公开(公告)号：US11822071B2

公开(公告)日：2023-11-21

申请号：US17526866

申请日：2021-11-15

申请人： Zhuhai Pantum Electronics Co., Ltd.

发明人： Ronghua Li ,  Chao Wang ,  Dongning Wang

IPC分类号： G02B26/08 ,  G02B26/12 ,  G02B27/42 ,  G03G15/04 ,  G03G15/043 ,  B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  B41J2/47

CPC分类号： G02B26/125 ,  B41J2/442 ,  B41J2/451 ,  B41J2/455 ,  B41J2/473 ,  G02B26/0816 ,  G02B26/123 ,  G02B26/124 ,  G02B26/127 ,  G02B27/4227 ,  G03G15/0435

摘要： Optical scanner and electrophotographic image forming device are provided. The optical scanner includes a light source; and a first optical unit, a deflection apparatus, and an f-θ lens, which are sequentially arranged along a primary optical axis direction of a light beam emitted from the light source. The light beam emitted from the light source is focused onto a scanning target surface after sequentially passing through the first optical unit, the deflection apparatus, and the f-θ lens. Optical scanning directions of the light beam emitted from the light source include a primary scanning direction and a secondary scanning direction which are perpendicular to each other, and along the primary scanning direction, the f-θ lens satisfies following expressions: SAG1>0, SAG2>0, and 0

公开(公告)号：US20230176363A1

公开(公告)日：2023-06-08

申请号：US18070364

申请日：2022-11-28

申请人： SHARP KABUSHIKI KAISHA

发明人： MANABU MATSUO

IPC分类号： G02B26/12

CPC分类号： G02B26/123 ,  G02B26/125 ,  G02B26/127 ,  G03G15/04045

摘要： In an image-forming apparatus, an optical scanning device that is adjustable in a turn available manner around a turn axis line parallel to an axis line orthogonal to a main scanning direction of a light beam is attached to an image-forming apparatus body. The image-forming apparatus body has a shaft support that supports the optical scanning device in a turn available manner around a turn axis line and a holder facing a housing at a position different from that of the shaft support. The optical scanning device is held by the image-forming apparatus body in a state in which an elastic member is sandwiched between the housing and the holder in a pressed manner.

公开(公告)号：US11644667B2

公开(公告)日：2023-05-09

申请号：US17096040

申请日：2020-11-12

申请人： KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA TEC KABUSHIKI KAISHA

发明人： Yoshihisa Masuda

IPC分类号： G02B26/12 ,  H04N1/028 ,  G02B27/09

CPC分类号： G02B26/123 ,  G02B26/124 ,  G02B27/0977 ,  H04N1/0282

摘要： An image forming apparatus includes first and second light sensors positioned in a laser scanning system of at least one color, such that scanned light is detected by the first light sensor and then by the second light sensor and light sensing surfaces of the first and second light sensors are not parallel, and a control unit connected to the first and second light sensors and configured to determine a time difference in the timing of light detection by the first and second light sensors and to execute a color position shift operation upon determining that the time difference is greater than a first threshold value.

公开(公告)号：US11644543B2

公开(公告)日：2023-05-09

申请号：US17531624

申请日：2021-11-19

申请人： Innovusion Ireland Limited

发明人： Micah Ledbetter ,  Junwei Bao ,  Rui Zhang ,  Yimin Li

IPC分类号： G01C3/08 ,  G01S7/481 ,  G02B26/10 ,  G02B26/12 ,  G01S17/10

CPC分类号： G01S7/4817 ,  G01S7/4815 ,  G01S17/10 ,  G02B26/101 ,  G02B26/123

摘要： Embodiments discussed herein refer to using LiDAR systems that uses a rotating polygon with a multi-facet mirror. Such multi-facet galvanometer mirror arrangements generate a point map that has reduced curvature.

公开(公告)号：US20180295254A1

公开(公告)日：2018-10-11

申请号：US16004237

申请日：2018-06-08

申请人： Ventana Medical Systems, Inc.

发明人： Martin Philip Gouch ,  William Roland Hawes ,  Joachim Helmut Schmid

IPC分类号： H04N1/024 ,  H04N1/10

CPC分类号： H04N1/02409 ,  G02B26/123 ,  G02B26/128 ,  H04N1/1043

摘要： Image scanning apparatus and method of operating an image scanning apparatus, the image scanning apparatus including a line scan detector and being configured to image a surface of an object mounted in the image scanning apparatus in a plurality of swathes, wherein each swathe is formed by a group of scan lines, each scan line being acquired using the scan line detector from a respective elongate region of the surface of the object extending in a scan width direction, wherein each group of scan lines is acquired whilst the object is moved relative to the scan line detector in a scan length direction.

公开(公告)号：US10082666B2

公开(公告)日：2018-09-25

申请号：US15611608

申请日：2017-06-01

申请人： CANON KABUSHIKI KAISHA

发明人： Tatsuya Hotogi ,  Atsunobu Mori

IPC分类号： G02B26/12 ,  B41J2/44 ,  B41J2/47

CPC分类号： G02B26/127 ,  B41J2/442 ,  B41J2/473 ,  G02B26/123 ,  G02B26/125

摘要： A CPU is provided which controls a first light emission state in which a light source is controlled to emit a light beam to scan a full-scanning region and a second light emission state in which the light source is controlled to emit a light beam to scan a non-image region in a period from start of activation of a scanning motor to when the number of rotations of the scanning motor reaches a target number of rotations. The CPU acquires BD cycle values of BD signals generated by a main-scanning synchronization sensor, determines a second timing for changing from the first light emission state to the second light emission state on the basis of the two serial BD cycle values, and changes the semiconductor laser from the first light emission state to the second light emission state according to the second timing.

