Optical: systems and elements – Diffraction – From zone plate
Patent
1991-11-04
1993-11-16
Lerner, Martin
Optical: systems and elements
Diffraction
From zone plate
359568, 430321, G02B 518, G02B 2744
Patent
active
052628930
ABSTRACT:
Method and apparatus for creating discrete phase optical elements. An arbitrary phase structure is represented by color encoding to produce a color encoded mask. Thereafter, a photo-sensitive substrate is exposed to broad spectrum light transmitted through or reflected from the mask to create the discrete phase structure in the substrate. In preferred embodiments, the exposed substrate is developed and bleached (if necessary) to remove pigmentation to produce highly efficient multiple level phase structures for optical applications. The color encoded mask is produced by a computer-driven color printer resulting in very fast turnaround times.
REFERENCES:
patent: 3378633 (1968-04-01), Macovski
patent: 3488118 (1970-01-01), Parrent, Jr. et al.
patent: 3572900 (1971-03-01), Bouche
patent: 3586434 (1971-06-01), Mueller
patent: 3609010 (1971-09-01), Mueller
patent: 3647943 (1972-03-01), Marshall
patent: 3702725 (1972-11-01), Macovski
patent: 3715461 (1973-02-01), Hanlon
patent: 3947105 (1976-03-01), Smith
Jahns et al, "Multilevel Phase Structures for Array Generation," SPIE vol. 1052: Holographic Optics: Optically and Computer Generated, 1989, pp. 198 to 203.
Swanson, "Binary Optics Technology: The Theory and Design of Multi-Level Diffractive Optical Elements," MIT Lincoln Lab. Technical Report 854, 1989, pp. iii to 47.
Mokry, "Unique Applications of Computer-Generated Diffractive Optical Elements," SPIE vol. 1052: Holographic Optics: Optically and Computer Generated, 1989, pp. 163 to 171.
Tricoles, "Computer Generated Holograms: A Historical Review," Applied Optics, vol. 26, No. 20, 15 Oct. 1987, pp. 4351 to 4360.
Anastasi et al, "Evaluation of Coding Schemes for Dedicated Beam Shaping CGH," IERE Conference Holographic Systems, Components and Applications, 1987, pp. 81 to 85.
Lindvold et al, "Computer-Generated Holographic Optical Elements with Grey-Level Modulation," Journal of Physics D, 22, pp. 735-740, 1989.
Hariharan et al, "Simplified Processing Technique for Photographic Phase Holograms," Optics Communications, vol. 3, No. 4, Jun. 1971, pp. 246 to 247.
Rastani et al, "Binary Phase Fresnel Lenses for Generation of Two-Dimensional Beam Arrays", Applied Optics, vol. 30, No. 11, 10 Apr. 1991, pp. 1347 to 1354.
Tai et al, "White-Light Pseudocolor Density Encoder," Optics Letters, vol. 3, No. 5, Nov. 1978, pp. 190 to 192.
Shrauger Vernon E.
Warde Cardinal
Lerner Martin
Massachusetts Institute of Technology
LandOfFree
Method and apparatus for creating multiple phase level optical e does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for creating multiple phase level optical e, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for creating multiple phase level optical e will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-25723