-
1.发明授权Optical scanning device and image forming apparatus in which a plurality of scanning optical systems except one include a reflecting mirror 有权除了一个以外的多个扫描光学系统包括反射镜的光学扫描装置和图像形成装置公开(公告)号：US08928716B2
公开(公告)日：2015-01-06
申请号：US13757998
申请日：2013-02-04
申请人： Tadashi Nakamura , Toshiaki Tokita , Yukio Itami , Taku Amada , Shingo Tachikawa
发明人： Tadashi Nakamura , Toshiaki Tokita , Yukio Itami , Taku Amada , Shingo Tachikawa
CPC分类号： H04N1/04 , B41J2/473 , G02B26/10 , G02B26/123 , G02B27/141
摘要： An optical scanning device includes: a light source device that emits five light beams corresponding to four basic colors and a single specific color; and five scanning optical systems corresponding the five light beams. One light beam in a first waveband among the light beams corresponding to the four basic colors enters one scanning optical system of the five scanning optical systems. The one scanning optical system includes a dichroic mirror that transmits a light beam in a second waveband different from the first waveband. An angle θb formed between a normal to the incidence plane of the dichroic mirror and orthogonal projection to an assumed plane orthogonal to the main scanning corresponding direction of the incident path of the light beam to the incidence plane of the dichroic mirror is set at an angle of 0° or more and an angle of 45° or less.
摘要翻译： 光学扫描装置包括：光源装置，其发射对应于四种基本颜色和单一特定颜色的五个光束; 和五个对应五个光束的扫描光学系统。 对应于四种基色的光束中的第一波段中的一个光束进入五个扫描光学系统的一个扫描光学系统。 一个扫描光学系统包括分色镜，其在与第一波段不同的第二波段中透射光束。 形成在与分色镜的入射面法线正交的正交投影与垂直于光束与分色镜的入射面的入射路径的主扫描对应方向正交的假想平面的角度＆amp; 角度为0°以上，角度为45°以下。
-
公开(公告)号：US09864164B2
公开(公告)日：2018-01-09
申请号：US15368959
申请日：2016-12-05
申请人： Yukio Itami , Shigeaki Imai , Tadashi Nakamura
发明人： Yukio Itami , Shigeaki Imai , Tadashi Nakamura
CPC分类号： G02B7/1821 , G01S7/4817 , G02B26/105
摘要： An optical deflector includes a mirror rotatable around a rotating shaft of the optical deflector, the mirror including a base made of metal and a reflective surface, the reflective surface being parallel to an axial direction of the rotating shaft of the mirror. The mirror has a length that is twice a length from a center of the rotating shaft to the reflective surface, which is shorter than a length of the reflective surface in the direction of the rotating shaft.
-
公开(公告)号：US09804385B2
公开(公告)日：2017-10-31
申请号：US14699198
申请日：2015-04-29
申请人： Yukio Itami , Shigeaki Imai , Tadashi Nakamura
发明人： Yukio Itami , Shigeaki Imai , Tadashi Nakamura
IPC分类号： H01J3/14 , G02B26/12 , G01S17/02 , G01J1/02 , G01J1/04 , G01C3/08 , G01S17/10 , G01S17/42 , G01S17/58 , G01S17/93 , G01S7/481
CPC分类号： G02B26/12 , G01C3/08 , G01J1/0271 , G01J1/0414 , G01S7/4813 , G01S7/4814 , G01S7/4815 , G01S7/4816 , G01S7/4817 , G01S17/026 , G01S17/10 , G01S17/42 , G01S17/58 , G01S17/936 , G02B26/125
摘要： An object detector and a sensing apparatus are provided. The object detector includes a light source, a light deflector configured to deflect light emitted from the light source, and a photodetector configured to detect the light that is deflected by the light deflector and then is reflected at an object, where the light deflector includes a plurality of reflection planes that rotate on a rotation axis, the reflection planes are oblique to the rotation axis and are rotationally symmetrical about the rotation axis, and the light that is emitted from the light source enters the light deflector in a direction parallel to the rotation axis. The sensing apparatus includes the object detector, and a monitoring controller configured to determine whether an object is present, and obtain movement information of the object including at least one of moving direction and moving speed of the object.
