中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

7 records (took 0.019 seconds)

    OPTICAL SYSTEM FOR LASER LIGHT BEAM
    1.
    发明专利
    OPTICAL SYSTEM FOR LASER LIGHT BEAM 失效

    公开(公告)号：JPH03182979A

    公开(公告)日：1991-08-08

    申请号：JP33686690

    申请日：1990-11-30

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： JIEROOMU SUWAATSU ,  HAWAADO EMU SHIEPAADO ,  ERITSUKU EFU BAAKAN ,  MAAKU JIEI KURICHIBAA ,  BORISU METORITOSUKII ,  EDOWAADO BAAKAN ,  AREKISANDAA EMU ADERUSON

    IPC: G02B26/10 ,  G06K7/00 ,  G06K7/10 ,  G11B7/12 ,  G11B7/135 ,  H01S5/00 ,  H04N1/028 ,  H04N1/107 ,  H04N1/113

    Abstract: PURPOSE: To increase the focal depth as much as possible and to reduce the beam size in the focus position as much as possible by providing an optical means with a converging means and an aperture diaphragm which is arranged between a laser light source and a symbol part and closely to the converging means in the optical path. CONSTITUTION: An aperture diaphragm 56 which directly determines the beam size is arranged in the optical path of emission of laser light. The cross section of the aperture diaphragm is smaller than that of laser light in the position of the aperture diaphragm and is so constituted that a part of laser light from a laser light source 42 passes through but the other part is intercepted, and the optical system includes a converging lens 62 consisting of a piano-convex lens and the aperture diaphragm 56 which is arranged in the optical path closely to the converging lens 62. A part of the emitted laser diode beam is allowed to reach a symbol through this aperture diaphragm 56. Thus, convergence to a desired beam size is realized for a sufficient operation time by the simple constitution of the single lens.

    OPTICAL READER FOR SYMBOL
    2.
    发明专利
    OPTICAL READER FOR SYMBOL 失效

    公开(公告)号：JPH03179580A

    公开(公告)日：1991-08-05

    申请号：JP33686890

    申请日：1990-11-30

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： JIEROOMU SUWAATSU ,  HAWAADO EMU SHIEPAADO ,  ERITSUKU EFU BAAKAN ,  MAAKU JIEI KURICHIBAA ,  BORISU METORITOSUKII ,  EDOWAADO BAAKAN ,  AREKISANDAA EMU ADERUSON

    IPC: G02B26/10 ,  G06K7/00 ,  G06K7/10 ,  G11B7/12 ,  G11B7/135 ,  H01S5/00 ,  H04N1/028 ,  H04N1/107 ,  H04N1/113

    Abstract: PURPOSE: To miniaturize a light condensing means and to mini-aturize also the housing of a device by moving a visual field scanning means together with a scanning mirror to oscillate the read visual field in the scanning direction synchronously with scanning of read light. CONSTITUTION: A scanning mirror 66 is attached onto a scanning means like a high-speed scanning. motor 70. The motor 70 has an output shaft 72 fixedly supporting a supporting bracket 74, and the mirror 66 is fixed onto this bracket 74. The motor 70 oscillates and rotates the shaft 72 back and forth within a desired angular range. A feedback part of reflected laser light is condensed by a spherical condenser mirror 76 to form a convergent beam in a conical condensing optical path. The mirror 76 reflects the conical convergent light into a head along an optical path 116, and this light passes a laser transmission element 78 along a second optical path and is made incident on a sensor means like a photo sensor 80. The sensor 80 is extended along the linear scanning range and detects the variable intensity of laser light condensed through a field of view beyond this range, thus generating an electric analog signal.

    ELECTRO-OPTICAL SIGN READER
    6.
    发明专利
    ELECTRO-OPTICAL SIGN READER 失效

    公开(公告)号：JPH03179579A

    公开(公告)日：1991-08-05

    申请号：JP33686790

    申请日：1990-11-30

    Applicant: SYMBOL TECHNOLOGIES INC

    Inventor： JIEROOMU SUWAATSU ,  HAWAADO EMU SHIEPAADO ,  ERITSUKU EFU BAAKAN ,  MAAKU JIEI KURICHIBAA ,  BORISU METORITOSUKII ,  EDOWAADO BAAKAN ,  AREKISANDAA EMU ADERUSON

    IPC: G02B26/10 ,  G06K7/00 ,  G06K7/10 ,  G11B7/12 ,  G11B7/135 ,  H01S5/00 ,  H04N1/028 ,  H04N1/107 ,  H04N1/113

    Abstract: PURPOSE: To realize a symbol reader which can be connected to an external system by properly interchangeably attaching plural housing parts to a first housing part where a light source, optical means, and sensor means are arranged. CONSTITUTION: One of elements in a head 10 is an active laser light source consisting of, for example, a semiconductor laser diode 42. A laser beam passes an aperture stop 56 and goes backward along an optical axis 102 in the head 10 and is made incident on a practically flat scanning mirror 66 and is reflected by this mirror. The mirror 66 energized by a trigger 32 is repeatedly moved back and forth or oscillatorily and linearly sweeps so that the laser beam traverses all of bars consisting of a symbol. A feedback part of the reflected laser beam is condensed by a concave condenser mirror 76 to form a convergent beam in a conical condensing optical path. The mirror 76 reflects the conical convergent light into the head 10 along an optical path 116 and passes a laser transmission element 78 along a second optical path and is made incident on a sensor means like a photo sensor 80, thus generating an electric analog signal.

Patent Agency Ranking