Method and apparatus for scanning optical code

An optical aberration is intentionally introduced into the optical system which produces the scanning beam of an optical code scanner, in order to produce a scanning beam which has plural focal points or waists at different distances from the scanner. The operating range of the scanner can thereby be increased by taking advantage of different beam waist locations when the optical code is at different distances from the scanner. In accordance with an embodiment of the invention, coma is intentionally introduced to an optical system providing a light beam for an optical code scanner. This provides a scanning beam with plural beam waists at different distances from the scanner. This may be accomplished by orienting the light source and focusing optical system so that their optical axes intersect or by introducing an optical member, such as a prism, between the original light source and the focusing optical system.

Optical Information Reading Device

Provided is an optical information reading device that can reduce an installation load on a user, and can accurately read a code provided to each of various workpieces. A polarized illumination light source includes light emitters that irradiate the workpiece with illumination light through a polarization filter. A non-polarized illumination light source includes light emitters that irradiate the workpiece with illumination light without through a polarization filter. An imaging element is provided with a polarization filter having a polarization direction different from a polarization direction of the polarization filter of the light emitters. Either of the polarized illumination light source and the non-polarized illumination light source is used in accordance with the workpiece. 118-. (canceled)19. A code reading device for reading a code on a workpiece , comprising:a housing;a window portion provided on a front surface side of the housing and having translucency;a first light emitters provided in the housing and configured to output light;a first polarization filter provided in the first region of the window portion and light output from the first light emitters passing through the first region of the window portion;a second light emitters provided in the housing and configured to output light to an outside of the housing through a second region of the window portion which is a different region from the first region of the window portion and in the absence of any polarization filter, wherein the number of first light emitters is larger than the number of second light emitters;a second polarization filter provided in a third region of the window portion which is a different region from the first region and the second region of the window portion, and a polarization direction of the second polarization filter being different from a polarization direction of the first polarization filter;an imaging section configured to receive light output from the first light ...

BIOPTIC BARCODE READER

A bioptic barcode reader has a housing having a lower housing portion with an upper surface and an upper housing portion extending above the lower housing portion. A generally horizontal window is positioned at the upper surface and a generally upright window is positioned in the upper housing portion. An illumination assembly has an illumination field-of-view and an imaging assembly, including an image sensor, has an imaging field-of-view with a centerline that is directed at an angle relative to the upper surface. A mirror arrangement is configured to split the imaging field-of-view into first and second portions, redirect the first portion of the imaging field-of-view through the generally upright window, and redirect the second portion of the imaging field-of-view and the illumination field-of-view through the generally horizontal window such that the second portion is covered by the illumination field-of-view at the generally horizontal window. 1. A bioptic barcode reader , comprising:a housing having a lower housing portion with an upper surface facing a product scanning region and an upper housing portion extending above the lower housing portion;a generally horizontal window positioned at the upper surface of the lower housing portion, the generally horizontal window configured to allow a first light to pass between the product scanning region and an interior region of the housing;a generally upright window positioned in the upper housing portion, the generally upright window configured to allow a second light to pass between the product scanning region and the interior region of the housing;an illumination assembly having an illumination field-of-view;an imaging assembly including an image sensor, the imaging assembly having an imaging field-of-view with a centerline that is directed at an angle relative to the upper surface; anda mirror arrangement positioned within the interior region, the mirror arrangement configured to split the imaging field-of-view ...

BIOPTIC SCANNER OPTICAL ARRANGEMENT WITH SINGLE SENSOR SPLIT FOUR WAYS

A bioptic scanner optical arrangement with a single sensor split four ways is disclosed herein. An example bioptic scanner optical arrangement includes a housing, an imaging assembly having a primary FOV, a decode module, a generally horizontal window supported by the housing, a generally upright window supported by the housing, and a mirror arrangement positioned within the interior region. The mirror arrangement is configured to divide the primary FOV into a plurality of subfields, to redirect at least two of the plurality of subfields through the generally horizontal window, and to redirect at least another two of the plurality of subfields through the generally upright window. The bioptic barcode reader has no other imaging assembly communicatively coupled to the decode module and used to process images for decoding indicia. 1. A bioptic barcode reader for capturing images of targets presented in a product-scanning region of the bioptic barcode reader , the bioptic barcode reader comprising:a housing having an interior region;an imaging assembly having a primary FOV, the imaging assembly including an image sensor with a plurality of photosensitive elements forming a substantially flat surface;a decode module communicatively coupled to the imaging assembly and configured to decode a barcode captured in an image by the imaging assembly;a generally horizontal window supported by the housing, the generally horizontal window configured to allow a first light to pass between the product-scanning region and the interior region of the housing;a generally upright window supported by the housing, the generally upright window configured to allow a second light to pass between the product-scanning region and the interior region of the housing; anda mirror arrangement positioned within the interior region, the mirror arrangement configured to divide the primary FOV into a plurality of subfields, (i) redirect at least two of the plurality of subfields through the generally ...

Polygon scanner and method of detecting objects in a monitored zone

A polygon scanner ( 10 ) for detecting objects ( 24 ) in a monitored zone ( 22 ) is provided having a light transmitter ( 12 ); having a light receiver ( 30 ); having an evaluation unit ( 32 ); and having a rotatable mirror unit ( 20 ) for a periodic deflection of the light beam ( 16 ) that has a plurality of mirror facets ( 34 ) in order thus to scan an angular section multiple times per rotation of the mirror unit ( 20 ) by a respective mirror facet ( 34 ), wherein at least some of the mirror facets ( 34 ) have a different curvature from one another. In this respect, at least one of the mirror facets ( 34 ) is configured as a free-form surface whose curvature is adapted to the angle of incidence of the transmitted light beam ( 16 ) on the mirror facet ( 34 ) that varies during the rotation of the mirror unit ( 20 ).

COMPACT DUAL-LED ILLUMINATION SYSTEM

An optical assembly for illuminating at least one object appearing in a field of view (FOV). The optical assembly includes first and second illumination sources configured to provide first and second illumination to illuminate a target of the object. An aperture configured to collimate the first and second illumination and to provide the illumination to a dual collimator. The dual collimator is disposed to collimate the first and second illumination and to provide the first and second illumination to a dual microlens lens array (MLA). The dual MLA has microlens arrays configured to receive the collimated first and second radiation, to provide two illumination output fields, each output field having a different output illumination field angle. 1. An optical assembly for illumination of a target , the optical assembly comprising:a first illumination source configured to provide first illumination along a first optical axis;a second illumination source configured to provide second illumination along a second optical axis, the second optical axis being not coaxial with the first optical axis;an aperture element having a first aperture disposed along the first optical axis and a second aperture disposed along the second optical axis, the first aperture configured to transmit the first illumination and the second aperture configured to transmit the second illumination;a collimator element having a first collimator disposed along the first optical axis and a second collimator lens disposed along the second optical axes, the collimator element configured to receive the first illumination and the second illumination from the aperture element and further configured to collimate the first illumination and the second illumination; anda microlens array element having a first microlens array disposed along the first optical axis and a second microlens array disposed along the second optical axes, the microlens array element having a first surface and a second surface, and the ...

LASER LIGHT BEAM SCANNING DEVICE FOR READING CODED INFORMATION

The present invention is relative to a scanning device () of a laser light beam () for reading coded information, comprising: 1. A scanning device of a laser light beam for reading coded information , comprising:an emission source of a laser light beam, the laser light beam defining an optical path;an optical element for scanning the laser light beam on a support containing coded information; anda linear polarizer located along the optical path of said laser light beam, upstream of the optical element for scanning, said polarizer being apt to linearly polarize a first portion of said laser light beam in substantially one first plane (s) and direct said polarized portion towards said optical element for scanning.2. The scanning device according to claim 1 , wherein said linear polarizer is substantially transparent for a second portion (p) of said laser light beam not directed towards said optical element for scanning.3. The scanning device according to claim 2 , further comprisingan optical element for collecting the light coming from said support;a photoreceiver, which is sensitive to the light collected from the collecting optical element, to generate a signal representative of the information contained in said support;wherein said linear polarizer is located upstream of said collecting optical element in the propagating direction of said light coming from said support.4. The scanning device according to claim 1 , said scanning device being retroreflective.5. The scanning device according to claim 1 , including a further emission source of a further laser light beam which defines a further optical path claim 1 , said optical path of said laser light beam and said further optical path of said further optical laser light beam being substantially parallel claim 1 , wherein said linear polarizer is located along the optical path of said laser light beam and along the further optical path of said further laser light beam and upstream the optical element for scanning in ...

