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公开(公告)号：US6064504A
公开(公告)日：2000-05-16
申请号：US791977
申请日：1997-01-31
CPC分类号： B41J2/471 , G02B26/123 , G02B26/124
摘要： A scanning optical device includes a light source that emits a light beam; a deflector for deflecting and scanning the light beam from the light source; a scanning lens for converging the deflected light beam onto an image surface; and a mechanism for adjusting the relative position of at least one lens element of the scanning lens with respect to other lens elements of the scanning lens in an auxiliary scanning direction. Preferably, the adjustable lens element of the scanning lens be provided with an anamorphic surface having relatively larger power in the auxiliary scanning direction than in the main scanning direction. Alternatively, the above-mentioned at least one lens element may have the largest absolute value of refractive power of the lenses in the scanning lens. Further alternatively, the above-mentioned at least one lens element may be provided with a surface having the smallest absolute value of radius of curvature of all surfaces in the scanning lens.
摘要翻译： 扫描光学装置包括发射光束的光源; 偏转器，用于偏转和扫描来自光源的光束; 用于将偏转的光束会聚到图像表面上的扫描透镜; 以及用于调整扫描透镜的至少一个透镜元件相对于扫描透镜的其它透镜元件在辅助扫描方向上的相对位置的机构。 优选地，扫描透镜的可调节透镜元件设置有在辅助扫描方向上比在主扫描方向上具有相对较大功率的变形表面。 或者，上述至少一个透镜元件可以具有扫描透镜中的透镜的屈光力的绝对值的最大值。 此外，上述至少一个透镜元件可以设置有扫描透镜中所有表面的曲率半径绝对值最小的表面。
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公开(公告)号：US5841566A
公开(公告)日：1998-11-24
申请号：US791985
申请日：1997-01-31
CPC分类号： B41J2/471 , G02B26/123 , G02B26/124
摘要： A multi-beam scanning optical device. The multi-beam scanning optical device has a plurality of light emitting elements, a deflector that deflects a plurality of light fluxes emitted form the light emitting elements, and a scanning lens system that converges the light fluxes deflected by the deflector to form a plurality of light spots on a surface to be scanned. The light emitting elements are selected to satisfy a condition: .vertline..DELTA..lambda..vertline.
摘要翻译： 多光束扫描光学装置。 多光束扫描光学器件具有多个发光元件，偏转器，其偏转从发光元件发射的多个光束;以及扫描透镜系统，其收敛由偏转器偏转的光束，以形成多个 要扫描的表面上的光斑。 选择发光元件以满足条件：| DELTAλ| <7.6×103 /（α×D），其中ΔTA是从参考波长的多个发光元件中的每一个的波长误差（单位：nm），D是扫描光学器件的分辨率（单位： 每英寸点数（dpi）），而alpha是在扫描范围的边缘处每1nm波长变化的横向色差（单位:λm）的比率，其中扫描范围限定图像 形成了。
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公开(公告)号：US5844707A
公开(公告)日：1998-12-01
申请号：US791978
申请日：1997-01-31
CPC分类号： G02B26/123 , B41J2/471 , G02B26/124
摘要： A scanning optical device that includes a laser source that emits a laser beam; a deflector for deflecting a laser beam to form a scanning beam spot on an image surface; a beam splitter, between the laser source and the deflector, and a sensor positioned in a predetermined position relative to the beam splitter. In particular, the beam splitter includes a reflective area in which the laser beam from the laser source is reflected and a transmitting area that is distinct from the reflective area through which the laser beam is transmitted. One of the reflected laser beam or transmitted laser beam is a main beam to be deflected by the deflector and the other is a monitor beam to be detected by the sensor.
摘要翻译： 一种扫描光学装置，包括发射激光束的激光源; 偏转器，用于偏转激光束以在图像表面上形成扫描光束点; 在激光源和偏转器之间的分束器和位于相对于分束器的预定位置的传感器。 具体地，分束器包括反射区域，激光源的激光束被反射，并且与透射激光束的反射区域不同的透射区域。 反射的激光束或透射的激光束中的一个是由偏转器偏转的主光束，另一个是由传感器检测的监视光束。
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公开(公告)号：US5760944A
公开(公告)日：1998-06-02
申请号：US791983
申请日：1997-01-31
CPC分类号： B41J2/471 , G02B26/123 , G02B26/124
摘要： A scanning optical device that includes a light source that emits a light flux; a polygon mirror for deflecting the light flux; a scanning lens for converging the light flux deflected by the polygon mirror to form a beam spot on an image surface; a dynamic prism that is rotatably disposed between the light source and the polygon mirror to affect the direction of the light flux; a driving mechanism for rotating the dynamic prism to change the deviation angle of the dynamic prism; and a controller for controlling the driving mechanism to change the position of the beam spot during scanning. In particular, the controller rotates the dynamic prism to compensate for errors that affect the position of the beam spot on the image surface, such as errors that vary with time and errors that occur randomly during the scanning process.
