公开(公告)号：US11714343B2

公开(公告)日：2023-08-01

申请号：US17159111

申请日：2021-01-26

Applicant: Coretronic Corporation

Inventor： Jui Chang

IPC: G03B21/20

CPC classification number: G03B21/2033 ,  G03B21/208 ,  G03B21/2066

Abstract: An illumination system includes first laser light sources, second laser light sources, an optical module, and a light homogenizing element. The first and second laser light sources respectively provide first and second beams. A light spot area formed when the second beams are emitted is different from that formed when the first beams are emitted. The optical module converts the first beams into spot-expanding beams which form a light spot area different from that of the first beams. The light homogenizing element includes a light incident face disposed on transmission paths of the second beams and the spot-expanding beams. A difference between light spot areas formed by the second beams and the spot-expanding beams on the light incident face is less than a difference between light spot areas formed when the second beams and the first beams are emitted. A projection apparatus having the illumination system is further disclosed.

公开(公告)号：US11711498B2

公开(公告)日：2023-07-25

申请号：US17106104

申请日：2020-11-28

Applicant: NANHUA INTELLIGENT PRECISION MACHINE (SHENZHEN) CO., LTD.

Inventor： Hanwen Guo

IPC: H04N9/31 ,  G02F1/1335 ,  G03B21/20

CPC classification number: H04N9/3167 ,  G02F1/133528 ,  G03B21/2033 ,  G03B21/2066 ,  G03B21/2073

Abstract: An efficient conjugate lighting system for an LCD projector, includes an LED light source, a square cone condenser, a collimating lens, a quarter-wave plate, a brightness-enhancing polarizer, an LCD light valve, a field lens and a projection lens which are provided in sequence according to a direction of light travel; wherein the efficient conjugate lighting system for the LCD projector further comprises a reflecting mirror provided at an entrance port of the square cone condenser; a light-transmitting surface of the entrance port of the square cone condenser is bisected along a horizontal centerline or a vertical centerline to form a first sub-light-transmitting surface and a second sub-light-transmitting surface; a light-emitting surface of the LED light source is provided on the first sub-light-transmitting surface, and the reflector is provided on the second sub-light-transmitting surface.

公开(公告)号：US11703692B2

公开(公告)日：2023-07-18

申请号：US17453857

申请日：2021-11-08

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chun-Hsien Lu

IPC: G02B27/28 ,  G03B21/62 ,  G03B21/20

CPC classification number: G02B27/286 ,  G03B21/2033 ,  G03B21/62

Abstract: A laser light source depolarizer includes a laser light source, a light angle adjusting element, a birefringent crystal, and an integration rod. The laser light source is configured to emit a laser light. The light angle adjusting element is configured to change the diffusion angle of the laser light. The light angle adjusting element is disposed between the laser light source and the birefringent crystal. The birefringent crystal is disposed between the light angle adjusting element and the integration rod, and the birefringent crystal is configured to break the polarity of the laser light.

公开(公告)号：US20230194259A1

公开(公告)日：2023-06-22

申请号：US18110205

申请日：2023-02-15

Applicant: VIRTEK VISION INTERNATIONAL INC

Inventor： Kurt D. Rueb

IPC: G01C11/02 ,  G01B11/14

CPC classification number: G01C11/02 ,  G01B11/14 ,  G03B21/2033

Abstract: A method and system for controlling projection of optical indicators on a worksurface is disclosed. A projection device for projecting a first optical indicator and a second optical indicator onto a worksurface is provided. A measurement system monitors a work area in which the worksurface is disposed. The measurement system locates a control object within the work area and identifies a marker disposed on the control object. The measurement system monitors a first disposition and a second disposition of the control object. The projection device projects the first optical indicator onto the worksurface and the projection device projects the second optical indicator onto the worksurface in response to manipulation of the control object between the first disposition and the second disposition as detected by said measurement system.

公开(公告)号：US11681210B2

公开(公告)日：2023-06-20

申请号：US17446104

申请日：2021-08-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Tomoko Akagawa ,  Koichi Akiyama ,  Katsuyuki Uehara

IPC: G03B21/20

CPC classification number: G03B21/206 ,  G03B21/2033 ,  G03B21/2066

Abstract: An illuminator includes a light source that outputs first light having a first wavelength band, a wavelength converter that converts the first light into second light having a second wavelength band different from the first, a first optical element that reflects part of the first light to cause the reflected first light to be incident on the wavelength converter and transmits the other part of the first light and the second light, and a second optical element that reflects the other part of the first light having the first wavelength band and passing through the first optical element, the direction of the reflected light being the traveling direction of the second light having the second wavelength band and passing through the first optical element, and transmits the second light having the second wavelength band and emitted from the wavelength converter.

