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1. 发明申请

US20150042740A1 IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS 有权
标题翻译：图像形成方法和图像形成装置
公开(公告)号：US20150042740A1
公开(公告)日：2015-02-12
申请号：US14451815
申请日：2014-08-05
申请人： Hiroyuki SUHARA , Hiroaki TANAKA , Kohji Sakai
发明人： Hiroyuki SUHARA , Hiroaki TANAKA , Kohji Sakai
IPC分类号： B41J2/385
CPC分类号： G03G15/043
摘要： An image forming method includes: exposing a surface of an image carrier with a light based on an image pattern including an image portion and a non-image portion to form an electrostatic latent image corresponding to the image pattern. The image portion is made up of a plurality of pixels. Some of the pixels that make up the image portion are exposed with light of a first output value that is higher than a prescribed optical output value when the entire pixels corresponding to the image portion are exposed over a prescribed time period.
摘要翻译：一种图像形成方法包括：基于包括图像部分和非图像部分的图像图案，用光曝光图像载体的表面，以形成与图像图案相对应的静电潜像。图像部分由多个像素组成。当对应于图像部分的整个像素在规定的时间段内曝光时，构成图像部分的一些像素被曝光，该光的第一输出值高于规定的光学输出值。

2. 发明授权

US09235154B2 Image forming method of exposing the surface of an image carrier with light and image forming apparatus 有权
标题翻译：用光和图像形成装置曝光图像载体的表面的图像形成方法
公开(公告)号：US09235154B2
公开(公告)日：2016-01-12
申请号：US14451815
申请日：2014-08-05
申请人： Hiroyuki Suhara , Hiroaki Tanaka , Kohji Sakai
发明人： Hiroyuki Suhara , Hiroaki Tanaka , Kohji Sakai
IPC分类号： B41J2/47 , G03G15/043
CPC分类号： G03G15/043
摘要： An image forming method includes: exposing a surface of an image carrier with a light based on an image pattern including an image portion and a non-image portion to form an electrostatic latent image corresponding to the image pattern. The image portion is made up of a plurality of pixels. Some of the pixels that make up the image portion are exposed with light of a first output value that is higher than a prescribed optical output value when the entire pixels corresponding to the image portion are exposed over a prescribed time period.
摘要翻译：一种图像形成方法包括：基于包括图像部分和非图像部分的图像图案，用光曝光图像载体的表面，以形成与图像图案相对应的静电潜像。图像部分由多个像素组成。当对应于图像部分的整个像素在规定的时间段内曝光时，构成图像部分的一些像素被曝光，该光的第一输出值高于规定的光学输出值。

3. 发明授权

US11740453B2 Apparatus configured to fly light-absorbing material, apparatus configured to model three-dimensional modeled object, and method of flying light-absorbing material 有权
公开(公告)号：US11740453B2
公开(公告)日：2023-08-29
申请号：US16887366
申请日：2020-05-29
申请人： Hiroyuki Suhara , Takashi Fujita , Atsushi Takeuchi , Kohji Sakai , Asato Tamura , Shohta Kobashigawa
发明人： Hiroyuki Suhara , Takashi Fujita , Atsushi Takeuchi , Kohji Sakai , Asato Tamura , Shohta Kobashigawa
IPC分类号： G02B26/12 , G02F1/11 , G01B11/24 , H01S3/067
CPC分类号： G02B26/124 , G01B11/24 , G02F1/11 , H01S3/067
摘要： An apparatus configured to fly a light-absorbing material, includes a unit configured to irradiate a light-absorbing material absorbing light with a laser beam corresponding to a light absorption wavelength of the light-absorbing material to fly the light-absorbing material. When a preceding beam radiation region and a following beam radiation region overlap, the following beam radiation region is irradiated with the laser beam such that a beam centroid position is outside the preceding beam radiation region.

4. 发明授权

US06999208B2 Optical scanner, optical scanning method, scanning image forming optical system, optical scanning lens and image forming apparatus 失效
标题翻译：光学扫描仪，光学扫描方法，扫描成像光学系统，光学扫描透镜和图像形成装置
公开(公告)号：US06999208B2
公开(公告)日：2006-02-14
申请号：US09955181
申请日：2001-09-19
申请人： Seizo Suzuki , Hiromichi Atsuumi , Kohji Sakai , Magane Aoki , Hiroyuki Suhara
发明人： Seizo Suzuki , Hiromichi Atsuumi , Kohji Sakai , Magane Aoki , Hiroyuki Suhara
IPC分类号： H04N1/04
CPC分类号： G02B26/127
摘要： An optical scanner which performs optical scanning of a surface to be scanned by deflecting a luminous flux having a wavelength λ from a light source by means of an optical deflector, and condensing the deflected flux toward the surface to be scanned through a scanning image forming optical system, thereby forming an optical spot on the surface to be scanned. The scanning image forming optical system has at least one lens, and when the focal length fσ in the main scanning direction at a surface accuracy σi is defined as follows: fσ={2.6846 λ×√(k)×fm2/ω2}−fm where, fm represents the focal length in the main scanning direction of the scanning image forming optical system; k represents the number of lens surfaces; ω represents the aimed spot diameter of the optical spot in the main scanning direction at an image height of 0; σI represents the surface accuracy of the i-th lens surface as counted from the optical deflector side; n represents the refractive index of material of the lens having the i-th lens surface; and 1/l represents the spatial frequency in the main scanning direction on the lens surface; then, the surface accuracy σi, the focal length fσ, the refractive index n, and the spatial frequency 1/L satisfy, for each lens surface, the following condition: 0
摘要翻译：一种光学扫描器，其通过借助于光学偏转器偏转来自光源的具有波长λ的光束来执行对要扫描的表面的光学扫描，并且通过扫描图像形成光学器件将被偏转的通量朝向被扫描的表面聚焦从而在待扫描的表面上形成光斑。扫描图像形成光学系统具有至少一个透镜，并且当以表面精度sigmai的主扫描方向的焦距f sigma定义如下时：fsigma = {2.6846lambdax√（k）xfm 2

