Registers – Coded record sensors – Particular sensor structure
Patent
1996-08-13
1997-03-25
Pitts, Harold
Registers
Coded record sensors
Particular sensor structure
235467, G06F 710
Patent
active
056147066
ABSTRACT:
An optical scanner module, for use in a bar code reader, has an electromagnetic coil across which is disposed a thin flexible strip. Mounted to the center of the strip is an optical element, such as a lightweight mirror, and a magnetic element, such as a permanent magnet. When an AC signal is applied to the electromagnetic coil, a varying magnetic field is produced which interacts with the fixed magnetic field of the magnet causing the magnet and mirror assembly to flex the flexible strip (e.g., in a twisting motion), thereby changing the spatial orientation of the mirror. By suitably driving the electromagnetic coil, the mirror can be made to oscillate, thereby converting a laser beam directed onto the mirror into a scanning laser beam. The entire module is compact, inexpensive to manufacture, and robust. Additional robustness may be provided by incorporating shock-absorber material between the flexible strip and the electromagnetic coil, and protecting the mirror by covering the front surface of the scanner module with a transparent shield.
REFERENCES:
patent: 3532408 (1970-10-01), Dostal
patent: 3978318 (1976-08-01), Romeo et al.
patent: 4187452 (1980-02-01), Knappe et al.
patent: 4264119 (1981-04-01), Minoura et al.
patent: 4268129 (1981-05-01), Araki
patent: 4364000 (1982-12-01), Burke, Jr.
patent: 4421381 (1983-12-01), Ueda et al.
patent: 4502752 (1985-03-01), Montagu
patent: 4685775 (1987-08-01), Goodman et al.
patent: 4714830 (1987-12-01), Usui
patent: 4732440 (1988-03-01), Gadhok
patent: 4766299 (1988-08-01), Tierney et al.
patent: 4902083 (1990-02-01), Wells
patent: 4919500 (1990-04-01), Paulsen
patent: 5118149 (1992-06-01), Emmons
patent: 5170277 (1992-12-01), Bard et al.
patent: 5177631 (1993-01-01), Orlicki
patent: 5185676 (1993-02-01), Nishiberi
patent: 5191197 (1993-03-01), Metlitsky et al.
patent: 5198651 (1993-03-01), Barkan et al.
patent: 5340972 (1994-08-01), Sandor
Bard Simon
Katz Joseph
Metlitsky Boris
Strat Askold
Pitts Harold
Symbol Technologies Inc.
LandOfFree
Bar code scanning assembly with cantilevered or torsionally vibr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bar code scanning assembly with cantilevered or torsionally vibr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bar code scanning assembly with cantilevered or torsionally vibr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2205296