Illumination Detail (e.g., Led Array) Patents (Class 235/462.42)
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Patent number: 7118042Abstract: Embodiments of a method, apparatus, and article of manufacture for rapidly capturing images in an automated identification system to effectively extend one dimension of a field of view of an image system are disclosed herein. In one embodiment, the image system captures and processes multiple images of at least a portion of a surface of a component in the automated identification system in response to a trigger signal communicated from a triggering device configured to sense a location of the component. Various embodiments of the invention include multiple sources for capturing images, and/or multiple user-specified schemes for effectively extending the field of view of the image system along the axis of component travel in the automated identification system.Type: GrantFiled: January 18, 2002Date of Patent: October 10, 2006Assignee: Microscan Systems IncorporatedInventors: James W. Moore, Danny S. Barnes, Matthew E. Allen
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Patent number: 7109460Abstract: A system for illuminating and reading information on a target (12) includes an illuminating device (14) for illuminating the target, separate from the illuminating device a user wearable reader device (11) for capturing an optical image of the target when illuminated by the illuminating device, detector means (30, 35) for detecting the location of the reader device and adjustment means (36, 22) for adjusting the illumination provided by the illumination device in response to a signal provided by the detector means so that a region (33) on the target illuminated by the illuminating means is readable by the reader device. A method of use of the system and an illumination unit for use in the system are also described.Type: GrantFiled: December 16, 2003Date of Patent: September 19, 2006Assignee: Motorola, Inc.Inventors: Menachem Diamantstein, Yona Newman
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Patent number: 7104452Abstract: An exemplary embodiment of the invention relates to a method and system for simulating data on bar code labels. The system and method include aligning a series of light sources in an array; and driving a selected number of the light sources in the array indicative of data on a bar code label to emit light having a wavelength simulating a light generated from a bar code scanner and reflected from a white space of bar code label.Type: GrantFiled: September 22, 2004Date of Patent: September 12, 2006Assignee: International Business Machines CorporationInventor: Timothy M. Trifilo
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Patent number: 7104455Abstract: Methods of and systems for illuminating objects using planar light illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar light illumination beam is produced from a planar light illumination beam array (PLIA) comprising an plurality of planar light illumination modules (PLIMs). Each PLIM comprises a visible light emitting diode (LED), a focusing lens, and a cylindrical optical element arranged therewith. The individual planar light illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar light illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system.Type: GrantFiled: May 24, 2002Date of Patent: September 12, 2006Assignee: Metrologic Instruments, Inc.Inventors: Constantine J. Tsikos, Timothy A. Good, Michael D. Schnee, Xiaoxun Zhu, Thomas Amundsen, C. Harry Knowles
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Patent number: 7097104Abstract: An image manipulation device is arranged to recover data stored in a pattern printed upon a card. The device includes a linear image sensor that incorporates an array of CMOS light sensors. An illumination assembly is provided that includes a light pipe of plastic material arranged to direct light from an LED over a strip of the card as it is moved by a transport assembly. The lightpipe is formed with a cylindrical lens, to direct light from the LED to a strip across the card, and a series of micro-lenses disposed to focus light reflected from the card onto the light sensors.Type: GrantFiled: December 17, 2004Date of Patent: August 29, 2006Assignee: Silverbrook Research Pty LtdInventors: Kia Silverbrook, Simon Robert Walmsley
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Patent number: 7086594Abstract: Methods of and systems for illuminating objects using planar light illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar light illumination beam is produced from a planar light illumination beam array (PLIA) comprising an plurality of planar light illumination modules (PLIMs). Each PLIM comprises a visible light emitting diode (LED), a focusing lens, and a cylindrical optical element arranged therewith. The individual planar light illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar light illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system.Type: GrantFiled: May 24, 2002Date of Patent: August 8, 2006Assignee: Metrologic Instruments, Inc.Inventors: Constantine J. Tsikos, Timothy A. Good, Michael D. Schnee, Xiaoxun Zhu, Thomas Amundsen, C. Harry Knowles
