Optical scanning apparatus
    1.
    发明授权

    公开(公告)号:US06445483B1

    公开(公告)日:2002-09-03

    申请号:US08886469

    申请日:1997-07-01

    IPC分类号: G02B2608

    摘要: An improved optical scanning apparatus is adapted to be such that at either end of the scan range, an optical beam deflected by a reflecting surface of a scanner will pass through an anamorphic lens in scanning optics at a position spaced from its optical axis in the sub-scanning direction. The anamorphic lens has such a sectional profile in the sub-scanning direction that the lens thickness at one end of the sub-scanning direction differs from the thickness at the other end. Also, a high speed optical scanning apparatus based on the dual incidence and the oblique incidence, can prevent a positional variation of a scanning line that is due to a shift of each facet of the rotating polygonal mirror, which is caused by an offset of the rotating axis of the rotating polygonal mirror. The scanning apparatus includes a light source, a rotating polygonal mirror with a plural number of reflecting surfaces for reflecting and deflecting an optical beam emitted from the light source, transfer optics for receiving the optical beam that is reflected and deflected by a first reflecting surface of the rotating polygonal mirror and transferring the optical beam to a second reflecting surface of the mirror, and scanning optics for scanning a scanned surface with the optical beam that is reflected and deflected by the second reflecting surface.

    Optical scanner
    2.
    发明授权
    Optical scanner 失效
    光学扫描仪

    公开(公告)号:US5673136A

    公开(公告)日:1997-09-30

    申请号:US604901

    申请日:1996-02-22

    CPC分类号: G02B7/008 G02B26/12

    摘要: An optical scanner that has a simple construction and which yet exhibits satisfactory imaging performance under varying temperature conditions. Of the two orthogonal scanning cross sections of scanning optics (i.e., the main and sub-scanning cross sections), the one that involves the greater movement of the image plane due to the temperature-dependent changes in optical characteristics (e.g. the variation in the operating wavelength of a light source, the index variation of a lens material and the thermal expansion of a lens itself) is adapted to be the same as the other cross section that involves the greater movement of the image plane due to the change in the distance from the light source to a collimator lens. If necessary, additional correction is effected in such a way that the scanning cross section that involves the greater overall movement of the image plane after correction for temperature changes is adapted to be different from the cross section that involves the greater amount of optical field curvature.

    摘要翻译: 一种光学扫描仪,具有简单的结构,并且在变化的温度条件下表现出令人满意的成像性能。 在扫描光学器件的两个正交扫描横截面(即主扫描和副扫描截面)中,由于光学特性的温度依赖性变化(例如, 光源的工作波长,透镜材料的折射率变化和透镜本身的热膨胀)适合于与由于距离变化引起的图像平面更大移动的另一横截面相同 从光源到准直透镜。 如果需要,进行附加的校正,使得在校正温度变化之后涉及图像平面的更大整体运动的扫描横截面适于与涉及更大量的光场曲率的横截面不同。

    Optical scanner
    3.
    发明授权
    Optical scanner 失效
    光学扫描仪

    公开(公告)号:US5764397A

    公开(公告)日:1998-06-09

    申请号:US755013

    申请日:1996-11-22

    IPC分类号: G02B26/12 G02B26/08

    CPC分类号: G02B26/129

    摘要: An optical scanner comprises: a light source; beam shaping optics for transforming an optical beam from the light source into a convergent beam; a rotating polygonal mirror having at least a first reflecting face for deflecting the convergent beam and a second reflecting face; and transmission optics having a lens, with which the optical beam deflected by the first reflecting face of the rotating polygonal mirror is allowed to be incident on the second reflecting face of the rotating polygonal mirror, with the optical beam incident on the second reflecting face of the rotating polygonal mirror being deflected therefrom to produce a scanning optical beam which scans a predetermined surface to be scanned, wherein the convergent optical beam forms a focused image at a point located between the first reflecting face of the rotating polygonal mirror and the lens in the transmission optics.