-
公开(公告)号：US20160061955A1
公开(公告)日：2016-03-03
申请号：US14813321
申请日：2015-07-30
申请人： Shigeaki Imai , Masataka Uehira , Kohji Sakai , Tadashi Nakamura , Yukio Itami
发明人： Shigeaki Imai , Masataka Uehira , Kohji Sakai , Tadashi Nakamura , Yukio Itami
CPC分类号： G01S17/936 , G01S7/4817 , G01S7/484 , G01S17/10 , G01S17/42 , G01S17/58
摘要： An optical scanner is provided including a light source configured to emit light, a light source driving device configured to drive the light source, a light deflector having at least one rotating reflection plane and configured to deflect the light emitted from the light source to a scanning area, and a light detector configured to output a signal to control a timing at which scanning of the scanning area by the light deflected by the light deflector starts, where the light detector and the scanning area are sequentially scanned in a single scanning by one reflection plane of the light deflector, and the light source driving device drives the light source using a first driving method when the light scans the light detector, and drives the light source using a second driving method that is different from the first driving method when the light scans the scanning area.
摘要翻译： 提供了一种光学扫描器，包括配置成发光的光源，被配置为驱动光源的光源驱动装置，具有至少一个旋转反射平面并被配置为使从光源发射的光偏转到扫描的光偏转器 区域，以及光检测器，被配置为输出信号以控制由光偏转器偏转的光开始扫描区域的扫描的定时，其中光检测器和扫描区域在单次扫描中通过一次反射被顺序地扫描 并且当光扫描光检测器时，光源驱动装置使用第一驱动方法驱动光源，并且当光照不同于第一驱动方法时使用与第一驱动方法不同的第二驱动方法来驱动光源 扫描扫描区域。
-
公开(公告)号：US09229225B2
公开(公告)日：2016-01-05
申请号：US13790216
申请日：2013-03-08
申请人： Yukio Itami , Tadashi Nakamura
发明人： Yukio Itami , Tadashi Nakamura
CPC分类号： G02B26/125 , B41J2/442 , B41J2/473 , G02B26/123 , G02B26/127
摘要： An optical scanning device includes a plurality of scanning optical systems that focus light beams deflected by an optical deflector onto corresponding scanning surfaces. The systems include a first scanning optical system and a second scanning optical system. The first scanning optical system and the second scanning optical system are disposed respectively at each side of a plane including a rotation axis of a polygonal-mirror optical deflector. Each of the scanning optical systems includes a synchronous detection optical system that determines a timing to start scanning the scanning surfaces with the light beams. When a time from the end of an effective scanning area in the second scanning optical system to synchronous detection in the first scanning optical system is Ta, and a time from the end of an effective scanning area in the first scanning optical system to synchronous detection in the second scanning optical system is Tb, Ta>Tb.
摘要翻译： 光学扫描装置包括多个扫描光学系统，其将由光学偏转器偏转的光束聚焦到相应的扫描表面上。 该系统包括第一扫描光学系统和第二扫描光学系统。 第一扫描光学系统和第二扫描光学系统分别设置在包括多棱镜光学偏转器的旋转轴的平面的每一侧。 每个扫描光学系统包括同步检测光学系统，其确定开始用光束扫描扫描表面的定时。 当从第二扫描光学系统中的有效扫描区域结束到第一扫描光学系统中的同步检测的时间是从第一扫描光学系统中的有效扫描区域的结束到第一扫描光学系统中的同步检测的时间 第二扫描光学系统是Tb，Ta> Tb。
-
6.发明授权Optical scanning apparatus and image forming apparatus including a multi-faceted mirror to deflect a light beam 有权光学扫描装置和图像形成装置，包括用于使光束偏转的多面镜公开(公告)号：US09097898B2
公开(公告)日：2015-08-04
申请号：US13545375
申请日：2012-07-10
CPC分类号： G02B26/123 , B41J2/473
摘要： An optical scanning apparatus scans a target surface with a light beam along a main scanning direction. The apparatus includes a light source, an optical deflector which includes a rotating multi-faceted mirror, each surface of the multi-faceted mirror acting as a reflecting surface to deflect the light beam from the light source, and a scanning optical system configured to guide the light beam deflected by the optical deflector to the target surface. An angle which is formed between the light beam toward the reflecting surface of the optical deflector and the corresponding reflecting surface and which includes a reflected light reflected from the corresponding reflecting surface is always obtuse.