Optical Information Reading Device

Provided is an optical information reading device that can reduce an installation load on a user, and can accurately read a code provided to each of various workpieces. A polarized illumination light source includes light emitters that irradiate the workpiece with illumination light through a polarization filter. A non-polarized illumination light source includes light emitters that irradiate the workpiece with illumination light without through a polarization filter. An imaging element is provided with a polarization filter having a polarization direction different from a polarization direction of the polarization filter of the light emitters. Either of the polarized illumination light source and the non-polarized illumination light source is used in accordance with the workpiece. 118-. (canceled)19. A fixed code reading device for reading a code on a workpiece , comprising:a housing;a window portion provided on a front surface side of the housing and having translucency;a first light source provided in the housing and configured to output light;a first polarization filter provided in the first region of the window portion and light output from the first light source passing through the first region of the window portion;a second light source provided in the housing and configured to output light to an outside of the housing through a second region of the window portion which is a different region from the first region of the window portion and in the absence of any polarization filter;a second polarization filter provided in a third region of the window portion which is a different region from the first region and the second region of the window portion, and a polarization direction of the second polarization filter being different from a polarization direction of the first polarization filter;a storage unit configured to store setting data including an illumination condition information which indicates which of the polarization mode and the non-polarization mode ...

IMAGING BARCODE SCANNER WITH MULTIPLE INDEPENDENT FIELDS OF VIEW

A barcode scanner which uses different wavelengths of light to produce different fields of view. An example barcode scanner includes a plurality of light devices each having a different wavelength of light and each associated with a different field of view for illuminating an item with a barcode, a plurality of waveband mirrors each reflecting one of the different wavelengths of light from the light devices and transmitting other wavelengths of light, an imager for receiving the different wavelengths of light reflected from the waveband mirrors and for producing corresponding images, and a controller configured to sequentially activate the light devices and the imager and to decode the barcode in an at least one of the images received from the imager. 1. An image capture device comprising:a plurality of waveband mirrors each reflecting a different wavelength of light associated with a different field of view and transmitting other wavelengths of light; andan imager for receiving the different wavelengths of light reflected from the waveband mirrors, wherein the imager receives each wavelength for each field of view individually at a particular instant in time from a particular light device that is pulsing at a given frame rate recognized by the imager.2. The image capture device of claim 1 , wherein the imager is also for receiving another wavelength of light associated with another field of view.3. The image capture device of claim 2 , wherein the other wavelength of light passes through at least one of the waveband mirrors.4. The image capture device of claim 2 , wherein the waveband mirrors are oriented in line such that the other wavelength of light passes through all of the waveband mirrors.5. A barcode scanner comprising:a plurality of light devices each having a different wavelength of light and each associated with a different field of view for illuminating an item with a barcode;a plurality of waveband mirrors each reflecting one of the different ...

MULTIPURPOSE DETECTION UNIT

A device () for readout of and/or communication with a consumer carried token is proposed comprising a first area () for wireless radiofrequency detection and/or communication; and a second area () spatially separated from said first area for a wireless optical detection and/or communication; wherein said first area () is located above said second area (). Said second area () comprises a cavity with at least a front opening () for inserting said token by a user, bordered by at least a bottom surface (), a backside wall (), and a top illumination unit (), wherein said top illumination unit () comprises at least one essentially vertical translucent skirt () with its free edge () pointing towards the second area (); as well as an opening (). Behind and/or below said first area () a scanning light source as well as scanning camera is located, both aiming in an upward direction, and above said scanning light source as well as scanning camera a mirror () is mounted, for at the same time deflecting the scanning light beam () and directing it () into said second area () onto said bottom surface () through said opening () in an essentially vertical direction. 1. A device for at least one of readout of communication with a consumer carried token , wherein the device comprisesa first area for at least one of wireless radiofrequency detection or wireless radiofrequency communication;a second area spatially separated from said first area for at least one of wireless optical detection or wireless optical communication;wherein said first area is located above said second area; wherein said top illumination unit comprises', 'at least one essentially vertical translucent skirt with its free edge pointing towards the second area;', 'as well as an opening,', 'said skirt at least partly surrounding said opening;, 'wherein said second area comprises a cavity with at least a front opening for inserting said token by a user, bordered by at least a bottom surface, a backside wall, and a ...

Topographical object detection system

A compact system for producing high contrast and high resolution images of a topographical surface associated with an object. The system utilizes a novel holographic optical element to produce images of topographical surfaces differentiating between ridges and valleys, and providing image details of artifacts. The system of the present invention can be realized in the form of a hand-held instrument for use in in vivo imaging of fingerprint, skin tissue and the like.

Holographic light panels and flat panel display systems and method and apparatus for making same

An illumination panel for illuminating an object, comprising a substrate, a light diffractive grating and a light source. The substrate is made from an optically transparent material having first and second area surfaces disposed substantially parallel to each other and a light input surface for conducting a light beam into the substrate. The light diffractive grating is mounted to the first areal surface and has a slanted fringe structure embodied therein for diffracting the light beam falling incident thereto, along a first diffractive order of the slanted fringe structure. The light source produces a light beam for transmission through the input surface and direct passage through the substrate to the slanted fringe structure so as to produce an output light beam of areal extent that emerges from either the first or second areal surface along the first diffractive order, for use in illuminating an object. A spatial-intensity modulation panel can be mounted to the illumination panel to form a color image display device. In the illustrative embodiments, the light diffractive grating is a volume hologram that is pixelated and spectrally-tuned in order to carry out spectral filtering functions within the color image display device.

Device for forming and detecting fingerprint images with valley and ridge structure

A method and ultra-compact system has been developed for illuminating and detecting the surface topography of an object such as the finger of an individual. The system is capable of producing high-contrast images which can be electronically transmitted in real-time, or stored using electronic or photographic recording devices. Light traveling within a light transmitting substrate is redirected by a slanted-fringe light diffractive grating preferably embodied within a volume hologram. The volume hologram, either of the reflection or transmission type, is attached to the light transmitting substrate, and functions to diffract light striking thereupon and illuminate an object having topographical surface structure. After being spatially and intensity modulated in accordance with topographical details of the illuminated object, the modulated light passes back through the light transmitting substrate and the volume hologram, onto an image detection array, for subsequent analysis. Each of the disclosed embodiments has a compact geometry suitable for use in diverse object identification applications.

Scanning device for barcodes

The invention relates to scanning devices (100; 200) for scanning barcodes (120; 220) that have been applied to documents (110; 210). Said devices comprise a respective reflector assembly (140, 150, 160, 170; 141, 151, 161; 152, 162; 165; 142, 143), which comprises either a variable reflection element (140; 141; 142, 143) or an optical fibre system (250, 251, 252; 253, 255; 254), which is used to deflect or absorb the beam path of electromagnetic radiation that is emitted from a radiation source (130) or an illumination device (230, 231; 232, 233) on the document plane along a line that is essentially perpendicular to the feed direction of the document (110; 210) and to route said radiation to a detector (280). The combination of the feed displacement and the line-by-line scanning of the document (110; 210) along the various measurement tracks achieved by the repeated deflection of the beam path using the variable reflection element (140; 141; 142, 143) and the repeated sequential routing of the scanning beam through the optical fibre system (250, 251, 252; 253, 255; 254) enables the production of cost-effective, compact scanning devices (100; 200), as there is no need for redundant radiation sources (130; 230) and detectors (180; 280).

