公开(公告)号：US08462188B2

公开(公告)日：2013-06-11

申请号：US12786123

申请日：2010-05-24

申请人： Hidekazu Shimomura

发明人： Hidekazu Shimomura

IPC分类号： B41J15/14 ,  B41J27/00

CPC分类号： G03G15/011 ,  G03G15/04036 ,  G03G15/0409 ,  G03G15/0435 ,  G03G2215/0404

摘要： Light sources emit light beams onto deflecting surfaces of a deflecting unit through incident optical systems. The deflecting unit deflects the light beams in a uniform direction to form images onto different surfaces to be scanned through imaging optical systems. An optical path length, or a distance from a deflection point of the deflecting unit to a surface to be scanned, of an imaging optical system to form an image onto a surface to be scanned closest to the deflecting unit is different from that of an imaging optical system to form an image onto a surface to be scanned farthest from the deflecting unit. Also, the following condition is satisfied: 0.85

摘要翻译： 光源通过入射光学系统将光束发射到偏转单元的偏转表面上。 偏转单元使光束沿均匀的方向偏转，以在不同的表面上形成图像，以通过成像光学系统进行扫描。 成像光学系统的光路长度或距离偏转单元的偏转点到待扫描表面的距离，以在最靠近偏转单元的待扫描表面上形成图像不同于成像 光学系统以在要偏离偏转单元的最远的表面上形成图像。 此外，满足以下条件：0.85

公开(公告)号：US07522324B2

公开(公告)日：2009-04-21

申请号：US11962053

申请日：2007-12-20

申请人： Hidekazu Shimomura

发明人： Hidekazu Shimomura

IPC分类号： G02B26/08 ,  B41J27/00

CPC分类号： G02B26/126 ,  G02B26/125

摘要： An optical scanning device and an image forming apparatus having the same include a light source, a deflecting system, an imaging optical system with at least one imaging optical element for imaging a light beam deflected by the deflecting system on a surface to be scanned, and at least one reflection type optical element disposed between the imaging optical element and the scanned surface, wherein the deflected light beam passes through a first transmission surface and a second transmission surface of the imaging optical element in this order and, after being reflected by the reflection type optical element, the light beam then passes through a third transmission surfaced and a fourth transmission surface of the imaging optical element in this order, and wherein a relation |øM/ø|

摘要翻译： 光学扫描装置及具有该光学扫描装置的图像形成装置包括光源，偏转系统，具有至少一个成像光学元件的成像光学系统，用于将由偏转系统偏转的光束成像在待扫描的表面上，以及 所述至少一个反射型光学元件设置在所述成像光学元件和所述被扫描表面之间，其中所述偏转光束依次穿过所述成像光学元件的第一透射面和第二透射面，并且在被所述反射 然后光束依次通过成像光学元件的第三透射表面和第四透射表面，并且其中øM/ø| <0.1，其中ø是在该光学元件内的轴向组合功率 光束再次通过的成像光学元件的主扫描部分，以及øM是主sca内的轴向组合功率 n部分的反射型光学元件。

公开(公告)号：US20080151326A1

公开(公告)日：2008-06-26

申请号：US11962053

申请日：2007-12-20

申请人： Hidekazu Shimomura

发明人： Hidekazu Shimomura

IPC分类号： H04N1/04

CPC分类号： G02B26/126 ,  G02B26/125

摘要： An optical scanning device and an image forming apparatus having the same include a light source, a deflecting system, an imaging optical system with at least one imaging optical element for imaging a light beam deflected by the deflecting system on a surface to be scanned, and at least one reflection type optical element disposed between the imaging optical element and the scanned surface, wherein the deflected light beam passes through a first transmission surface and a second transmission surface of the imaging optical element in this order and, after being reflected by the reflection type optical element, the light beam then passes through a third transmission surfaced and a fourth transmission surface of the imaging optical element in this order, and wherein a relation |øM/ø|