摘要翻译： 一种扫描光学装置，包括发射光束的光源; 用于偏转光束的多面镜; 用于会聚由多面镜偏转的光束以在图像表面上形成束斑的扫描透镜; 可旋转地设置在光源和多面镜之间以影响光通量的方向的动态棱镜; 用于旋转所述动态棱镜以改变所述动态棱镜的偏离角的驱动机构; 以及用于控制驱动机构以在扫描期间改变束斑的位置的控制器。 特别地，控制器旋转动态棱镜以补偿影响图像表面上的束斑的位置的误差，例如随扫描过程随机随时间变化的误差和错误。
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公开(公告)号：US5812727A
公开(公告)日：1998-09-22
申请号：US791963
申请日：1997-01-31
CPC分类号： G02B6/3636 , G02B26/124 , G02B6/3652 , G02B6/3839 , G02B6/3878
摘要： A multi-beam scanning optical device uses optical fibers to transmit the laser fluxes from the semiconductor lasers. The optical fibers are arranged such that point light sources formed at respective exit ends of the optical fibers are linearly aligned. The exit light fluxes from the optical fibers are deflected by a polygon mirror and converged on an image surface to form a line of beam spots, which forms plurality of scanning lines per scan. In order to adjust the angle of the line of beam spots, the exit end portions of the optical fibers is fixed to a fiber alignment block such that the exit end surfaces of said optical fiber are linearly aligned on an alignment line. Further, the fiber alignment block is fixed to a cylindrical member which is rotatably supported by a supporting member. Accordingly, the angle of the line of beam spots can be easily adjusted by rotating the cylindrical member.
摘要翻译： 多光束扫描光学器件使用光纤从半导体激光器传输激光束。 光纤布置成使得形成在光纤的各出口端处的点光源线性对准。 来自光纤的出射光束由多面镜偏转并会聚在图像表面上以形成一束光斑，每行扫描形成多条扫描线。 为了调整光束线的角度，将光纤的出射端部固定在光纤取向块上，使得光纤的出射端面在对准线上线性排列。 此外，光纤对准块被固定到由支撑构件可旋转地支撑的圆柱形构件。 因此，可以通过旋转圆柱形构件容易地调节束斑线的角度。
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公开(公告)号：US5838001A
公开(公告)日：1998-11-17
申请号：US791964
申请日：1997-01-31
CPC分类号： G02B26/123 , B41J2/471 , G02B26/124
摘要： A scanning optical device that includes a light source for emitting a light flux; a polygon mirror including a plurality of reflecting surfaces for deflecting the light flux to form a scanning beam spot on an image surface; a polygon mirror cover that covers the polygon mirror; and an optical sensor. The polygon mirror is provided with a mark on the top surface thereof that is eccentric from a rotation axis of the polygon mirror. Also, the polygon mirror cover includes a cylindrical rib formed on an inner surface of the top wall projecting toward the polygon mirror in a space between the top wall and the polygon mirror. The optical sensor is provided for detecting the mark and projects toward the polygon mirror from the inner surface of the top wall, through the cylindrical rib, such that the optical sensor forms a part of the cylindrical rib.
摘要翻译： 一种扫描光学装置，包括用于发射光束的光源; 多面镜，包括用于偏转光束以在图像表面上形成扫描光束点的多个反射表面; 覆盖多面镜的多面镜罩; 和光学传感器。 多面镜在其顶表面上设置有与多面镜的旋转轴偏心的标记。 此外，多面镜罩包括在顶壁和多面镜之间的空间中形成在顶壁的内表面上的多个反射镜的圆柱形肋。 提供光学传感器，用于检测标记并从顶壁的内表面通过圆柱形肋状物朝向多面镜投影，使得光学传感器形成圆柱形肋的一部分。
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公开(公告)号：US5812299A
公开(公告)日：1998-09-22
申请号：US791320
申请日：1997-01-31
CPC分类号： G02B26/123 , B41J2/471 , G02B26/124 , G02B26/127
摘要： A scanning optical device includes a light source, a polygon mirror having a plurality of reflecting surfaces for deflecting a light flux emitted from the light source to form a scanning beam spot on an image surface, an identifying device that identifies which reflecting surface is currently scanning the light flux, a memory that stores data corresponding to shape errors of the reflecting surfaces, a correcting member that corrects a position of the beam spot, and a controller that controls the correcting member in accordance with an output of the identifying device and with data read from the memory. The correcting member is controlled to compensate for deviations of the beam spot due to tilt errors of the reflecting surfaces and may also be controlled to compensate for deviations of the beam spot due to an unevenness of the movement of the image surface.
