公开(公告)号：EP1112548A1

公开(公告)日：2001-07-04

申请号：EP99952911.8

申请日：1999-09-13

Applicant: Robotic Vision Systems Inc.

Inventor： FIGARELLA, Luis, A. ,  IMRIE, David, A. ,  MCKINLEY, Harry ,  STERN, Howard ,  VAN TASSELL, Jon, E.

IPC: G06K7/10

CPC classification number: G06K7/10742 ,  G06K7/10811

Abstract: A hand held, omnidirectional symbology or bar code reader (10) images linear and two-dimensional bar codes (28; 34; 40; 52; 54) over relatively long working distances. The reader (10) includes an imaging system including a focusing objective taking lens (92) and a two-dimensional photodetector (93) that forms an image of a bar code in X and Y directions simultaneously and generates an electrical signal representative of the code for subsequent downstream processing. Focusing is achieved via a rotating disk (94) that carries a plurality of optical shims (130) or other light controlling surfaces for different focus zones. A through-the-lens (TTL) targeting system is provided to visually assist the user in positioning the reader (10) for a variety of code modalities to assure that a bar code will be captured within the field of view and be sharply imaged on the photodetector (93) when the lens (92) is focused. Two different forms of artificial illumination are provided to accommodate nearby codes that may be either specular or partially diffuse and more distant codes where the reflection characteristics have less impact on code contrast. All of the reader's components are housed in an ergonomically designed shell (12) to reduce user repetitive stress injuries while providing access to a user interface and a protective cover for the reader's various systems.

公开(公告)号：EP1112547A1

公开(公告)日：2001-07-04

申请号：EP99952892.0

申请日：1999-09-10

Applicant: Robotic Vision Systems Inc.

Inventor： DOWLING, John, H. ,  STERN, Howard ,  FIGARELLA, Luis, Alberto ,  McKINLEY, Harry, R. ,  McKINLEY, Philip, E. ,  LEE, Jason, J.

IPC: G06K7/10

CPC classification number: G06K7/10742 ,  G06K7/10811

Abstract: A hand-held imager (10) which is capable of reading both linear and two dimensional symbologies, which can perform focusing and illuminating steps quickly and accurately so as to eliminate variation in the position of the imager (10) relative to the code becoming a negative factor, in which can operate in environment where the imager (10) is anywhere from 1.5 inches to 16 inches from the code. The imager (10) includes an imaging system having a focusing system, an illumination system (82), and a two-dimensional photodetector (93) which forms an image of the coded symbology. After achieving targeting of the coded symbology, the scanning system adjusts the focus between multiple different focuses, and utilizes a portion of the two-dimensional photodetector (93) to determine the optimum focus.

公开(公告)号：EP0997748A3

公开(公告)日：2001-02-21

申请号：EP99126196.7

申请日：1996-07-20

Applicant: Robotic Vision Systems Inc.

Inventor： Stern, Howard ,  Metzger, Robert J.

IPC: G01S17/32 ,  G01S17/89

CPC classification number: G01S17/08 ,  G01S7/491 ,  G01S17/02 ,  G01S17/46 ,  G01S17/87 ,  G01S17/89

Abstract: A chromatic optical ranging sensor, comprising: means for focusing a source beam (30) of optical energy onto a target (6) from a known location, whereby different wavelengths of said source beam are focused at different distances from said known location; means for collecting a reflected beam from said target (6); means for detecting and interpolating said reflected beam to determine a distance of said target from said known location, means for separating said reflected beam into a focused portion and a unfocused portion; and means for determining a ratio of an amplitude of said focused portion to an amplitude of said unfocused portion.

公开(公告)号：EP0827908A1

公开(公告)日：1998-03-11

申请号：EP96306480.3

申请日：1996-09-06

Applicant: Robotic Vision Systems Inc.

Inventor： Schoeffler, Daniel ,  Stern, Howard ,  Costa, Pat V.

