公开(公告)号：DE69131062D1

公开(公告)日：1999-05-06

申请号：DE69131062

申请日：1991-06-28

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： METLITSKY BORIS ,  SWARTZ JEROME ,  BARKAN EDWARD ,  SHEPARD HOWARD M ,  GOREN DAVID ,  BIUSO TONY

IPC: G02B26/10 ,  G06K7/10

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.

公开(公告)号：GB2278217B

公开(公告)日：1995-02-15

申请号：GB9411324

申请日：1991-06-06

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： METLITSKY BORIS ,  SWARTZ JEROME ,  BARKAN EDWARD ,  SHEPARD HOWARD ,  GOREN DAVID ,  BIUSO TONY

IPC: G06K7/10 ,  G06K7/01 ,  G06K7/14

公开(公告)号：GB2246653B

公开(公告)日：1995-02-15

申请号：GB9112224

申请日：1991-06-06

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： METLITSKY BORIS ,  SWARTZ JEROME ,  BARKAN EDWARD ,  SHEPARD HOWARD ,  GOREN DAVID ,  BIUSO TONY

IPC: G02B26/10 ,  G06K7/10 ,  G06K7/14

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.

公开(公告)号：GB2278217A

公开(公告)日：1994-11-23

申请号：GB9411324

申请日：1991-06-06

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： METLITSKY BORIS ,  SWARTZ JEROME ,  BARKAN EDWARD ,  SHEPARD HOWARD ,  GOREN DAVID ,  BIUSO TONY

IPC: G06K7/10 ,  G06K7/01 ,  G06K7/14

Abstract: A portable scanning head emits and receives light from a light-emitting diode (10) to read symbols, such as bar-code symbols. The scanner is activated in response to detection (53) of movement of the scanner, e.g. when it is picked up.

公开(公告)号：DE4125899A1

公开(公告)日：1992-02-06

申请号：DE4125899

申请日：1991-08-05

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： METLITSKY BORIS ,  SWARTZ JEROME ,  BARKAN EDWARD ,  SHEPARD HOWARD M ,  GOREN DAVID ,  BIUSO TONY

IPC: G02B26/10 ,  G06K7/10

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.