Results 381 to 390 of about 1,344,549 (424)
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1989
Publisher Summary This chapter derives the paraxial equations of quadrupole systems, and introduces the notion of an orthogonal system. The chapter remarks that although strong focusing at high energy and aberration correction have been the principal stimuli for research on quadrupoles, their properties were very fully explored long before either of ...
Peter Hawkes, Erwin Kasper
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Publisher Summary This chapter derives the paraxial equations of quadrupole systems, and introduces the notion of an orthogonal system. The chapter remarks that although strong focusing at high energy and aberration correction have been the principal stimuli for research on quadrupoles, their properties were very fully explored long before either of ...
Peter Hawkes, Erwin Kasper
openaire +5 more sources
Super-Dispersive Off-Axis Meta-Lenses for Compact High Resolution Spectroscopy.
Nano letters (Print), 2016Metasurfaces have opened a new frontier in the miniaturization of optical technology by allowing exceptional control over the wavefront. Here, we demonstrate off-axis meta-lenses that simultaneously focus and disperse light of different wavelengths with ...
M. Khorasaninejad +3 more
semanticscholar +1 more source
Statistical lensing by extended lenses
2008The purpose of the work underlying this contribution was to study the propagation of light through a universe filled with galaxies, which in turn consist of stars, thereby combining the work of Refsdal (1970) and Schneider & Weiss (1988) with that of Kayser & Refsdal (1988) and Jaroszynski (1989).
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Plasmonic Lattice Lenses for Multiwavelength Achromatic Focusing.
ACS Nano, 2016This paper describes an evolutionary approach to design flat multiwavelength achromatic lenses based on subwavelength plasmonic nanoparticles. Our lattice evolution algorithm achieved desired optical responses by tuning the arrangement of the phase units
Jingtian Hu +4 more
semanticscholar +1 more source
Optometry and Vision Science, 1999
In this study, 10 lens-shaped rock crystals, manufactured not later than the early Middle Ages, have been examined with respect to their image-forming qualities.The spherical aberration of the lenses served as a scale for comparison. Measurements have been taken with a specially designed light section method.
Olaf Schmidt +2 more
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In this study, 10 lens-shaped rock crystals, manufactured not later than the early Middle Ages, have been examined with respect to their image-forming qualities.The spherical aberration of the lenses served as a scale for comparison. Measurements have been taken with a specially designed light section method.
Olaf Schmidt +2 more
openaire +3 more sources
The Lenses of Gender: Transforming the Debate on Sexual Inequality
, 1993Part 1 Introduction and overview. Part 2 Biological essentialism: the Biological Politics of the Late-l9th and Early 20th Centuries The Modern Period I - Just-So Stories of Socio-Biology The Modern Period II - Prenatal Hormone Theory An Alternative ...
S. Bem
semanticscholar +1 more source
Ophthalmic and Physiological Optics, 2012
AbstractStructures which bend light and so form images are present in all the major phyla. Lenses with a graded refractive index, and hence reduced spherical aberration, evolved in the vertebrates, arthropods, annelid worms, and several times in the molluscs. Even cubozoan jellyfish have lens eyes.
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AbstractStructures which bend light and so form images are present in all the major phyla. Lenses with a graded refractive index, and hence reduced spherical aberration, evolved in the vertebrates, arthropods, annelid worms, and several times in the molluscs. Even cubozoan jellyfish have lens eyes.
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1967
Publisher Summary The contact lens is so called because it is in contact with the eye in just the same way as a denture is in contact with the mouth. There are two types of contact lenses: corneoscleral lenses and microcorneal lenses. Corneoscleral lenses are in contact with both the corneal and scleral surfaces of the eye.
J.L.C. MARTIN-DOYLE, MARTIN H. KEMP
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Publisher Summary The contact lens is so called because it is in contact with the eye in just the same way as a denture is in contact with the mouth. There are two types of contact lenses: corneoscleral lenses and microcorneal lenses. Corneoscleral lenses are in contact with both the corneal and scleral surfaces of the eye.
J.L.C. MARTIN-DOYLE, MARTIN H. KEMP
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Continuous optical zoom microscopy imaging system based on liquid lenses
Optics Express, 2021Qiong-hua Wang, Chao Liu
exaly