摘要翻译： 光学扫描装置及具有该光学扫描装置的图像形成装置包括光源，偏转系统，具有至少一个成像光学元件的成像光学系统，用于将由偏转系统偏转的光束成像在待扫描的表面上，以及 所述至少一个反射型光学元件设置在所述成像光学元件和所述被扫描表面之间，其中所述偏转光束依次穿过所述成像光学元件的第一透射面和第二透射面，并且在被所述反射 然后光束依次通过成像光学元件的第三透射表面和第四透射表面，并且其中øM/ø| <0.1，其中ø是在该光学元件内的轴向组合功率 光束再次通过的成像光学元件的主扫描部分，以及øM是主sca内的轴向组合功率 n部分的反射型光学元件。

公开(公告)号：US07218434B2

公开(公告)日：2007-05-15

申请号：US11136516

申请日：2005-05-25

申请人： Hidekazu Shimomura

发明人： Hidekazu Shimomura

IPC分类号： G02B26/08

CPC分类号： G02B26/125 ,  B41J2/471

摘要： An optical scanning apparatus in which streaks in an image or unevenness in density of an image caused by influences of dusts, scratches and toner etc on the surface of a reflecting member are unlikely to occur and excellent images can be always obtained and an image forming apparatus equipped with such an optical scanning apparatus are to be achieved. The apparatus comprises a first optical system for guiding a light beam emitted from light source unit to deflecting unit, the deflecting unit for reflecting and deflecting the light beam from the first optical system, a second optical system for guiding the light beam reflected and deflected by the deflecting unit onto a surface to be scanned through reflecting unit including n (n is an integer equal to or larger than 1) reflecting members. The apparatus satisfies the following conditions for the F-number Fnomain (mm) with respect to a main scanning cross section of an exit side of the second optical system and the smallest beam area Smin (mm2) among beam areas on reflecting surfaces of the n reflecting members on which a light beam is reflected during traveling on the optical axis of the second optical system: 70

摘要翻译： 一种光学扫描装置，其中不可能发生图像中的条纹或由反射构件的表面上的灰尘，划痕和调色剂等的影响引起的图像的浓度不均匀，并且可以总是获得优异的图像，并且形成图像 要实现配备这种光学扫描装置的装置。 该装置包括用于将从光源单元发射的光束引导到偏转单元的第一光学系统，用于使来自第一光学系统的光束反射和偏转的偏转单元，用于引导由第一光学系统反射和偏转的光束的第二光学系统 偏转单元通过反射单元反射到要扫描的表面上，该反射单元包括n（n是等于或大于1的整数）的反射构件。 该装置相对于第二光学系统的出射侧的主扫描截面和最小光束面积Smin（mm 2 （0.004 / Smin）xn <0.03。

公开(公告)号：US20060072201A1

公开(公告)日：2006-04-06

申请号：US11294561

申请日：2005-12-06

申请人： Hidekazu Shimomura

发明人： Hidekazu Shimomura

IPC分类号： G02B5/18

CPC分类号： G02B5/0858 ,  G02B5/0808 ,  G02B5/09 ,  G02B26/12 ,  G02B26/125

摘要： A scanning optical system using a short-wavelength light of 500 nm or less uses a reflecting mirror having a higher absolute reflectivity and having reduced wavelength and angle dependences. Divergent ray of light emitted from a semiconductor laser is converted into an approximately parallel light beam by a collimator lens and the diameter of the light flux is reduced by an aperture before travel to a polygon mirror. The light beam from the polygon mirror passes through scanning lenses to form a small spot at any point in the entire scanning area. The semiconductor laser is a gallium nitride semiconductor laser having an oscillation wavelength of 408 nm. The polygon mirror has such a characteristic that, if the complex refractive index N of a metallic film contributing to a reflection characteristic of the reflecting mirror is defined as N(λ)=n(λ)−ik(λ), then k(λ)>√{square root over ((−n(λ)2+18n(λ)−1))} is satisfied.

