Electro-optical scanning system
First Claim
1. Apparatus for producing gyrating motion comprising:
- a frame;
a gyrating member adjacent said frame;
a first resilient suspension, coupled to said frame and coupled to said gyrating member at a first location thereon;
a second resilient suspension, coupled to said frame and coupled to said gyrating member at a second location thereon, said second location and said first location defining an axis of gyration of said gyrating member, said first and second suspensions suspending said gyrating member in an equilibrium position with respect to said frame, said second suspension permitting motion of said gyrating member at said second location in at least one direction perpendicular to said axis of gyration and providing a restoring force on said second location when displaced from its equilibrium position; and
means for applying a force to said gyrating member with respect to said frame to induce gyrating motion of said gyrating member.
6 Assignments
0 Petitions
Accused Products
Abstract
A compact beam scanning information readout device and method for reading bar code or other information requires little or no orientation of the information to be scanned by virtue of its raster or omni directional scan capabilities. Only a single mirror is needed to generate two dimensional scans. A wide range of scan speeds are also possible for simple or complex one or two dimensional patterns. Scanning in two dimensions may be done with independent and continuous control of the scan in each dimension. The scan patterns may be electronically controlled to instantly achieve various orientations ranging from a straight line rotated about a point to continuously rotating complex patterns. A light collector, light detector, processor, and means of signal transmission are also included. In one embodiment the device is packaged in a housing resembling a wand or a thin flashlight and in another embodiment the device is packaged in a ceiling mountable housing which will not interfere with counter top work space. The invention is useful wherever beam scanning equipment is used especially for barcode scanning, pattern recognition, general beam positioning, and many other scanning applications.
68 Citations
62 Claims
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1. Apparatus for producing gyrating motion comprising:
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a frame; a gyrating member adjacent said frame; a first resilient suspension, coupled to said frame and coupled to said gyrating member at a first location thereon; a second resilient suspension, coupled to said frame and coupled to said gyrating member at a second location thereon, said second location and said first location defining an axis of gyration of said gyrating member, said first and second suspensions suspending said gyrating member in an equilibrium position with respect to said frame, said second suspension permitting motion of said gyrating member at said second location in at least one direction perpendicular to said axis of gyration and providing a restoring force on said second location when displaced from its equilibrium position; and means for applying a force to said gyrating member with respect to said frame to induce gyrating motion of said gyrating member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. An electromagnetically operated gyrating scan head comprising:
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a frame; a gyrating member adjacent said frame; a resilient suspension, coupled to said frame and to said gyrating member, said suspension supporting said gyrating member in an equilibrium position with respect to said frame, permitting gyrating motion of said gyrating member from said equilibrium position, said gyrating motion being within a plane perpendicular to an axis of gyration, and applying a restoring force to said gyrating member urging said gyrating member toward its equilibrium position when displaced therefrom; and electromagnetic means for applying a gyrating force to said gyrating member to move said gyrating member from its equilibrium position, said electromagnetic means including a coil having a coil axis which is generally collinear with said axis of gyration and a magnet having a magnetic axis which is generally perpendicular to said axis of gyration. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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Specification