Journal ArticleDOI
Axicons and Their Uses
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TLDR
The most common axicon is a flat cone as mentioned in this paper, where a small source of light on the axis of the cone is imaged into a line along a portion of the axis, and the resulting axicon telescope may be used in aligning machinery such as paper mills.Abstract:
The most common axicon is a flat cone. A small source of light on the axis of the cone is imaged into a line along a portion of the axis. In lenses the spot diagram has been useful in evaluating image quality. In axicons a corresponding line diagram where lines take the place of dots is useful. In general, axicon instruments correspond to the usual optical instruments. For example, an axicon may be used as an objective to form a telescope. The resulting axicon telescope may be used in aligning machinery such as paper mills. Similarly, an axicon autocollimator may be used to precisely set mirrors perpendicular to a line. One form of axicon microscope has been tried out for the special purpose of locating the position of shiny surfaces without touching them. A most useful form of optical aligner is the reflection cone axicon. It is used as a straight edge. One example is a reflecting cone of 6 in. diam and maximum range of 40 ft with precision of 5 or 6 wavelengths over the entire range. Another example is a 5 in. diam cone with a range of 10 ft and precisions of about 1 wavelength. In this case the use of a suitable radius for the reflecting surface had the effect of making the image brightness substantially uniform over the 10 ft range. Photo cell pickup has been shown to be successful with very high precisions of setting. This opens the way for automatic machine guiding to very high precisions.read more
Citations
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Journal ArticleDOI
Aberration-free ultrathin flat lenses and axicons at telecom wavelengths based on plasmonic metasurfaces.
Francesco Aieta,Patrice Genevet,Patrice Genevet,Mikhail A. Kats,Nanfang Yu,Romain Blanchard,Zeno Gaburro,Zeno Gaburro,Federico Capasso +8 more
TL;DR: The concept of optical phase discontinuities is applied to the design and demonstration of aberration-free planar lenses and axicons, comprising a phased array of ultrathin subwavelength-spaced optical antennas.
Journal ArticleDOI
Imaging properties of axicon in a scanning optical system
TL;DR: The imaging properties of a scanning optical system that incorporates an axicon are presented and the J(0) pattern produced by a blazed axicon transmittance grating is presented.
Journal ArticleDOI
Linear, annular, and radial focusing with axicons and applications to laser machining
TL;DR: New optical combinations of axicons and axicons with spherical mirrors and lenses suitable for laser machining are presented and potential new laser applications are discussed in relation to these optical devices.
Journal ArticleDOI
Nonparaxial design of generalized axicons
TL;DR: The geometric law of energy conservation is utilized in evaluating the phase transmittance function for axicons with arbitrary distribution of the on-axis intensity.
Book ChapterDOI
Chapter 3 Generation of dark hollow beams and their applications
TL;DR: A light beam with a ring-shaped intensity distribution is a dark hollow beam (DHB) as mentioned in this paper, which is characterized by some practical parameters, such as the dark spot size (DSS), the beam width (W DHB ), the beam radius ( r 0 ), the ringbeam width ( W r ), and the width-radius ratio (WRR).
References
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Journal ArticleDOI
The Axicon: A New Type of Optical Element
TL;DR: The axicon autocollimator as discussed by the authors is a projector which projects a straight line of images into space, and it can be used to determine the perpendicularity of a mirror.