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21. 发明授权

US09348121B2 Magnification optical system 有权
公开(公告)号：US09348121B2
公开(公告)日：2016-05-24
申请号：US14703551
申请日：2015-05-04
申请人： Hibiki Tatsuno , Kiichiro Nishina , Yasuyuki Shibayama , Takanobu Osaka , Makoto Hirakawa
发明人： Hibiki Tatsuno , Kiichiro Nishina , Yasuyuki Shibayama , Takanobu Osaka , Makoto Hirakawa
IPC分类号： G02B17/00 , G02B13/16 , G02B7/04 , G02B17/08 , G03B21/14
CPC分类号： G02B13/16 , G02B7/04 , G02B7/10 , G02B17/08 , G03B21/147
摘要： A magnification optical system forms an enlarged image of an object. It includes a refractive optical system including a plurality of lens groups; and a mirror train including a curved mirror, arranged in this order from an object side, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of a conjugate surface on the object side, and a second focus structure configured to move the respective lens groups along the normal line of the conjugate surface on the object side by different amounts from those of the first focus structure.

22. 发明授权

US08085455B2 Optical scanning device, method of adjusting the same, and image forming apparatus 有权
标题翻译：光学扫描装置及其调整方法以及成像装置
公开(公告)号：US08085455B2
公开(公告)日：2011-12-27
申请号：US12575954
申请日：2009-10-08
申请人： Makoto Hirakawa
发明人： Makoto Hirakawa
IPC分类号： G02B26/08
CPC分类号： G02B26/123 , G02B26/124
摘要： A coupling optical system couples a light beam emitted from a light source that includes a two-dimensional array of light-emitting elements, including a first optical element having a positive power and a second optical element that has a negative power and receives the light beam passed through the first optical element. An incident surface and an output surface of the second optical element are concave. An absolute value of a paraxial curvature radius of the incident surface is larger than that of the output surface. A scanning optical system focuses the light beam that passed through the coupling optical system and deflected by a deflector on the target surface.
摘要翻译：耦合光学系统耦合从包括具有正功率的第一光学元件和具有负功率的第二光学元件的发光元件的二维阵列的光源发射的光束，并且接收光束通过第一光学元件。第二光学元件的入射表面和输出表面是凹形的。入射面的近轴曲率半径的绝对值大于输出面的绝对值。扫描光学系统将通过耦合光学系统并通过偏转器偏转的光束聚焦在目标表面上。

23. 发明授权

US07738007B2 Optical scanning device and method for adjusting errors 有权
标题翻译：光学扫描装置及误差调整方法
公开(公告)号：US07738007B2
公开(公告)日：2010-06-15
申请号：US12190182
申请日：2008-08-12
申请人： Daisuke Ichii , Makoto Hirakawa
发明人： Daisuke Ichii , Makoto Hirakawa
IPC分类号： B41J15/14 , B41J27/00
CPC分类号： G03G15/0435
摘要： In an optical scanning device, a lateral magnification in a direction corresponding to a sub scanning direction of an optical system is adjusted to be small by a coupling optical system that includes a first lens and a second lens. As a result, scanning by a plurality of light beams can be performed with high precision while avoiding high costs.
摘要翻译：在光学扫描装置中，通过包括第一透镜和第二透镜的耦合光学系统将与光学系统的副扫描方向相对应的方向上的横向放大率调整到较小。结果，可以以高精度执行多个光束的扫描，同时避免高成本。

