflecting mirrors. The image generating device projects a light toward a gravity direction. The two reflecting mirrors are disposed with respect to each other and one of the two reflecting mirrors is disposed with respect to the image generating device. The light projected by the image generating device forms a virtual image through the two reflecting mirrors in sequence.