公开(公告)号：US11934089B2

公开(公告)日：2024-03-19

申请号：US17788754

申请日：2020-03-13

申请人： CHENGDU XGIMI TECHNOLOGY CO., LTD.

发明人： Bo Zhong ,  Shi Xiao ,  Xin Wang ,  Zhong Ning

IPC分类号： G03B21/53 ,  H04N9/31

CPC分类号： G03B21/53 ,  H04N9/317

摘要： The present disclosure relates to the technical field of compensation for projection thermal defocusing, and the embodiments specifically disclose a bidirectional compensation method and apparatus for projection thermal defocusing, and a readable storage medium. The bidirectional compensation method for projection thermal defocusing provided in the present disclosure comprises determining whether to proceed to a definition value determination step according to whether a similarity value of two latest projected picture images satisfies a preset similarity value requirement; by means of the method of proceeding to first-direction thermal defocusing compensation or second-direction thermal defocusing compensation by comparing the magnitude of definition values of the latest two projected picture images, non-perception compensation for projection thermal defocusing is achieved, without using a specified compensation direction and a specific focusing map, and a compensation effect is achieved by means of real-time analysis of projected pictures, the operation being convenient and suitable for widespread popularization.

公开(公告)号：US11886107B2

公开(公告)日：2024-01-30

申请号：US17389443

申请日：2021-07-30

申请人： IVIEW DISPLAYS (SHENZHEN) COMPANY LTD.

发明人： Yong Li ,  Zhiqiang Gao ,  Steve Yeung ,  Tak Yeung

IPC分类号： G03B7/08 ,  G03B9/02 ,  G03B21/53 ,  H04N9/31

CPC分类号： G03B7/08 ,  G03B9/02 ,  G03B21/53 ,  H04N9/317 ,  H04N9/3194

摘要： Embodiments of the present application relate to the technical field of projection, and in particular, relate to a projection method and a projection device. The projection method includes: acquiring a projection image and an environmental image when a screen picture is projected to a projection region, wherein the environmental image includes an image when a predetermined projection screen picture is projected to the projection region or an image when no screen picture is projected to the projection region; regulating an aperture based on the projection image and the environmental image, wherein the aperture is configured to control a light flux projected to the projection region. Therefore, by adjusting the light flux, impacts caused by the stray light may be mitigated, and a relationship between projection contrast and luminance may be better coordinated, such that the projection contrast and luminance are effectively balanced and hence projection quality is improved.

公开(公告)号：US20230152676A1

公开(公告)日：2023-05-18

申请号：US17986897

申请日：2022-11-15

申请人： Coretronic Corporation

发明人： CHIH-HUI CHANG

IPC分类号： G03B21/14 ,  G03B21/53

CPC分类号： G03B21/142 ,  G03B21/145 ,  G03B21/53

摘要： A focusing module includes a focusing ring and a projection lens mounting ring. The focusing ring has a first ring body and a first annular wall with a limiting hole. The projection lens mounting ring has a second annular wall which can rotate relative to the first annular wall along a circumferential direction of the first annular wall. The second annular wall has a through hole and a rotation buffer structure having a limiting portion and a cantilever portion. The limiting portion has a center surrounded by the hole edge and protruding toward the first annular wall. The center has first side and second side. A thickness of the limiting portion decreases from the center toward the first and second side. The center is in the limiting hole and the first annular wall is pressed against the first and second side when the limiting portion contacts against the limiting hole.

公开(公告)号：US20230048798A1

公开(公告)日：2023-02-16

申请号：US17402306

申请日：2021-08-13

申请人： VTech Telecommunications Limited

发明人： Tomy Cai ,  Channing Chang

IPC分类号： H04N7/15 ,  G03B21/53 ,  G10L21/0216 ,  H04W4/80

摘要： Provided are apparatuses and associated methods for video communications and related features. In one embodiment, a big-screen video communications apparatus is provided that includes a projector and speaker for projecting received images and sounds and includes a camera and microphone for capturing images and sounds for transmission.

公开(公告)号：US20230043860A1

公开(公告)日：2023-02-09

申请号：US17505873

申请日：2021-10-20

申请人： Union Optech Co., Ltd.

发明人： Yuancai LI ,  Liwei QUAN ,  Shoulin LI ,  Hao WANG

IPC分类号： G02B13/24 ,  G02B13/00 ,  G03B21/53 ,  H04N9/31

摘要： Disclosed is an ultra-short focus projecting optical system, which includes a display unit, a first lens group having a positive focus power, a second lens group having a positive focus power, a third lens group having a negative focus power, and an aspherical reflector arranged sequentially along a projection direction. The first lens group includes a first lens, a second lens and a diaphragm arranged sequentially along the projection direction. The first lens is a glass aspherical lens, the second lens is a glass spherical lens, and the first lens and the second lens are bent toward the diaphragm from their respective centers to their respective peripheries. The ultra-short focus projecting optical system and a projection device provided by this application can realize a large aperture and high resolution.