24. 发明申请

US20100097679A1 OPTICAL SCANNING DEVICE, METHOD OF ADJUSTING THE SAME, AND IMAGE FORMING APPARATUS 有权
标题翻译：光学扫描装置，调整它们的方法和图像形成装置
公开(公告)号：US20100097679A1
公开(公告)日：2010-04-22
申请号：US12575954
申请日：2009-10-08
申请人： Makoto Hirakawa
发明人： Makoto Hirakawa
IPC分类号： G02B26/10
CPC分类号： G02B26/123 , G02B26/124
摘要： A coupling optical system couples a light beam emitted from a light source that includes a two-dimensional array of light-emitting elements, including a first optical element having a positive power and a second optical element that has a negative power and receives the light beam passed through the first optical element. An incident surface and an output surface of the second optical element are concave. An absolute value of a paraxial curvature radius of the incident surface is larger than that of the output surface. A scanning optical system focuses the light beam that passed through the coupling optical system and deflected by a deflector on the target surface.
摘要翻译：耦合光学系统耦合从包括具有正功率的第一光学元件和具有负功率的第二光学元件的发光元件的二维阵列的光源发射的光束，并且接收光束通过第一光学元件。第二光学元件的入射表面和输出表面是凹形的。入射面的近轴曲率半径的绝对值大于输出面的绝对值。扫描光学系统将通过耦合光学系统并通过偏转器偏转的光束聚焦在目标表面上。

25. 发明授权

US07623280B2 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：US07623280B2
公开(公告)日：2009-11-24
申请号：US12107379
申请日：2008-04-22
申请人： Makoto Hirakawa , Yoshinori Hayashi , Daisuke Ichii
发明人： Makoto Hirakawa , Yoshinori Hayashi , Daisuke Ichii
IPC分类号： G02B26/08
CPC分类号： G02B26/124
摘要： An optical scanning device includes a light source configured to emit light beams, a deflector to deflect the light beams emitted from the light source, a first optical assembly which is positioned upon a light path of the light beams traveling from the light source to the deflector and which forms an image with the light beams emitted from the light source in a sub scanning direction in a vicinity of the deflector, and a second optical assembly to form the image upon a surface to be scanned with the light beams deflected by the deflector. A principal ray of two of the light beams incident to the first optical assembly, which are located at each respective terminus in the sub scanning direction, are set so as to advance so as either to remain mutually parallel to or converge with one another after passing through the first optical assembly.
摘要翻译：光学扫描装置包括被配置为发射光束的光源，用于使从光源发射的光束偏转的偏转器，位于从光源传播到导流板的光束的光路上的第一光学组件并且在偏转器附近以副扫描方向形成从光源发射的光束的图像，以及第二光学组件，用于在被偏转器偏转的光束的待扫描表面上形成图像。入射到第一光学组件的两个光束的主射线位于副扫描方向上的每个相应的末端，被设置为前进，以便在通过后保持彼此相互平行或相互会聚通过第一光学组件。

26. 发明申请

US20090251753A1 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：US20090251753A1
公开(公告)日：2009-10-08
申请号：US12415405
申请日：2009-03-31
申请人： Makoto Hirakawa , Yoshinori Hayashi
发明人： Makoto Hirakawa , Yoshinori Hayashi
IPC分类号： G02B26/10 , G02B5/18
CPC分类号： G02B26/124 , G02B5/1814
摘要： An optical scanning device includes a diffractive optical element. The diffractive optical element is a hybrid lens in which a resin layer is joined to a glass-lens base material, and a diffractive surface is provided in the resin layer. The diffractive surface has a multi-step structure including a plurality of zonal surfaces and a plurality of step surfaces.
摘要翻译：光学扫描装置包括衍射光学元件。衍射光学元件是将树脂层接合到玻璃透镜基材上的混合透镜，并且在树脂层中设置衍射面。衍射面具有包括多个区域表面和多个台阶表面的多步结构。

27. 发明申请

US20090195849A1 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：US20090195849A1
公开(公告)日：2009-08-06
申请号：US12365727
申请日：2009-02-04
申请人： DAISUKE ICHII , Makoto Hirakawa
发明人： DAISUKE ICHII , Makoto Hirakawa
IPC分类号： G02B26/10
CPC分类号： G02B26/124
摘要： A first optical system couples a light beam from a light source, including a first lens made of glass with a positive power and a second lens made of plastic with a negative power. A second optical system focuses the light beam from the first optical system onto a scanning surface and moves a light spot on the scanning surface in a main-scanning direction. One of an incidence plane and an output plane of the first lens is spherical while the other is spherical or flat. A cross-sectional plane of the second lens along one of the main-scanning direction and a sub-scanning direction has a non-arc shape on at least one of the incidence plane and the output plane.
摘要翻译：第一光学系统将来自光源的光束耦合，包括具有正光焦度的由玻璃制成的第一透镜和由具有负光焦度的塑料制成的第二透镜。第二光学系统将来自第一光学系统的光束聚焦到扫描表面上，并沿主扫描方向移动扫描表面上的光斑。第一透镜的入射面和输出面中的一个是球形的，而另一个是球形或平坦的。沿着主扫描方向和副扫描方向之一的第二透镜的横截面在入射面和输出平面中的至少一个上具有非弧形。

