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1. US6490088 - Optical system using a radial harmonic pupil filter for generating collimated beams

Office
United States of America
Application Number 08592556
Application Date 26.01.1996
Publication Number 6490088
Publication Date 03.12.2002
Grant Number 6490088
Grant Date 03.12.2002
Publication Kind B1
IPC
G02B 5/18
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
18Diffracting gratings
G02B 27/42
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/-G02B26/119
42Diffraction optics
G02B 5/32
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
32Holograms used as optical elements
G02B 27/46
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/-G02B26/119
42Diffraction optics
46Systems using spatial filters
G21K 1/00
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
KTECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
1Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
G21K 1/06
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
KTECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
1Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
06using diffraction, refraction, or reflection, e.g. monochromators
CPC
G21K 1/06
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
KTECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
1Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
06using diffraction, refraction or reflection, e.g. monochromators
G02B 5/32
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
32Holograms used as optical elements
G02B 27/46
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
42Diffraction optics ; , i.e. systems including a diffractive element being designed for providing a diffractive effect
46Systems using spatial filters
Applicants California Institute of Technology
Inventors Rosen, Joseph
Yariv, Amnon
Salik, Boaz
Priority Data 08592556 26.01.1996 US
Title
(EN) Optical system using a radial harmonic pupil filter for generating collimated beams
Abstract
(EN)

A Fourier hologram with the distribution of a radial harmonic function creates, in the far field, a pseudo non-diffracting beam. The properties of this pseudo non-diffracting beam can be set by appropriate characterization of the radial harmonic function. Various operations can also be carried out to change the position of the beam relative to the focal point. The beam can be shifted in space, twisted, or tilted.

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