Optoelectronic device

Die Erfindung betrifft eine optoelektronische Vorrichtung (1) zur Erkennung von mit Kontrastmustern versehenen Marken mit einem Sendelichtstrahlen (3) emittierenden Sender (4), einem Empfangslichtstrahlen (5) empfangenden Empfänger (6), einer Ablenkeinheit, mittels derer die Sendelichtstrahlen (3) periodisch innerhalb eines Überwachungsbereichs (10) geführt sind, und einer Auswerteeinheit zur Auswertung der am Ausgang des Empfängers (6) anstehenden Empfangssignale. Die von den Marken reflektierten Empfangslichtstrahlen (5) sind über die Ablenkeinheit auf den Empfänger (6) geführt, dessen lichtempfindliche Fläche (11) die Sendelichtstrahlen (3) zumindest teilweise umschließt. <IMAGE>

Multi-level, hierarchical radio-frequency communication system

Portable measuring devices which communicate by low power transceivers through a communication controller with a printer device collect weight and size data on articles to be shipped. The collected weight and size data are combined with origin and destination data, and labels are printed bearing pertinent shipping and routing information in machine readable format. The labels are attached to the articles to be shipped and accompany the articles to their respective destinations. At transfer points the labels are read by scanner devices which also communicate by low power transceiver links with the communication controller. The wireless linking of the scanner devices promotes human safety by the absence of cords which could cause entanglement of an operator in mechanized conveying equipment. The communication controllers at each stage of the shipping process have the capability of transferring received and updated status information on the shipped articles to a central data station.

Multilevel data communication system including local and host systems

A computerized system for managing freight or the like which is picked up at various points and delivered to other various destinations, and more particularly to such a system which utilizes hand-held terminals, scanners and printers which are linked together by a micro link radio to each other and by a wide area network radio link to a main area station which can receive and transmit information to a plurality of sets of terminals, printers and the like for managing an overall freight system.

Hand-held compact ergonomic laser scanner with integrated scanner activation or data transmission switch in scanner housing

An ergonomic single-line compact laser bar code scanning system having a compact housing for hand-held disposition at a counter. The scanning system is automatically-activated and includes a bar code symbol reading mechanism contained within a hand-supportable housing having a manually-activatable data transmission switch formed integrally in the housing. During symbol reading operations, the bar code symbol reading mechanism automatically generates a visible laser scanning pattern for repeatedly reading one or more bar code symbols on an object during a bar code symbol reading cycle, and automatically generating a new symbol character data string in response to each bar code symbol read thereby. During system operation, the user visually aligns the visible laser scanning pattern with a particular bar code symbol on an object (e.g., product, bar code menu, etc.) so that the bar code symbol is detected, scanned, and decoded. The user depresses the data transmission switch to produce a data transmission control activation signal and enabling a currently or subsequently produced symbol character data string to be automatically selected and transmitted to a host system.

Apparatus for reading a landscape area of a moving storage medium

Method and apparatus for optically reading target while folding reflected light

在一种用于基于从目标反射回的光而光学读取目标的装置中，设置了具有第一光轴的成像透镜，使所述反射光进入成像透镜。设置了具有有效区域和不同于第一光轴的第二光轴的光电检测器。所述成像透镜将反射光会聚在光电检测器的有效区域上。折叠机构设置在成像透镜和光电检测器之间。所述折叠机构折叠成像透镜和光电检测器之间的反射光的光路，以调节光路的长度，同时保持第一和第二光轴中的每一个恒定。

Optical information reader

Scannable barcode display and methods for using the same

Method and apparatus for optically reading target while folding reflected light

在一种用于基于从目标反射回的光而光学读取目标的装置中，设置了具有第一光轴的成像透镜，使所述反射光进入成像透镜。设置了具有有效区域和不同于第一光轴的第二光轴的光电检测器。所述成像透镜将反射光会聚在光电检测器的有效区域上。折叠机构设置在成像透镜和光电检测器之间。所述折叠机构折叠成像透镜和光电检测器之间的反射光的光路，以调节光路的长度，同时保持第一和第二光轴中的每一个恒定。

Illumination apparatus with polarizing elements for beam shaping

Illumination apparatus includes a light source which directs a polarized source beam in a downstream direction along an optical axis and desirably focuses the beam. A polarization-altering element downstream from the source alters the polarization in a portion or portions of the source beam, so that the altered beam includes portions having different polarization directions. The altered beam passes downstream through a polarization-selective filter. The output beam from the polarization-selective filter can include either portion depending on the orientation of the filter. The arrangement can be used to provide a spot of a given size and shape at the focal location in a scanner such as a bar code scanner. The size and depth of field of the spot can be varied dynamically during operation.

Control systems for adaptive lens

Systems and methods for controlling a fluid lens in a data collection device. One or more micropump control systems are used to control one or more fluid lenses. The micropump control systems are used to change volume and/or pressure within the fluid lens system, changing the radius of curvature of the lens.

Bioptic scanner optical arrangement with single sensor split four ways

A bioptic scanner optical arrangement with a single sensor split four ways is disclosed herein. An example bioptic scanner optical arrangement includes a housing, an imaging assembly having a primary FOV, a decode module, a generally horizontal window supported by the housing, a generally upright window supported by the housing, and a mirror arrangement positioned within the interior region. The mirror arrangement is configured to divide the primary FOV into a plurality of subfields, to redirect at least two of the plurality of subfields through the generally horizontal window, and to redirect at least another two of the plurality of subfields through the generally upright window. The bioptic barcode reader has no other imaging assembly communicatively coupled to the decode module and used to process images for decoding indicia.

Beam shaping for optical scanners

A beam generator, or beam shaping system, for example for use in an optical scanner, creates a non-Gaussian beam which provides improved indicia-reading characteristics. In one embodiment, diffractive optical elements are used to create a Bessel-Gaussian scanning beam, which comprises a coherent combination of a Gaussian beam and a Bessel beam.

DEVICE FOR READING OBLONG SEGMENTS OF A SCROLLING SUPPORT.

DEVICE AND METHOD FOR ELECTRO-OPTICAL READING OF SIGNS

Vehicle data system

A vehicle for transport, fork lift or delivery route operations, for example, includes on-board peripherals which are coupled through a Local Area Network (LAN) into a data system. A LAN data bus provides selective access to the peripherals or data devlces such as, for example, a large area display, a keyboard, a prlnter and a data terminal. The data system controls or provides data on tasks executed by or in connection with the operation of the vehicle. To increase the versatility of the vehicle, the data terminal, multiple data terminals, or any of the other data devices may be removably coupled to the LAN to be operable externally of the vehicle. A mobile mount adapter provides a secure electrical connection of a respective data terminal to the LAN to removably incorporate the data terminal into the data system. The data terminal includes base contact areas which are contacted by spring contacts of the adapter. An "open face" of a disclosed adapter allows a cable for a scanner or other data link to extend from adjacent the base contact areas without a need to remove the extending cable, thereby enabling a cable-connected scanner to be moved and used while the data terminal is disposed in the adapter.

Automatic laser projection scanner with improved laser beam scanning efficiency

Disclosed is an automatic projection laser scanning system for reading bar code symbols. The system supportable on or above a countertop surface, and includes a laser scanning device having a compact housing from which it automatically produces an object detection field of volumetric expanse for automatic detection of objects, and a scan field including at least one scanning plane for automatic laser scanning of the code symbols on detected objects. Both the object detection field and the scan field spatially arranged with respect to each other and the compact housing to facilitate easy scanning of a bar code symbol presented within the scan field after the associated object has been detected within the object detection field, thereby improving the scanning efficiency of the system.

Heated protective window for an optical scanning device

The invention relates to a window for an optical scanning device comprising a panel having a pair of oppositely directed light transmitting surfaces. A heater wire of a diameter less than the width of the smallest permissible indicia of a barcode is embedded between the first and second light transmitting surfaces. The heater wire being entirely contained within the perimeter of the optical scanning device window except for a length of both of its extremities.

Bar code scan and reader

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Bar code reader

在有底窗与边窗的条形码读出装置中使扫描线数增加并优化光学系统配置以减小此装置特别是其纵深尺寸。装置内将激光源，激光分束器、将一束光传到多面镜的反射镜、以旋转方式扫描此入射的激光的多角镜、经上述窗使多角镜反射光射出的反射镜系统、使条形码反射光会聚到探测器的聚光装置均设于同一直线上。相对于一探测器用凹面镜使条形码的反射光折反，而以另一探测器的受光面向下经菲湿耳透镜、反射镜使此及射光射向受光面以缩小装置的纵深。

Scanner with waveguide for scanning paper currency

A light-scanner (200) that includes a wave guide (230). The scanner (200) defines a scanning zone, and further includes a light-emitting diode (214), and a detector. The wave guide (230) is disposed between the light-emitting diode (214) and the scanning zone. The wave guide (230) defines a light-admitting aperture and a light-reflective surface. The light-admitting aperture and light-reflecting surface cooperate to direct light from the light-emitting diode toward the scanning zone, and to focus such light centrally along a path traveled by such light toward the detector.