28. 发明申请

US20190219820A1 IMAGE DISPLAY APPARATUS AND MOBILE APPARATUS 审中-公开
公开(公告)号：US20190219820A1
公开(公告)日：2019-07-18
申请号：US16203697
申请日：2018-11-29
申请人： Makoto Hirakawa
发明人： Makoto Hirakawa
IPC分类号： G02B27/01 , G02B27/24 , G02B26/10 , G02B3/00
CPC分类号： G02B27/0101 , G02B2027/011 , G02B2027/0118 , G02B2027/013 , G02B2027/0145
摘要： An image display apparatus mountable on a mobile object includes an image light generator and a transmissive member. The image light generator is configured to generate image light and emit the image light to a transmission and reflection member mounted on the mobile object. The transmissive member is disposed in an optical path of the image light between the image light generator and the transmission and reflection member. The transmissive member is configured to transmit the image light from the image light generator. The transmissive member has a cross section with a predetermined curve, the cross section being orthogonal to a predetermined direction inclined with reference to a virtual plane orthogonal to a horizontal direction of the mobile object.

29. 发明授权

US09894333B2 Light source unit and image display apparatus 有权
公开(公告)号：US09894333B2
公开(公告)日：2018-02-13
申请号：US15150827
申请日：2016-05-10
申请人： Makoto Hirakawa
发明人： Makoto Hirakawa
IPC分类号： G02B26/08 , H04N9/31 , G02B27/10 , B60K35/00 , G02B27/01 , H04N9/14 , G02B26/10 , G03B21/20
CPC分类号： H04N9/317 , B60K35/00 , B60K2350/2056 , G02B26/0858 , G02B26/101 , G02B27/0101 , G02B27/104 , G02B2027/011 , G03B21/2013 , G03B21/2033 , H04N9/14 , H04N9/3129 , H04N9/3164
摘要： A light source unit mountable to an image display apparatus for irradiating scan light to an optical scanning system to generate an image includes a plurality of light emitters to emit corresponding lights having different wavelengths, a plurality of coupling lenses respectively disposed for the plurality of light emitters to respectively pass through the lights emitted from the plurality of light emitters, and a plurality of aperture-formed members respectively disposed for the plurality of coupling lenses to respectively pass through the lights coming from the coupling lenses, each of the plurality of aperture-formed members formed of an aperture having an aperture size set differently depending on the wavelengths of the lights emitted from the plurality of light emitters.

30. 发明授权

US09784952B2 Magnification optical system 有权
公开(公告)号：US09784952B2
公开(公告)日：2017-10-10
申请号：US15132704
申请日：2016-04-19
申请人： Hibiki Tatsuno , Kiichiro Nishina , Yasuyuki Shibayama , Takanobu Osaka , Makoto Hirakawa
发明人： Hibiki Tatsuno , Kiichiro Nishina , Yasuyuki Shibayama , Takanobu Osaka , Makoto Hirakawa
IPC分类号： G02B17/00 , G02B13/16 , G02B17/08 , G02B7/10 , G03B21/14 , G02B7/04
摘要： A magnification optical system forms an enlarged image of an object. It includes a refractive optical system including a plurality of lens groups; and a mirror train including a curved mirror, arranged in this order from an object side, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of a conjugate surface on the object side, and a second focus structure configured to move the respective lens groups along the normal line of the conjugate surface on the object side by different amounts from those of the first focus structure.

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