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Patent number: 7083097Abstract: The present invention provides an optical information reading apparatus capable of producing uniform and bright illumination light and of projecting the illumination light onto an appropriate position on an object of reading at all times. In the apparatus, a light-receiving optical system including a light-receiving sensor and an image formation lens is provided and illumination optical systems each including an LED and an illumination lens device are placed on both sides of the image formation lens. The illumination optical systems are integrally connected to each other through a connecting portion to form a lens-connected assembly. In an incident surface of the illumination lens device, a plurality of convex lens tiers and a plurality of concave lens tiers are alternately made smoothly to form a multi-tiered lens surface, and an output surface thereof is made into a gentle cylindrical configuration to form a rod-like lens surface.Type: GrantFiled: February 26, 2004Date of Patent: August 1, 2006Assignees: Denso Wave Incorporated, Denso Elecs Co., Ltd.Inventors: Hiroshi Toyama, Tadao Ooshima, Makoto Ito
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Patent number: 7080785Abstract: An image-processing device is provided. With respect to each line in a matrix, a shift register is installed for reading a line out that selects a line where a signal in response to carriers accumulated in an accumulation state for generating carriers in the photo diode in response to received light is read out. A second shift register is installed that selects a line for clearing an image signal where the residual carriers in the solid-state image-pickup element are discharged from the solid-state image-pickup element. Shift data applied to a line for reading out an image signal is output to the shift register for reading a line out, based on which signal for selecting a line for reading out an image signal is output.Type: GrantFiled: January 22, 2004Date of Patent: July 25, 2006Assignee: Seiko Epson CorporationInventor: Hiroaki Nasu
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Patent number: 7077324Abstract: The multi-line barcode scanner with no moving parts includes a light source, a light condensing lens and a linear light receiver. When scanning light beams (maybe linear or strip-shaped light beams) emitted from the light source are projecting onto a barcode, the reflected images thereof are focused onto the linear light receiver by the light condensing lens. The characteristics of the structure are that at least one beam splitter and reflectors are disposed at the projecting path from the light source converted into scanning light beam to the barcode, so as to enable the scanner to project two or more scanning light beams onto a same barcode in a non-overlapping manner, thereby selecting a complete barcode image for decoding at a fastest speed and for further increasing the barcode reading rate from the barcode at different angles or positions.Type: GrantFiled: March 21, 2003Date of Patent: July 18, 2006Assignee: Riotec Corp.Inventor: Kai-Yuan Tien
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Patent number: 7077325Abstract: A portable instrument incorporates an electro-optical assembly for reading indicia during a reading mode, and for projecting a bit-mapped image during a display mode. A manually operable switch on the instrument is disposed for selecting one of the modes. The image is formed by pulsing a laser at selected times on selected scan lines.Type: GrantFiled: February 18, 2005Date of Patent: July 18, 2006Assignee: Symbol Technologies, Inc.Inventors: Chinh Tan, Frederick F. Wood, Miklos Stern, Joseph Katz, Shane MacGregor, Altaf Mulla
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Patent number: 7071979Abstract: An image sensing apparatus senses an image by illuminating a document by a light source including three light emitting diodes which emit light of red, green, and blue so that the light reflected from the document is incident on a sensor array which in turn generates an electric signal corresponding to the incident light, wherein a predetermined light emitting diode is also turned on during a period in which no image sensing operation is performed thereby making it possible to stabilize the intensity of light illuminating an image. Thus, the invention provides a high-performance and small-sized image sensing apparatus at a low cost.Type: GrantFiled: June 19, 1997Date of Patent: July 4, 2006Assignee: Canon Kabushiki KaishaInventors: Atsushi Ohtani, Yasuhide Ueno, Masashi Kimura
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Patent number: 7063259Abstract: An optical device which emits a laser light beam (3) comprises a laser light beam emission source (20)(for example, a semiconductor laser diode) including a source of the laser light beam housed in a package (6) provided with a light beam emission window (11). The emission window is shaped so as to be a diaphragm (12) which selects a predetermined portion of the light beam. The size of the window is smaller than the size of the light beam in a transversal cross section taken at the emission window. Moreover, the device comprises a lens (13) for focusing the portion of the light beam. The focusing lens can in turn be housed in the emission window and be itself a diaphragm. In particular, the lens is a Fresnel or diffractive lens.Type: GrantFiled: February 1, 2001Date of Patent: June 20, 2006Assignee: Datalogic S.p.A.Inventor: Guido Maurizio Oliva