Holographic laser scanning system having multiple laser scanning stations for producing a 3-D scanning volume substantially free of spatially and temporally coincident scanning planes

A holographic laser scanner of ultra-compact design capable of reading bar and other types of graphical indicia within a large scanning volume using holographic optical elements and visible laser diodes. The holographic optical elements are arranged on the scanning disc in such a manner so that none of the laser scanning planes generated within the 3-D scanning volume of the system are spatially and temporally coincident with any other laser scanning plane within the 3-D scanning volume. This novel feature of the present invention ensures that there is substantially zero cross-talk at the plurality of photodetectors provided within the system, significantly improving the performance of the system.

Method and apparatus for automatically reading bar code symbols

The invention is a method and apparatus for automatically reading bar code symbols. One aspect of the present invention concerns a method of reading bar code symbols using an automatic hand-holdable bar code symbol reading device. In general, the automatic bar code symbol reading device comprises a hand-holdable housing containing operative elements which provide an object detection field and a scan field each defined external to the housing. The method involves automatically detecting the presence of an object within the object detection field by sensing object sensing energy reflected off the object. In a preferred embodiment, the object sensing energy is IR radiation produced from an object sensing energy source disposed within the housing. In automatic response to the detection of the object within the object detection field, the hand-holdable device detects the presence of a bar code within the scan field using a laser beam produced within the housing. Then, in automatic response to the detection of a bar code in the scan field, the automatic hand-holdable bar code symbol reading device reads the detected bar code in the scan field by producing scan data signals from the detected bar code and thereafter collecting and analyzing the same. Another aspect of the present invention concerns a hand-holdable data collection device adapted for use with the automatic bar code symbol reading device to form a portable symbol reading system characterized by versatility and simplicity of use.

For obtaining two planar wave code readers of multiple views of object

光学代码阅读器(80、150、180和210)形成物体(20)上的光学代码的图像。阅读器(80、150、180和210)包括大体相互垂直的第一和第二视表面。该表面限制物体(20)在其中成像的视见体(64)。阅读器(80、150、180和210)还包括一组一个或更多个成像器(60)，其相对于视见体(64)被设置在第一和第二视表面的一个或更多个的相对侧上，并且被取向和被构造成从至少三个不同的视图(62)捕获物体(20)的图像。每个视图(62)通过所述第一和第二视表面中的一个。至少一个所述视图(62)通过第一视表面，并且至少一个所述视图(62)通过第二视表面。阅读器(80、150、180和210)还包括至少一个反射镜(130)，该至少一个反射镜(130)反射至少一个视图(62)。

DEVICE AND METHOD FOR ELECTRO-OPTICAL READING OF SIGNS

L'invention concerne un dispositif et un procédé pour la lecture électro-optique de signes en appliquant une tension à une lentille variable (35) formée de deux liquides (42, 44), au moyen d'électrodes (52, 54), afin de modifier la forme du liquide (42) pour permettre une plus grande profondeur de foyer le long de l'axe optique (46) et, par conséquent, une plus grande plage de travail pour la lecture.Domaine d'application: lecteur de codes à barres, etc. The invention relates to a device and a method for the electro-optical reading of signs by applying a voltage to a variable lens (35) formed of two liquids (42, 44), by means of electrodes (52, 54), in order to to modify the shape of the liquid (42) to allow a greater depth of focus along the optical axis (46) and, consequently, a greater working range for reading. with bars, etc.

Multi-level radio-frequency communication system

2066587 9202084 PCTABS00010 A digital data communication system enables host computer to communicate with a great number of data terminals having specified functions. Communication from the host computer proceeds through a medium or long distance, high power transceiver and through a multiplex system to one of a number of portable communication devices. The communication devices preferably contain internal power supplies, such as rechargeable NiCad battery packs. The devices may be carried on a person's belt, or may be mounted within or on a service vehicle, for example, a forklift truck for use in warehouse operations or a merchandise delivery route vehicle. The communication devices are adapted to function as communication relay devices between the host computer and selected ones of the data terminals. Each communication device includes a first type, low power transceiver to communicate within a first channel and at a low power transmission level with a selected number of the data terminals which also feature such first type transceivers. Each communication device further includes a high power transceiver to communicate within a second channel with the transceiver of the host computer. A microprocessor operated address controller allows the communication device to control low power communication among the data terminals by receiving and re-transmitting locally directed communications. The controller and the controlling protocol further relays data messages between the low power communication level and host computer. In operation the device receives data messages on one of the transceivers and transmits them on the other. The communication device further may contain sufficient memory capacity to permit periodic batch type data transmission between the host computer and the communication device. The ability to switch from a high power, high precision and high cost transmission system to a low power, low precision and low cost transmission system at the level at ...

Spatial light modulator laser dot scanner

A system for scanning objects is disclosed. The system consists of a light source, a spatial light modulator, and appropriate optics for directing the light from the source to the spatial light modulator and to the object to be scanned. Individual elements upon the modulator are activated to reflect those pixels' width of the light to the object. A detector is mounted such as to receive reflections from the object to be processed. The system can be hand-held, mounted into a counter, or used in other applications such as edge detector scanners.

Optoelectronic arrangement for the scanning of code carriers

An optoelectronic arrangement for scanning code carriers, in particular for position transducers, angular position transducers and tachometers as well as optical memories, having at least one code track (15) on the code carrier (14), a light source (10) directed onto the code track, an optoelectronic sensor (8) which measures the influence of the code track on the light of the light source, and a lens (1, 1') arranged between the light source and sensor is to be, in particular, simpler to be installed, entail less outlay on adjustment and furthermore enable scanning of a plurality of code tracks in conjunction with high resolution. For this purpose, the lens is arranged between the code carrier and sensor, and a rod-shaped lens which images the code track with an imaging scale of 1 : 1 into a light-sensitive sensor surface. <IMAGE>

Device and optical element for the aiming and the visual indication of reading area of a coded information reader

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 α with respect to the first face and adapted to deflect the at least one first light beam portion by a predetermined deflection angle β with respect to the optical axis Z. The device is adapted to be mounted on a coded information reader to provide the operator with a visual indication of the reading area framed by the reader, before carrying out the reading of the information contained in the area.

Automated holographic-based tunnel-type laser scanning system for omni-directional scanning of bar code symbols on package surfaces facing any direction or orientation within a three-dimensional scanning volume disposed above a conveyor belt

A fully automated package identification and measuring system, in which an omni-directional laser scanning system are used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.

Scan module

ABSTRACT Methods and apparatus for providing a relatively miniature scan module, for example, a small retroreflective scan engine. An exemplary scan module comprises a chassis, a drive coil, a scan motor, a laser, a mirror module and a sensor. The mirror module can comprise, in an embodiment, a single piece fold/collection mirror module. Additionally, in an embodiment, the scan motor can comprise a molded spring module.

Optical code reader

Laser spot scanner with spatial light modulator

The optical lens used in the lighting system of image scanning instrument

成像扫描仪包括照明光源与混合照明透镜。该混合照明透镜包括面向该照明光源的第一菲涅尔表面以及在其上具有微透镜阵列的第二表面。该第一菲涅尔表面被配置成朝向第二表面引导从照明光源接收到的光，以穿过第二表面上的微透镜阵列朝向目标对象生成照明光。

Bioptical laser scanning system providing 360° of omnidirectional bar code symbol scanning coverage at point of sale station

A bioptical laser scanning system employing a plurality of laser scanning stations about a two independently controlled rotating polygonal mirrors. The system has an ultra-compact construction, ideally suited for space-constrained retail scanning environments, and generates a 3-D omnidirectional laser scanning pattern between the bottom and side-scanning windows during system operation. The laser scanning pattern of the present invention comprises plurality of groups of intersecting laser scanning planes that form a complex omni-directional 3-D laser scanning pattern within a 3-D scanning volume capable of scanning a bar code symbol located on the surface of an object presented within the 3-D scanning volume at any orientation and from any direction at the POS station so as to provide 360° of omnidirectional bar code symbol scanning coverage at the POS station.

