Dual-aperature barcode scanner with tether-free tower housing

Dual-aperture scanners have a tower that extends above a checkstand. The tower includes elements that may periodically require servicing, such as buttons, speakers, and light emitting diodes. Additionally, this space may be used to contain other serviceable components, such as an electronic article surveillance antenna, a radio frequency identification antenna, and other electronics.

The tower may include a housing that seals the tower. The housing may include one or more pieces, including a bezel portion that frames a vertical window in the tower. The bezel portion may include switches and indicator lights.

It would be desirable to provide a dual-aperture barcode scanner with a tether-free tower housing so that technicians may more easily remove the tower housing to service components within the tower.

A dual-aperture barcode scanner with a tether-free tower housing is provided.

A dual-aperture barcode scanner with tether-free housing. The scanner includes vertical portion including switches and a housing adjacent to but separated from the switches.

FIG. 1 is a block diagram of an example barcode scanner.

FIG. 2 is a perspective view of an example barcode scanner.

FIG. 3 is a perspective view of the example barcode scanner with a tower housing removed.

With reference to FIG. 1 , an example embodiment of optical scanner 10 includes optics engine 14 , pattern mirrors 18 a and 18 b , and power and control circuitry 28 . Optical scanner 10 includes a dual-aperture scanner.

Optical scanner 10 may additionally include scale 36 , electronic article surveillance system 38 , image scanner 40 , and radio frequency identification (RFID) reader 42 .

Optics engine 14 includes lasers 12 a and 12 b , mirrored spinner 16 , collectors 20 a and 20 b , detectors 22 a and 22 b , analog electronics 24 , and motor 26 .

Laser 12 a and 12 b produce laser beams. Each of lasers 12 a and 12 b include one or more lasers. In the example embodiment, each of lasers 12 a and 12 b may include up to two lasers.

Mirrored spinner 16 directs the laser beams to pattern mirrors 18 a and 18 b to produce a scan pattern, and receives reflected light from item 30 from pattern mirrors 18 . Motor 26 rotates mirrored spinner 16 .

Collectors 20 a and 20 b collect the reflected light from mirrored spinner 16 and direct it towards detectors 22 a and 22 b.

Detectors 22 a and 22 b convert the reflected light into electrical signals. In the example embodiment, each of detectors 22 a and 22 b may include up to two detectors.

Analog electronics 24 provides drive circuitry for lasers 12 a and 12 b and motor 26 , and amplifies and filters the electrical signals from detectors 22 a and 22 b.

Pattern mirrors 18 a direct the laser beams from laser 12 a towards bar code label 32 and direct the reflected light to mirrored spinner 16 . Pattern mirrors 18 b direct the laser beams from laser 12 b towards bar code label 32 and direct the reflected light to mirrored spinner 16 .

Power and control circuitry 28 controls operation of scanner 10 and additionally processes the processed electrical signals from analog electronics 24 to obtain information encoded in bar code label 32 . Power and control circuitry 28 may be connected to analog electronics 24 through one or more cables 33 .

Power and control circuitry 28 also records operator selections through switches 44 .

With respect to FIGS. 2-3 , example scanner 10 is illustrated further. Scanner 10 includes a horizontal portion 50 and a vertical portion 52 . Horizontal portion 50 includes window 54 through which scanning light beams pass. Window 54 is in scale weigh plate 56 . Vertical portion 52 includes window 58 through which scanning light beams pass.

Vertical portion 52 further includes housing 60 . An example housing as illustrated includes a main housing portion 62 and a bezel 64 . Bezel 64 includes a switch activation area 66 containing switch indicia 68 for indicating the functions of switches 44 . Switch activation area 66 further includes a window glass needs cleaning icon 70 and apertures 72 through which indicator lights 100 ( FIG. 3 ) are visible.

With reference to FIG. 3 , example scanner 10 is illustrated with housing 60 removed. Main housing portion 62 slides rearward for removal. Bezel 64 slides upward and away from vertical portion 52 . Main housing portion 62 and bezel 64 do not have any electrical connections to vertical portion 52 .

Switches 44 are mounted to printed circuit board 80 . Printed circuit board 80 connects to analog electronics 24 through cable 90 . Printed circuit board 80 may also include backlighting for switch activation area 66 . Analog electronics 24 receives proximity signals from switches 44 and sends corresponding control signals to power and control circuitry 28 . Analog electronics connects to power and control circuitry 28 through cable 92 .

Switches 44 include non-contact proximity sensing switches, without moving parts. Advantageously, switches 44 do not have a wired electrical connection to bezel 64 . Switches 44 may be capacitive switches.

Switch activation area 66 of bezel 64 is mounted adjacent switches 44 . An operator wishing to activate one of switches 44 places a finger on a corresponding switch indicator 68 .

Example switches 44 include a scale zeroing switch 82 , a volume control switch 84 , and a customizable switch 86 .

Also mounted to printed circuit board 80 are indicator lights 100 and 102 . Indicator lights 100 provide a visual indication to an operator that a corresponding switch 82 , 84 , or 86 has been activated.

When analog control circuitry 24 receives proximity signals from switches 82 , 84 , and 86 , analog control circuitry 24 increases the intensity of lights 100 to a bright state. Otherwise, analog control circuitry 24 operates lights 100 in a dim state.

An additional capability has been added to light 100 adjacent to scale-zeroing switch 82 . When scale 36 is stable at a zero weight, light 100 provides operator feedback about the state of switch 82 . However, when scale weight is unstable, light 100 is in an off state. When scale weight is stable and above zero, light 100 is in a dim state. When scale weight is stable and less than zero, light 100 is in a blinking state.

Switch 86 is customizable. For example, switch 86 may be used for manual activation of EAS system 38 . Other capabilities are achievable as the retailer's needs dictate.

Light 102 associated with icon 70 provides a visual indication to the operator that windows 54 , 58 , or both require cleaning.

Although particular reference has been made to certain embodiments, variations and modifications are also envisioned within the spirit and scope of the following claims.