专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明申请

US20130216420A1 MANUFACTURING METHOD OF MULTILAYER SHELL-CORE COMPOSITE STRUCTURAL COMPONENT 审中-公开
标题翻译：多层壳体复合结构构件的制造方法
公开(公告)号：US20130216420A1
公开(公告)日：2013-08-22
申请号：US13878233
申请日：2011-06-29
申请人： Yadong Li , Yajun Li
发明人： Yadong Li , Yajun Li
IPC分类号： B22F7/02
CPC分类号： B22F7/02 , A61F2/32 , A61F2/3601 , B22F3/1021 , B22F3/105 , B22F3/12 , B22F3/15 , B22F3/225 , B22F7/008 , B22F7/06 , B32B18/00 , C04B35/111 , C04B35/119 , C04B35/4885 , C04B35/634 , C04B35/638 , C04B35/64 , C04B35/6455 , C04B2235/3225 , C04B2235/3229 , C04B2235/6022 , C04B2235/77 , C04B2235/96 , C04B2237/343 , C04B2237/348 , C04B2237/58 , C04B2237/84
摘要： A manufacturing method of a multilayer shell-core composite structural component comprises the following procedures: (1) respectively preparing feeding material for injection forming of a core layer, a buffer layer and a shell layer, wherein the powders of feeding material of the core layer and the shell layer are selected from one or more of metallic powder, ceramic powder or toughening ceramic powder, and are different from each other, and the powder of feeding material of the buffer layer is gradient composite material powder; (2) layer by layer producing the blank of multilayer shell-core composite structural component by powder injection molding; (3) degreasing the blank; (4) sintering the blank to obtain the multilayer shell-core composite structural component. The multilayer shell-core composite structural component has the advantages of high surface hardness, abrasion resistance, uniform thickness of the shell layer, stable and persistent performance.
摘要翻译：多层壳 - 芯复合结构件的制造方法包括以下步骤：（1）分别制备核心层，缓冲层和壳层的注射成型用原料，其中芯层的供料材料壳层选自金属粉末，陶瓷粉末或增韧陶瓷粉末中的一种以上，彼此不同，缓冲层的供料粉末为梯度复合材料粉末; （2）通过粉末注射成型，逐层生产多层壳 - 芯复合结构件坯料; （3）除油; （4）烧结坯料，得到多层壳 - 芯复合结构件。多层壳芯复合结构件具有表面硬度高，耐磨性好，壳层厚度均匀，性能稳定持久的优点。

82. 发明申请

US20090103426A1 OPTICAL INFORMATION RECORDING MEDIUM BASED ON INTERFERENCE OF CONVERGING SPHERICAL WAVES 有权
公开(公告)号：US20090103426A1
公开(公告)日：2009-04-23
申请号：US12110245
申请日：2008-04-25
申请人： Emil Wolf , Yajun Li
发明人： Emil Wolf , Yajun Li
IPC分类号： G11B7/24
CPC分类号： G11B7/24085
摘要： An improved light-readable information recording medium is provided that comprises an optical data storage structure having lands and pits, in which the depth of the pits is about: λ 2  n  m 1 + M T 2 , wherein λ is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MT is the transverse magnification, and n is the refractive index encountered by the reading light inside the pits. The invention also provides an improved optical reading system with the parameters satisfying the relationship: nd = λ 2  n  m 1 + M T 2 , wherein λ is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MT is the transverse magnification, n is the refractive index encountered by the reading light inside the pits, and d is the depth of the pits.

83. 发明授权

US07367510B2 Monitoring light beam position in electro-optical readers and image projectors 有权
标题翻译：监控光电读取器和图像投影仪中的光束位置
公开(公告)号：US07367510B2
公开(公告)日：2008-05-06
申请号：US11593215
申请日：2006-11-06
申请人： Yajun Li , Paul Dvorkis , Dmitriy Yavid , Frederick F. Wood , Miklos Stern , Edward Barkan , Narayan Nambudri
发明人： Yajun Li , Paul Dvorkis , Dmitriy Yavid , Frederick F. Wood , Miklos Stern , Edward Barkan , Narayan Nambudri
IPC分类号： G06K7/10
CPC分类号： G06K7/10702 , G06K7/10683
摘要： An arrangement for determining light beam position in an electro-optical reader, image projector and like devices includes a drive for moving a scanning light beam at a scan frequency across a target as a scan line, and an electro-optical feedback assembly operatively connected to the drive, for optically detecting scan line position during beam movement, and for generating a feedback signal at the scan frequency, the feedback signal being indicative of the scan line position. A feedback coil in the drive is eliminated to avoid electromagnetic coupling between multiple coils in the drive.
摘要翻译：用于确定电光读取器，图像投影仪等装置中的光束位置的装置包括用于以扫描线跨扫描频率移动扫描光束的驱动器，以及电光反馈组件，其可操作地连接到驱动器，用于在光束移动期间光学检测扫描线位置，并且用于在扫描频率处产生反馈信号，反馈信号指示扫描线位置。消除驱动器中的反馈线圈，以避免驱动器中多个线圈之间的电磁耦合。

84. 发明授权

US07182263B2 Monitoring light beam position in electro-optical readers and image projectors 有权
公开(公告)号：US07182263B2
公开(公告)日：2007-02-27
申请号：US10956693
申请日：2004-09-30
申请人： Yajun Li , Paul Dvorkis , Dmitriy Yavid , Frederick F. Wood , Miklos Stern , Edward Barkan , Narayan Nambudri
发明人： Yajun Li , Paul Dvorkis , Dmitriy Yavid , Frederick F. Wood , Miklos Stern , Edward Barkan , Narayan Nambudri
IPC分类号： G06K7/10
CPC分类号： G06K7/10702 , G06K7/10683
摘要： An arrangement for determining light beam position in an electro-optical reader, image projector and like devices includes a drive for moving a scanning light beam at a scan frequency across a target as a scan line, and an electro-optical feedback assembly operatively connected to the drive, for optically detecting scan line position during beam movement, and for generating a feedback signal at the scan frequency, the feedback signal being indicative of the scan line position. A feedback coil in the drive is eliminated to avoid electromagnetic coupling between multiple coils in the drive.

