公开(公告)号：US11714249B2

公开(公告)日：2023-08-01

申请号：US17553661

申请日：2021-12-16

Applicant: Coretronic Corporation

Inventor： Ming-Chen Liu ,  Hung-Lin Lee

IPC: G02B7/02 ,  G03B21/20

CPC classification number: G02B7/02 ,  G03B21/20

Abstract: The invention provides a fixing structure having an inner wall forming a through hole around a central axis and a first rib protruded from the inner wall toward the central axis along a radial direction of the through hole with an extending direction parallel to an axial direction of the central axis, and a projection apparatus including an illumination system, a light valve, and a projection lens. The illumination system includes the fixing structure, an optical device, and a light source illuminating the optical device to form an illumination beam. The optical device is placed in the through hole and interfered by the first rib to be fixed in the through hole. The light valve is located on a transmission path of the illumination beam and converts it into an image beam. The projection lens is located on a transmission path of the image beam and projects the image beam.

公开(公告)号：US11656475B2

公开(公告)日：2023-05-23

申请号：US17581823

申请日：2022-01-21

Applicant: LIQXTAL TECHNOLOGY INC.

Inventor： Hung-Shan Chen ,  Yen-Chen Chen

IPC: G02B27/42 ,  G01B11/25 ,  G02B5/32 ,  G03B21/00 ,  G02B5/30 ,  H04N13/254 ,  G02B27/28 ,  G03B21/20 ,  G01N21/88

CPC classification number: G02B27/425 ,  G01B11/2513 ,  G02B5/3083 ,  G02B5/32 ,  G02B27/286 ,  G03B21/00 ,  H04N13/254 ,  G01N2021/8829 ,  G03B21/20

Abstract: An optical sensing device adopted to use structured light to detect an object is provided. The optical sensing device includes a structured light projector and a sensor. The structured light projector includes a light source and at least one beam multiplication film. The light source is configured to emit a light beam. The at least one beam multiplication film is disposed on a transmission path of the light beam and is made of anisotropic refractive index material, wherein a plurality of separated light beams are produced after the light beam from the light source passes through the at least one beam multiplication film, so as to form the structured light. The sensor is configured to sense the structured light reflected from the object. Besides, a structured light projector is also provided.

公开(公告)号：US20190219909A1

公开(公告)日：2019-07-18

申请号：US16327073

申请日：2017-08-18

Applicant: Takahiro KADO

Inventor： Takahiro KADO

IPC: G03B21/20 ,  G02B27/10 ,  G02B26/00 ,  G02B5/02 ,  H04N9/31

CPC classification number: G03B21/204 ,  G02B5/02 ,  G02B26/008 ,  G02B27/1026 ,  G03B21/20 ,  G03B21/2066 ,  G03B21/2073 ,  H04N9/3161

Abstract: An illumination device including: a light source (11) configured to emit source light; a fluorescence generating unit (16,18) configured to generate fluorescent light by use of the source light from the light source (11) as excitation light; a wavelength selecting unit ((13) configured to alternately place either a first segment or a second segment in a light path, the first segment allowing the source light to pass therethrough, and the second segment reflecting the source light while allowing the fluorescent light to pass therethrough; a polarization converting unit (14) configured to convert polarization of light between linear polarization and circular polarization; and a light guiding unit (15, 17) configured to guide a first linear polarization component and the fluorescent light to the polarization converting unit (14) and to guide a second linear polarization component to the fluorescence generating unit (16, 18). The object is to downsize an illumination device.