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Patent number: 7048188Abstract: An optical reader capable of reading a bar code in a mounted state when an article carrying the bar code passes and of reading bar codes set in array on a menu sheet in a hand-held state has been disclosed. The optical reader comprises a light source, a scanner that is driven by a drive and scans light emanating from the light source, a plurality of reflection mirrors that reflect scanning light scanned by the scanner and create a scanning pattern composed of a plurality of scan trajectories, a read window through which scanning light reflected from the reflection mirrors is emitted, and a light receiver for receiving light reflected from a mark. The optical reader further comprises a mode changer for changing a plurality of operation modes among which one or ones of the plurality of scan trajectories to be validated for reading are different.Type: GrantFiled: September 5, 2002Date of Patent: May 23, 2006Assignee: Fujitsu LimitedInventors: Toshimitsu Kumagai, Mitsuharu Ishii, Yuichirou Takashima, Hiroaki Katoh, Toshitaka Aoki
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Patent number: 7021541Abstract: The invention aims at obtaining an original illuminating apparatus and an image reader having the same with which “the reflection” phenomenon is reduced, and much quantity of light for illumination is obtained in an area to be read of an original to thereby be able to perform the reading operation at high speed.Type: GrantFiled: December 30, 2002Date of Patent: April 4, 2006Assignee: Canon Kabushiki KaishaInventor: Tadao Hayashide
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Patent number: 7017817Abstract: An information code reading apparatus comprises a case, an illuminating light source, and a light receiver. The case has an end portion at which a reading opening is formed. The illuminating light source is disposed within the case and configured to radiate illumination light through the reading opening toward an information code recorded on an object to be read. The light receiver is disposed within the case and configured to receive light reflected from the object through the reading opening. The reflected light returns along a reading light axis residing in a field of view of the light receiver. The reading light axis is oblique to a perpendicular axis to the reading opening, whereby the entire reading opening is illuminated by the light source. The illuminating light source is composed of an area light source disposed outside the field of view in a substantially parallel attitude along the field of view.Type: GrantFiled: February 27, 2003Date of Patent: March 28, 2006Assignee: Denso CorporationInventors: Kunihiko Ito, Tadao Nojiri
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Image capture device for and method of electro-optically reading indicia at low ambient light levels
Patent number: 7014114Abstract: External lighting on a data collection terminal provides additional illumination in which to capture an image of an optical code to be electro-optically read by the terminal.Type: GrantFiled: October 2, 2003Date of Patent: March 21, 2006Assignee: Symbol Technologies, Inc.Inventor: Mitchell H. Maiman -
Patent number: 7000841Abstract: A flexible light assembly is provided. The flexible light assembly is mountable with respect to the underside of the brim of the hat. The light assembly can be made of a flexible resilient material and be conformed to correspond to any configuration of brim. The light assembly 10 includes at least one light emitter, means for powering the light emitter, and means for controlling the emission of light. The light assembly can be completely positional under the brim of a hat. The light assembly can be removably associated with respect to a hat.Type: GrantFiled: May 16, 2003Date of Patent: February 21, 2006Assignee: Angel Lighting LLCInventor: Kenneth Becker
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Patent number: 6997385Abstract: In an apparatus and a method for acquiring and reading optical codes, the indication of the reading result is carried out projecting a luminous figure onto the optical code, that is to say in the position on which the attention of the operator is focused. The luminous figure can have an information content also more complex than the simple indication of the end of the reading.Type: GrantFiled: June 28, 2004Date of Patent: February 14, 2006Assignee: Datalogic S.p.A.Inventors: Valeria Palestini, Nicola Alessi, Giacomo Rigoni, Cristiano Oliva
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Patent number: 6896184Abstract: A planar laser illumination and imaging (PLIIM) based system having a linear image formation and detection module disposed in a system housing, and having image formation optics with a field of view projectable through an aperture in the housing and onto an object moving relative thereto during object illumination and imaging operations. A pair of planar laser illumination arrays (PLIAs) are disposed on the system housing. Each planar laser array (PLIA) includes a plurality of laser diodes arranged together in a linear manner. The planar laser illumination arrays are arranged in relation to the linear image formation and detection module, and produce a pair of planar laser illumination beams (PLIBs). The pair of stationary planar laser illumination beams are projected through light transmission apertures in the system housing and oriented such that the plane of the planar laser illumination beams is coplanar with the field of view of the linear image formation and detection module.Type: GrantFiled: November 15, 2002Date of Patent: May 24, 2005Assignee: Metrologic Instruments, Inc.Inventors: Constantine J. Tsikos, Michael D. Schnee, Xiaoxum Zhu, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Carl Harry Knowles