摘要翻译： 光学扫描装置沿主扫描方向用光束扫描目标表面。 该装置包括光源，包括旋转的多面反射镜的光学偏转器，多面反射镜的每个表面用作反射表面以使来自光源的光束偏转;以及扫描光学系统，被配置为引导 光束由光学偏转器偏转到目标表面。 在朝向光偏转器的反射面的光束与对应的反射面之间形成有包含从对应的反射面反射的反射光的角度总是钝的。
-
公开(公告)号：US09846236B2
公开(公告)日：2017-12-19
申请号：US14813321
申请日：2015-07-30
申请人： Shigeaki Imai , Masataka Uehira , Kohji Sakai , Tadashi Nakamura , Yukio Itami
发明人： Shigeaki Imai , Masataka Uehira , Kohji Sakai , Tadashi Nakamura , Yukio Itami
CPC分类号： G01S17/936 , G01S7/4817 , G01S7/484 , G01S17/10 , G01S17/42 , G01S17/58
摘要： An optical scanner is provided including a light source configured to emit light, a light source driving device configured to drive the light source, a light deflector having at least one rotating reflection plane and configured to deflect the light emitted from the light source to a scanning area, and a light detector configured to output a signal to control a timing at which scanning of the scanning area by the light deflected by the light deflector starts, where the light detector and the scanning area are sequentially scanned in a single scanning by one reflection plane of the light deflector, and the light source driving device drives the light source using a first driving method when the light scans the light detector, and drives the light source using a second driving method that is different from the first driving method when the light scans the scanning area.
-
公开(公告)号：US20130235143A1
公开(公告)日：2013-09-12
申请号：US13790216
申请日：2013-03-08
申请人： Yukio Itami , Tadashi Nakamura
发明人： Yukio Itami , Tadashi Nakamura
CPC分类号： G02B26/125 , B41J2/442 , B41J2/473 , G02B26/123 , G02B26/127
摘要： An optical scanning device includes a plurality of scanning optical systems that focus light beams deflected by an optical deflector onto corresponding scanning surfaces. The systems include a first scanning optical system and a second scanning optical system. The first scanning optical system and the second scanning optical system are disposed respectively at each side of a plane including a rotation axis of a polygonal-mirror optical deflector. Each of the scanning optical systems includes a synchronous detection optical system that determines a timing to start scanning the scanning surfaces with the light beams. When a time from the end of an effective scanning area in the second scanning optical system to synchronous detection in the first scanning optical system is Ta, and a time from the end of an effective scanning area in the first scanning optical system to synchronous detection in the second scanning optical system is Tb, Ta>Tb.
摘要翻译： 光学扫描装置包括多个扫描光学系统，其将由光学偏转器偏转的光束聚焦到相应的扫描表面上。 该系统包括第一扫描光学系统和第二扫描光学系统。 第一扫描光学系统和第二扫描光学系统分别设置在包括多棱镜光学偏转器的旋转轴的平面的每一侧。 每个扫描光学系统包括同步检测光学系统，其确定开始用光束扫描扫描表面的定时。 当从第二扫描光学系统中的有效扫描区域结束到第一扫描光学系统中的同步检测的时间是从第一扫描光学系统中的有效扫描区域的结束到第一扫描光学系统中的同步检测的时间 第二扫描光学系统是Tb，Ta> Tb。
-
公开(公告)号：US11520019B2
公开(公告)日：2022-12-06
申请号：US16818154
申请日：2020-03-13
申请人： Kazuma Matsuura , Yuuta Yoshino , Takefumi Takizawa , Soichiro Yokota , Jun Kishiwada , Hiroyoshi Sekiguchi , Tadashi Nakamura
发明人： Kazuma Matsuura , Yuuta Yoshino , Takefumi Takizawa , Soichiro Yokota , Jun Kishiwada , Hiroyoshi Sekiguchi , Tadashi Nakamura
IPC分类号： G01S7/4861 , G01S7/481 , G01S7/4865
摘要： A light signal detection device includes a light receiving optical system configured to receive a reflection signal reflected from an object when irradiation light emitted from an irradiation unit hits the object and reflects from the object; and circuitry configured to binarize the received reflection signal using a first threshold value, based on a determination of whether the reflection signal is equal to or greater than the first threshold value; binarize the received reflection signal using a second threshold value set with a given value similar to a noise signal value, based on a determination of whether the reflection signal is equal to or greater than the second threshold value; and measure a time difference between a time of emitting the irradiation light from the irradiation unit and a time of receiving a reflection signal equal to or greater than the first threshold value or the second threshold value.
-
公开(公告)号：US10591602B2
公开(公告)日：2020-03-17
申请号：US16384629
申请日：2019-04-15
申请人： Kazuhiro Akatsu , Tadashi Nakamura , Kohji Sakai
发明人： Kazuhiro Akatsu , Tadashi Nakamura , Kohji Sakai
摘要： An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.
-
-
-
-
-
-
-
-
-
搜索结果
385 条记录 (耗时 0.027 秒)