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1. 发明授权

US11079579B2 Image forming optical system, and imaging apparatus and projecting apparatus having the same 有权
公开(公告)号：US11079579B2
公开(公告)日：2021-08-03
申请号：US16210520
申请日：2018-12-05
申请人： CANON KABUSHIKI KAISHA
发明人： Hiroto Kano , Yu Miyajima
IPC分类号： G02B17/00 , G02B17/06 , G02B13/16 , G02B17/08 , G03B21/28
摘要： An image forming optical system 1 includes, in order from an enlargement side, a first optical system 111 having a reflecting surface, and a second optical system 112 having a refracting surface. The image forming optical system 1 is configured to form an intermediate image 104 between the first optical system 111 and the second optical system 112. The first optical system 111 includes, in order from the enlargement side, a first reflecting group 113 having at least one reflecting surface having negative power, and a second reflecting group 114 having a plurality of reflecting surfaces 116 and 117 having positive power. The at least one reflecting surface having negative power includes a reflecting surface 115 closest to the enlargement side in the first reflecting group 113. An absolute value of power of the reflecting surface 115 is smallest in the first optical system 111.

2. 发明申请

US20200319584A1 METHOD FOR DETERMINING TYPE OF SHEET BY IMAGING SHEET 审中-公开
公开(公告)号：US20200319584A1
公开(公告)日：2020-10-08
申请号：US16835731
申请日：2020-03-31
申请人： CANON KABUSHIKI KAISHA
发明人： Masafumi Monde , Mizuki Ishimoto , Yu Miyajima , Norio Matsui
IPC分类号： G03G15/00 , H05B47/115 , G02B17/08 , G03G15/043 , G03G15/04
摘要： A first light guide guides first light in a first light guiding path. The first light is of light irradiated from the light source to a sheet. A first detection unit receives reflected light from the sheet and outputs an image signal indicating an image of a surface of the sheet. A second light guide guides second light in a second light guiding path different from the first light guiding path. The second light is of the light irradiated from the light source and is different from the first light. A second detection unit receives the second light and output a detection signal corresponding to a light amount of the second light. A control unit controls a light emission amount of the light source based on the detection signal.

3. 发明授权

US10670984B2 Light guiding member, detector, spectral colorimetric apparatus, and image forming apparatus 审中-公开
公开(公告)号：US10670984B2
公开(公告)日：2020-06-02
申请号：US16202456
申请日：2018-11-28
申请人： CANON KABUSHIKI KAISHA
发明人： Yu Miyajima
IPC分类号： G01J3/02 , G03G15/01 , G01J3/42 , G01J3/20 , G02B5/10
摘要： For the purpose of providing a light guiding member with a simple structure which is capable of suppressing risk that unnecessary light could be mixed in a primary optical path, a light guiding member according to the present invention includes an incident surface, a reflection surface which reflects a light flux from the incident surface, and a side surface disposed at a distance of 1.2 R or more from a center of the reflection surface, where R is a distance from the center to an edge portion of the reflection surface, in a direction perpendicular to a first cross-section including an incident light toward the reflection surface on an optical axis and a reflected light from the reflection surface on the optical axis.

4. 发明申请

US20170131669A1 ILLUMINATION OPTICAL SYSTEM, AND SPECTROPHOTOMETRIC APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE SAME 有权
公开(公告)号：US20170131669A1
公开(公告)日：2017-05-11
申请号：US15347263
申请日：2016-11-09
申请人： CANON KABUSHIKI KAISHA
发明人： Yu Miyajima
IPC分类号： G02B5/02 , H01J5/16 , F21V11/00
CPC分类号： G03G15/50 , F21V7/08 , F21Y2115/10 , F21Y2115/15 , G03G15/043 , G03G15/5062 , G03G2215/0145
摘要： Provided is an illumination optical system includes: a light source; and a light guiding member configured to guide a light flux emitted from the light source to an illuminated surface, the light guiding member having: an incident surface into which the light flux from the light source enters; an ellipsoidal reflection surface configured to reflect the light flux from the incident surface; and an exit surface from which the light flux reflected by the ellipsoidal reflection surface exits, in which the light source is arranged so as to be separated from a first focal point of the ellipsoidal reflection surface at a position farther from the illuminated surface, in a direction perpendicular to a light emitting surface of the light source.

