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1. 发明授权

US07688491B2 Diffractive-optical element, scanning optical system, optical scanner, and image forming apparatus 有权
$Diffractive-optical element, scanning optical system, optical scanner, and image forming apparatus$
标题翻译：衍射光学元件，扫描光学系统，光学扫描仪和成像设备
公开(公告)号：US07688491B2
公开(公告)日：2010-03-30
申请号：US11850401
申请日：2007-09-05
申请人： Kenichiro Saisho , Yoshinori Hayashi , Kohji Sakai
发明人： Kenichiro Saisho , Yoshinori Hayashi , Kohji Sakai
IPC分类号： G02B26/08
CPC分类号： G02B26/125 , G02B5/1895 , G02B27/0043 , G02B27/4227 , G02B27/4283
摘要： A diffractive-optical element that is transparent includes a diffraction surface that is formed by a step. A width of the step is set substantially equal to a common multiple of λi/{n(λi)−1} for two or more wavelengths, where λi (i=1, 2, . . . ) is a wavelength and n(λi) is a refractive index with respect to the wavelength λi.
摘要翻译：透明的衍射光学元件包括通过台阶形成的衍射面。对于两个或更多个波长，步长的宽度设定为基本上等于λi/ {n（λi）-1}的公倍数，其中λi（i = 1,2，...）是波长，n（λi ）是相对于波长λi的折射率。

2. 发明申请

US20080068689A1 DIFFRACTIVE-OPTICAL ELEMENT, SCANNING OPTICAL SYSTEM, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS 有权
标题翻译：衍射光学元件，扫描光学系统，光学扫描仪和图像形成装置
公开(公告)号：US20080068689A1
公开(公告)日：2008-03-20
申请号：US11850401
申请日：2007-09-05
申请人： Kenichiro SAISHO , Yoshinori Hayashi , Kohji Sakai
发明人： Kenichiro SAISHO , Yoshinori Hayashi , Kohji Sakai
IPC分类号： G02B26/10 , G02B5/18
CPC分类号： G02B26/125 , G02B5/1895 , G02B27/0043 , G02B27/4227 , G02B27/4283
摘要： A diffractive-optical element that is transparent includes a diffraction surface that is formed by a step. A width of the step is set substantially equal to a common multiple of λi/{n(λi)−1} for two or more wavelengths, where λi (i=1, 2, . . . ) is a wavelength and n(λi) is a refractive index with respect to the wavelength λi.
摘要翻译：透明的衍射光学元件包括通过台阶形成的衍射面。步长的宽度被设置为基本上等于两个或更多个波长的λ的共同倍数，其中λ_。

3. 发明授权

US07663657B2 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：US07663657B2
公开(公告)日：2010-02-16
申请号：US11782268
申请日：2007-07-24
申请人： Daisuke Ichii , Yoshinori Hayashi , Takeshi Ueda , Kohji Sakai , Kenichiro Saisho
发明人： Daisuke Ichii , Yoshinori Hayashi , Takeshi Ueda , Kohji Sakai , Kenichiro Saisho
IPC分类号： B41J15/14 , B41J27/00
CPC分类号： G03G15/326 , B41J2/455 , B41J2/473 , G02B13/0005 , G02B26/125 , G03G15/0435 , G03G2215/0404
摘要： An optical scanning device includes a light source having light emitting points for emitting light beams, a coupling optical element that couples the light beams, a deflecting unit that deflects and scans the light beams, and a scanning optical system that focus the light beams to form an image. The optical scanning device satisfies the following condition: F tan(θ/2)+A
摘要翻译：光学扫描装置包括具有用于发射光束的发光点的光源，耦合光束的耦合光学元件，偏转和扫描光束的偏转单元，以及聚焦光束以形成的扫描光学系统一个图像。光学扫描装置满足以下条件：F tan（θ/ 2）+ A