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Patent number: 6877664Abstract: A device for the aiming and the visual indication of a reading area of a coded information reader includes an emitter which emits a preferably collimated light beam towards a reading area of a coded information reader, as well as a refractive optical element. The refractive optical element deflects at least one first portion of the light beam so as to generate at least two different beam portions active on at least two different zones of the reading area along at least two different optical paths. The refractive optical element includes opposed first and second faces which respectively collect the light beam and project the at least two beam portions onto the reading area. The second face includes at least one (preferably more than one) first surface portion inclined by a predetermined angle ? with respect to the first face and adapted to deflect the at least one first light beam portion by a predetermined deflection angle ? with respect to the optical axis Z.Type: GrantFiled: October 16, 2000Date of Patent: April 12, 2005Assignee: Datalogic S.p.A.Inventor: Guido M. Oliva
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Patent number: 6840452Abstract: A light source module has a laser diode, and a circuit board. The circuit board includes the laser diode, a driver circuit for the laser diode, and a connector for receiving a power supply for driving the laser diode from an electric power source. A lens and an aperture shapes the laser beam emitted from the laser diode. A housing made of electrical insulating material contains the lens, the aperture and the circuit board except for a portion of the circuit board where the connector is mounted.Type: GrantFiled: May 15, 2001Date of Patent: January 11, 2005Assignee: Fujitsu LimitedInventors: Masanori Ohkawa, Toshiyuki Ichikawa, Hiroshi Watanuk, Kozo Yamazaki
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Patent number: 6832725Abstract: An imaging module in one embodiment includes at least one multiple color emitting light source comprising a plurality of different colored LED dies each independently driveable so that the overall color emitted by the light source can be controlled and varied. The multiple color emitting light source can be controlled so that the color emitted by the light source is optimized for imaging or reading in a present application environment of the module. Further, the module can be configured so that control of the multiple color emitting light source automatically varies depending on a sensed condition, such a color present in a field of view of the module, the distance of the module to a target, and/or a predetermined criteria being met so that feedback is provided to a user. The module in a further aspect can include illumination light sources and aiming light sources which project light in different wavelength emission bands.Type: GrantFiled: March 7, 2002Date of Patent: December 21, 2004Assignee: Hand Held Products, Inc.Inventors: Robert C. Gardiner, Charles P. Barber, Eric Coleman, Michael Ehrhart, Colleen P. Gannon, Robert J. Hennick, William H. Havens, Vivian L. Hunter, Melvin D. McCall, Thomas Ruhlman
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Patent number: 6832727Abstract: A display scanner includes an optical panel having a plurality of stacked optical waveguides. The waveguides define an inlet face at one end and a screen at an opposite end, with each waveguide having a core laminated between cladding. A projector projects a scan beam of light into the panel inlet face for transmission from the screen as a scan line to scan a barcode. A light sensor at the inlet face detects a return beam reflected from the barcode into the screen. A decoder decodes the return beam detected by the sensor for reading the barcode. In an exemplary embodiment, the optical panel also displays a visual image thereon.Type: GrantFiled: April 30, 1999Date of Patent: December 21, 2004Assignee: Brookhaven Science AssociatesInventor: James T. Veligdan
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Patent number: 6830189Abstract: Methods of and systems for illuminating objects using planar laser illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar laser illumination beam is produced from a planar laser illumination beam array (PLIA) comprising an plurality of planar laser illumination modules (PLIMs). Each PLIM comprises a visible laser diode (VLD, a focusing lens, and a cylindrical optical element arranged therewith. The individual planar laser illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar laser illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system.Type: GrantFiled: June 15, 2001Date of Patent: December 14, 2004Assignee: Metrologic Instruments, Inc.Inventors: Constantine J. Tsikos, Allan Wirth, Andrew Jankevics, Steve Y. Kim, Timothy Good, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Xiaoxun Zhu, Michael D. Schnee, Carl Harry Knowles
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Patent number: 6827269Abstract: A scanner for the detection of one-dimensional and/or two-dimensional codes has a light receiver arranged in a housing and an optical receiving system associated therewith and also accommodated in the housing. At least one light source is additionally provided in the housing to illuminate the region to be scanned arranged in a scanning plane. At least one of the light source and the optical receiving system is movable in order to allow a reading distance between the housing and the object plane to be varied.Type: GrantFiled: February 26, 2001Date of Patent: December 7, 2004Assignee: Sick AGInventor: Wolfram Runge
