Optical: systems and elements – Diffraction – From zone plate
Patent
1993-02-05
1995-12-19
Lerner, Martin
Optical: systems and elements
Diffraction
From zone plate
359573, 359575, G02B 518, G02B 2744
Patent
active
054773830
ABSTRACT:
A method and apparatus for splitting, scanning and receiving a beam of light is disclosed. Binary optic array components are used to split, in an angular manner, an input beam into multiple beams, traveling in different directions. Miniaturized array element BOCs arranged in "n" different groups are used, wherein n is dependent upon the number of split beams needed or desired. An offset is introduced between the optical axis of each of the corresponding pair of miniaturized BOCs. By varying the offset over time, the resultant beam(s) can be scanned in one, two or three dimensions. Piezo-electric drivers controlled by a processor may be used to move the array in order to vary the offset. The device may also include a collection area to collect the returned scanned beams by using an array of optic components integrated with the scanner. The collected beams are then focused onto detectors.
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Swanson, G. J., "Binary Optics Technology: The Theory and Design of Multi-Level Diffractive Optical Elements," Technical Report 854, Massachusetts Institute of Technology, 14 Aug. 1989, Lexington, Mass., pp. iii to 47.
Ivan N. Cindrich et al., "Holographic Optics: Optically and Computer Generated", Proceedings, SPIE--The International Society for Optical Engineering, vol. 1052, 19-20 Jan. 1989, Los Angeles, California.
APA Optics, Inc.
Lerner Martin
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