公开(公告)号：US20030123118A1

公开(公告)日：2003-07-03

申请号：US10322531

申请日：2002-12-19

Applicant: PENTAX Corporation

Inventor： Takashi Iizuka

IPC: G02B026/08

CPC classification number: G02B26/126

Abstract: A scanning optical system is provided with a light source including a multi-mode laser diode emitting a laser beam, a polygonal mirror that deflects the laser beam emitted by the light source, and an fnull optical element that has positive power both in a main scanning direction and in an auxiliary scanning direction. The fnull optical element converges the laser beam deflected by the polygonal mirror to converge on an object to be scanned. In this scanning optical system, the fnull optical element is configured to include a reflection surface, and the power of the fnull optical element in the main scanning direction is provided mainly by the reflection surface thereof.

Abstract translation: 扫描光学系统设置有包括发射激光束的多模式激光二极管的光源，使由光源发射的激光束偏转的多面镜和在主扫描中具有正光焦度的光学元件 方向和辅助扫描方向。 光学元件会聚由多角镜偏转的激光束会聚在待扫描的物体上。 在该扫描光学系统中，光学元件被构造成包括反射面，主扫描方向上的光学元件的功率主要由其反射面提供。

公开(公告)号：US20040257429A1

公开(公告)日：2004-12-23

申请号：US10867808

申请日：2004-06-16

Applicant: PENTAX Corporation

Inventor： Takashi Iizuka ,  Shohei Matsuoka

IPC: B41J015/14 ,  B41J027/00

CPC classification number: G02B26/126 ,  B41J2/471

Abstract: In a reflective scanning optical system employing an imaging optical system having a curved mirror with a rotationally symmetrical reflecting surface configuration, the change in magnification of the imaging optical system in the auxiliary scanning direction is reduced and thereby the beam spot diameter on the scan target surface is equalized, as well as equalizing the scan line interval on the scan target surface when the system is applied to a multibeam scanning optical system. The imaging optical system of the reflective scanning optical system includes a curved mirror with a rotationally symmetrical reflecting surface and a lens having an anamorphic lens surface configuration on its one side. In the anamorphic lens surface configuration, slope and curvature of the line of intersection of the lens surface and a plane parallel to the auxiliary scanning cross section change independently of each other as the position in the main scanning direction changes.

Abstract translation: 在采用具有旋转对称反射面构造的曲面镜的成像光学系统的反射型扫描光学系统中，成像光学系统在辅助扫描方向上的放大率的变化减小，从而扫描对象面上的光点直径 均衡，并且当系统应用于多光束扫描光学系统时，将扫描目标表面上的扫描线间隔相等。 反射扫描光学系统的成像光学系统包括具有旋转对称反射表面的曲面镜和在其一侧具有变形透镜表面形状的透镜。 在变形透镜表面构造中，随着主扫描方向的位置改变，透镜表面和平行于辅助扫描横截面的平面的交点的倾斜和曲率彼此独立地改变。

公开(公告)号：US20040174581A1

公开(公告)日：2004-09-09

申请号：US10792737

申请日：2004-03-05

Applicant: PENTAX Corporation

Inventor： Takashi Iizuka ,  Daisuke Koreeda

IPC: G02B026/08

CPC classification number: G02B26/123

Abstract: A scanning optical system includes a polygonal mirror that deflects the even number of beams, which are incident thereon along optical paths arranged symmetrically with respect to a plane perpendicular to a rotation axis thereof. An imaging optical system for converging the beams includes lenses for converging the beam, in an auxiliary scanning direction, respectively. The lenses have the same shapes, and are arranged symmetrically with respect to the plane. The orientation of the lenses on one side of the plane is oriented oppositely, in the auxiliary scanning direction, to the other lenses located on the other side of the plane.