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Patent number: 6824061Abstract: An hand-held optical symbol scanner assembly employs black-light diodes to illuminate luminescent or phosphorescent bar code symbols that are invisibly printed or formed the surface of an article. The scanner has an array of far blue or UV LEDs or laser diodes on its distal face, and a nosepiece or shroud mounted on the distal face of the scanner device. There can be a transparent plate at the distal end of the nosepiece, mounted at an angle to the optic axis, and a filter (yellow or orange) in advance of the imager device within the scanner.Type: GrantFiled: August 1, 2003Date of Patent: November 30, 2004Assignee: Industrial Data Entry Automation System IncorporatedInventors: John R. Hattersley, Francis O. Blackwell, III
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Patent number: 6817525Abstract: An apparatus and a method for reading an optical code has a casing with a reading window. The casing includes an illumination device acting through the reading window on an optical code to be read, a detection device responsive to light scattered from the illuminated optical code into the casing through the reading window, and an objective lens interposed between the reading window and the detection device, in a position to pick up the light scattered from the illuminated optical code and project this light onto the detection device. The detection device has a plurality of light-sensitive elements effective to convert the light to electric signals representing the light image, wherein the illumination device has a first array of light sources active in a first illumination configuration, and at least a second array of light sources active in at least a second illumination configuration different from the first one.Type: GrantFiled: May 27, 1999Date of Patent: November 16, 2004Assignee: Datalogic S.p.A.Inventors: Marco Piva, Maurizio Bianchi
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Patent number: 6808114Abstract: In an apparatus and a method for acquiring and reading optical codes, the indication of the reading result is carried out projecting a luminous figure onto the optical code, that is to say in the position on which the attention of the operator is focused. The luminous figure can have an information content also more complex than the simple indication of the end of the reading.Type: GrantFiled: June 21, 2000Date of Patent: October 26, 2004Assignee: Datalogic S.p.A.Inventors: Valeria Palestini, Nicola Alessi, Giacomo Rigoni, Cristiano Oliva
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Patent number: 6805449Abstract: A presentation imaging system used for imaging machine readable information on an object is provided. The system includes an imaging device coupled to a processor. The imaging device senses the presence of an object within a field of view. A light source projects a structured beam at a first intensity to define an imaging area generally co-extensive with the field of view. Upon detection of the object, the processor signals the light source to project the beam at a second, higher intensity for imaging.Type: GrantFiled: October 28, 2003Date of Patent: October 19, 2004Assignee: Accu-Sort Systems, Inc.Inventor: Kurt Hecht
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Publication number: 20040188527Abstract: A barcode scanner includes at least a laser emitter, a collimator, a light condensing lens and a linear light receiver. When the scanning light beams from the laser emitter are projected onto a barcode through the collimator, a barcode signal is produced from the reflected image thereof focused onto the linear light receiver through the light condensing lens. The characteristics thereof are that at least one beam splitter and reflector are disposed at the projecting path of the scanning light beams from the laser emitter and the collimator to barcode, so as to enable the scanner to act as a multiple light sources structure, thereby distributing the scanning light beams more evenly with lower production cost and material.Type: ApplicationFiled: March 24, 2003Publication date: September 30, 2004Inventor: Kai-Yuan Tien
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Patent number: 6779725Abstract: An image reader comprises a light source illuminating an original, an optical guide system configured to guide a light beam reflected from the original and conveying information about an image on the original, a light-receiving unit configured to receive the light beam guided by the optical guide system and to convert the information about the image into electric signals, a stay member holding the light-receiving unit, a balance weight configured to act on the stay member and to reduce oscillation of the light-receiving unit, and a balance-weight holding structure configured to hold the balance weight in an unrestrained state with respect to the stay member.Type: GrantFiled: June 6, 2002Date of Patent: August 24, 2004Assignee: Ricoh Company, Ltd.Inventors: Masashi Kohchi, Masaru Watanabe, Tomoaki Suga
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Patent number: 6772948Abstract: An improvement in manual bar code readers to improve the reliability and eliminate read errors. The improvement comprises a plurality of sensors in a single unit arranged such that a single manual scan results in multiple reads of the bar code. The results of the reads are then compared bit-wise and any read error in any bit is corrected via a bitwise majority voting scheme.Type: GrantFiled: December 28, 2000Date of Patent: August 10, 2004Assignee: Ericsson Inc.Inventor: Seung Kil Kim
