Understanding Lenses: Aplanats and Achromats - Photonics Aplanatic lenses are designed to produce the minimum focal spot size at a particular wavelength by eliminating coma and spherical aberrations They are usually air-spaced and can have two, three or four lens elements made from one or more glass materials
What do aplanatic optics do? - Celestron Aplanatic optics are designed to eliminate both spherical aberration and coma, two major aberrations (image defects) found in telescopes The end result is sharper images across a much wider field of view than in other designs
Aplanatic lenses revisited: the full landscape - Optica Publishing Group The full scope of solutions for dual-contour aplanatic lenses that can approach the basic limit for radiation transfer are identified, analyzed, and illustrated Complementary solutions are shown to yield lenses that are either monolithic or have two refractive contours separated by an air gap
What do aplanatic optics do? - GigOptix Aplanatic optics, however, are a much-upgraded version of SCT optics They focus on the corrector plate to clear the aberrations The corrections are made from a tiny area closer to the centre of your field of view Aplanatic optics is a valuable asset for astronomers
Aplanatic - Stellar Astronomy To create an aplanatic system, a clever combination of lenses with carefully chosen shapes, materials, and positions is required This intricate design effectively cancels out the unwanted aberrations, producing a sharper, more accurate image
Aplanatic lenses, aplanatic points, and aplanatic conditions The aplanatic lenses (aplanats), which can in some cases be condenser or objective lenses, are free of spherical aberration and off-axial coma simultaneously The images fomred by the aplanatic lenses displays an extremely high contrast
What does aplanatic mean? - Definitions. net Aplanatic refers to a lens, mirror, or optical system that is free from or corrected for spherical and chromatic aberration, thus effectively reducing distortion and presenting a clear and accurate image
Aplanatic points - Ray Optics Simulation Aplanatic points of an optical system are special points on its optical axis, such that "rays proceeding from one of them will all converge to, or seen to diverge from the other point" Ellipse: the two foci of the elliptical lens mirror are aplanatic points, since light emitted from one focus will converge towards the other