IPC: B64D15/20 ,  G08B19/02

CPC classification number: G08B19/02 ,  B64D15/20 ,  G01J4/04 ,  G01J2004/005

Abstract: An apparatus for detecting a polarization altering substance, such as ice, on a surface includes a polarizing filter on the surface between the surface and the polarization altering substance. When the polarizing filter includes alternating regions having orthogonal polarizing properties, only one viewing of the surface through a blocking filter is required. When light, either polarized or unpolarized, reflects off the surface, it passes through the polarizing filter and becomes polarized. Reflected light that additionally passes through ice after leaving the polarizer becomes unpolarized. When viewed through a blocking polarizer filter, polarized light passing through ice appears bright due to the unpolarizing effect of ice. On the other hand, polarized light not passing through ice retains its polarization and appears dark when viewed through a blocking filter. Since the polarizing filter is between the surface and the viewer, the surface can be metallic, dielectric, or painted without affecting the results. If the proper blocking orientation for the viewer is not known in advance, the Stokes coefficients can be calculated if views are taken through a series of specified polarizing filters. The ratio of polarized light returned to the viewer compared to the unpolarized light returned to the viewer can then be calculated from any arbitrary position. A retroreflective substance on the surface further enhances the effect for systems employing an active illumination source located coaxially with or adjacent to the imaging system.

Abstract translation: 用于在表面上检测诸如冰的偏振改变物质的装置包括在表面和偏振改变物质之间的表面上的偏振滤光器。 当偏振滤光器包括具有正交偏振特性的交替区域时，仅需要通过阻挡滤光器观察表面。 当偏振或非偏振的光从表面反射时，它通过偏振滤光器并变成极化的。 离开偏光片之后额外通过冰的反射光变成非偏振光。 当通过阻挡偏振器滤光器观察时，通过冰的偏振光由于冰的非偏振效应而变亮。 另一方面，当通过阻挡滤光片观察时，不通过冰的偏振光保持其偏振并且看起来暗。 由于偏振滤光片位于表面和观察者之间，因此表面可以是金属的，电介质的或涂层的，而不影响结果。 如果预先不知道观察者的正确的阻挡方位，如果通过一系列指定的偏振滤光片拍摄视图，则可以计算斯托克斯系数。 然后可以从任何任意位置计算返回观察者的偏振光与返回观察者的非偏振光相比的比率。 表面上的回射物质进一步增强了使用与成像系统同轴或相邻的有源照明源的系统的效果。

公开(公告)号：EP0726551A1

公开(公告)日：1996-08-14

申请号：EP95119992.6

申请日：1995-12-18

Applicant: Robotic Vision Systems Inc.

Inventor： Stern, Howard

IPC: G08B19/02 ,  B64D15/20

CPC classification number: G08B19/02 ,  B64D15/20 ,  B64F5/20

Abstract: A method and apparatus for detecting a presence of a polarization altering substance on a specular surface includes transmitting light to the surface over a transmitting path and receiving the transmitted light from the surface and from the polarization altering substance. An intensity of the light is measured in an optical non-isolator state and in an isolator state before being compared to reference data established for the specific specular surface. The reference data are preferably established by measuring an intensity of the light in both an optical non-isolator state and in an isolator state for a known surface when the polarization altering substance is absent from the known surface.

Abstract translation: 用于检测镜面上的偏振改变物质的存在的方法和装置包括在透射路径上的表面上传输光，并接收来自表面和偏振改变物质的透射光。 在光学非隔离器状态和隔离器状态下测量光的强度，然后与针对特定镜面确定的参考数据进行比较。 参考数据优选通过在已知表面不存在偏振改变物质时测量已知表面的光学非隔离器状态和隔离器状态下的光的强度而建立。

公开(公告)号：EP0665972A1

公开(公告)日：1995-08-09

申请号：EP93924961.0

申请日：1993-10-20

Applicant: Robotic Vision Systems Inc.