摘要翻译： 使用500nm以下的短波长光的扫描光学系统使用具有较高绝对反射率并具有降低的波长和角度依赖性的反射镜。 从半导体激光器发出的发散的光线通过准直透镜转换为大致平行的光束，并且在行进到多面镜之前通过光圈减小光通量的直径。 来自多面镜的光束通过扫描透镜，以在整个扫描区域的任何点形成小斑点。 半导体激光器是振荡波长为408nm的氮化镓半导体激光器。 多面镜具有这样的特征：如果将有助于反射镜的反射特性的金属膜的复折射率N定义为N（λ）= n（λ）-ik（λ），则k（λ ）>√{平方根（（-n（lambda） ^{+ 18n（λ）-1）}}。}

公开(公告)号：US06693744B2

公开(公告)日：2004-02-17

申请号：US09944069

申请日：2001-09-04

申请人： Hidekazu Shimomura

发明人： Hidekazu Shimomura

IPC分类号： G02B2744

CPC分类号： G02B27/4211 ,  G02B5/1895

摘要： An imaging element includes a diffraction optical element on which an off-axis beam with a field angle is incident and a stop. Of beams having different field angles and incident on the diffraction optical element, beams having incident angles larger than the incident angle of a principal light ray of the beams incident on the grating surface of the diffraction optical element are partially shielded by a light-shielding member, so that the diffraction efficiencies of orders adjacent to a design order are kept low and hence imaging performance almost free from flare can be achieved even if a beam with a field angle is incident.

摘要翻译： 成像元件包括衍射光学元件，在该衍射光学元件上具有入射角度的离轴光束并且停止。 具有不同场角并入射在衍射光学元件上的光束，入射角度大于入射在衍射光学元件的光栅表面上的光束的主光线的入射角的入射角的光束被遮光部件 ，使得与设计顺序相邻的阶数的衍射效率保持较低，因此即使入射具有场角的光束，也可以实现几乎没有光晕的成像性能。

公开(公告)号：US06507445B1

公开(公告)日：2003-01-14

申请号：US09717239

申请日：2000-11-22

申请人： Hidekazu Shimomura

发明人： Hidekazu Shimomura

IPC分类号： G02B936

CPC分类号： G02B27/4211

摘要： An optical system provided with a lens, a stop and a diffraction grating is characterized in that when in a state wherein the diffraction grating is absent, the value of the coefficient of chromatic aberration of magnification of the wavelength of the long wavelength side relative to the reference wavelength of light is positive, the diffraction grating is disposed more adjacent to an incidence surface side than the stop, and when in the state wherein the diffraction grating is absent, the value of the coefficient of chromatic aberration of magnification of the wavelength of the long wavelength side relative to the reference wavelength of the light is negative, the diffraction grating is disposed more adjacent to an emergence side than the stop.

摘要翻译： 设置有透镜，光阑和衍射光栅的光学系统的特征在于，当在不存在衍射光栅的状态下，长波长侧的波长的色像差系数相对于 光的参考波长是正的，衍射光栅被设置成比停止更靠近入射面侧，并且当处于不存在衍射光栅的状态时，波长的倍率色像差系数的值 相对于光的参考波长的长波长侧是负的，衍射光栅被设置成比停止更靠近出射侧。

公开(公告)号：US08379313B2

公开(公告)日：2013-02-19

申请号：US12947633

申请日：2010-11-16

申请人： Hidekazu Shimomura

发明人： Hidekazu Shimomura

IPC分类号： G02B27/14 ,  B41J2/47 ,  B41J27/00

CPC分类号： B41J2/473 ,  G02B26/125

摘要： An image scanning apparatus includes a beam splitter disposed between a deflection surface and surfaces to be scanned. The beam splitter is formed of reflective surfaces and transmissive surfaces. One transmissive surface is disposed between the reflective surfaces in the sub-scanning direction, and an optical path of light beams reaching surfaces to be scanned that are physically closer to the deflection surface than a surface to be scanned located at the position physically farthest from the deflection surface between the reflective surfaces intersects with an optical path of a light beam reaching the surface to be scanned located at a position physically farthest from the deflection surface between the deflection surface and the transmissive surface in a sub-scanning cross section in the beam splitter.

