Results 281 to 290 of about 290,365 (318)
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Statistical lensing by extended lenses

2008
The 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).
openaire   +2 more sources

The Visby Lenses

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
openaire   +3 more sources

The evolution of lenses

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.
openaire   +3 more sources

CONTACT LENSES

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
openaire   +5 more sources

Smart Contact Lenses for Biosensing Applications

Advanced Intelligent Systems, 2021
Ali Khademhosseini, Dong Wu, Zibin Zheng
exaly  

Contact Lenses for Color Vision Deficiency

Advanced Materials Technologies, 2021
Ahmed E Salih   +2 more
exaly  

Flat Lenses Based on 2D Perovskite Nanosheets

Advanced Materials, 2020
Ziyu Wang, Tieshan Yang, Yupeng Zhang
exaly  

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