Variable focus optical system for data reading

An optical system and method for data reading in which a light source generates an optical beam directed toward an object to be read and a variable aperture mechanism positioned in the outgoing light path establishes at least two separate focal planes. The variable aperture device may comprise a variable aperture system in which the size of the aperture is selectively varied about a range within the diffractive limit of the light beam. A preferred aperture mechanism is an LCD aperture with one or more aperture regions which are selectively or consecutively activated. The optical system therefore establishes two or more separate focal planes from a single light source resulting in greater depth of field or multiple depths of field.

Heated protective window for an optical scanning device

The invention relates to a window for an optical scanning device comprising a panel having a pair of oppositely directed light transmitting surfaces. A PTC heater wire preferably of a diameter less than the width of the smallest permissible indicia of a barcode is used to regulate the temperature of the panel. A conductive layer comprising carbon nanotubes is also provided for regulating the temperature of the device window. A window intrinsically comprising carbon nanotubes is also provided.

Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones

A packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. The network accommodates real time voice transmission both through dedicated, scheduled bandwidth and through a packet-based routing within the confines and constraints of a data network. Conversion and call processing circuitry is also disclosed which enables access devices and personal computers to adapt voice information between analog voice stream and digital voice packet formats as proves necessary. Routing pathways include wireless spanning tree networks, wide area networks, telephone switching networks, internet, etc., in a manner virtually transparent to the user. A voice session and associate call setup simulates that of conventional telephone switching network, providing well-understood functionality common to any mobile, remote or stationary terminal, phone, computer, etc.

Quasi-coaxial optical bar code reader

The present invention provides an inexpensive scanner that can scan at near to medium focal lengths. A light beam is generated to illuminate a target area on the scanned object. A mirrored surface (701) directs the light beam towards the object and light reflected from the object to a detector (702). The detector is positioned to receive a constant amount of reflected light from the mirrored surface.

Optical scanner and printer

An optical system including a scan disc having concave reflectors thereon. As an optical printer, positioned adjacent to the scan disc are a corrector lens, a strip mirror, and a primary mirror. Positioned adjacent to the image plane are a field mirror and a pick-off mirror. Input light is directed onto the scan disc perpendicular to the plane of rotation. When one of the concave reflectors on the rotating scan disc is centered over one end of the strip mirror, the input light is brought to focus and is redirected to the primary mirror by the strip mirror. The primary mirror forms an image of the light spot after passing through the corrector lens. This image is intercepted by a field mirror which forms a final image of the spot. This image is picked out of the incident light beam by a thin pick-off mirror which redirects the light allowing image accessibility. With minor modification the optical system may also function as an optical scanner.

Data capture system with communicating and recharging docking apparatus and hand-held data terminal means cooperable therewith

In an exemplary embodiment, a hand-held data terminal has external electrical contact pads which mate with resilient contacts of a docking receptacle for the interchange of data and the supply of charging current to the terminal. The terminal may be loaded into and removed from the docking receptacle in a single motion with one hand. Keyboard and display of the terminal are fully accessible while in the docking receptacle. The terminal may be fully sealed and be completely free of the conventional pin and socket type electrical connector fittings at its exterior. Electrostatic discharge protection is provided by circuit components connected to the surface contact pads so that the sensitive electronic circuitry of the terminal is protected from electrostatic discharge transients.

System for reading a symbol by activitating a liquid crystal device to control a scanning path

A bar code scanner employs an electronic means for causing the light beam to scan a bar code symbol, rather than using a mechanical device to generate the scan. A linear array of light sources, activated one at a time in a regular sequence, may be imaged upon the bar code symbol to simulate a scanned beam. Instead of a single linear array of light sources, a multiple-line array may be employed, producing multiple scan lines. The multiple scan lines may be activated in sequence, or activated simultaneously (time-division or frequency-division multiplexed. The multiple scan lines can provide signal enhancement, noise reduction or fault correction if directed to the same bar code pattern. Multiple scan lines may be generated using a single light source and a beam splitter, with mechanical scanning, as well as by the sequentially-activated light sources. Multiple simultaneous scan lines may be employed to generate a raster scan at lower mechanical scan frequency. In another embodiment, a tunable laser may be employed to provide a scan without moving parts; a laser beam from the tunable laser is reflected from a diffraction grating that produces an angular deviation dependent upon the wavelength of the laser output. As the frequency of the tunable laser is varied in some selected pattern, the laser beam will scan accordingly.

Method of and apparatus for controlling modulation of digital signals in frequency modulated transmissions

A signal amplitude shaping circuit (31) is interposed between a signal source (32) and a signal input terminal (16) of a frequency modulation circuit of a typical voice radio transmitter or transceiver unit. The amplitude shaping circuit (31) includes a high-impedance sampling circuit (34) which senses the steady state bias voltage at the signal input terminal during periods when no data are being transmitted. Upon receipt of a transmit-enable signal (53), the most recently sensed bias voltage is stored and positive and negative offset voltages (74, 69) are generated with respect to the stored voltage (40). One of the offset voltages (74, 69) is adjusted as a precisely determined voltage with respect to the stored voltage (40). The other of the offset voltages (69) is generated by inverting the first, adjusted voltage, such that the two offset voltages (74, 69) are offset by equal values in opposite directions. An analog switch (46) is adapted to receive a sequence of digital signals and to apply the positive and negative offset voltages (74, 69) to the signal input terminal in a sequence corresponding to the binary signal sequence of the received data signals.

Polygon-based bioptical pos scanning system employing dual independent optics platforms disposed beneath horizontal and vertical scanning windows

A bioptical laser scanning system employing a plurality of laser scanning stations about a two independently controlled rotating polygonal mirrors. The system has an ultra-compact construction, ideally suited for space-constrained retail scanning environments, and generates a 3-D omnidirectional laser scanning pattern between the bottom and side-scanning windows during system operation. The laser scanning pattern of the present invention comprises a complex of quasi-orthogonal laser scanning planes, including a plurality of substantially-vertical laser scanning planes for reading bar code symbols having bar code elements (i.e. ladder type bar code symbols) that are oriented substantially horizontal with respect to the bottom-scanning window, and a plurality of substantially-horizontal laser scanning planes for reading bar code symbols having bar code elements (i.e. picket-fence type bar code symbols) that are oriented substantially vertical with respect to the bottom-scanning window.

Automatically-activated hand-supportable 2-D bar code symbol reading system employing a linear laser scanning pattern generator, an automatic bar code symbol data detector, audible data capture feedback generator, and a manually-activated data transmission activation switch

Disclosed is an automatically-activated wireless code symbol reading system comprising a bar code symbol reading mechanism contained within a hand-supportable housing having a manually-activatable data transmission switch. During symbol reading operations, the bar code symbol reading mechanism automatically generates a visible laser scanning pattern for repeatedly reading one or more bar code symbols on an object during a bar code symbol reading cycle, and automatically generating a new symbol character data string in response to each bar code symbol read thereby. During system operation, the user visually aligns the visible laser scanning pattern with a particular bar code symbol on an object (e.g. product, bar code menu, etc.) so that the bar code symbol is scanned, detected and decoded in a cyclical manner. Each time the scanned bar code symbol is successfully read during a bar code symbol reading cycle, a new bar code symbol character string is produced, while an indicator light on the hand-supportable housing is actively driven. During the bar code symbol reading cycle, the user actuates the data transmission switch producing a data transmission control activation signal and enabling a currently or subsequently produced symbol character data string to be automatically selected and transmitted to the host system. By virtue of the present invention, automatically-activated hand-supportable bar code symbol readers are now able to accurately read, in an unprecedented manner, bar code symbols on bar code menus, consumer products positioned in crowded point-of-sale environments, and other objects requiring automatic identification and/or information access.

Automatic data collection apparatus and method for variable focus using a deformable mirror

An automatic data collection device, such as a scanner-type device, is provided with a deformable mirror that operates in conjunction with a scanning mirror to scan a target machine-readable symbol using a scanning beam. The deformable mirror includes a reflective membrane having a shape that can be changed by applying electric charge to conductors, or by some other type of actuation. In this manner, the focus distance, depth of field, wavefront shape, or other property of the scanning beam can be changed dynamically. Feedback information can be provided to a focus control algorithm to control adjustment of the deformable mirror so as to optimize the scanning.