Abstract translation: 扫描光学系统包括多边形镜，其使沿着与其旋转轴线垂直的平面对称布置的光路入射到其上的偶数个光束。 用于会聚光束的成像光学系统包括用于在辅助扫描方向上会聚光束的透镜。 透镜具有相同的形状，并且相对于平面对称地布置。 在该平面的一侧上的透镜的取向在辅助扫描方向上相对于位于该平面另一侧的其它透镜。

公开(公告)号：US20040136043A1

公开(公告)日：2004-07-15

申请号：US10743763

申请日：2003-12-24

Applicant: PENTAX Corporation

Inventor： Takashi Iizuka

IPC: G02B026/08

CPC classification number: G02B26/123 ,  G02B26/124 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/0446

Abstract: Laser beams emitted from a plurality of light emitting points of a light source unit are converged by a first optical system to be focused in an auxiliary scanning direction in the vicinity of a reflecting surface of a polygon mirror, dynamically deflected by the polygon mirror, and converged by a second optical system to form scan lines on a scan target surface. The first optical system includes a plurality of cylindrical lenses, in which a second cylindrical lens is attached to a holder so as to be movable in the optical axis direction and is selectively stopped at two positions that satisfy a particular relationship. By the composition, the interval between the scan lines on the scan target surface measured in the auxiliary scanning direction can be switched correctly and with extreme ease in the multibeam optical system, without the need of using a movement control mechanism composed of high precision parts.

Abstract translation: 从光源单元的多个发光点发射的激光束被第一光学系统会聚，以在由多面镜动态偏转的多面镜的反射面附近的辅助扫描方向上聚焦，以及 由第二光学系统会聚以在扫描目标表面上形成扫描线。 第一光学系统包括多个柱面透镜，其中第二柱面透镜附接到保持器，以便在光轴方向上可移动，并且选择性地停止在满足特定关系的两个位置处。 通过组成，可以在多光束光学系统中在辅助扫描方向上测量的扫描目标表面上的扫描线之间的间隔被正确地并且极其容易地切换，而不需要使用由高精度部件组成的移动控制机构。

公开(公告)号：US20040080800A1

公开(公告)日：2004-04-29

申请号：US10690648

申请日：2003-10-23

Applicant: PENTAX Corporation

Inventor： Takashi Iizuka

IPC: G02B026/08

CPC classification number: G02B26/123 ,  G02B26/128

Abstract: There is provided a scanning optical system for emitting a plurality of beams scanning in a main scanning direction. The scanning optical system includes a first and a second light emitting devices each of which has a linear array of light emitting points. The first and second light emitting devices are positioned such that the linear array of light emitting points of each of the first and second light emitting devices is aligned in parallel with an auxiliary scanning direction and that the beam spots formed by the plurality of beams emitted by the first light emitting device and the beam spots formed by the plurality of beams emitted by the second light emitting devices are alternately arranged on a scan target surface in the auxiliary scanning direction.

Abstract translation: 提供了用于发射沿主扫描方向扫描的多个光束的扫描光学系统。 扫描光学系统包括第一和第二发光器件，每个发光器件具有发光点的线性阵列。 第一和第二发光器件被定位成使得第一和第二发光器件中的每一个的发光点的线性阵列与辅助扫描方向平行排列，并且由多个光束形成的光束点由 第一发光器件和由第二发光器件发射的多个光束形成的光束点在辅助扫描方向上交替地布置在扫描目标表面上。

公开(公告)号：US20040051924A1

公开(公告)日：2004-03-18

申请号：US10659373

申请日：2003-09-11

Applicant: PENTAX Corporation

Inventor： Takashi Iizuka

IPC: G02B026/08

CPC classification number: G02B26/123

Abstract: A scanning optical system includes a light source that emits a plurality of beams, a deflector disposed on optical paths of the beams emitted from light source, which deflector deflects the beams toward an object surface so that beam spots formed by the beams scan on the object surface in a main scanning direction, and a birefringent double-image member disposed on the optical paths of the beams. The birefringent double-image member splits each of the beams passing therethrough into an ordinary ray and an extraordinary ray that is displaced from the ordinary ray in an auxiliary scanning direction and travels in a vicinity of the ordinary ray. Note that the auxiliary scanning direction is a direction perpendicular to the main scanning direction.