Inventor： STERN, Howard

IPC: B64D15 ,  G08B19

CPC classification number: G08B19/02 ,  B64D15/20

Abstract: For detecting the presence of a substance such as ice or snow on a surface such as the wing of an aircraft, light is emitted from an unpolarized source (13). The unpolarized light passes through a linear polarizer (11) which has a vertical polarization axis. The vertically polarized light passes through a quarter wave retarder plate (12), which changes the linearly polarized light into circularly polarized light. The quarter wave retarder plate (12) has its slow and fast axes both at 45 degrees relative to the vertical axis of the linear polarizer (11). A specular surface (14) reflects the incident circularly polarized light back along path (23). If surface (14) is ice-free, the reflected light will result in an image viewed by the eye (26) alternating between dark and bright, respectively. Any ice or snow covering a portion of surface (14) will cause that portion of the image to maintain the same brightness.

公开(公告)号：EP1112483B1

公开(公告)日：2006-05-24

申请号：EP99951377.3

申请日：1999-09-10

Applicant: Robotic Vision Systems Inc.

Inventor： STERN, Howard

IPC: G06K7/10

CPC classification number: G06K7/10742 ,  G06K7/10732

Abstract: An illumination apparatus (80) is provided for a hand-held imager (30) preferably to provide diffuse illumination for encoded symbology carried directly upon an article, component, etc., or upon a substrate carried by an article. The illumination apparatus (80) is disposed proximate the front of the hand-held imager (30) and is configured to permit light reflected from the target to pass through the illumination apparatus (80) and onto a CCD image receiver (60). An array of unlensed LEDs (114) is disposed to cast approximately or substantially lambertian illumination in a direction away from the target to be imaged and into the hand-held housing (32) to impinge upon surfaces of an illuminator (82) to receive the illumination and, in turn, project efficient and diffuse dark field illumination through the array of unlensed LEDs (114) and towards and onto a location where a target to be imaged would be disposed. The illumination apparatus (80) further includes a bright field illumination source (166) including a plurality of forward facing, towards the target, lensed LEDs (162).

公开(公告)号：EP1360126A2

公开(公告)日：2003-11-12

申请号：EP02705791.8

申请日：2002-01-16

Applicant: Robotic Vision Systems Inc.

Inventor： McGEE, Donald, P. ,  BERTZ, Robert, G. ,  REILLY, Michael ,  BEHNKE, Merlin, E. ,  URBAN, Chris

IPC: B65G27/16

CPC classification number: H02K7/06

Abstract: A vibrator module (66) adapted for use in a taper apparatus (10) for advancing carrier tape (18) having a plurality of compartments and for placing parts (46) in the compartments (34). The vibrator module (66) includes a motor (70) that includes an output shaft (72) that rotates in response to operation of the motor (70). The vibrator module (66) also includes an eccentric weight (74) mounted to and rotatable with the output shaft (72). The eccentric weight (74) causes the motor (70) to vibrate in response to rotation of the output shaft (72) and eccentric weight (74). The vibrator module (66) further includes a vibration transferring member (78) interconnected with the motor (70) and operable to transfer vibrations from the motor (70) to the carrier tape (18) to cause the parts (46) to settle into the bottoms of the compartments (34).

公开(公告)号：EP1358473A2

公开(公告)日：2003-11-05

申请号：EP02704051.8

申请日：2002-01-02

Applicant: Robotic Vision Systems Inc.

Inventor： SHIRES, Mark, R.

IPC: G01N21/88

CPC classification number: G01N21/95684 ,  G01N21/8806

Abstract: An LCC inspecting device includes a mirror having non-parallel front and rear surfaces, and reflective coatings on the front and rear surfaces. The reflective coatings reflect light of frequencies different from each other such that light of a first frequency reflects off the front surface of the mirror and light of a second, different frequency reflects off the rear surface. The LCC device may therefore be inspected from different angles by selectively using light of the first and second frequencies.

公开(公告)号：EP1112522B1

公开(公告)日：2003-10-29

申请号：EP99948229.2

申请日：1999-09-13

Applicant: Robotic Vision Systems Inc.

Inventor： FANTONE, Stephen, D. ,  FIGARELLA, Luis, A. ,  IMRIE, David, A. ,  MCKINLEY, Harry ,  PLUMMER, William, T. ,  STERN, Howard ,  VAN TASSELL, Jon, E.

IPC: G02B7/04 ,  G06K7/10

CPC classification number: G02B26/0875 ,  G02B7/04 ,  G06K7/10811