公开(公告)号：US10062016B2

公开(公告)日：2018-08-28

申请号：US14980063

申请日：2015-12-28

申请人： Sharp Kabushiki Kaisha

发明人： Nobuhiro Shirai

IPC分类号： G02B13/00 ,  H04N1/06 ,  G06K15/14 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  B41J2/47 ,  G03G15/04 ,  G03G15/043 ,  G02B26/12

CPC分类号： G06K15/14 ,  B41J2/471 ,  G02B13/0005 ,  G02B26/122 ,  G02B26/123 ,  G02B26/124 ,  G02B26/125 ,  G02B26/127 ,  G03G15/04 ,  G03G15/043 ,  H04N1/053 ,  H04N1/0607 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0082 ,  H04N2201/04713 ,  H04N2201/04732 ,  H04N2201/04744

摘要： A light scanning device includes: a first semiconductor laser 44a that emits a light beam L1; a polygonal mirror 42 that deflects the light beam L1; a reflective mirror 64a that reflects the light beam L1 deflected by the polygonal mirror 42 and causes the light beam L1 to enter a photosensitive drum 13; and a BD sensor 72 that detects the light beam L1 deflected by the polygonal mirror 42. The light scanning device scans the photosensitive drum 13 with the light beam L1 and set scanning timing of the photosensitive drum 13 using the light beam L1 based on detection timing of the light beam L1 using the BD sensor 72. The BD sensor 72 is arranged in the position farther from the polygonal mirror 42 than the last reflective mirror 64a that reflects the light beam L1 immediately before entering the photosensitive drum 13 and arranged inside a scanning angle range α of the light beam L1 corresponding to an effective scan area of the photosensitive drum 13.

公开(公告)号：US20180234565A1

公开(公告)日：2018-08-16

申请号：US15889045

申请日：2018-02-05

申请人： CANON KABUSHIKI KAISHA

发明人： Yuichiro Imai

IPC分类号： B41J2/385 ,  H04N1/00 ,  H04N1/028 ,  H04N1/29 ,  H04N1/031

CPC分类号： H04N1/00525 ,  G02B7/182 ,  G02B26/123 ,  G02B26/124 ,  G02B26/127 ,  G03G15/04072 ,  G03G15/043 ,  G03G15/1605 ,  H04N1/0283 ,  H04N1/0312 ,  H04N1/29 ,  H04N2201/0094

摘要： A light scanning apparatus including: a first holder attached to a housing and configured to hold a first laser light source; a second holder attached to the housing and configured to hold a second laser light source; and a lens to which the laser lights are first incident, wherein the first holder and the second holder are attached to the housing in mutually different positions in a rotation axis direction of a rotary polygon mirror and in an optical axis direction of the lens, so that a first incident light path from the first laser light source to the rotary polygon mirror is placed between a second incident light path from the second laser light source to the rotary polygon mirror and the lens, and the first holder and the second holder overlap one another in the rotation axis direction.

公开(公告)号：US10012830B2

公开(公告)日：2018-07-03

申请号：US14716009

申请日：2015-05-19

申请人： Naoki Miyatake ,  Yukihisa Yokoyama

发明人： Naoki Miyatake ,  Yukihisa Yokoyama

IPC分类号： G02B26/12 ,  G02B26/10 ,  H04N1/04

CPC分类号： G02B26/125 ,  G02B26/123 ,  G02B26/124 ,  H04N1/0283 ,  H04N1/04

摘要： An optical scanning device includes plural light sources, a light deflector including a deflecting-reflecting surface, and a scanning optical system including plural folding mirrors and plural scanning lenses, wherein the plural scanning lenses have the same shape, at least one of an optical surface at the incidence side and an optical surface at the emission side has an asymmetric shape with respect to a sub-scanning direction, and has an asymmetric shape in the sub-scanning direction with respect to the main scanning direction, and a difference in a number of folding mirrors disposed between the corresponding scanning lens and the light deflector between light incident on the light deflector from a direction inclined to one side relative to a virtual surface including a normal line of the deflecting-reflecting surface and light incident on the light deflector from a direction inclined to the other side is an odd number.

公开(公告)号：US20180184057A1

公开(公告)日：2018-06-28

申请号：US15817572

申请日：2017-11-20

申请人： RED.COM, LLC

发明人： James H. Jannard ,  Stuart J. English ,  Gregory Alan Prior ,  Edmund Sandberg ,  Ryan Newham

IPC分类号： H04N9/31 ,  F21V8/00 ,  G03B33/00 ,  G03B21/20 ,  G03B21/00 ,  G02B27/48 ,  G02B27/26 ,  G02B26/12 ,  G02B6/06

CPC分类号： H04N9/3164 ,  G02B6/0005 ,  G02B6/06 ,  G02B26/123 ,  G02B27/26 ,  G02B27/48 ,  G03B21/00 ,  G03B21/005 ,  G03B21/206 ,  G03B33/00 ,  H04N9/3108 ,  H04N9/3117 ,  H04N9/3144 ,  H04N9/315 ,  H04N9/3155 ,  H04N9/3161 ,  H04N9/3167 ,  H04N9/3188 ,  H04N13/324 ,  H04N13/363

摘要： Some embodiments provide for a modular video projector system having a light engine module and an optical engine module. The light engine module can provide narrow-band laser light to the optical engine module which modulates the laser light according to video signals received from a video processing engine. Some embodiments provide for an optical engine module having a sub-pixel generator configured to display video or images at a resolution of at least four times greater than a resolution of modulating elements within the optical engine module. Systems and methods for reducing speckle are presented in conjunction with the modular video projector system.