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Patent number: 6766954Abstract: An omnidirectional optical code reader employs two or more line photo sensor arrays orientated at an angle to one another. Electrical signals from the photo sensor arrays may be converted to digital signals by circuitry located on the die of each of the line photo sensors. Code reader circuitry is located on a circuit board orientated vertically in a backwardly sloping handle of a gun-shaped housing.Type: GrantFiled: June 15, 2001Date of Patent: July 27, 2004Assignee: Symbol Technologies, Inc.Inventors: Edward Barkan, Mehul Patel
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Publication number: 20040125413Abstract: A method for printing a large invisible luminescent bar code on a mail piece addresses the problem of obscuration of modules by printed text such as the address. The bar code is printed large enough so that the line width of the characters is substantially less than the module size of the bar code components. Overprinting does not then completely obscure any module and so the bar code is still readable. The readability is especially enhanced by the high contrast of the luminescent image. When a fluorescent bar code is viewed under UV illumination, the bar code emits fluorescence in the areas of printed modules without text overprinted. Because the modules are wider than the text line width, the text does not completely obscure any module. The contrast of the bar code is reversed in fluorescence—that is, printed areas emit light.Type: ApplicationFiled: December 30, 2002Publication date: July 1, 2004Applicant: Pitney Bowes IncorporatedInventor: Robert A. Cordery
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Patent number: 6698659Abstract: A radius of curvature of a projection lens for projecting illumination light on bar codes varies in the arranging direction of the line sensor to collimate the illumination light at each point along the extending direction of the projection lends such that a focal distance at each point agrees with a distance between the point and the position of the LED.Type: GrantFiled: September 13, 2001Date of Patent: March 2, 2004Assignee: Denso CorporationInventor: Kunihiko Itou
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Patent number: 6674416Abstract: A photoelectric sensor 11 has a level display unit (28). The level display unit (28) is constituted by arranging a plurality of 7-segment indicators (33). The 7-segment indicators (33) are partially constituted of red LED segments (33b) and partially constituted of red/green two-color LED segments (33a). For a digital display, all of the segments are illuminated in red to display numerals. For a graph display, the red/green two-color LED segments are illuminated in green to present a bar graph.Type: GrantFiled: March 16, 2000Date of Patent: January 6, 2004Assignee: Omron CorporationInventors: Takashi Kamei, Kiyoshi Imai
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Patent number: 6659350Abstract: These and other objects of the present invention are attained by apparatus for adjusting the position of a line of light in barcode space that includes a support frame having a rear housing containing a solid state imager and a pair of support arms extending forwardly from the front of the housing. An imaging lens is mounted between the arms for focusing an image of a target in barcode space upon the solid state imager along the optical axis of the imaging lens. Illuminating LEDs are mounted on either side of the imaging lens for illuminating the target. The illumination is passed through a pair of cylindrical lenses that are adjustably mounted upon the distal ends of the arm so that the light can be selectively positioned in barcode space.Type: GrantFiled: February 20, 2002Date of Patent: December 9, 2003Assignee: Hand Held ProductsInventors: Eric D. Schwartz, Edward B. Hubben, Brian L. Jovanovski, Vivian L. Hunter, Melvin D. McCall, Gerard F. Beckhusen
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Patent number: 6661521Abstract: An illumination apparatus is provided for a hand-held imager 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 is disposed proximate the front of the hand-held imager and is configured to permit light reflected from the target to pass through the illumination apparatus and onto a CCD image receiver. An array of unlensed LED's 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 to impinge upon surfaces of an illuminator to receive the illumination and, in turn, project efficient and diffuse dark field illumination through the array of unlensed LED's and towards and onto a location where a target to be imaged would be disposed.Type: GrantFiled: September 11, 1998Date of Patent: December 9, 2003Assignee: Robotic Vision Systems, Inc.Inventor: Howard Stern
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Publication number: 20030213847Abstract: The present invention is an imaging module including various optical components and a circuit board, which, in one embodiment, carries essentially an entirety of illumination and aiming LEDs of the module. The module includes a combination of features which result in the size of the module being reduced. The module may comprise a refractive optic diffuser plate manufactured using a textured surface mold.Type: ApplicationFiled: May 27, 2003Publication date: November 20, 2003Applicant: Welch Allyn Data Collection, Inc.Inventors: Melvin D. McCall, Vivian L. Hunter, Charles P. Barber, William H. Havens, Eric Coleman, Michael Ehrhart, Robert J. Hennick
