Packaged mirror including mirror travel stops
    51.
    发明授权
    Packaged mirror including mirror travel stops 失效
    包装镜包括镜子行程停止

    公开(公告)号:US6059188A

    公开(公告)日:2000-05-09

    申请号:US631364

    申请日:1996-04-12

    IPC分类号: G06K7/10 H01S5/183 H01S5/42

    摘要: An integrated optical module for an optical scanner has a lens spaced from a vertical-cavity surface-emitting laser (VCSEL) by a spacer of defined dimensions. The module, in an alternative embodiment, includes a wafer frame, a suspended mirror mounted for oscillation on the frame, a wafer substrate bonded beneath the frame and a wafer cover bonded above the frame. The cover includes a mirror travel stop to protect the mirror against shocks. A VCSEL mounted to the wafer cover produces a beam which is shaped and deflected by a diffractive optical element onto the oscillating mirror. The reflected beam passes out of the module toward an indicia to be read. Large numbers of such devices may be fabricated relatively cheaply using wafer-scale processing and assembly technology. Three large wafers are fabricated corresponding respectively to arrays of substrates, frames and covers. The large wafers are bonded together in a sandwich arrangement, and are then diced to produce the individual scan modules. The modules may provide either one-dimensional or two-dimensional scanning.

    摘要翻译: 用于光学扫描仪的集成光学模块具有通过限定尺寸的间隔件与垂直腔表面发射激光器(VCSEL)间隔开的透镜。 在替代实施例中,该模块包括晶片框架,安装用于在框架上摆动的悬挂镜,结合在框架下方的晶片衬底以及粘结在框架上方的晶片盖。 盖子包括镜子行驶挡板,以防止镜子受到冲击。 安装到晶片盖的VCSEL产生由衍射光学元件成形并偏转到振动反射镜上的光束。 反射光束从模块朝向要读取的标记。 可以使用晶片级处理和组装技术相对便宜地制造大量的这种装置。 制造三个大的晶片,分别对应于基板,框架和盖子的阵列。 大晶片以夹层结构结合在一起,然后被切割以产生各个扫描模块。 模块可提供一维扫描或二维扫描。

    Integrated scanner on a common substrate
    54.
    发明授权
    Integrated scanner on a common substrate 失效
    集成扫描仪在公共基板上

    公开(公告)号:US5966230A

    公开(公告)日:1999-10-12

    申请号:US483163

    申请日:1995-06-07

    IPC分类号: G06K7/10 G02B26/08

    摘要: An integrated scanner for scanning a barcode is formed on a common substrate. The scanner may include a micro-machined mirror, a laser diode, and a detector, mounted on a single substrate or several connected substrates. Lenses can be used to focus a laser beam from the laser diode as well as expand a laser beam deflected by the micro-machined mirror. The scanner may also scan a barcode without using a micro-machined mirror by rotating the laser diode.

    摘要翻译: 用于扫描条形码的集成扫描仪形成在公共基板上。 扫描器可以包括安装在单个基板或几个连接的基板上的微加工镜,激光二极管和检测器。 可以使用透镜来聚焦来自激光二极管的激光束,以及扩大由微加工镜反射的激光束。 扫描仪也可以通过旋转激光二极管来扫描条形码而不使用微加工镜。

    Flying spot optical scanner with a high speed dithering motion
    56.
    发明授权
    Flying spot optical scanner with a high speed dithering motion 失效
    带高速抖动的飞点光学扫描仪

    公开(公告)号:US5648649A

    公开(公告)日:1997-07-15

    申请号:US508628

    申请日:1995-07-28

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10851 G06K2207/1018

    摘要: An optical scanner includes a light source for producing a light beam for scanning a target wherein the light beam scans a target at a first low frequency and the beam also dithers in a direction orthogonal to the scanning direction at a second, high frequency. The dithering motion can be imparted by a oscillating mirror and allows improved reading of, for example, bar code symbols. In addition an optical scanner includes a laser light source producing a laser light beam into which a time-varying phase is introduced in order to reduce laser speckle noise.

    摘要翻译: 光学扫描器包括:光源,用于产生用于扫描目标的光束,其中光束以第一低频扫描目标,并且光束在与第二高频率的扫描方向正交的方向上抖动。 抖动动作可以由振动反射镜赋予,并且允许改进例如条形码符号的读取。 此外,光学扫描仪包括产生激光束的激光光源,其中引入了时变相,以减少激光散斑噪声。