Results 21 to 30 of about 243,834 (314)
Nature inspired design methodology for a wide field of view achromatic metalens [PDF]
Metalenses have become ubiquitous in academic research and have begun to make their transition to industry. However, chromatic aberration still greatly limits the applications of metalenses.
Engelberg Jacob +2 more
doaj +2 more sources
Longitudinal Chromatic Aberration (LCA) influences the optical quality of the eye. However, the reported LCA varies across studies, likely associated to differences in the measurement techniques.
Maria Vinas +4 more
semanticscholar +3 more sources
This paper proposes an optimization algorithm combined with an illustration method to select the three best glass materials for the design of a thickened triplet lens and a correction of the paraxial chromatic aberrations.
Wen-Shing Sun +3 more
doaj +1 more source
Design and Study of a Reflector-Separated Light Dispersion-Compensated 3D Microscopy System
The secondary-phase grating-based tomographic microscopy system, which is widely used in the biological and life sciences, can observe all the sample multilayer image information simultaneously because it has multifocal points.
Hui Li +8 more
doaj +1 more source
First- and third-order chromatic aberrations in Glaser magnetic lens for object magnetic immersion
In this paper, the Gaussian optical properties and the first- and third-order isotropic and anisotropic chromatic aberrations of the Glaser magnetic lens have been derived analytically and then calculated numerically based on two methods: the ...
Aymen Amer, Ahmad K. Ahmad
doaj +1 more source
We performed a detailed comparative study of the parametric high degree (cubic, fourth, and fifth) power phase apodization on compensation defocusing and chromatic aberration in the imaging system.
S. Khonina +5 more
semanticscholar +1 more source
Image processing algorithms for in-field cotton boll detection in natural lighting conditions
In developing countries, the cotton harvesting operation is currently being performed manually. Due to the monotonous nature of this task and the involvement of a considerable amount of labor, this operation becomes very tedious and costly.
Naseeb Singh +4 more
doaj +1 more source
ASSESSMENT OF CHROMATIC ABERRATIONS FOR GOPRO 3 CAMERAS IN UNDERWATER ENVIRONMENTS [PDF]
With underwater photogrammetric mapping becoming more prominent due to the lower costs for waterproof cameras as well as lower costs for underwater platforms, the aim of this research is to investigate chromatic aberration in underwater environments ...
P. Helmholz, D. D. Lichti
doaj +1 more source
INVESTIGATION INTO THE BEHAVIOUR AND MODELLING OF CHROMATIC ABERRATIONS IN NON-METRIC DIGITAL CAMERAS [PDF]
Chromatic aberration in colour digital camera imagery can affect the accuracy of photogrammetric reconstruction. Both longitudinal and transverse chromatic aberrations can be effectively modelled by making separate measurements in each of the blue, green
D. D. Lichti +4 more
doaj +1 more source
Lateral chromatic aberration correction method and lens design feedback for dynamic optical tilt
A method of generating lateral chromatic aberration correction factor (CACF) during lens development is presented. This CACF will be able to feedback to lens designer whether the design will work when tilt Optical Image Stabilization (OIS) compensation ...
Kee Siang Goh +2 more
doaj +1 more source

