achromat उदाहरण वाक्य

The Barlow lens, a negative achromat magnifier invented by Peter Barlow in 1833, is still sold to increase the eyepiece magnification of amateur telescopes.
The distortion got progressively worse as the field of view increased, which meant the Achromat Landscape could not be used as a wide-angle lens.
Because the Achromat Landscape lens was quite slow, the French Society for the Encouragement of National Industry offered an international prize in 1840 for a faster one.
Each cell has two bending magnets detuned to allow some dispersion in the straights the so-called double-bend achromat structure and thus reduce the overall beam size.
A 20 cm diameter, 18 m focal length achromat in conjunction with a 600 lines / mm grating gives 9 mm / A dispersion in the fifth order of the grating.

An additional advantage of this lattice is that the two long gaps between the focussing and defocussing quadrupoles in the achromat section provide a lot of space for accommodating beam diagnostics and vacuum devices.
In 1891, Thomas Dallmeyer and Adolph Miethe simultaneously attempted to patent new lens designs with nearly identical formulae complete photographic telephoto lenses consisting of a front achromat doublet and rear achromat triplet.
In 1891, Thomas Dallmeyer and Adolph Miethe simultaneously attempted to patent new lens designs with nearly identical formulae complete photographic telephoto lenses consisting of a front achromat doublet and rear achromat triplet.
"Chromatic aberration " is caused by the achromatic doublet ( or " achromat " ) in which two materials with differing dispersion are bonded together to form a single lens.
The ring is not circular, but is shaped as a forty-eight-sided polygon, using a'double bend achromat'magnet configuration in which two bending magnets are placed in each of 24 cells.