摘要:
An improved button actuation assembly for activating a switch on hand held devices such as portable barcode readers has an improved structure that absorbs and dissipates the force exerted on the button. The improved structure thus protects the switch and the button actuation assembly itself from being damaged by excessive force such as from an impact shock caused by dropping or misuse.
摘要:
A device for providing scanning movement of a light beam in a direction selected from at least one of the X and Y directions with respect to the beam direction, including a generally hollow support having an input aperture and an output aperture; and a scan element including a movable optical element disposed generally within the support, the optical element being adapted to receive through the input aperture an input light beam and to redirect the beam as a scanning output light beam traveling through the output aperture a direction which is generally the same as the input beam direction.
摘要:
Ultra compact scan systems which may be held in the manner of a pen or wand during use and ring mountable scanners suitable for wearing on one's finger, wrist or another part of the body are disclosed. Embodiments of wearable scan systems are disclosed which need not contain traditional light collection apparatus. Highly ergonomic non-mechanical actuation methods are described which eliminate the operation fatigue characteristic of prior art devices that use mechanical levers to turn them on. Novel axial scan elements for the scanners are adapted to operate in a pulsed mode to minimize current consumption. Various scan head embodiments are operated with simple, low cost, low parts count, one-shot circuits to provide low bulk and long battery life even when small button cells are used to power them.
摘要:
A non-contact light beam scan system small enough to fit into a hand holdable wand, pen or calculator size terminal incorporates a novel scan element which can scan at rates of ten to hundreds of scans per second in one or two dimensions. The device is immune to low frequency vibrations and can scan large angles of 60 degrees or more. Automatic trigger circuitry enables it to be used equally well in hand held or fixed mount applications. The depth of operating range is extended with a novel focal system which is integrated with the light source. The entire scanning system for generating a beam, focusing the beam electronically, scanning the beam, collecting light from a target and converting it into electrical signals, and automatically generating a trigger signal can work with industry standard low or high speed bar code decoders.
摘要:
A high speed non-contact beam scanning device sized and shaped to provide the ergonomic benefits of a pen or wand, yet can scan a wide angle moving beam across an information-bearing target in one or two dimensional scan patterns such as lines, rasters or other patterns in order to read information therefrom. The device is well suited for reading one or two dimensional bar-code or other printed matter. In order to achieve the high density optical packaging necessary for its high performance to size benefits the device employs a novel in-line or "axial" gyrating, or "axial" scan element. The axial scan element can accept an input light beam at one end and cause the light beam to emerge from its opposite end as a scanned beam, propagating in the same general forward direction the light beam had upon entering the element. Reflected light, which carries information contained on the target, is collected by an internal non-imaging light collector and is processed by signal processing electronics. All components are integrated into a thin low mass module small enough to fit in a pen. The device is achievable by a cable or by wireless communication.
摘要:
A system and method for scanning a bar code target by continuously varying the focal range of a bar code scanning system. A light source is provided for generating light rays, and a lens is provided for focusing the light rays. The lens has a variable focal length. The focused light rays are scanned across the bar code target with a beam scanner. While the focused light rays are being scanned, the focal length of the lens is continuously varied.
摘要:
A compact beam scanning information readout device and method for reading bar code or other information requires little or no orientation of the information to be scanned by virtue of its raster or omni directional scan capabilities. Only a single mirror is needed to generate two dimensional scans. A wide range of scan speeds are also possible for simple or complex one or two dimensional patterns. Scanning in two dimensions may be done with independent and continuous control of the scan in each dimension. The scan patterns may be electronically controlled to instantly achieve various orientations ranging from a straight line rotated about a point to continuously rotating complex patterns. A light collector, light detector, processor, and means of signal transmission are also included. In one embodiment the device is packaged in a housing resembling a wand or a thin flashlight and in another embodiment the device is packaged in a ceiling mountable housing which will not interfere with counter top work space. The invention is useful wherever beam scanning equipment is used especially for barcode scanning, pattern recognition, general beam positioning, and many other scanning applications.
摘要:
A scan element includes a bobbin having a central axis about which is wound an electromagnetic wire coil and having a flange oriented generally transverse to the central axis. At least one elastomeric support has a first end coupled to the flange. A permanent magnet has first and second surfaces, a central axis, and a magnetization direction oriented generally transverse to the central axis of the permanent magnet. The magnet is supported by a second end of the elastomeric support. A mirror has a central axis and is mounted on the second surface of the magnet. The central axes of the mirror and magnet are coaxial with the central axis of the bobbin. The elastomeric support provides a return force when the magnet and the mirror are rotated at an angle from the central axis during energization of the electromagnetic wire coil.
摘要:
An improved button actuation assembly for activating a switch on hand held devices such as portable barcode readers has an improved structure that absorbs and dissipates the force exerted on the button. The improved structure thus protects the switch and the button actuation assembly itself from being damaged by excessive force such as from an impact shock caused by dropping or misuse.
摘要:
A high speed non-contact beam scanning data acquisition memory card is disclosed. The device possesses the ergonomic benefits of a a card, yet can scan a wide angle moving beam across an information-bearing target in one or two dimensional scan patterns such as lines, rasters or other patterns in order to read information therefrom. The device is well suited for reading one or two dimensional bar-code or other printed matter where great portability as in medical records acquisition is desired. In order to achieve the high density electro-optical packaging necessary for its high performance to size ratio the present device employs a low profile scan module which is turned on by novel methods. Collected information is processed by signal processing electronics and stored in solid state low power memory devices. Novel triggering and scan actuating methods are also disclosed as are novel integrated scanning applications. In one embodiment components are integrated into a thin PCMCIA card or pen type scan device. Communication from the device is achievable by a cable or by wireless means.