公开(公告)号：JPH06215174A

公开(公告)日：1994-08-05

申请号：JP25294493

申请日：1993-10-08

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： SHIMON BAADO ,  JIYOSEFU KATSUTSU ,  MIKUROSU SUTAAN ,  YAAJIYAN RII

IPC: G06K7/10 ,  G09C5/00

Abstract: PURPOSE: To reduce the size and weight of a scanning head by constituting an optical reader of an optical scanning head, a separate device and an optical fiber and by providing the separate device with a light emitting element, a photodetector and a signal analysis circuit network. CONSTITUTION: This reader 100 is composed of the scanning head 110 and the separate device 130 connected with each other by the optical fiber 150. In the separate device 130, the light emitting element 133 for generating light beams to be used for scanning optical coded information and the other components are contained. Also, the photodetector 117 is provided inside the scanning head 110 and the photodetector 117 can be installed in the separate device 130 as well. In that case, reflected light is sent back from the scanning head 110 to the photodetector inside the separate device 130 by the optical fiber 150. Further, in a processing circuit net 149 inside the separate device 130, an amplification stage and a digitizer, etc., for processing electric signals from the photodetector 117 and an AC driving signal generator 147 for driving a coil 115 are contained.