5. 发明申请

US20150160580A1 IMAGE FORMING APPARATUS INCLUDING LENS ARRAY OPTICAL SYSTEM, IMAGE PROCESSING APPARATUS, PROGRAM PRODUCT, AND COMPUTER-READABLE STORAGE MEDIUM 有权
标题翻译：图像形成装置，包括镜头阵列光学系统，图像处理装置，程序产品和计算机可读存储介质
公开(公告)号：US20150160580A1
公开(公告)日：2015-06-11
申请号：US14549775
申请日：2014-11-21
申请人： CANON KABUSHIKI KAISHA
发明人： Tomoyuki Saiki , Takeyoshi Saiga , Yu Miyajima , Shimpei Matsuo
IPC分类号： G06F3/12
CPC分类号： H04N1/407 , G03G15/043 , G06K15/14 , G06K15/1825 , H04N1/29
摘要： An image forming apparatus includes: an exposure unit including a plurality of light-emitting units that correspond to a respective plurality of pixels and a lens array optical system; a photosensitive member exposed by the exposure unit; and a correcting unit configured to estimate, from image data, an intensity of ghost light at a position of each pixel on the photosensitive member in the case where the photosensitive member is exposed by the exposure unit using the image data, and correct the image data based on the estimated intensity of the ghost light.
摘要翻译：一种图像形成装置，包括：曝光单元，包括对应于多个像素的多个发光单元和透镜阵列光学系统; 由曝光单元曝光的感光构件; 以及校正单元，被配置为从图像数据估计在使用图像数据由曝光单元曝光感光构件的情况下，感光构件上的每个像素的位置处的重影光的强度，并且校正图像数据基于鬼灯的估计强度。

6. 发明申请

US20150002596A1 IMAGE FORMING DEVICE 有权
标题翻译：图像形成装置
公开(公告)号：US20150002596A1
公开(公告)日：2015-01-01
申请号：US14315034
申请日：2014-06-25
申请人： Canon Kabushiki Kaisha
发明人： Tomokazu Morita , Takeyoshi Saiga , Yu Miyajima , Seiji Mishima
IPC分类号： B41J2/385
CPC分类号： G03G15/04036 , G03G15/04063 , G03G15/043 , G03G2215/0132
摘要： An exposure unit includes a lens group having a plurality of lenses arrayed in a first direction and an element array which is arranged to face the lens group and includes a plurality of organic EL elements arrayed in parallel with the first direction on a substrate, a drive circuit including a plurality of TFT circuits for controlling luminance per unit time of the organic EL element is arranged on the substrate, and the TFT circuit controls the luminance of the organic EL element based on a signal created by an area gray scale method.
摘要翻译：曝光单元包括具有沿第一方向排列的多个透镜的透镜组和被布置为面对透镜组并且包括在基板上与第一方向平行排列的多个有机EL元件的驱动元件阵列包括用于控制有机EL元件的每单位时间的亮度的多个TFT电路的电路布置在基板上，并且TFT电路基于由区域灰度法产生的信号来控制有机EL元件的亮度。

