SCANNING ASSEMBLY FOR LASER BASED BAR CODE SCANNERS
First Claim
1. A laser scanning assembly for use in a host system, comprising:
- a mirror support element having a first surface and second surface with a first recess and first and second end portions;
a mirror supported on said first surface;
a permanent magnetic element having a first surface, and a second surface with a second recess and first and second end portions;
a flexural element made from flexible material, having a first side with first and second end portions, and a second side with first and second end portions;
a pair of shaft half sections, each having a flat side engaging a central portion of said flexural element, and forming a stationary shaft, about which the rotation is formed;
a shaft support structure for supporting said stationary shaft; and
an electromagnetic coil for generating a magnetic force field in response to an electrical drive current supplied to said electromagnetic coil;
wherein the first and second end portions of the second surface of said mirror support element are fastened to the first and second end portions on the first side of said flexural element;
wherein said first and second end portions on the second side of said flexural element are fastened to the first and second end portions of said permanent magnetic element; and
wherein said first and second recesses accommodate the width of said stationary shaft so that a mirror and permanent magnet subassembly, formed by said mirror support element and said permanent magnetic element, are free to oscillate about said stationary shaft when said electromagnetic coil is driven by a drive circuit and exerts magnetic forces on said permanent magnetic element.
1 Assignment
0 Petitions
Accused Products
Abstract
A laser scanning assembly for use in a host system, including a mirror support element and a permanent magnetic element supported on a flexural element made from flexible material being supported by a pair of shaft half sections forming a stationary shaft, about which an axis of rotation is formed. The mirror support element and the permanent magnetic element have first and second recesses which accommodate the width of the stationary shaft so that a mirror and permanent magnet subassembly, formed by the mirror support element and the magnetic element, is free to oscillate about the stationary shaft when an electromagnetic coil is driven by a drive circuit and generates magnetic forces that act on the permanent magnetic element.
491 Citations
22 Claims
-
1. A laser scanning assembly for use in a host system, comprising:
-
a mirror support element having a first surface and second surface with a first recess and first and second end portions; a mirror supported on said first surface; a permanent magnetic element having a first surface, and a second surface with a second recess and first and second end portions; a flexural element made from flexible material, having a first side with first and second end portions, and a second side with first and second end portions; a pair of shaft half sections, each having a flat side engaging a central portion of said flexural element, and forming a stationary shaft, about which the rotation is formed; a shaft support structure for supporting said stationary shaft; and an electromagnetic coil for generating a magnetic force field in response to an electrical drive current supplied to said electromagnetic coil; wherein the first and second end portions of the second surface of said mirror support element are fastened to the first and second end portions on the first side of said flexural element; wherein said first and second end portions on the second side of said flexural element are fastened to the first and second end portions of said permanent magnetic element; and wherein said first and second recesses accommodate the width of said stationary shaft so that a mirror and permanent magnet subassembly, formed by said mirror support element and said permanent magnetic element, are free to oscillate about said stationary shaft when said electromagnetic coil is driven by a drive circuit and exerts magnetic forces on said permanent magnetic element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A laser scanning assembly for use in a host system, comprising:
-
a mirror support element having a first surface, and second surface with a first recess and first and second end portions; a mirror supported on said first surface; a permanent magnetic element having a first surface and a second surface with a second recess and first and second end portions; a flexural element made from flexible material, having first side with first and second end portions, and a second side with first and second end portions; a pair of shaft half sections, each having a flat side engaging said second end portion of said flexural element, and forming a stationary shaft, about which an axis of rotation is formed; a shaft support structure for supporting said stationary shaft; and an electromagnetic coil for generating a magnetic force field in response to an electrical drive current supplied to said electromagnetic coil; wherein the first end portion of the second surface of said mirror support element is fastened to the first end portion of the first side of said flexural element; wherein said first end portion of the second side of said flexural element is fastened to the first end portion of said permanent magnetic element; and wherein said first and second recesses accommodate the width of said stationary shaft so that a mirror and permanent magnet subassembly, formed by said mirror support element and said permanent magnetic element, is free to oscillate about said stationary shaft when said electromagnetic coil is driven by a drive circuit and exerts magnetic forces on said permanent magnetic element. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22-23. -23. (canceled)
Specification