摘要翻译： 扫描光学装置包括光源，具有多个反射表面的多面反射镜，用于偏转从光源发射的光束以在图像表面上形成扫描光束点;识别装置，识别哪个反射表面正在扫描 光通量，存储对应于反射面的形状误差的数据的存储器，校正光束位置的校正部件，以及根据识别装置的输出和数据来控制校正部件的控制器 从内存读取。 控制校正构件以补偿由于反射表面的倾斜误差引起的光斑的偏差，并且还可以控制校正构件以补偿由于图像表面的运动不均匀引起的束斑的偏差。
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公开(公告)号：US5898805A
公开(公告)日：1999-04-27
申请号：US791979
申请日：1997-01-31
CPC分类号： G02B6/3636 , B41J2/471 , G02B26/124 , G02B6/4207 , G02B6/4208 , G02B6/3652
摘要： A light transmission device includes a semiconductor laser for emitting a laser flux, an optical fiber for transmitting the laser flux emitted from the semiconductor laser, and a device that prevents the laser flux, reflected at an incident end surface of the optical fiber, from returning to the semiconductor laser. In particular, the preventing device may be a slanted incident end surface of the optical fiber, such that the reflected laser flux at the incident end surface is directed away from the semiconductor laser. The preventing device may also be an optical isolator that is disposed between the semiconductor laser and the incident end surface of the optical fiber.
摘要翻译： 光传输装置包括用于发射激光束的半导体激光器，用于透射从半导体激光器发射的激光束的光纤，以及防止在光纤的入射端面反射的激光束返回的装置 到半导体激光器。 特别地，防止装置可以是光纤的倾斜的入射端面，使得入射端面处的反射激光束被引导离开半导体激光器。 防止装置也可以是设置在半导体激光器和光纤的入射端面之间的光隔离器。
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公开(公告)号：US5892219A
公开(公告)日：1999-04-06
申请号：US654824
申请日：1996-05-29
IPC分类号： B41J2/47 , G02B20060101 , G02B26/02 , H01S5/0683 , H01S5/40 , H01S3/10
CPC分类号： H01S5/0683 , B41J2/471 , H01S5/4025
摘要： A light intensity controlling device has a beam splitter which splits light fluxes emitted from a plurality of independently controlled semiconductor lasers, guided by optical fibers, into monitor light fluxes and main light fluxes. A gain adjusting circuit corrects the changes of output of light receiving elements depending on the polarization states of the light fluxes incident into the beam splitter. The changes result from the polarization characteristics of the optical fibers and/or the beam splitter. Alternatively, a filter is provided at one of the light receiving elements to compensate for the changes, thus providing a corrected output signal. Laser control circuits control the light emitting intensity of each semiconductor laser based on corrected output signals. The light receiving elements are set at an angle to the incoming light as so to avoid directing reflected light back toward an imaging system or the lasers.
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公开(公告)号：US20060013535A1
公开(公告)日：2006-01-19
申请号：US10701625
申请日：2003-11-06
申请人： Masahiro Fushimi , Eiichi Ito , Tomohiro Fujita , Tadashi Minakuchi , Akira Arimoto , Mitsunori Iima , Yoshimi Obara , Shinji Tsukamoto , Ryoichi Nakanishi
发明人： Masahiro Fushimi , Eiichi Ito , Tomohiro Fujita , Tadashi Minakuchi , Akira Arimoto , Mitsunori Iima , Yoshimi Obara , Shinji Tsukamoto , Ryoichi Nakanishi
CPC分类号： G02B6/4222 , G02B6/4227
摘要： An optical communication device includes a light source that emits a light beam and an optical fiber having a core and a cladding. The optical fiber has a light entrance face having a core region and a cladding region. The light beam emitted by the light source is converged by a converging lens on the core region and is transmitted through the optical fiber. The entrance face is configured to generate a light intensity distribution in light reflected by the light entrance face depending on a position where the light beam is incident on the entrance face, a converging lens arranged between the light source and the optical fiber.
摘要翻译： 光通信装置包括发射光束的光源和具有芯和包层的光纤。 光纤具有具有芯区域和包层区域的光入射面。 由光源发射的光束由会聚透镜会聚在芯区域上，并透过光纤。 入射面被配置为根据光入射在入射面上的位置产生由光入射面反射的光的光强度分布，配置在光源和光纤之间的会聚透镜。
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