7. 发明申请

US20140333711A1 OPTICAL SCANNING DEVICE, METHOD FOR MANUFACTURING THE OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS 有权
标题翻译：光学扫描装置，用于制造光学扫描装置的方法和图像形成装置
公开(公告)号：US20140333711A1
公开(公告)日：2014-11-13
申请号：US14272139
申请日：2014-05-07
申请人： CANON KABUSHIKI KAISHA
发明人： Yu Miyajima , Yuichi Tomioka
IPC分类号： B41J2/47 , G02B26/12 , G01B11/14
CPC分类号： G02B26/127 , B41J2/473 , Y10T29/4978
摘要： An optical scanning device includes a deflector configured to deflect a plurality of light beams emitted from a plurality of light emitters that are mutually spaced apart in a sub-scanning direction; an incident optical system configured to steer the plurality of light beams so as to be incident on the deflector; an imaging optical system configured to steer the plurality of light beams so as to be obliquely incident on a surface to be scanned and to form images of the plurality of light emitters on the surface to be scanned; and a correction unit configured to correct a jitter of at least one of the plurality of light beams in a main scanning direction on the basis of irradiation position information, in the sub-scanning direction, of at least one light beam among the plurality of light beams at a point corresponding to the surface to be scanned.
摘要翻译：光学扫描装置包括：偏转器，被配置为偏转从副扫描方向相互间隔开的多个发光体发射的多个光束; 入射光学系统，被配置为引导所述多个光束以便入射在所述偏转器上; 成像光学系统，被配置为引导所述多个光束，以倾斜地入射到待扫描的表面上，并且在待扫描的表面上形成所述多个发光体的图像; 以及校正单元，被配置为基于所述多个光中的至少一个光束的副扫描方向上的照射位置信息来校正所述多个光束中的至少一个光束在主扫描方向上的抖动在与要扫描的表面相对应的点处。

8. 发明授权

US11635721B2 Method for determining type of sheet by imaging sheet 有权
公开(公告)号：US11635721B2
公开(公告)日：2023-04-25
申请号：US17568748
申请日：2022-01-05
申请人： CANON KABUSHIKI KAISHA
发明人： Masafumi Monde , Mizuki Ishimoto , Yu Miyajima , Norio Matsui
IPC分类号： G01N21/55 , G03G15/00 , H05B47/115 , G03G15/04 , G02B17/08 , G03G15/043
摘要： A first light guide guides first light in a first light guiding path. The first light is of light irradiated from the light source to a sheet. A first detection unit receives reflected light from the sheet and outputs an image signal indicating an image of a surface of the sheet. A second light guide guides second light in a second light guiding path different from the first light guiding path. The second light is of the light irradiated from the light source and is different from the first light. A second detection unit receives the second light and output a detection signal corresponding to a light amount of the second light. A control unit controls a light emission amount of the light source based on the detection signal.

9. 发明申请

US20200057299A1 OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20200057299A1
公开(公告)日：2020-02-20
申请号：US16540361
申请日：2019-08-14
申请人： CANON KABUSHIKI KAISHA
发明人： Masayasu Teramura , Yu Miyajima
IPC分类号： G02B26/10 , G03G15/04
摘要： An optical scanning apparatus includes first and second deflecting units, and first and second imaging optical systems to guide first and second light fluxes deflected by the first and second deflecting units to first and second scanned surfaces. The first and second imaging optical systems include first and second imaging elements having the largest refractive power in a sub-scanning section. A distance on an optical path between the first deflecting unit and the first imaging element is shorter than that between the second deflecting unit and the second imaging element. The optical scanning apparatus satisfies: - d 2 N 2  φ 21 φ 2

10. 发明授权

US10401770B2 Discriminating device and image forming apparatus 有权
公开(公告)号：US10401770B2
公开(公告)日：2019-09-03
申请号：US15976278
申请日：2018-05-10
申请人： CANON KABUSHIKI KAISHA
发明人： Yu Miyajima
IPC分类号： G02B17/00 , G03G15/00
摘要： In order to provide a discriminating device in which high discrimination accuracy is achieved by appropriately setting parallelism of a plurality of light beams caused to enter a recording material, provided is a discriminating device including: a light guiding member configured to guide a plurality of light beams from a light source to an irradiated surface; an image pickup element configured to receive a light beam from the irradiated surface; and an optical system configured to guide the light beam from the irradiated surface to the image pickup element, wherein the plurality of light beams include a plurality of first light beams which are emitted from the light guiding member and enter a first effective region of the irradiated surface, and wherein the plurality of first light beams form an angle of 7° or less with each other within a first cross section parallel to the irradiated surface.

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