Bar code scanning and reading apparatus with an oscillating scanning engine

A scan engine for scanning an optical beam over a field of view which contains a data-representing symbol, collecting return light from said symbol, and translating said collected returning light into data-representing electrical signals, said scan engine comprising:

• a stator having controlling means for electrically controlling said scan engine, a pair of magnets for producing a fixed magnetic field, a plurality of electrically-conductive flexures, and a photodetector disposed on said stator;
• and
• a rotor supported by said flexures, said flexures extending between said rotor and said stator on either side of an optic axis, said flexures positioned on a same side of said optic axis being substantially parallel, said rotor adapted to oscillate in response to said controlling means about an axis of rotation which passes through said photodetector, said rotor having a light source to provide said optical beam, an optical collector for collecting light returning from said field of view and for directing said collected returning light to said photodetector, and a coil having opposite sides and mounted on a support so that at least one side of said coil cuts said fixed magnetic field, each of said pair of magnets being disposed on said stator in magnetically coupled relationship with a different one of said opposite sides of said coil, said rotor being a molded interconnect device having conductors thereon to conduct electrical current from said flexures to said light source and to said coil whereby current in said coil is made to alternate, said light source and said optical collector being mounted on said rotor in fixed relationship, said rotor being rotatable to provide said optical beam which scans said field of view.

A scan engine for scanning an optical beam over a field of view which contains a data-representing symbol, collecting return light from said symbol, and translating said collected returning light into data-representing electrical signals, said scan engine comprising:

• a stator having controlling means for electrically controlling said scan engine, a pair of magnets for producing a fixed magnetic field, a plurality of electrically-conductive flexures, and a photodetector disposed on said stator;
• and
• a rotor supported by said flexures, said flexures being connected between said rotor and said stator in a non-crossing arrangement, said rotor adapted to oscillate in response to said controlling means about an axis which passes through said photodetector, said rotor having a light source to provide said optical beam, an optical collector for collecting light returning from said field of view and for directing said collected returning light to said photodetector, and a coil having opposite sides and mounted on a support so that at least one side of said coil cuts said fixed magnetic field, each of said pair of magnets being disposed on said stator in magnetically coupled relationship with a different one of said opposite sides of said coil, said rotor being a molded interconnect device having conductors thereon to conduct electrical current from said flexures to said light source and to said coil whereby current in said coil is made to alternate, said light source and said optical collector being mounted on said rotor in fixed relationship, said rotor being rotatable to provide said optical beam which scans said field of view.

A scan engine for scanning an optical beam over a field of view which contains a data-representing symbol, collecting return light from said symbol, and translating said collected returning light into data-representing electrical signals, said scan engine comprising:

• a stator having controlling means for electrically controlling said scan engine, a pair of magnets for producing a fixed magnetic field, a plurality of electrically-conductive flexures, and a photodetector disposed on said stator;
• and
• a rotor supported by said flexures and adapted to oscillate in response to said controlling means about an axis which passes through said photodetector, said rotor having a light source to provide said optical beam, an optical collector for collecting light returning from said field of view and for directing said collected returning light to said photodetector, and a single coil having opposite sides and mounted on a support so that at least one side of said single coil cuts said fixed magnetic field, each of said pair of magnets being disposed on said stator in magnetically coupled relationship with a different one of said opposite sides of said coil, said rotor being a molded interconnect device having conductors thereon to conduct electrical current from said flexures to said light source and to said single coil whereby current in said single coil is made to alternate, said light source and said optical collector being mounted on said rotor in fixed relationship, said rotor being rotatable to provide said optical beam which scans said field of view.