85. 发明授权

US07038853B2 Athermalized plastic lens 失效
公开(公告)号：US07038853B2
公开(公告)日：2006-05-02
申请号：US10745830
申请日：2003-12-24
申请人： Yajun Li , Vladimir Gurevich , Mark Krichever , Edward Barkan , Miklos Stern
发明人： Yajun Li , Vladimir Gurevich , Mark Krichever , Edward Barkan , Miklos Stern
IPC分类号： G02B27/44
CPC分类号： G02B3/08 , G02B5/001 , G06K7/10811
摘要： A plastic lens includes refractive and diffractive optical apparatus configured to produce optothermal changes substantially canceling each other over a predetermined working temperature range to render the plastic lens substantially athermalized over the range.

86. 发明授权

US06719204B2 Mathieu-Gaussian beam for optical scanners 有权
标题翻译：用于光学扫描仪的Mathieu-Gaussian光束
公开(公告)号：US06719204B2
公开(公告)日：2004-04-13
申请号：US10116528
申请日：2002-04-04
申请人： Yajun Li
发明人： Yajun Li
IPC分类号： G06K710
CPC分类号： G06K7/10702 , G06K7/10564 , G06K7/10792
摘要： A laser beam having a Mathieu-Gaussian intensity profile is provided, which may be used for various optical scanning applications at various scanning distances. The Mathieu-Gaussian beam exhibits a zone of illumination characterized by a central spot and side lobes centered on an axis of elongation of the zone of illumination. The zone of illumination may be used with scanners that either generate a single scan line, or another omni- or multi-directional raster pattern, to scan symbols over large variations of distance.
摘要翻译：提供具有Mathieu-Gaussian强度分布的激光束，其可用于各种扫描距离处的各种光学扫描应用。 Mathieu-Gaussian光束表现出以照明区域的伸长轴为中心的中心光点和旁瓣的照明区域。照明区域可以与生成单个扫描线或另一个全向或多方向光栅图案的扫描仪一起使用，以在大的距离变化上扫描符号。

87. 发明授权

US06527180B1 Compact dual optical and scan modules in bar code readers 失效
标题翻译：条形码阅读器中紧凑型双光学和扫描模块
公开(公告)号：US06527180B1
公开(公告)日：2003-03-04
申请号：US09656576
申请日：2000-09-07
申请人： Paul Dvorkis , Yajun Li
发明人： Paul Dvorkis , Yajun Li
IPC分类号： G06K710
CPC分类号： G06K7/10693 , G06K7/10633 , G06K7/1098
摘要： A first module, including a laser for emitting a laser beam and a photodiode for detecting light reflected from a bar code symbol, is independently mounted on a motherboard in a spaced relation to a second module which includes a movable reflector and a drive for moving the reflector. The reflector is advantageously mounted for oscillation on a pair of taut elements constituting an endless band.
摘要翻译：包括用于发射激光束的激光器和用于检测从条形码符号反射的光的光电二极管的第一模块独立地安装在与第二模块间隔开的主板上，该第二模块包括可移动反射器和用于移动反射器。反射器有利地安装成用于振荡在构成无限带的一对拉紧元件上。

88. 发明授权

US5717221A Multiple laser indicia reader optionally utilizing a charge coupled device (CCD) detector and operating method therefor 失效
标题翻译：可选地使用电荷耦合器件（CCD）检测器的多激光标记读取器及其操作方法
公开(公告)号：US5717221A
公开(公告)日：1998-02-10
申请号：US729536
申请日：1996-10-11
申请人： Yajun Li , Robert A. Doran , John Barile
发明人： Yajun Li , Robert A. Doran , John Barile
IPC分类号： G06K7/015 , G06K7/10 , G02B26/10 , H01J3/16
CPC分类号： G06K7/10574
摘要： An electro-optical scanning device reads indicia having parts of different light reflectivity, including bar codes and matrix arrays such as UPSCODES. The scanning device includes laser or light emitting diodes for emitting at least two light beams of the same or different wavelengths. The light beams may be visible to the human eye, and the beams are optically directed to form one or two scan lines to scan portions of a symbol. Dual photosensor(s) or a charge coupled device detects light reflected from the different portions of the symbol. The charge coupled device can be used to detect either reflected ambient light or the reflected visible light from the beams emitted by the diodes. The photosensors generate signals corresponding to the detected light which can be processed simultaneously. The device is particularly useful in reading two dimensional or more complex symbols. Methods for reading indicia are also described.
摘要翻译：电光扫描装置读取具有不同光反射率的部分的标记，包括条形码和诸如UPSCODES的矩阵阵列。扫描装置包括用于发射相同或不同波长的至少两个光束的激光或发光二极管。光束对于人眼可能是可见的，并且光束被光学定向以形成一条或两条扫描线以扫描符号的部分。双光电传感器或电荷耦合器件检测从符号的不同部分反射的光。电荷耦合器件可用于检测来自二极管发射的光束的反射环境光或反射的可见光。光传感器产生对应于可同时处理的检测光的信号。该器件在读取二维或更复杂的符号时特别有用。还描述了读标记的方法。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式