公开(公告)号：DE3279520D1

公开(公告)日：1989-04-13

申请号：DE3279520

申请日：1982-10-18

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： SHAPARD HOWARD M ,  BARKAN EDWARD D ,  SWARTZ JEROME

IPC: G06K7/10 ,  G06K17/00 ,  G11B7/135

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.

公开(公告)号：AT41251T

公开(公告)日：1989-03-15

申请号：AT82305539

申请日：1982-10-18

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： SHAPARD HOWARD M ,  BARKAN EDWARD D ,  SWARTZ JEROME

IPC: G06K7/10 ,  G06K17/00 ,  G11B7/135

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.