5. 发明授权

US10302767B2 Object detector and sensor 有权
公开(公告)号：US10302767B2
公开(公告)日：2019-05-28
申请号：US15729324
申请日：2017-10-10
申请人： Kazuhiro Akatsu , Tadashi Nakamura , Kohji Sakai
发明人： Kazuhiro Akatsu , Tadashi Nakamura , Kohji Sakai
IPC分类号： G01S17/42 , G01S7/486 , H05B37/02 , G01S17/93 , G01S7/481 , G01S7/484 , G01S7/51
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.

6. 发明授权

US10148064B2 Semiconductor laser driving apparatus, optical scanning apparatus, object detection apparatus, and mobile apparatus 有权
公开(公告)号：US10148064B2
公开(公告)日：2018-12-04
申请号：US15058730
申请日：2016-03-02
申请人： Kohji Sakai , Masataka Uehira , Shigeaki Imai , Tadashi Nakamura
发明人： Kohji Sakai , Masataka Uehira , Shigeaki Imai , Tadashi Nakamura
IPC分类号： H01S5/042 , G01S17/10 , G01S17/42 , G01S7/484 , G01S7/497 , G02B26/12 , G01S17/02 , G01S17/93 , G01S7/481
摘要： A semiconductor laser driving apparatus for driving a semiconductor laser serving as a light source for optical scanning, the semiconductor laser driving apparatus includes: first and second switching elements that are each capable of switching energization of the semiconductor laser ON/OFF; a first pulse generation unit that intermittently outputs first driving pulses to the first switching element in a first time slot; and a second pulse generation unit that outputs a second driving pulse to the second switching element in a second time slot different from the first time slot.

7. 发明授权

US10031228B2 Object detecting apparatus 有权
公开(公告)号：US10031228B2
公开(公告)日：2018-07-24
申请号：US14523042
申请日：2014-10-24
申请人： Kohji Sakai , Tadashi Nakamura
发明人： Kohji Sakai , Tadashi Nakamura
IPC分类号： G01C3/08 , G01S17/02 , G01S17/42 , G01S17/58 , G01S17/93 , G01S7/481 , G01S7/484 , G06K9/00 , G06K9/20 , G08G1/16
摘要： An object detecting apparatus includes: a light projection unit that is an array light source in which each of a plurality of light emission areas emits light, an optical scanning unit that performs scanning with the light, which is emitted from the light projection unit, in a first direction, and a light receiving unit that receives reflected light which is the light, with which the scanning is performed, being reflected by an object, and an object information acquiring unit that detects presence/absence of the object based on emission timing at which the light is emitted from the light projection unit and light receiving timing at which the light receiving unit receives the reflected light.

8. 发明申请

US20080055692A1 OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS 有权
标题翻译：光学扫描装置和图像形成装置
公开(公告)号：US20080055692A1
公开(公告)日：2008-03-06
申请号：US11844643
申请日：2007-08-24
申请人： Kenichiroh Saisho , Yoshinori Hayashi , Takeshi Ueda , Kohji Sakai , Daisuke Ichii
发明人： Kenichiroh Saisho , Yoshinori Hayashi , Takeshi Ueda , Kohji Sakai , Daisuke Ichii
IPC分类号： G02B26/10 , G02F1/00
CPC分类号： G02B26/124 , G02B5/1876 , H04N1/1135 , H04N2201/0471 , H04N2201/04729 , H04N2201/04732 , H04N2201/04744
摘要： A coupling lens arranged on an optical path of an optical beam from a VCSEL, which has a refraction plane and a diffraction plane that respectively change a power according to a temperature change and suppresses a beam-waist position change in a main-scanning direction and a sub-scanning directions on the scanning surface caused by the temperature change, by a wavelength change of the optical beam caused by power changes of the refraction plane and the diffraction plane and the temperature change. A deflecting unit deflects the optical beam that passed through the coupling lens. A scanning optical system condenses a deflected optical beam on the scanning surface.
摘要翻译：耦合透镜，布置在来自VCSEL的光束的光路上，所述光束具有根据温度变化分别改变功率的折射面和衍射面，并抑制主扫描方向上的束腰位置变化，通过由折射平面和衍射面的功率变化引起的光束的波长变化和温度变化，由温度变化引起的扫描表面上的副扫描方向。偏转单元使通过耦合透镜的光束偏转。扫描光学系统将偏转的光束冷凝在扫描表面上。