公开(公告)号：US20180088454A1

公开(公告)日：2018-03-29

申请号：US15522274

申请日：2016-05-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Zhongxiao Li

IPC: G03B21/56 ,  G02B27/22 ,  G02B5/13 ,  G03B35/24 ,  G03B35/26

CPC classification number: G03B21/56 ,  G02B5/13 ,  G02B27/2214 ,  G02B27/225 ,  G03B21/005 ,  G03B21/13 ,  G03B21/20 ,  G03B21/2066 ,  G03B33/10 ,  G03B35/24 ,  G03B35/26

Abstract: Embodiments of the disclosure provide a projection display apparatus comprising: a light source for emitting a light beam; a first light path configured to project the light beam emitted from the light source to a first display position; a second light path configured to project the light beam emitted from the light source to a second display position; a light patch switching device configured to switch the light beam emitted from the light source between the first light path and the second light path; and a light modulation device through which both the first light path and the second light path pass, wherein the light modulation device is configured to modulate the light beam passing therethrough to generate a display image.

公开(公告)号：US09880455B2

公开(公告)日：2018-01-30

申请号：US15392781

申请日：2016-12-28

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Toshifumi Kase ,  Naoto Yoshida

IPC: G03B21/14 ,  G03B21/20

CPC classification number: G03B21/2093 ,  G03B21/145 ,  G03B21/20 ,  G03B21/2066

Abstract: There is provided a light source unit including a light source case into which a plurality of optical members are incorporated, wherein the light source case has fixing portions for fixing the optical member which are provided in a position on a main body bottom plate of the light source case and in both side positions of the optical member above the main body bottom plate, and an upper fastening plate which presses down the optical member accommodated in the light source case, and wherein the fixing portions include a lower fixing portion where a primary positioning portion is formed on the main body bottom plate and side fixing portions where a pair of secondary positioning portions are formed which are brought into abutment with a surface of the optical member which is opposite to a surface thereof which is brought into abutment with the primary positioning portion.

公开(公告)号：US09851627B2

公开(公告)日：2017-12-26

申请号：US14886264

申请日：2015-10-19

Applicant: HON HAI PRECISION INDUSTRY CO., LTD.

Inventor： Jing-Miau Wu

IPC: G03B21/16 ,  G03B21/14 ,  G03B21/20 ,  G03B33/08 ,  G02B26/00

CPC classification number: G03B21/16 ,  G02B26/008 ,  G03B21/145 ,  G03B21/20 ,  G03B33/08

Abstract: An optical engine of a projector can include a light source device configured to emit light beam, an engine body and a dust cover. The engine body is located at a side of the light source device and is configured to receive the light beam from the light source device. The engine body can include a main body and a color wheel coupled to the main body. The dust cover is coupled to the engine body and covers the color wheel. A projector is also provided.

公开(公告)号：US20170315434A1

公开(公告)日：2017-11-02

申请号：US15651770

申请日：2017-07-17

Applicant: Hitachi Maxell, Ltd.

Inventor： Takuya SHIMIZU ,  Kentaro KATO

IPC: G03B21/20 ,  H04N9/31 ,  G03B21/28 ,  G03B21/14

CPC classification number: G03B21/2053 ,  G03B21/14 ,  G03B21/20 ,  G03B21/208 ,  G03B21/2093 ,  G03B21/28 ,  H04N9/315 ,  H04N9/3152 ,  H04N9/3155

Abstract: According to the present invention, a projection type image display apparatus enables control of a large amount of light masking through a light-masking unit while maintaining a uniform illumination distribution in an area to be illuminated by the illumination light. The apparatus uses two array lenses on which lens cells are arranged in matrix form, where light-masking unit masks the array lens installed on the light source side in their particular area. The light-masking unit adjusts the amount of light emitted from the light source. The light-masking area of lens cells adjacent to lens cells closest to an optical axis is made smaller than the light-masking area of other cells.