    摘要翻译: 光学扫描器包括:光源; 光束整形光学器件,用于将光束从光源变换成会聚光束; 旋转多面镜,具有至少第一反射面,用于偏转会聚光束和第二反射面; 以及具有透镜的透射光学器件,由旋转多面镜的第一反射面偏转的光束通过该透镜入射到旋转多面镜的第二反射面上,光束入射在旋转多面镜的第二反射面上 旋转多面镜从其偏转以产生扫描要扫描的预定表面的扫描光束,其中会聚光束在位于旋转多面镜的第一反射面和透镜之间的点处形成聚焦图像 传输光学。

    Optical scanner
    4.
    发明授权
    Optical scanner 失效
    光学扫描仪

    公开(公告)号:US5781323A

    公开(公告)日:1998-07-14

    申请号:US744746

    申请日:1996-11-06

    CPC分类号: G02B5/09 G02B26/125

    摘要: An optical scanner for use in laser beam printers and the like which is particularly satisfactory in imaging characteristics. A light beam from a semiconductor laser passes through a collimator lens, an aperture diaphragm and a cylindrical lens. The beam is then deflected by a rotating lens mirror and subjected to the focusing action of an imaging lens so that it is focused to form a beam spot, which scans over a scan surface as the beam is deflected. The imaging lens has aspheric surfaces in the main-scanning cross section and is designed so that the rate of change in its curvature and other relevant parameters satisfy a predetermined equation so as to lie within a predetermined range.

    摘要翻译: 用于激光束打印机等的光学扫描仪,其特别令人满意的成像特性。 来自半导体激光器的光束通过准直透镜,孔径光阑和柱面透镜。 然后光束被旋转透镜反射镜偏转并经受成像透镜的聚焦作用,使得其被聚焦以形成光束点,当光束被偏转时扫描光束点在扫描表面上扫描。 成像透镜在主扫描横截面中具有非球面,并且被设计成其曲率变化率和其它相关参数满足预定方程以便处于预定范围内。

    Optical scanner
    5.
    发明授权

    公开(公告)号:US5751463A

    公开(公告)日:1998-05-12

    申请号:US837750

    申请日:1997-04-22

    CPC分类号: G02B7/008 G02B26/12

    摘要: An optical scanner that has a simple construction and which yet exhibits satisfactory imaging performance under varying temperature conditions. Of the two orthogonal scanning cross sections of scanning optics (i.e., the main and sub-scanning cross sections), the one that involves the greater movement of the image plane due to the temperature-dependent changes in optical characteristics (e.g. the variation in the operating wavelength of a light source, the index variation of a lens material and the thermal expansion of a lens itself) is adapted to be the same as the other cross section that involves the greater movement of the image plane due to the change in the distance from the light source to a collimator lens. If necessary, additional correction is effected in such a way that the scanning cross section that involves the greater overall movement of the image plane after correction for temperature changes is adapted to be different from the cross section that involves the greater amount of optical field curvature.

    Optical scanner
    6.
    发明授权
    Optical scanner 失效
    光学扫描仪

    公开(公告)号:US5883732A

    公开(公告)日:1999-03-16

    申请号:US644493

    申请日:1996-05-10

    CPC分类号: G02B26/125 G02B13/0005

    摘要: To provide an optical scanner for typical use with laser beam printers that is capable of effective correction of aberrational characteristics and which also produces a constant beam spot size, a semiconductor laser array 1 having a plurality of light-emitting portions issues a plurality of beams, which are reflected and deflected by reflecting surfaces of rotating polygonal mirror 5 and pass through imaging lens 6 to form a plurality of beam spots on the surface to be scanned 7. Both the entrance and exit surfaces of imaging lens 6 are such that the curvatures in the sub- and main scanning directions are independent of each other, with the curvature in the sub-scanning direction varying continuously in the main scanning direction over the effective area of imaging lens 6.