Optical assembly for controlling beam size in bar code scanners

In order to control the width of the scanning beam in the scanning direction over a significant range in front of the scanner, an optical assembly including a phase mask is utilized through which the beam passes after being configured into curved wavefronts, as by a lens which provides a focus in the vicinity of the far end of the range. The F/ number of the optical assembly is high and the cone of the beam in the scanning direction is small, for example, less than 5°. The mask is preferably transparent and has a region which may be rectangular, elliptical or circular forming a step through which the center of the beam passes which imposes a phase change with respect to the phase of the wavefronts which do not propagate via the region. The phase change may be uniform or in the form of a weak quadratic phase variation in this region of the mask which changes phase and thus slightly refocuses the beam. The transmissivity of the region may also be varied and reduced with respect to the transmissivity of the mask outside of the region. The beam may be scanned via a scanning mirror or by scanning the optical assembly.

Control systems for adaptive lens

Systems and methods for controlling a fluid lens in a data collection device. One or more micropump control systems are used to control one or more fluid lenses. The micropump control systems are used to change volume and/or pressure within the fluid lens system, changing the radius of curvature of the lens.

Patent JPH0576661B2

Omni-directional tunnel-type laser scanning system for scanning bar code symbols on object surfaces facing any direction within a three-dimensional scanning volume disposed above a conveyor belt

A fully automated package identification and measuring system, in which an omni-directional laser scanning systems are used to read bar codes on packages entering the tunnel, while a package dimensioning subsystem is used to capture information about the package prior to entry into the tunnel. Mathematical models are created on a real-time basis for the geometry of the package and the position of the laser scanning beam used to read the bar code symbol thereon. The mathematical models are analyzed to determine if collected and queued package identification data is spatially and/or temporally correlated with package measurement data using vector-based ray-tracing methods, homogeneous transformations, and object-oriented decision logic so as to enable simultaneous tracking of multiple packages being transported through the scanning tunnel.

QUASI COAXIAL OPTICAL BAR CODE READER

Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones

A packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. The network accommodates real time voice transmission both through dedicated, scheduled bandwidth and through a packet-based routing within the confines and constraints of a data network. Conversion and call processing circuitry is also disclosed which enables access devices and personal computers to adapt voice information between analog voice stream and digital voice packet formats as proves necessary. Routing pathways include wireless spanning tree networks, wide area networks, telephone switching networks, internet, etc., in a manner virtually transparent to the user. A voice session and associate call setup simulates that of conventional telephone switching network, providing well-understood functionality common to any mobile, remote or stationary terminal, phone, computer, etc.

Laser scanner

Monitoring light beam position in electro-optical readers and image projectors

一种在光电读取器、图像投影仪等设备中确定光束位置的装置，包括以扫描频率在目标上移动扫描光束作为扫描线的驱动器，以及操作连接到该驱动器的光电反馈组件，用于在光束移动期间光探测扫描线的位置，并且以扫描频率生成反馈信号，该反馈信号可以指示扫描线的位置。去除了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。

Aperture controlled laser beam shaping techniques for scanning optical code

An improved optical system for scanning optical codes is disclosed. A laser beam produced thereby is a diverging, nearly diffraction free beam and may be used to produce an elongated scanning spot. An aperture may be employed such that variation in size of the aperture in one orthogonal dimension varies the size of the scanning spot in another orthogonal dimension.

Optical path design for scanning assembly in compact bar code readers

A compact retro-reflective module for use in electro-optical bar code readers includes components arranged to fold outgoing and incoming light along crossed optical paths. The module is convertible between generating one-dimensional and two-dimensional scan patterns to read bar code symbols.

Methods and apparatus for efficient use of space in arranging and configuring optical components of bar code scanners

Techniques for arrangement of components in a bar code scanner so as to make efficient use of space are described. A scanner includes a single scan window, a laser source for producing a laser beam, a rotating optical spinner to reflect the laser beam to produce a scan beam and a collection of fixed mirrors to reflect the scan beam in order to give it a desired optical length and to direct it out of the scan window. In order to make efficient use of space within the scanner, the spinner comprises a multifaceted hollow reflector, and a collector mirror is placed within a volume bounded by the reflector. The space made available by placement of the collector within the volume bounded by the collector makes it possible to arrange the collection of fixed mirrors such that the scan beam experiences at least three reflections after leaving the spinner.

Method of and apparatus for processing analog scan data signals derived by scanning bar code symbols using a laser beam, wherein a real-time bar code element detector is used to control the detection of zero-crossings occurring in the second derivative of said analog scan data signals

A scan data signal processor is disclosed for use with a laser scanning system having a plurality of different focal zones within which a laser scanning beam is scanned across one or more bar code symbols and an analog scan data signal is automatically produced. The scan data signal processor comprises a first and second derivative signal generation stages, a second-derivative zero-crossing detector, a real-time bar code element detector, and a control logic circuitry. The first derivative signal generation stage derives a first derivative signal from the analog scan data signal. The second derivative signal generation stage derives a second derivative signal from the first derivative signal. The second-derivative zero-crossing detector detects zero crossings in said second derivative signal. The real-time bar code element detector automatically detects the presence and absence of bar code element data encoded within said analog scan data signal. The control logic circuitry automatically activates the second-derivative zero-crossing detector in response to the detection of the presence of bar code element data encoded within said analog scan data signal, and automatically deactivates the second-derivative zero-crossing detector, in response to the detection of the absence of bar code element data encoded within the analog scan data signal. By virtue of the present invention, it is now possible to enable the detection of zero-crossings occurring in the second derivative of the analog scan data signals only when bar code element data has been detected, indicative that a bar code symbol has been scanned. This results in more accurate generation of digital output signals from the scan data signal processor.

Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones

A packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. The network accommodates real time voice transmission both through dedicated, scheduled bandwidth and through a packet-based routing within the confines and constraints of a data network. Conversion and call processing circuitry is also disclosed which enables access devices and personal computers to adapt voice information between analog voice stream and digital voice packet formats as proves necessary. Routing pathways include wireless spanning tree networks, wide area networks, telephone switching networks, internet, etc., in a manner virtually transparent to the user. A voice session and associate call setup simulates that of conventional telephone switching network, providing well-understood functionality common to any mobile, remote or stationary terminal, phone, computer, etc.

System and method employing a piezoelectric reflector for optimizing the focus of a dataform reader

A dataform reader module is provided utilizing a piezoelectric reflector with a reflecting angle that is adjustable to provide for an optimal focus of an image projected onto a photosensor array. A distance measurement device can provide a distance measurement utilized in adjusting the piezoelectric reflector, such that an optimal focus can be made without the use of multiple lenses and/or reflectors. Alternatively, various dataform readings can be performed to find the optimal focus without employing a distance measurement device. Additionally, distance measurements and readings can be performed on segments of the dataform and the dataform reconstructed after all of the readings have been performed.

Scanning device for barcodes

Es werden Abtastvorrichtungen (100; 200) zur Abtastung von auf Dokumenten (110; 210) angebrachten Barcodes (120; 220) vorgeschlagen, die jeweils eine Reflektoranordnung besitzen (140, 150, 160, 170; 141, 151, 161; 152, 162; 165; 142, 143), die entweder ein variables Reflektionselement (140; 141; 142, 143) oder ein Lichtleitersystem (250, 251, 252; 253, 255; 254) umfassen, das dazu dient, den Strahlengang der von einer Strahlenquelle (130) bzw. einer Beleuchtungseinrichtung (230, 231; 232, 233) emittierten elektromagnetischen Strahlung in der Dokumentebene entlang einer zu der Vorschubrichtung des Dokuments (110; 210) im wesentlichen senkrechten Linie auszulenken bzw. aufzunehmen und zu einem Detektor (280) weiterzuleiten. In Kombination mit der Vorschubbewegung ergeben sich dann durch die zeilenweise Abtastung des Dokuments (110; 210) entlang der verschiedenen Meßspuren aufgrund des wiederholten Auslenkens des Strahlengangs mittels des variablen Reflektionselements (140; 141; 142, 143) bzw. des wiederholten sequentiellen Weiterleitens des Abtaststrahls durch die Lichtleiteranordnung (250, 251, 252; 253, 255; 254) preisgünstige und kompakte Abtastvorrichtungen (100; 200), da auf die redundanten Strahlenquellen (130; 230) und Detektoren (180; 280) verzichtet werden kann. Scanning devices (100; 200) are proposed for scanning bar codes (120; 220) attached to documents (110; 210), each having a reflector arrangement (140, 150, 160, 170; 141, 151, 161; 152, 162 ; 165, 142, 143) comprising either a variable reflection element (140; 141; 142, 143) or a light guide system (250, 251, 252; 253, 255; 254) serving to direct the beam path from a radiation source (130) or an illumination device (230, 231; 232, 233) emitted electromagnetic radiation in the document plane along a direction to the feed direction of the document (110; 210) substantially vertical line and / or to forward to a detector (280) , In combination with the advancing movement, line-by-line scanning of the ...