公开(公告)号：US20170255089A1

公开(公告)日：2017-09-07

申请号：US15599326

申请日：2017-05-18

Applicant: APPOTRONICS CHINA CORPORATION

Inventor： Fei HU ,  Yi LI ,  Liangliang CAO ,  Yi YANG

IPC: F21V14/08 ,  H04N9/31 ,  G03B33/08 ,  G03B21/00 ,  G02B27/14 ,  G03B21/20 ,  G02F1/133

CPC classification number: G03B21/204 ,  F21V14/08 ,  G02B27/141 ,  G03B21/005 ,  G03B21/20 ,  G03B21/2013 ,  G03B21/2033 ,  G03B21/206 ,  G03B21/2066 ,  G03B33/08 ,  H04N9/3105 ,  H04N9/3114 ,  H04N9/3117 ,  H04N9/312 ,  H04N9/3158 ,  H04N9/3164

Abstract: A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical path and a second optical path, and also with which at least a part of the second light is emitted along the first optical path; a first spatial light modulator for modulating the beam emitted from the beam splitting system along the first optical path; a second spatial light modulator for modulating the beam emitted from the beam splitting system along the second optical path. The light source system has the advantages of high light-emitting efficiency and low cost. A projection system comprising the aforementioned light source system is also provided.

公开(公告)号：US09462215B2

公开(公告)日：2016-10-04

申请号：US14530977

申请日：2014-11-03

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Douglas J. Gorny ,  Douglas Jason Darrow ,  Craig Todd

IPC: H04N5/74 ,  H04N9/31 ,  G03B21/20 ,  G02B26/08 ,  G02B27/10

CPC classification number: H04N5/7441 ,  G02B26/0833 ,  G02B27/102 ,  G03B21/20 ,  G03B21/2053 ,  H04N9/3138 ,  H04N9/3155 ,  H04N9/3161 ,  H04N9/3164

Abstract: Projector display systems comprising a light dimmer and first modulator are disclosed. The light dimmer may comprise an adjustable iris, adjustable light sources and/or LCD stack that is capable of lowering the luminance of the light source illuminated the first modulator. The first modulator may comprise a plurality of analog mirrors (e.g. MEMS array) and the second modulator may comprise a plurality of mirrors (e.g., DMD array). The display system may further comprise a controller that sends control signals to the light dimmer and first modulator. The display system may render a desired dynamic range for rendering a projected image by a combination of such control signals.

Abstract translation: 公开了包括光调光器和第一调制器的投影仪显示系统。 光调光器可以包括能够降低照亮第一调制器的光源的亮度的可调光圈，可调光源和/或LCD堆叠。 第一调制器可以包括多个模拟反射镜（例如MEMS阵列），并且第二调制器可以包括多个反射镜（例如，DMD阵列）。 显示系统还可以包括控制器，其向光调光器和第一调制器发送控制信号。 显示系统可以通过这种控制信号的组合呈现用于渲染投影图像的期望的动态范围。

公开(公告)号：US09442354B2

公开(公告)日：2016-09-13

申请号：US13879857

申请日：2011-12-14

Applicant: Ulrich Backes ,  Harald Kohnlein

Inventor： Ulrich Backes ,  Harald Kohnlein

IPC: G03B21/20 ,  B60Q3/04 ,  G03B21/08 ,  G03B21/00

CPC classification number: G03B21/2013 ,  B60Q3/14 ,  G03B21/001 ,  G03B21/08 ,  G03B21/20

Abstract: A simple optical projection device with a high luminous efficacy has a point light source, a projection screen, a mask that is arranged in the light path upstream of the projection screen and is light-transmissive in some areas, and a light focusing optical lens arranged between the point light source and the mask. The optical lens is selected such that the prolongations of the emerging beams of the optical lens on the side thereof facing the point light source intersect in a virtual perspective center which is more remote from the lens than the point light source.

Abstract translation: 具有高发光效率的简单的光学投影装置具有点光源，投影屏幕，布置在投影屏幕上游的光路中并且在一些区域中是透光的掩模，并且配置有聚光光学透镜 在点光源和掩模之间。 选择光学透镜，使得光学透镜在其面向点光源的一侧的出射光束的延长在远离透镜的虚拟透视中心与点光源相交。