NARROW-BODIED,SINGLE-AND TWIN-WINDOWED,PORTABLE LASER SCANNING HEAD FOR READING BAR CODE SYMBOLS

    公开(公告)号:ZA828040B

    公开(公告)日:1983-08-31

    申请号:ZA828040

    申请日:1982-11-03

    Abstract: A narrow-bodied, single-and twin-windowed, hand-held, laser scanning head for reading bar code symbols includes at least one window mounted at the rear region of the head, and through which either the incident beam going to the symbol and/or the reflected beam returning from the symbol, passes unobstructedly and exteriorly of, and past, the front and intermediate body regions of the head. A field- replaceable laser tube arrangement, a laser tube and method of making the same, an arrangement for and method of controlling a scanning system, optical passive elements for increasing the depth of field, a trigger protective device, and a one-piece support bench and method of fabricating the same by mass-production techniques are also disclosed.

    BAR CODE SCANNING HEAD
    52.
    发明专利

    公开(公告)号:AU1005883A

    公开(公告)日:1983-08-04

    申请号:AU1005883

    申请日:1983-01-05

    Abstract: A narrow-bodied, single-and twin-windowed, hand-held, laser scanning head for reading bar code symbols includes at least one window mounted at the rear region of the head, and through which either the incident beam going to the symbol and/or the reflected beam returning from the symbol, passes unobstructedly and exteriorly of, and past, the front and intermediate body regions of the head. A field- replaceable laser tube arrangement, a laser tube and method of making the same, an arrangement for and method of controlling a scanning system, optical passive elements for increasing the depth of field, a trigger protective device, and a one-piece support bench and method of fabricating the same by mass-production techniques are also disclosed.

    55.
    发明专利
    未知

    公开(公告)号:DE69133454T2

    公开(公告)日:2006-02-23

    申请号:DE69133454

    申请日:1991-04-30

    Abstract: An optical scanner (30) has a scanner component mounted to a leaf spring (34) for oscillatory motion about an axis. An electromagnetic coil (58) and permanent magnet (56) cause a force to be applied to the scanner component away from a central, neutral position. Bending of the leaf spring provides a restoring force biasing the scanner component back towards the neutral position.

    57.
    发明专利
    未知

    公开(公告)号:DE69133454D1

    公开(公告)日:2005-05-19

    申请号:DE69133454

    申请日:1991-04-30

    Abstract: An optical scanner (30) has a scanner component mounted to a leaf spring (34) for oscillatory motion about an axis. An electromagnetic coil (58) and permanent magnet (56) cause a force to be applied to the scanner component away from a central, neutral position. Bending of the leaf spring provides a restoring force biasing the scanner component back towards the neutral position.

    58.
    发明专利
    未知

    公开(公告)号:DE69131062T2

    公开(公告)日:1999-10-28

    申请号:DE69131062

    申请日:1991-06-28

    Abstract: A portable scanning head emits and receives light from a light-emitting diode (10) to read symbols, such as bar-code symbols. The optics (12,18) within the scanner are operative for focusing a light beam (11) and the view of a light sensor (17) in different planes (13,22) 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 (10) as a light source and tolerate the relatively large-sized (on the order of millimeters) scan spot without sacrificing reading performance since the photodiode (17) "sees" only that portion of the scan spot visible through the viewing window.

    59.
    发明专利
    未知

    公开(公告)号:DE69130299T2

    公开(公告)日:1999-05-20

    申请号:DE69130299

    申请日:1991-04-30

    Abstract: An optical scanner (30) has a scanner component mounted to a leaf spring (34) for oscillatory motion about an axis. An electromagnetic coil (58) and permanent magnet (56) cause a force to be applied to the scanner component away from a central, neutral position. Bending of the leaf spring provides a restoring force biasing the scanner component back towards the neutral position.

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