Abstract translation: 扫描光学系统包括发射多个光束的光源，设置在从光源发射的光束的光路上的偏转器，该偏转器将光束偏转到物体表面，使得由光束形成的光束点在物体上扫描 在主扫描方向上的双折射双图像构件和设置在光束的光路上的双折射双图像构件。 双折射双图像构件将通过其中的每个光束分成普通光线和从辅助扫描方向上的普通光线偏移并在普通光线附近行进的异常光线。 注意，辅助扫描方向是与主扫描方向垂直的方向。

公开(公告)号：US20030067665A1

公开(公告)日：2003-04-10

申请号：US10260410

申请日：2002-10-01

Applicant: PENTAX CORPORATION

Inventor： Takashi Iizuka

IPC: G02B026/08

CPC classification number: G02B26/124 ,  B41J2/471 ,  G02B26/126

Abstract: There is provided a scanning optical system, which is provided with a light source, a cylindrical lens that converges the beam emitted by the light source in an auxiliary scanning direction, a polygonal mirror, and an optical element that has a reflection surface to reflect the beam deflected by the polygonal mirror. The optical element converges the beam deflected by the polygonal mirror on the surface to be scanned to form a beam spot. In this case, the cylindrical lens is arranged such that the beam, which enters into the cylindrical lens and exits from the cylindrical lens without being reflected by inner surfaces of the cylindrical lens, is deflected in the auxiliary scanning direction by the cylindrical lens and is incident on the polygonal mirror.

Abstract translation: 提供了一种扫描光学系统，其设置有光源，会聚由辅助扫描方向的光源发射的光束的柱面透镜，多面镜和具有反射面的反射面的光学元件 由多面镜偏转的光束。 光学元件将由多面镜偏转的光束会聚在要扫描的表面上以形成光斑。 在这种情况下，柱面透镜被布置成使得入射到柱面透镜中而不被柱面透镜的内表面反射的光束由辅助扫描方向被柱面透镜偏转，并且是 事件在多面镜。

公开(公告)号：US20040036974A1

公开(公告)日：2004-02-26

申请号：US10643900

申请日：2003-08-20

Applicant: PENTAX Corporation

Inventor： Takashi Iizuka ,  Yutaka Takakubo

IPC: G02B001/10

CPC classification number: G02B26/125

Abstract: A laser beam emitted by a light source is incident on one of reflecting surfaces of a polygon mirror. The laser beam reflected by the reflecting surface is dynamically deflected in a main scanning direction due to the revolution of the polygon mirror and enters a scanning lens. The first surface of the scanning lens is provided with anti-reflection coating only when the following condition (1) is satisfied:H/2>null2nullD(DnullRz1)/Rz1nullnullnull(1)where nullHnull denotes the width of each reflecting surface of the polygon mirror in a auxiliary scanning direction, nullnullnull denotes the incident angle nullradiannull of the laser beam on the reflecting surface of the polygon mirror in the auxiliary scanning direction, nullDnull denotes the distance between the reflecting surface and the first surface of the scanning lens, and nullRz1null denotes the curvature radius of the first surface in an auxiliary scanning cross section.

Abstract translation: 由光源发射的激光束入射到多面镜的反射面之一上。 由反射面反射的激光束由于多面反射镜的旋转而在主扫描方向上动态偏转并进入扫描透镜。 仅当满足以下条件（1）时，扫描透镜的第一表面仅具有抗反射涂层：H / 2> | 2betaD（D-Rz1）/ Rz1 | （1）其中，“H”表示辅助扫描方向上的多面镜的各反射面的宽度，“β”表示辅助扫描中的多面反射镜的反射面上的激光的入射角[弧度] 方向，“D”表示反射面与扫描透镜的第一面之间的距离，“Rz1”表示辅助扫描截面中第一面的曲率半径。