    摘要翻译: 为了提供能够有效校正像差特性并且还产生恒定光斑尺寸的激光束打印机的典型应用的光学扫描器,具有多个发光部分的半导体激光器阵列1发出多个光束, 它们通过旋转多面镜5的反射表面反射和偏转,并通过成像透镜6,以在待扫描的表面上形成多个光束点。成像透镜6的入射面和出射面都是这样的: 子扫描方向和主扫描方向彼此独立,副扫描方向的曲率在成像透镜6的有效区域上的主扫描方向上连续变化。

    Optical scanner
    7.
    发明授权
    Optical scanner 失效
    光学扫描仪

    公开(公告)号:US5877883A

    公开(公告)日:1999-03-02

    申请号:US22557

    申请日:1998-02-12

    IPC分类号: G02B26/12 G02B26/08

    CPC分类号: G02B26/12

    摘要: An optical scanner that has a simple construction and which yet exhibits satisfactory imaging performance under varying temperature conditions. Of the two orthogonal scanning cross sections of scanning optics (i.e., the main and sub-scanning cross sections), the one that involves the greater movement of the image plane due to the temperature-dependent changes in optical characteristics (e.g. the variation in the operating wavelength of a light source, the index variation of a lens material and the thermal expansion of a lens itself) is adapted to be the same as the other cross section that involves the greater movement of the image plane due to the change in the distance from the light source to a collimator lens. If necessary, additional correction is effected in such a way that the scanning cross section that involves the greater overall movement of the image plane after correction for temperature changes is adapted to be different from the cross section that involves the greater amount of optical field curvature.

    摘要翻译: 一种光学扫描仪,具有简单的结构,并且在变化的温度条件下表现出令人满意的成像性能。 在扫描光学器件的两个正交扫描横截面(即主扫描和副扫描截面)中,由于光学特性的温度依赖性变化(例如, 光源的工作波长,透镜材料的折射率变化和透镜本身的热膨胀)适合于与由于距离变化引起的图像平面更大移动的另一横截面相同 从光源到准直透镜。 如果需要,进行附加的校正,使得在校正温度变化之后涉及图像平面的更大整体运动的扫描横截面适于与涉及更大量的光场曲率的横截面不同。

    Optical scanner
    8.
    发明授权
    Optical scanner 失效
    光学扫描仪

    公开(公告)号:US5600476A

    公开(公告)日:1997-02-04

    申请号:US451396

    申请日:1995-05-26

    CPC分类号: G02B5/09 G02B26/125

    摘要: An optical scanner for use in laser beam printers and the like which is particularly satisfactory in imaging characteristics. A light beam from a semiconductor laser passes through a collimator lens, an aperture diaphragm and a cylindrical lens. The beam is then deflected by a rotating lens mirror and subjected to the focusing action of an imaging lens so that it is focused to form a beam spot, which scans over a scan surface as the beam is deflected. The imaging lens has aspheric surfaces in the main-scanning cross section and is designed so that the rate of change in its curvature and other relevant parameters satisfy a predetermined equation so as to lie within a predetermined range.

    摘要翻译: 用于激光束打印机等的光学扫描仪,其特别令人满意的成像特性。 来自半导体激光器的光束通过准直透镜,孔径光阑和柱面透镜。 然后光束被旋转透镜反射镜偏转并经受成像透镜的聚焦作用,使得其被聚焦以形成光束点,当光束被偏转时扫描光束点在扫描表面上扫描。 成像透镜在主扫描横截面中具有非球面,并且被设计成其曲率变化率和其它相关参数满足预定方程以便处于预定范围内。

    Method for Measuring Color Change of Oxidation-Reduction Indicator
    9.
    发明申请
    Method for Measuring Color Change of Oxidation-Reduction Indicator 有权
    测量氧化还原指示剂颜色变化的方法

    公开(公告)号:US20140322749A1

    公开(公告)日:2014-10-30

    申请号:US14348199

    申请日:2012-08-17

    IPC分类号: C12Q1/14 C12Q1/06

    摘要: Provided is a method for measuring a color change of an oxidation-reduction indicator, which method is applicable to measurement of the cariogenic bacterial count and the like. A color change of an oxidation-reduction indicator is measured by a method for measuring a color change of an oxidation-reduction indicator, the method comprising reacting a test reagent with a test sample and measuring a color change, wherein the test reagent contains an oxidation-reduction indicator, an oxidation-reduction promoter, and a halogen salt.

    摘要翻译: 提供了一种用于测量氧化还原指示剂的颜色变化的方法,该方法可应用于致龋细菌计数的测量等。 通过测定氧化还原指示剂的颜色变化的方法测定氧化还原指示剂的颜色变化,所述方法包括使测试试剂与测试样品反应并测量颜色变化,其中测试试剂含有氧化 - 还原指示剂,氧化还原促进剂和卤素盐。