Results 271 to 280 of about 376,107 (295)

A method to fabricate micro lens array with different diameters

2011 6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, 2011
Micro lens arrays are applied to several areas, such as imaging reconstruction and organic light emitting diode light extraction. Researchers have studied on how to increase the efficiency of luminous current and luminous power of an organic light-emitting device (OLED) [1] by using several spheres with different diameters.
Sheng-Yuan Feng, Hsin-Ta Hsieh, Guo-Dung John Su   +2 more
openaire   +1 more source

Pupil diameter changes and reaction after posterior chamber phakic intraocular lens implantation

Journal of Cataract and Refractive Surgery, 2002
To compare the different aspects of pupil constriction before and after the implantation of an implantable contact lens (ICL).Augenabteilung der Schlosspark-Klinik Berlin, Berlin, Germany.This study comprised 15 myopic and 9 hyperopic eyes that were evaluated before and after the implantation of an ICL using a compact integrated pupillograph (CIP ...
Richard J, Keuch, Heinrich, Bleckmann
openaire   +2 more sources

Experimental far-field imaging properties of a ~5-μm diameter spherical lens

Optics Letters, 2013
Microscale lenses are mostly used as near-sighted lenses. The far-field imaging properties of a microscale spherical lens, where the lens is spatially separated from the object, are experimentally studied. Our experimental results show that, for a blu-ray disc (an object) whose spacing is 300 nm, the lens can magnify the stripe patterns of the disc ...
Ran, Ye, Yong-Hong, Ye, Hui Feng, Ma, Jun, Ma, Bin, Wang, Jie, Yao, Shuai, Liu, Lingling, Cao, Huanhuan, Xu, Jia-Yu, Zhang   +9 more
openaire   +2 more sources

Water Flow Conductivity and Pore Diameter in Extended-Wear Gel Lens Materials

Optometry and Vision Science, 1978
The water flow conductivity of 3 high-water-content (70 to 85%) gel materials proposed for extended-wear contact lenses was measured. Pore diameter was calculated from these flow conductivities. High-water-content gels were found to have pore diameters in the range of 20 to 30 A compared with about 8 A for the lower-water-content HEMA gel.
openaire   +2 more sources

Optimisation of magnetic lens with pole-piece of finite inside diameter

Journal of Physics D: Applied Physics, 1982
The relation between the coefficients of spherical and chromatic aberration of round magnetic lenses and the flux distribution over a cylindrical surface that touches the pole-piece at some point is studied. The magnetic flux density distribution over the cylindrical surface is approximated by a polygonal line, and the successive approximation is used ...
openaire   +1 more source

Experience with a Short Diameter Lens

Journal of Cataract and Refractive Surgery, 1988
openaire   +2 more sources

Broadband Dual-Polarized Metal Lens With Theoretically Arbitrarily Variable Focal Diameter Ratio Using 3-D Printing Technology

IEEE Transactions on Antennas and Propagation, 2022
Yang Cheng, Xi Wang, Yuandan Dong
exaly  

Lens diameter and thickness as a function of age and pharmacologically stimulated accommodation in rhesus monkeys

Experimental Eye Research, 2008
Mary Ann Croft
exaly  

Effectiveness of early lens extraction for the treatment of primary angle-closure glaucoma (EAGLE): a randomised controlled trial

Lancet, The, 2016
Augusto Azuara-Blanco, Jennifer Burr, Craig R Ramsay   +2 more
exaly  

Parallax Panoramagrams Made with a Large Diameter Lens

Journal of the Optical Society of America, 1930
openaire   +1 more source