4. 发明申请

US20080025759A1 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：US20080025759A1
公开(公告)日：2008-01-31
申请号：US11782268
申请日：2007-07-24
申请人： Daisuke Ichii , Yoshinori Hayashi , Takeshi Ueda , Kohji Sakai , Kenichiro Saisho
发明人： Daisuke Ichii , Yoshinori Hayashi , Takeshi Ueda , Kohji Sakai , Kenichiro Saisho
IPC分类号： G03G15/045 , G02B26/08
CPC分类号： G03G15/326 , B41J2/455 , B41J2/473 , G02B13/0005 , G02B26/125 , G03G15/0435 , G03G2215/0404
摘要： An optical scanning device includes a light source having light emitting points for emitting light beams, a coupling optical element that couples the light beams, a deflecting unit that deflects and scans the light beams, and a scanning optical system that focus the light beams to form an image. The optical scanning device satisfies the following condition: F tan(θ/2)+A
摘要翻译：光学扫描装置包括具有用于发射光束的发光点的光源，耦合光束的耦合光学元件，偏转和扫描光束的偏转单元，以及聚焦光束以形成的扫描光学系统一个图像。光扫描装置满足以下条件：<？in-line-formula description =“In-line formula”end =“lead”？> F tan（θ/ 2）+ A 其中A是发光点和耦合光学元件的光轴之间的最大距离，θ是发散角（全宽半最大值）的光束，F是耦合光学元件的焦距，D是耦合光学元件的有效半径。

5. 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。

6. 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 |。

7. 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 |。

8. 发明申请

US20070091398A1 Multi-beam optical scanning device and image forming apparatus 有权
公开(公告)号：US20070091398A1
公开(公告)日：2007-04-26
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： G02B5/32
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|.

9. 发明申请

US20080068693A1 OPTICAL SCANNER AND IMAGE FORMING APPARATUS USING OPTICAL SCANNER 有权
标题翻译：光学扫描仪和使用光学扫描仪的图像形成装置
公开(公告)号：US20080068693A1
公开(公告)日：2008-03-20
申请号：US11857811
申请日：2007-09-19
申请人： Yoshinori HAYASHI , Kohji Sakai , Takeshi Ueda , Daisuke Ichii , Kenichiroh Saisho
发明人： Yoshinori HAYASHI , Kohji Sakai , Takeshi Ueda , Daisuke Ichii , Kenichiroh Saisho
IPC分类号： G02B26/10
CPC分类号： G02B26/127 , G02B27/40
摘要： An optical axis of at least one surface of a resin-made diffracting lens is shifted in a main scanning direction with respect to an incident beam. A synchronous detection can cancel a problem of a misalignment in the main scanning direction due to a temperature variation. A light reflected from a second surface of the resin-made diffractive lens condenses on a position that is displaced in an optical axis direction from an optical beam outgoing point of a semiconductor laser, and thereby the light reflected again from the semiconductor laser does not form an image on a scanned surface and an impact on the image becomes low.
摘要翻译：树脂衍射透镜的至少一个表面的光轴相对于入射光束在主扫描方向上偏移。同步检测可以消除由于温度变化而导致的主扫描方向上的未对准的问题。从树脂衍射透镜的第二表面反射的光在从半导体激光器的光束出射点沿光轴方向位移的位置聚集，从而半导体激光器再次反射的光不形成扫描表面上的图像和对图像的影响变低。

10. 发明申请

US20060077500A1 Optical scanning device in image forming apparatus 有权
标题翻译：图像形成装置中的光学扫描装置
公开(公告)号：US20060077500A1
公开(公告)日：2006-04-13
申请号：US11223051
申请日：2005-09-12
申请人： Yoshinori Hayashi , Takeshi Ueda , Kohji Sakai
发明人： Yoshinori Hayashi , Takeshi Ueda , Kohji Sakai
IPC分类号： G02B26/08
CPC分类号： G02B19/0057 , G02B7/008 , G02B19/0014 , G02B26/124 , G02B26/125 , G02B27/0031 , G02B27/4211 , G02B27/4227 , G02B27/4283
摘要： A first optical system guides a light beam from a light source to an optical deflector, and a second optical system converges the light beam deflected by the optical deflector on a surface to be scanned. The first optical system includes at least one resin lens having a diffractive surface. The second optical system includes at least one resin optical element. A beam diameter depth in a main scanning direction, Wm, that can have a maximum intensity of 1/e2, satisfies conditions Δm1+Δm2+Δm3−Δd1×(f2/f1)2 0 and Δm2
摘要翻译：第一光学系统将来自光源的光束引导到光学偏转器，并且第二光学系统将由光学偏转器偏转的光束会聚在待扫描的表面上。第一光学系统包括至少一个具有衍射表面的树脂透镜。第二光学系统包括至少一个树脂光学元件。主扫描方向的光束直径深度Wm可以具有最大强度为1 / e <2>的条件满足条件<？in-line-formula description =“In-line Formulas”end = “lead”？> Deltam1 + Deltam2 + Deltam3-Deltad1x（f2 / f1） <？in-line-formula description =”In-line Formulas“end =”lead“？> Deltad1> 0和Deltam2 <0。（2）<？in-line-formula description =“In-line Formulas”end =“tail”？>

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