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Patent number: 6637893Abstract: A presentation imaging system used for imaging machine readable information on an object is provided. The system includes a proximity sensor and an imaging device coupled to a processor. The sensor senses the presence of an object within a field of view. A light source projects a structured beam at a first intensity to define an imaging area generally co-extensive with the field of view. Upon detection of the object, the processor signals the light source to project the beam at a second, higher intensity for imaging.Type: GrantFiled: March 22, 2002Date of Patent: October 28, 2003Assignee: Accu-Sort Systems, Inc.Inventor: Kurt Hecht
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Patent number: 6631846Abstract: The invention relates to an apparatus and a method for reading an optical code. The apparatus having a casing with a reading window; the casing having an illuminator acting through the reading window on an optical code to be read, a detector responsive to light scattered from the illuminated optical code into the casing through the reading window, and an objective lens interposed between the reading window and the detector, in a position to pick up the light scattered from the illuminated optical code and project this light onto the detector. The detector having a plurality of light-sensitive elements effective to convert the light to electric signals representing the light image. The apparatus is characterized in that the illuminator has a first array of light sources active in a first illumination configuration, and at least a second array of light sources active in at least a second illumination configuration different from the first one.Type: GrantFiled: August 7, 2001Date of Patent: October 14, 2003Assignee: Datalogic S.p.A.Inventors: Marco Piva, Maurizio Bianchi
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Patent number: 6631842Abstract: Methods of and systems for illuminating objects using planar laser illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each planar laser illumination beam is produced from a planar laser illumination beam array (PLIA) comprising an plurality of planar laser illumination modules (PLIMs). Each PLIM comprises a visible laser diode (VLD, a focusing lens, and a cylindrical optical element arranged therewith. The individual planar laser illumination beam components produced from each PLIM are optically combined to produce a composite substantially planar laser illumination beam having substantially uniform power density characteristics over the entire spatial extend thereof and thus the working range of the system.Type: GrantFiled: November 24, 2000Date of Patent: October 14, 2003Assignee: Metrologic Instruments, Inc.Inventors: Constantine J. Tsikos, Michael D. Schnee, Xiaoxun Zhu, Thomas Amundsen, Charles A. Naylor, Russell Joseph Dobbs, Carl Harry Knowles
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Publication number: 20030160100Abstract: An information code reading apparatus comprises a case, an illuminating light source, and a light receiver. The case has an end portion at which a reading opening is formed. The illuminating light source is disposed within the case and configured to radiate illumination light through the reading opening toward an information code recorded on an object to be read. The light receiver is disposed within the case and configured to receive light reflected from the object through the reading opening. The reflected light returns along a reading light axis residing in a field of view of the light receiver. The reading light axis is oblique to a perpendicular axis to the reading opening, whereby the entire reading opening is illuminated by the light source. The illuminating light source is composed of an area light source disposed outside the field of view in a substantially parallel attitude along the field of view.Type: ApplicationFiled: February 27, 2003Publication date: August 28, 2003Inventors: Kunihiko Ito, Tadao Nojiri
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Patent number: 6607128Abstract: The invention is optical assembly for use in a barcode reader that includes a frame having a rear housing and a pair of arms outwardly extended from the housing. An optical card containing an imaging lens is slidably received in a rear guideway situated between the arms. An aperture card is slidably received in a front guideway situated between the arms in front of the lens. Lamp support brackets are also mounted to either side of the arms. Each bracket contains a pair of LEDs that are aligned in coplanar relation with the imaging lens. A cylindrical lens is mounted in front of the lamp support brackets within the arms of the frame to magnify and focus the illumination from the LED upon a target in barcode space. A horizontally extended field stop aperture is positioned in front of each LED.Type: GrantFiled: September 11, 2000Date of Patent: August 19, 2003Assignee: Welch Allyn Data Collection Inc.Inventors: Eric D. Schwartz, Edward B. Hubben, Brian L. Jovanvoski, Vivian L. Hunter, Melvin D. McCall
