Beam with extended confinement for scanning purposes

Details Beam with extended confinement for scanning purposes Beam with extended confinement for scanning purposes

1993-02-18

1994-05-24

Hajec, Donald

Registers

Coded record sensors

Particular sensor structure

359 19, 359 24, G06K 710

Patent

active

053150953

ABSTRACT:
Scanner optics, usable for example in a bar code reader, generate a multitude of Gaussian beams derived from a common light source to produce a beam with extended working range. In the preferred embodiment, a 360 degree fan of Gaussian beams is generated by passing a laser beam through at least one diffractive element, e.g., computer generated holographic (CGH) plate, computed to perform the transformation of the illuminating beam into the desired output beam. The beam thus produced, having a small diameter over a large longitudinal distance, is useful for long range scanning.

REFERENCES:
patent: 4251798 (1981-02-01), Swartz et al.
patent: 4360798 (1982-11-01), Swartz et al.
patent: 4369361 (1983-01-01), Swartz et al.
patent: 4387297 (1983-06-01), Swartz et al.
patent: 4409470 (1983-10-01), Shepard et al.
patent: 4460120 (1984-07-01), Shepard et al.
patent: 4469407 (1984-09-01), Cowan et al.
patent: 4852973 (1989-08-01), Durnin et al.
patent: 5047625 (1991-09-01), Iima et al.
patent: 5080456 (1992-01-01), Katz et al.
patent: 5164584 (1992-11-01), Wike, Jr. et al.
"Realization of general nondiffracting beams with computer-generated holograms", Antti Vasara, Jari Turunen, and Ari T. Friberg, Journal Optical Society of America, vol. 6, No. 11, Nov. 1989, pp. 1748-1754.
"Diffraction-Free Beans", Durnin et al., Physical Review Letters, No. 15, Apr. 1987, vol. 58, pp. 1499-1501.
"Exact solutions for nondiffracting beams. I. The scalar theory", J. Durnin, Journal Optic Society of America, vol. 4, No. 4, Apr. 1987, pp. 651-654.
"Nondiffracting optical fields: some remarks on their analysis and synthesis," G. Indebetouw, Journal Optic Society of America, vol. 6, No. 1, Jan., 1989, pp. 150-152.

Affiliated with

Also associated with

Rating

Beam with extended confinement for scanning purposes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Beam with extended confinement for scanning purposes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Beam with extended confinement for scanning purposes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1974312