aspherical


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Synonyms for aspherical

varying slightly from a perfectly spherical shape

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References in periodicals archive ?
Early optics experts discovered that using an aspherical lens in the microscope immediately improved performance by eliminating those spherical aberrations, or the loss of image definition.
In this present study we observed the corneal aberrations and visual functions of myopic patients after LASIK guided by aspherical ablation with 4-year followup to explore their long-term stability.
Aquagrip creates a'water envelope,'surrounding the lens for silky comfort, while the aspherical design reduces spherical aberrations, especially in dim light.
The lens unit was realized with HOYA's technology in glass lens molding for aspherical lens, and optical design and manufacturing for compact camera lens unit.
The ACULON A211 uses aspherical eyepiece lenses to minimize aberration and deliver rich, natural colors.
A doctor at San Raffaele Hospital, Milan, Italy, explores the imaging capabilities of schematic eye models for evaluating the spread function formed on the retina for variable pupil sizes, taking into account diffraction and ocular aberrations, and proposes a chromatic aspherical Gullstrand exact (CAGE) eye model for charactering image formation in human eyes.
Optically, the lens comprises of 17 glass elements, which includes four aspherical elements and two ED lenses, to deliver images with superb edge-to-edge sharpness and amazing clarity.
The lens unit consists of 7 elements in 6 groups with 3 aspherical lenses with 5 aspherical surfaces.
The first of these two earlier designs had been the 50m Euro50 Telescope, which was designed around an aspherical primary mirror made from 619 segments.
Aspherical lens doubles the intensity of the received laser reflection.
He not only wants to modify the shape of the camera lens, making it aspherical, but to link together thousands of microcameras behind the main lens too.
The lens combines aspherical lens elements and ED (extra-low dispersion) lens for high optical precision, offering high resolution and minimal chromatic aberration at all settings, from 28mm wide-angle to 560mm super telephoto.
That same engineering goes into our optics," Kortemeier said, who easily explains the merits of SCHOTT flouride ED-glass, aspherical lenses, Quick Close Focus, magnesium construction and more.
This compendium for optical development and production engineers presents the state of the art in optical design and production technology related to aspherical lenses.