Adjustable imaging lens assembly in imaging reader

An adjustable imaging lens assembly focuses light from indicia along an optical path onto a solid-state imager of an imaging reader. The lens assembly includes a plurality of lenses and an aperture stop spaced apart along the optical path, at least one of lenses being mounted with multiple freedoms of movement relative to the optical path.

Optical reader with combined housing and light pipe

An optical reader is provided which includes a housing which may environmentally protect the optical path between light source and a sensor array to reduce dust and debris interfering with transmission of light. The housing may further provide for alignment of the light path by positioning a focusing axis in alignment with the optical sensor array. The housing further acts as a light pipe to reflect transmitted light from a light source toward a focusing axis where the light may be reflected off of a document containing coded information back through the chamber defined by the housing to an optical sensor array. Point of sale devices incorporating an optical reader are also provided.

The heated protective window that is used for optical scanning device

本发明涉及一种用于光学扫描设备的窗体，该窗体包括带有一对相反朝向的光线传输表面。直径小于条码的最小允许标记的宽度的加热线被嵌入在第一和第二光传输表面之间。除了其两个末端的长度以外，加热线被完全地包容在光学扫描设备窗体的外围内。

Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones

A packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. The network accommodates real time voice transmission both through dedicated, scheduled bandwidth and through a packet-based routing within the confines and constraints of a data network. Conversion and call processing circuitry is also disclosed which enables access devices and personal computers to adapt voice information between analog voice stream and digital voice packet formats as proves necessary. Routing pathways include wireless spanning tree networks, wide area networks, telephone switching networks, internet, etc., in a manner virtually transparent to the user. A voice session and associate call setup simulates that of conventional telephone switching network, providing well-understood functionality common to any mobile, remote or stationary terminal, phone, computer, etc.

Automatically-activated hand-supportable omni-directional laser scanning bar code symbol reader

A multi-mode laser-based bar code symbol reading device having a hand-supportable housing with a light transmission aperture, wherethrough visible light can exit and enter the hand-supportable housing. A laser scanning engine, disposed within the hand-supportable housing, is controlled to selectively operate in either an omni-directional reading mode or a uni~directional bar code reading mode. In the omni-directional bar code reading mode, the laser scanning engine projects pattern through the light transmission aperture, an omni-directional laser scanning pattern producing multiple laser scanning lines with substantially uniform spatial and temporal intensity characteristics at any given scanning plane parallel to the .light transmission aperture within the working distance of the system, and detects and decodes bar code symbols on objects passing through the omni-directional scanning pattern, and produces symbol character data representative of decoded bar code symbols. In the uni-directional bar code reading mode, the laser scanning engine projects through the light transmission aperture, a visible stroboscopically-pulsed omni-directional laser scanning pattern, against a single laser scanning line having substantially uniform spatial and temporal intensity characteristics at any given scanning plane parallel to the light transmission aperture within the working distance of the system, and detects and decodes bar code symbols on objects passing through the single laser scanning line, and produces symbol character data representative of decoded bar code symbols.

Light collection systems in electro-optical readers

An optical scanner for reading indicia of variable light reflectivity, such as bar code symbols, having a light source for producing a light beam for scanning a target; a sensor for collecting the reflected light from the target; and various light collection systems, including a louver formed from an array of thin slats positioned adjacent to the sensor so that light directed along substantially only one angle reaches the sensor, as well as imaging/diffusing optical systems.

Heated protective window for an optical scanner

Automatically-activated hand-supportable laser scanning bar code reading system having data-transmission activation switch

An automatically-activated code symbol reading system (1) comprising a bar code symbol reading mechanism (4) contained within a hand-supportable housing having a manually-activatable data transmission switch (7A). During symbol reading operations, the bar code symbol reading mechanism (4) automatically generates a visible laser scanning pattern (10) for repeatedly reading one or more bar code symbols on an object during a bar code symbol reading cycle, and automatically generating a new symbol character data string in response to each bar code symbol read thereby. During system operation, the user visually aligns the visible laser scanning pattern (3, 10) with a particular bar code symbol on an object (e.g., product, bar code menu, etc.) so that the bar code symbol is scanned, detected and decoded in a cyclical manner. During the bar code symbol reading cycle, the user actuates the data transmission switch (7A) producing a data transmission control activation signal and enabling a currently or subsequently produced symbol character data string to be automatically selected and transmitted to the host system (5).

Integrated scanner on a common substrate having an omnidirectional mirror

An integrated scanner for scanning a barcode omnidirectionally is formed an a common substrate. The scanner may include a mirror assembly or scan module, 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.

Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones

A packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. The network accommodates real time voice transmission both through dedicated, scheduled bandwidth and through a packet-based routing within the confines and constraints of a data network. Conversion and call processing circuitry is also disclosed which enables access devices and personal computers to adapt voice information between analog voice stream and digital voice packet formats as proves necessary. Routing pathways include wireless spanning tree networks, wide area networks, telephone switching networks, internet, etc., in a manner virtually transparent to the user. A voice session and associate call setup simulates that of conventional telephone switching network, providing well-understood functionality common to any mobile, remote or stationary terminal, phone, computer, etc.

Scanning devices and methods using surface emitting laser diodes

A bar code scanning device, system and method that utilizes one or more vertical cavity surface emitting laser diodes for producing at least one laser beam, where the vertical cavity surface emitting laser diodes are disposed on a substrate, and wherein the produced laser beam is substantially an essential single spatial mode laser beam. The bar code scanning device, system and method of present invention also comprise a photodiode attached to the substrate and arranged to receive at least a portion of the beam of light reflected off the scanned bar code or symbol.

Integrated scanner on a common substrate

ABSTRACT 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.

Optical Device for Information Detection Apparatus and Information Detection Apparatus Comprising the Same

본 발명은 특히 원거리에 위치하거나 고속 이송중인 연속된 개체 값의 정보를 검출하는 장치에 사용하기 위한 광학장치와 이러한 정보검출장치에 관한 것으로서, 본 발명에 따른 정보검출장치용 광학장치는 제1 유한광학계를 갖는 발광부 및 수광부를 포함하며 개체에 부여된 코드를 스캔하여 인식할 수 있는 센서부로부터 방출된 광을 시준(視準; collimating)하여 제1 무한광학계로 변환하는 시준광학부; 상기 제1 무한광학계의 광을 반사하여 제2 무한광학계를 형성하는 반사부; 및 상기 제2 무한광학계의 광을 발산(diverge)하는 제2 유한광학계로 변환하는 발산광학부;를 포함하여 구성되며, 상기 반사부 및 발산광학부는 상기 시준광학부에 대하여 상대적으로 이동가능하다. The present invention relates, in particular, to an optical device for use in a device for detecting information of a continuous individual value located at a long distance or at high speed, and to an information detecting device according to the present invention. A collimating optical unit which includes a light emitting unit and a light receiving unit having an optical system, and collimates the light emitted from the sensor unit capable of scanning and recognizing a code applied to an object and converting the collimated light into a first infinite optical system; A reflector reflecting light of the first infinite optical system to form a second infinite optical system; And a diverging optical unit converting the light of the second infinite optical system into a second finite optical system, wherein the reflecting unit and the diverging optical unit are relatively movable with respect to the collimating optical unit.

