Optical mask, and light source device

Details Optical mask, and light source device Optical mask, and light source device

2011-07-19

2011-07-19

Pinkney, Dawayne A (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S227000, C359S237000

Reexamination Certificate

active

07982938

ABSTRACT:
This optical mask is an optical mask which applies spatial intensity modulation to input light in a beam cross-section and outputs a light after being subjected to the modulation, and when regions A0to Apdefined by circumferences with p radiuses r1to rp(p is an even number, rp>rp−1> . . . >r2>r1, and rp−rp−1>rp−1−rp−2> . . . >r3−r2>r2−r1>r1) around a predetermined position are set in order from an inner side, a region Am(m is an even number not less than 0 and not more than p) is a light transmission region, and a region An(n is an odd number not less than 0 and not more than p) is a light shielding region.

REFERENCES:
patent: 5481393 (1996-01-01), Kashima et al.
patent: 5502001 (1996-03-01), Okamoto
patent: 5969853 (1999-10-01), Takaoka
patent: 6130701 (2000-10-01), Ito
patent: 05-002152 (1993-01-01), None
patent: 06-148573 (1994-05-01), None
patent: 10-058743 (1998-03-01), None
patent: 2003-043347 (2003-02-01), None
J. Arlt et al., “The production of multiringed Laguerre-Gaussian modes by computer-generated holograms,” Journal of Modern Optics, 1998, vol. 45, No. 6, pp. 1231-1237.
D. Grier, “A revolution in optical manipulation,” Nature, Aug. 14, 2003, vol. 424, pp. 810-816.
M. Beijersbergen et al., “Helical-wavefront laser beams produced with a spiral phaseplate,” Optics Communications, 1994, vol. 112, pp. 321-327.
K. Sueda et al., “Laguerre-Gaussian beam generated with a multilevel spiral phase plate for high intensity laser pulses,” Optics Express, Jul. 26, 2004, vol. 12, No. 15, pp. 3548-3553.
N. Heckenberg et al., “Generation of optical phase singularities by computer-generated holograms,” Optics Letters, Feb. 1, 1992, vol. 17, No. 3, pp. 221-223.
N. Heckenberg et al., “Laser beams with phase singularities,” Optical and Quantum Electronics, 1992, vol. 24, No. 9, pp. S951-S962.
M. Martinez-Corral et al., “Reduction of focus size in tightly focused linearly polarized beams,” Applied Physics Letters, Nov. 8, 2004, vol. 85, No. 19, pp. 4319-4321.
R. Dorn et al., “Sharper Focus for a Radially Polarized Light Beam,” Physical Review Letters, Dec. 5, 2003, vol. 91, No. 23, pp. 233901-1 through 233901-4.
S. Quabis et al., “Focusing light to a tighter spot,” Optics Communications, May 25, 2000, vol. 179, pp. 1-7.
Y. Kozawa et al., “Sharper focal spot formed by higher-order radially polarized laser beams,” J. Opt. Soc. Am. A, Jun. 2007, vol. 24, No. 6, pp. 1793-1798.

Affiliated with

Also associated with

Rating

Optical mask, and light source device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical mask, and light source device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical mask, and light source device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2690310