Compact optical scanning system

• US 5,115,122 A
• Filed: 12/12/1990
• Issued: 05/19/1992
• Est. Priority Date: 12/12/1990
• Status: Expired due to Term

• Current Assignee: NCR Corporation (NCR Voyix Corporation)
• Original Assignee: NCR Corporation (NCR Voyix Corporation)
• Inventors: Jwo, Chin-Hung, Wu, Paul S.
• Primary Examiner(s): Levy, Stuart S.
• Assistant Examiner(s): Nguyen, Tan
• Application Number:
  US07/626,156
• Time in Patent Office: 524 Days
• Field of Search: 235/462, 235/467, 235/470, 235/472, 350/6.1, 350/6.5, 350/6.7, 350/566, 350/568, 350/567, 359/196, 359/197
• US Class Current: 235/462.4
• CPC Class Codes: G06K 7/10871 randomly oriented data-fields, code-marks therefore, e.g. concentric circles-code

Abstract

A portable, stand-alone compact optical scanning apparatus includes a housing member in which is mounted a printed circuit board, a semicircular mirror member mounted on the printed circuit board having a cone shaped edge portion, a light emitting element mounted on the mirror member for projecting scanning light beams within the housing member, a multifaceted rotating spinner mounted on said printed circuit board extending through said mirror member for directing the light beams at a plurality of pattern forming mirror members which reflect the light beams at the edge portion of the mirror member which in turn reflects the light beams through an aperture in the cover portion of the housing member, the scan pattern scanning a bar code label on a merchandise item positioned on top of the housing adjacent the aperture. A collection system is mounted on the mirror member for generating electrical signals in response to detecting the reflected light beams from the scanned bar code label.

Claims

1. In an optical scanning system, an optical scanning apparatus for reading bar code symbols on objects passing adjacent the scanning apparatus comprising:

a housing member which includes a cover portion having an aperture therein through which scanning light beams are projected and a floor portion;

support means mounted on the floor portion of the housing member;

a semicircular shaped mirror member mounted on said support means for reflecting light beams through the aperture in the form of a scanning pattern;

a source of light beams mounted on said mirror member for directing light beams along a first light path;

scanning means mounted on said support means and extending through said mirror member and into said first light path for cyclically sweeping the light beams along a second light path; and

reflecting means secured to the interior surface of said cover portion and in said second light path for reflecting the light beams along a third light path;

said mirror member including a reflecting portion comprising a cone-shaped edge portion of the mirror member mounted in said third light path for reflecting light beams through said aperture in the cover portion for scanning a bar code label positioned adjacent said aperture.

2. The check out apparatus of claim 1 in which said support means comprises a printed circuit board.

3. The scanning apparatus of claim 2 in which said scanning means further includes a multifaceted mirror member rotatably mounted on said printed circuit board and in said first light path and drive means mounted on said printed circuit board and engaging said multifaceted mirror member for rotating said multifaceted member whereby said multifaceted member will reflect light beams along said second light path.

4. The scanning apparatus of claim 1 in which said mirror member is mounted adjacent the aperture wherein said curved surface will reflect the light beams at an angle to the top surface of the aperture enabling the scan pattern to be formed.

5. The scanning apparatus of claim 1 in which said mirror member includes a circular portion in which is located said curved surface for reflecting the light beams through said aperture.