9. 发明申请

US20080024589A1 MULTI-BEAM OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS 有权
标题翻译：多波束光学扫描装置和图像形成装置
公开(公告)号：US20080024589A1
公开(公告)日：2008-01-31
申请号：US11773076
申请日：2007-07-03
申请人： Takeshi Ueda , Kohji Sakai , Yoshinori Hayashi
发明人： Takeshi Ueda , Kohji Sakai , Yoshinori Hayashi
IPC分类号： G02B26/10
CPC分类号： G02B26/123 , G02B26/124 , G02B26/125
摘要： A multi-beam scanning device is disclosed that is able to realize a stable and small beam spot and realize stable scanning line intervals between plural light beams. The multi-beam optical scanning device includes a first optical system which has a first lens for coupling the light beams from the light sources, and a second lens which is an anamorphic element having power at least in a sub scanning direction and for guiding the light beams from the first lens to the deflection unit; and a second optical system. At least the second lens includes a diffracting surface having power. Magnifications of the whole optical system in a main scanning direction (βm0) and in a sub scanning direction (βs0), and a magnification of the second optical system (βs2) in a sub scanning direction satisfy |βm0|>|βs0|, and |βs0|>|s2|, and the power of the diffracting surface of the first lens in the main scanning direction (P1m), that in the sub scanning direction (P1s), and the power of the diffracting surface of the second lens in the sub scanning direction (P2s) satisfy |P2s|>|P1m| and |P2s|>|P1s|.
摘要翻译：公开了一种多光束扫描装置，其能够实现稳定且小的光点，并实现多个光束之间的稳定的扫描线间隔。多光束光学扫描装置包括第一光学系统，其具有用于耦合来自光源的光束的第一透镜和作为至少在副扫描方向上具有功率并用于引导光的变形元件的第二透镜从第一透镜到偏转单元的光束; 和第二光学系统。至少第二透镜包括具有光焦度的衍射表面。整个光学系统在主扫描方向（反射0）和副扫描方向（betas 0）上的放大率以及副扫描方向上的第二光学系统（betas 2）的倍率满足| beta s 0 | ，| betas 0 |> | s 2 | ，以及第一透镜的衍射面在主扫描方向（P 1 m），副扫描方向（P 1 s）上的功率和第二透镜在副扫描中的衍射面的光焦度方向（P 2 s）满足| P 2 s |> | P 1 m | 和| P 2 s |> | P 1 s |。

10. 发明授权

US07253937B2 Multi-beam optical scanning device and image forming apparatus 有权
标题翻译：多光束光学扫描装置和成像装置
公开(公告)号：US07253937B2
公开(公告)日：2007-08-07
申请号：US11543212
申请日：2006-10-05
申请人： Takeshi Ueda , Kohji Sakai , Yoshinori Hayashi
发明人： Takeshi Ueda , Kohji Sakai , Yoshinori Hayashi
IPC分类号： G02B26/08 , B41J27/00
CPC分类号： G02B26/123 , G02B26/124 , G02B26/125
摘要： A multi-beam scanning device is disclosed that is able to realize a stable and small beam spot and realize stable scanning line intervals between plural light beams. The multi-beam optical scanning device includes a first optical system which has a first lens for coupling the light beams from the light sources, and a second lens which is an anamorphic element having power at least in a sub scanning direction and for guiding the light beams from the first lens to the deflection unit; and a second optical system. At least the second lens includes a diffracting surface having power. Magnifications of the whole optical system in a main scanning direction (βm0) and in a sub scanning direction (βs0), and a magnification of the second optical system (βs2) in a sub scanning direction satisfy |βm0|>|βs0|, and |βs0|>|βs2|, and the power of the diffracting surface of the first lens in the main scanning direction (P1m), that in the sub scanning direction (P1s), and the power of the diffracting surface of the second lens in the sub scanning direction (P2s) satisfy |P2s|>|P1m| and |P2s|>|P1s|.
摘要翻译：公开了一种多光束扫描装置，其能够实现稳定且小的光点，并实现多个光束之间的稳定的扫描线间隔。多光束光学扫描装置包括第一光学系统，其具有用于耦合来自光源的光束的第一透镜和作为至少在副扫描方向上具有功率并用于引导光的变形元件的第二透镜从第一透镜到偏转单元的光束; 和第二光学系统。至少第二透镜包括具有光焦度的衍射表面。整个光学系统在主扫描方向（BETam 0）和副扫描方向（betas 0）上的放大率以及副扫描方向上的第二光学系统（betas 2）的倍率满足| betam 0 |> | betas 0 |和| betas 0 |> | betas 2 |，第一透镜的衍射面在主扫描方向（P 1 m），副扫描方向（P 1 s）和第二透镜的副扫描方向（P 2 s）的衍射面的功率满足| P 2 s |> | P 1 m | 和| P 2 s |> | P 1 s |。

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