公开(公告)号：US11662599B2

公开(公告)日：2023-05-30

申请号：US17227398

申请日：2021-04-12

Applicant: Coretronic Corporation

Inventor： Chien-Chung Liao ,  Hung-Wei Liu

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

CPC classification number: G02B27/48 ,  G02B5/0278 ,  G03B21/208 ,  G03B21/2013 ,  G03B21/2033

Abstract: The invention provides an illumination system and a projection device with the illumination system. The illumination system is configured to provide an illumination beam, and includes a coherent light source, a first and a second optical module, a first and a second diffuser element. A coherent beam emitted by the coherent light source is focused on a first position through the first optical module, and the first diffuser element is located at or near the first position. The coherent beam from the first diffuser element is focused on a second position through the second optical module. The second diffuser element is located on a transmission path of the coherent beam from the second optical module, and located at or near the second position. The coherent beam sequentially passes through the first diffuser element, the second optical module and the second diffuser element to form the illumination beam.

公开(公告)号：US11662598B2

公开(公告)日：2023-05-30

申请号：US16769935

申请日：2018-11-27

Applicant: SHANGHAI FEIBO LASER TECHNOLOGIES CO., LTD.

Inventor： Xiaojun Li ,  Wentao Li ,  Jie Wu

IPC: G02B27/48 ,  G02B5/02 ,  C03B25/00 ,  C03B32/02 ,  C03B37/025 ,  G03B21/20

CPC classification number: G02B27/48 ,  C03B25/00 ,  C03B32/02 ,  C03B37/025 ,  G03B21/208 ,  G03B21/2013 ,  G03B21/2033

Abstract: Disclosed in the present invention is a beam coherence eliminating element. The optical medium material of the element comprises microcrystalline glass, wherein microcrystalline particles therein have a size of 0.1-1000 nm and are distributed randomly. As the crystals in the microcrystalline glass can change the phase of light beams, the microcrystalline glass can change the phase of the light beams randomly, thereby eliminating the coherence of the beams. The crystal size of the microcrystalline glass is small, and thus does not affect the transmission efficiency of light beams. The element of the present invention has a simple structure and is convenient to use, and can be added in the process of beam transmission to easily eliminate beam coherence.

公开(公告)号：US20230152678A1

公开(公告)日：2023-05-18

申请号：US17917924

申请日：2021-03-18

Applicant: ams-OSRAM International GmbH

Inventor： Laura KREINER ,  Britta GOEOETZ

IPC: G03B21/20 ,  G03B33/12

CPC classification number: G03B21/2033 ,  G03B21/2066 ,  G03B33/12

Abstract: A radiation-emitting device includes an optoelectronic component for emitting first electromagnetic radiation. The radiation-emitting device also includes a conversion element having an entrance surface and an exit surface. The radiation-emitting device further includes a dielectric mirror on the exit surface. The radiation-emitting device is configured such that first radiation emitted by the component during operation enters the conversion element via the entrance surface. The conversion element is configured for converting the first radiation into second electromagnetic radiation, which subsequently exits the conversion element via the exit surface. The dielectric mirror is transmissive to second radiation that is incident at angles of incidence in a predefined first angle range, and is reflective for second radiation that is incident at angles of incidence in a predefined second angle range.

公开(公告)号：US11644360B2

公开(公告)日：2023-05-09

申请号：US17095078

申请日：2020-11-11

Applicant: LITE-ON OPTO TECHNOLOGY (CHANGZHOU) CO., LTD. ,  LITE-ON TECHNOLOGY CORPORATION

Inventor： Bo-Jhih Chen ,  Zi-Jun Lin ,  Kuo-Ming Chiu ,  Yung-Chang Jen ,  Meng-Sung Chou ,  Chang-Hung Hsieh

IPC: G01J1/08 ,  F21V5/00 ,  G01J1/04 ,  G01J1/42 ,  G03B21/14 ,  G03B21/26 ,  H05B35/00 ,  F21V17/10 ,  F21Y105/16 ,  G03B21/20 ,  F21Y113/10 ,  F21K9/90

CPC classification number: G01J1/08 ,  F21V5/007 ,  F21V17/101 ,  G01J1/0474 ,  G01J1/42 ,  G03B21/145 ,  G03B21/26 ,  H05B35/00 ,  F21K9/90 ,  F21Y2105/16 ,  F21Y2113/10 ,  G03B21/2033

Abstract: A light sensing module and an electronic device using the same are provided. The light sensing module includes a substrate, a light sensing unit, a first light-transmissive component and a blocking wall. The light sensing unit is disposed on the substrate to sense an intensity of a working light beam. The first light-transmissive component covers the light sensing unit, and has a first refractive index that is between a refractive index of the light sensing unit and a refractive index of air. The blocking wall is disposed on the substrate, and surrounds the light sensing unit and the first light-transmissive component.

公开(公告)号：US20190250493A1

公开(公告)日：2019-08-15

申请号：US16243642

申请日：2019-01-09

Applicant: SHARP KABUSHIKI KAISHA

Inventor： NORIAKI FUJII

IPC: G03B21/20 ,  G02B26/12

CPC classification number: G03B21/2033 ,  G02B26/12 ,  G03B21/2013

Abstract: A laser light source device includes a plurality of semiconductor laser elements, an optical coupling element that couples together a plurality of laser beams that are emitted from the plurality of semiconductor laser elements, and a plurality of apertures, each provided between a corresponding one of the semiconductor laser elements and the optical coupling element, that correspond to the plurality of semiconductor laser elements, respectively. The plurality of apertures are set so that aperture diameters of the plurality of apertures become smaller as wavelengths of laser beams that pass through the respective apertures become shorter.