Method and apparatus for reading and focusing a bar code and data collection and communications module

Method and apparatus for reading and focusing a bar code using a photosensitive array (112B) and determining the rate of intensity change with respect to time and focusing the image according to the output of the photosensitive array. A data collection module (48) comprising a bar code reader and a radio transceiver is also disclosed.

Method and apparatus for reducing specular reflection from a scannable surface

We have discovered that it is possible to create a beam of light that is polarized in a linear fashion from the illuminator. This beam is directed to the bar coded labels (should not be limited to these only) at a relatively low angle of incidence. The beam is reflected toward the sensor (camera) optics. Before reaching the sensor, it passes through a second polarizing filter which blocks the transmission of the direct specular reflection from the label. The sensor only receives the information from the substrate by the diffuse reflection. The concept was developed specifically with the linerless label stock in mind. However, the present invention can be applied to linerless label sales to UPS and possibly other freight carriers, and/or to other types of labels and surfaces for optical scanning.

Light emitting diode scanner

A portable scanning head emits and receives light from a light emitting diode to read symbols, such as bar-code symbols. The optics within the scanner are operative for focusing a light beam and the view of a light sensor in different planes exteriorly of a scanner housing. Imaging means are provided in the unit for imaging a viewing window. The viewing window has an area smaller than that of the scan spot. The system can employ an LED as a light source and tolerate the relatively large-sized (on the order of millimeters) scan spot without sacrificing reading performance since the photodiode "sees" only that portion of the scan spot visible through the viewing window.

Automatically-activated hand-supportable omni-directional laser scanning bar code symbol reader having a user-selectable linear scanning menu-reading mode supported by a stroboscopically-pulsed omni-directional laser scanning pattern for improved bar code symbol navigation and alignment during menu-reading operations

A multi-mode laser-based bar code symbol reading device having a hand-supportable housing with a light transmission aperture, wherethrough visible light can exit and enter the hand-supportable housing. A laser scanning engine, disposed within the hand-supportable housing, is controlled to selectively operate in either an omni-directional reading mode or a uni-directional bar code reading mode. In the omni-directional bar code reading mode, the laser scanning engine projects pattern through the light transmission aperture, an omni-directional laser scanning pattern producing multiple laser scanning lines with substantially uniform spatial and temporal intensity characteristics at any given scanning plane parallel to the light transmission aperture within the working distance of the system, and detects and decodes bar code symbols on objects passing through the omni-directional scanning pattern, and produces symbol character data representative of decoded bar code symbols. In the uni-directional bar code reading mode, the laser scanning engine projects through the light transmission aperture, a visible stroboscopically-pulsed omni-directional laser scanning pattern, against a single laser scanning line having substantially uniform spatial and temporal intensity characteristics at any given scanning plane parallel to the light transmission aperture within the working distance of the system, and detects and decodes bar code symbols on objects passing through the single laser scanning line, and produces symbol character data representative of decoded bar code symbols. A manually-actuatable data transmission switch, integrated with said hand-supportable housing, produces an activation signal in response to the manual-actuation of the data transmission switch. A data transmission subsystem, disposed in the hand-supportable housing, operates under control of control circuitry to communicate the symbol character data produced by the laser scanning engine to a host device ...

Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones

A packet-based, hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. The network accommodates real time voice transmission both through dedicated, scheduled bandwidth and through a packet-based routing within the confines and constraints of a data network. Conversion and call processing circuitry is also disclosed which enables access devices and personal computers to adapt voice information between analog voice stream and digital voice packet formats as proves necessary. Routing pathways include wireless spanning tree networks, wide area networks, telephone switching networks, internet, etc., in a manner virtually transparent to the user. A voice session and associate call setup simulates that of conventional telephone switching network, providing well-understood functionality common to any mobile, remote or stationary terminal, phone, computer, etc.

Body wearable laser scanning system with programmed mode of automatic code symbol reading for consecutively reading bar code symbols without scanner reactivation

A portable automatic code symbol reading system having a laser scanning engine mounted upon the hand of its operator to provide hands-free automatic laser scanning capabilities. The automatic code symbol reading system includes a battery power supply aboard its hand-mounted housing, and a power-conserving control subsystem for conserving the consumption of electrical power during automatic portable laser scanning operations. The control subsystem of the present invention has a plurality of control centers which control the operation of the system components in accordance with preselected system control operations. Each of the control centers is responsive to control activation signals generated by certain of the system components upon the occurrence of predefined conditions. Certain of the control centers are capable of overriding other control centers to provide diverse control capabilities. These control capabilities facilitate execution of intelligent functions and power consumption measures required during automatic, hands-free code symbol reading operations.

Automatically-activated hand-supportable laser scanning bar code symbol reading system with omnidirectional and unidirectional scanning modes in addition to a data transmission activation switch

A hand-supportable bar code symbol reading device having a laser scanning engine that is controlled to selectively operate in either an omni-directional scan mode or a single line scan mode. In the single line scan mode of operation, symbol character data produced by the laser scanning engine is communicated to a host device in response to an activation signal produced by a data transmission switch. In the omni-directional scan mode, symbol character data is communicated to the host device irrespective of the activation signal. Preferably, mode selection means selectively operates the laser scanning engine in either the omni-directional scan mode of operation or the single line scan mode of operation in response to placement of the device in a support stand, thereby enabling automatic operation as a stationary hands-free omni-directional projection scanner (in stand), and automatic operation as a portable hand-held line scanner (out of stand).

Hand-held data capture system with interchangeable modules and interactive control circuits

A battery powered, portable, hand-held data terminal (10) of modular structure includes a base module (16, 136) with a keyboard (18) and a display screen (19) and their respective electrical functions (167, 164). A data and communications module may be selected from a number of different data and communications modules (48, 55, 75, 135) each having different types of data communications transceiver, or including in addition data collection devices, such as shelf label readers or bar code readers (76). The base module (16, 136) includes a microprocessor-controlled data communications and control interface having a predetermined protocol. To adapt the various type of data and communications modules for selection of any one thereof to become attached to the base module and function therewith, each of the data and communications modules includes a microprocessor (125, 144) operable to function as an emulator to interact with the microprocessor of the base module (16, 136).

Micro reader scan engine with prism

A scan engine is disclosed for use in a data collection device, as well as a method for producing a scan engine and an image sensor assembly. The scan engine includes a housing with an opening for receiving light from a scanned dataform, an image sensor which is located within the housing to sense light entering an aperture in the image sensor, and a prism located within the housing for receiving light from the opening along a first path and to provide at least a portion of the received light to the aperture along a second path.

Web-enabled system and method for designing and manufacturing laser scanners

An Internet enabled method and system (1) for designing, and manufacturing laser scanners of modular design and construction (231) using globally based information networks (3), such as the Internet, supporting the World Wide Web (WWW).

Optical adjustment of working range and beam spot size in electro-optical readers

Working range and laser beam cross-section are adjusted in an electro-optical reader for reading indicia by applying control voltages to a pair of variable lenses to change the shape of a liquid therein. An aperture stop maintains a constant beam cross-section as an input to one of the lenses.

Hand-held data capture system with interchangeable modules

ABSTRACT OF THE DISCLOSURE The disclosure relates to battery powered hand-held data entry terminals wherein a peripheral module may contain an automatically operating full image reader and a wireless communication unit. The reader reads at least one full line of indicia and may comprise a laser bar code scanner or a flash type image reader. Preferably the reader has uniform resolution in orthogonal directions in the field of view so that an area image can be read at any arbitrary angular orientation and re-oriented as a stored digital image to a normalized orientation before decoding. The user interface may lie in a first longitudinally extended layer and the peripheral module may lie in a second longitudinally extended adjoining layer. In normal reading disposition of the automatic reader, the user interface may be close to its normal orientation for user interaction therewith to provide for smooth transitions between reading and user interaction operations. A hand grip portion preferably underlies the user interface for comfortable support thereof during manual actuations. The peripheral module and hand grip portion may be used entirely separately from the user interface and may have a wireless link with the user interface. The user interface may comprise a digitizer/display with resolution for accurately digitizing and displaying a person's signature. Signatures may also be digitized via an optical full image reader for immediate verification.