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Patent number: 6601768Abstract: The present invention is an imaging module including various optical components and a circuit board, which, in one embodiment, carries essentially an entirety of illumination and aiming LEDs of the module. The module includes a combination of features which result in the size of the module being reduced. The module may comprise a refractive optic diffuser plate manufactured using a textured surface mold.Type: GrantFiled: March 8, 2001Date of Patent: August 5, 2003Assignee: Welch Allyn Data Collection, Inc.Inventors: Melvin D. McCall, Vivian L. Hunter, Charles P. Barber, William H. Havens, Eric Coleman, Michael Ehrhart, Robert J. Hennick
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Patent number: 6595422Abstract: An apparatus and method for reading a bar code on an object includes a light diffusing cavity and a deflector. The deflector deflects and diffuses light from a light source which may be part of a bar code reader. Preferably the deflector deflects substantially all of the light from the reader, so that none of the light from the light source directly illuminates the bar code. Inner side wall surfaces of the light diffusing cavity redirect the deflected light to indirectly illuminate the bar code. Despite deflecting light from the light source, the deflector allows unhindered passage of light emanating from the bar code to a light detection system which may be part of the bar code reader.Type: GrantFiled: June 23, 1999Date of Patent: July 22, 2003Assignee: Assure Systems, Inc.Inventor: Frank A. Doljack
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Publication number: 20030098351Abstract: A reflection cowl for a bar-code scanner features that the light source wherein is a mono luminous element of light-emitting diode (LED) with a reflection cowl disposed in the rear aspect thereof; the said reflection cowl is divided by the center line passed through the light source into a left and a right portions of reflection curved surfaces; respectively, the left and the right portions of the curved surfaces have a plurality of concaved reflection spherical surfaces thereon; all the said reflection spherical surfaces have the function of distributing the light so as to make all the light rays reflected back from all the reflection spherical surfaces fall evenly on the convex light stick, thereby adjusting the curvature of the reflection cowl further adjusts the left and the right distribution areas of the reflected light, that means, evenly distributes the brightness at the center and on the side rim thereof.Type: ApplicationFiled: November 29, 2001Publication date: May 29, 2003Inventors: Kenneth Liou, Ting-Hao Hsiao
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Patent number: 6543693Abstract: A scanning device incorporates a vertical cavity surface emitting laser (VCSEL). The laser diode may be mounted directly on an Si substrate which is adapted for movement to produce a scan pattern. A collimating lens may be directly mounted on the emitting surface of the laser. A plurality of lasers may be mounted on the substrate and operated in sequence without movement of the substrate to produce the effect of a scan. A single, variable-focal length lens is employed to focus each beam of the VCSEL at a different distance. The scanning device emits visible or invisible light towards a target such as a bar code and a detector (mounted on the same or an adjacent substrate) senses the light reflected by the target to produce data which is decoded for further processing. A VCSEL uses low current and emits light from a relatively large area so that a relatively large amount of light is emitted for relatively small heat generation.Type: GrantFiled: April 26, 2000Date of Patent: April 8, 2003Assignee: Symbol Technologies, Inc.Inventors: Miklos Stern, Vladimir Gurevich, Mark Krichever
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Publication number: 20020125322Abstract: The present invention is an imaging module including various optical components and a circuit board, which, in one embodiment, carries essentially an entirety of illumination and aiming LEDs of the module. The module includes a combination of features which result in the size of the module being reduced. The module may comprise a refractive optic diffuser plate manufactured using a textured surface mold.Type: ApplicationFiled: March 8, 2001Publication date: September 12, 2002Inventors: Melvin D. McCall, Vivian L. Hunter, Charles P. Barber, William H. Havens, Eric Coleman, Michael Ehrhart, Robert J. Hennick
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Publication number: 20020096566Abstract: These and other objects of the present invention are attained by apparatus for adjusting the position of a line of light in barcode space that includes a support frame having a rear housing containing a solid state imager and a pair of support arms extending forwardly from the front of the housing. An imaging lens is mounted between the arms for focusing an image of a target in barcode space upon the solid state imager along the optical axis of the imaging lens. Illuminating LEDs are mounted on either side of the imaging lens for illuminating the target. The illumination is passed through a pair of cylindrical lenses that are adjustably mounted upon the distal ends of the arm so that the light can be selectively positioned in barcode space.Type: ApplicationFiled: February 20, 2002Publication date: July 25, 2002Applicant: Welch Allyn, Inc.Inventors: Eric D. Schwartz, Edward B. Hubben, Brian L. Jovanovski, Vivian L. Hunter, Melvin D. McCall, Gerard F. Beckhusen