公开(公告)号：US11249381B2

公开(公告)日：2022-02-15

申请号：US16733382

申请日：2020-01-03

申请人： CANON KABUSHIKI KAISHA

发明人： Atsushi Kano

IPC分类号： G03B21/54 ,  G03B21/14 ,  G02B7/04 ,  G03B21/53

摘要： A projection apparatus configured to project a projection image based on image data through a projection optical system that includes a field curvature adjustment lens unit configured to adjust a field curvature in order to focus on a nonplanar projection surface includes a processor configured to generate the image data including information on a focus fixed position where a focus does not change on the projection surface in adjusting the field curvature.

公开(公告)号：US20210080687A1

公开(公告)日：2021-03-18

申请号：US17105529

申请日：2020-11-26

申请人： Young Optics Inc.

发明人： Yi-Feng Yen ,  Chia-Chang Lee

IPC分类号： G02B7/09 ,  G03B21/53

摘要： A lens device including a lens barrel, a lens, a linear reciprocating motion mechanism, and a power machine is provided. The lens is disposed in the lens barrel. The linear reciprocating motion mechanism includes a first movable part and a second movable part. The first movable part is coupled to the lens barrel. The second movable part is coupled to the first movable part. The power machine is coupled to the second movable part to drive the second movable part to rotate, thereby driving the first movable part, and the first movable part drives the lens barrel to perform a linear reciprocating motion, wherein when the second movable part is rotated by N turns, the first movable part is rotated by one turn, and N is greater than or equal to 10.

公开(公告)号：US10859369B2

公开(公告)日：2020-12-08

申请号：US16601606

申请日：2019-10-15

申请人： Keyence Corporation

发明人： Noriyoshi Yamane ,  Yuichiro Hama

IPC分类号： G01B11/14 ,  G01B11/06 ,  G01B11/25 ,  G02B26/10 ,  G02B26/08 ,  G06T7/70 ,  G03B21/53 ,  G03B21/14

摘要： To enable scanning using measurement light with a small-sized displacement measuring apparatus. The displacement measuring apparatus includes a MEMS mirror for scanning using measurement light that is output from a light projection lens. The light projection lens has a focus position, at which the measurement light is condensed, at the MEMS mirror or in the vicinity of the MEMS mirror on an optical axis of the measurement light. The measurement light that is reflected at the MEMS mirror spreads in a strip-shaped manner as the measurement light comes close to a measurement region.

公开(公告)号：US10591717B2

公开(公告)日：2020-03-17

申请号：US16084584

申请日：2017-02-28

申请人： FISBA AG

发明人： Hansruedi Moser ,  Patrick Spring ,  Marcel Wäspi

IPC分类号： G03B21/14 ,  H04N9/31 ,  G02B26/10 ,  G03B21/20 ,  G03B21/53

摘要： A light module (1) which comprises preferably at least three laser diodes (2a, 2b, 2c) that emit light in a visible wavelength range, a respective collimating device (3a, 3b, 3c) per laser diode, a beam combination device (4) for combining the emitted light of the individual laser diodes (2a, 2b, 2c), a beam-shaping device (5) for shaping the combined beam, and at least one emitter (6) for generating non-visible light, in particular an IR laser diode. The emitter (6) is arranged in such a way that the emitted non-visible light is not guided through at least one of the beam combination device (4) or the beam-shaping device (5).

公开(公告)号：US10571793B2

公开(公告)日：2020-02-25

申请号：US15217067

申请日：2016-07-22

申请人： Natalie Rosanna Rebot

发明人： Natalie Rosanna Rebot

IPC分类号： G03B21/64 ,  G03B21/53 ,  G03B21/00 ,  G03B21/20 ,  G02B13/00 ,  G02B13/16 ,  G03B15/05 ,  G06K7/10 ,  G06K19/06 ,  H04N5/225 ,  G03B3/10 ,  G03B21/54 ,  G03B23/08 ,  G03B29/00

摘要： An image projection device is disclosed having a body defining an aperture that includes a slide frame receiving slot that is transverse to the aperture and a magnifying lens positioned in alignment with the aperture at the front of the body. The image projection device can be attached to a mobile device and uses the camera flash of the mobile device to provide the light source to illuminate a slide transparency. The mobile device can identify a particular slide transparency through information encoded on the slide frame in order to coordinate audio or video output with the projected slide.