摘要翻译： 一种图像扫描装置，包括设置在偏转表面和待扫描表面之间的分束器。 分束器由反射表面和透射表面形成。 一个透射表面设置在副扫描方向的反射表面之间，并且到达待扫描表面的光束的光路，其物理上更接近于偏转表面，而不是位于物理上离物理上最远离的位置处的被扫描表面 反射表面之间的偏转面与在分束器中的副扫描横截面中到达待扫描表面的光束的光路相交，位于物理上最远离偏转表面和透射表面之间的偏转表面的位置处的位置 。

公开(公告)号：US07911669B2

公开(公告)日：2011-03-22

申请号：US12028010

申请日：2008-02-07

申请人： Hidekazu Shimomura

发明人： Hidekazu Shimomura

IPC分类号： G02B26/08

CPC分类号： G02B26/105 ,  G02B26/0833

摘要： An optical scanning device includes a condensing optical system for collecting a light beam emitted from light source means, a deflecting system for scanningly deflecting the light beam collected by the condensing optical system, and an imaging optical system configured to image the light beam scanningly deflected by the deflecting means, on a surface to be scanned, the deflecting means having a deflecting surface reciprocally movable within a main-scan sectional plane to scanningly deflect the light beam from the condensing optical system, wherein, when the deflecting surface reciprocally moves within the main-scan sectional plane, the deflecting surface receives an angular acceleration which is able to cause deformation being asymmetric with respect to a sub-scan direction, and wherein the condensing optical system collects the light beam from the light source means to a region of the deflecting surface which is at a side of a central line of the deflecting surface with respect to the sub-scan direction where an amount of asymmetric deformation of the deflecting surface in the sub-scan direction is smaller than that at the other side.

摘要翻译： 光学扫描装置包括聚光光学系统，用于收集从光源装置发射的光束，用于扫描地偏转由聚光光学系统收集的光束的偏转系统;以及成像光学系统，被配置成将由扫描偏转的光束成像 所述偏转装置在待扫描的表面上，所述偏转装置具有偏转表面，所述偏转表面在主扫描截面内可往复移动，以使来自聚光光学系统的光束扫描偏转，其中当偏转表面在主扫描 偏转表面接收能够使变形相对于副扫描方向不对称的角加速度，并且其中聚光系统将来自光源装置的光束收集到偏转的区域 在偏转表面的中心线相对于th的一侧的表面 在副扫描方向上偏转表面的不对称变形量小于另一侧的副扫描方向。

公开(公告)号：US20110063691A1

公开(公告)日：2011-03-17

申请号：US12845157

申请日：2010-07-28

申请人： Hidekazu Shimomura

发明人： Hidekazu Shimomura

IPC分类号： H04N1/04

CPC分类号： G02B26/125 ,  G02B26/127

摘要： A light scanning apparatus comprises a light source unit, a deflection unit, an incident optical system, and an imaging optical system including a transmission type imaging optical element and a reflection optical element are provided. A light beam deflected for scanning by the deflection unit passes through the imaging optical element in order of a first and a second transmission surfaces, and then passes through the imaging optical element again a third and fourth transmission surfaces. The first and fourth transmission surfaces of the imaging optical element are different in shape from another in the sub-scanning direction. Respective components are set so that, in a sub-scanning section, the light beam deflected for scanning is turned back by the reflection optical element and refracted/diffracted at the first transmission surface in a direction in which a reflected light beam passes through the third transmission surface, and that predetermined Conditional Expression is satisfied.

摘要翻译： 提供一种光扫描装置，包括光源单元，偏转单元，入射光学系统和包括透射型成像光学元件和反射光学元件的成像光学系统。 由偏转单元偏转的用于扫描的光束按照第一和第二透射面的顺序通过成像光学元件，然后再次通过成像光学元件第三和第四透射面。 成像光学元件的第一和第四透射面在副扫描方向上的形状与另一个不同。 设置各个部件，使得在副扫描部分中，用于扫描的偏转光束被反射光学元件反射并在反射光束穿过第三透镜的方向在第一透射表面处折射/衍射 传输表面，并且满足预定的条件表达式。