anastigmatic

All modern photographic lenses are close to being anastigmatic.

Systems in which the two astigmatic surfaces coincide are termed anastigmatic or stigmatic.

An Anastigmat or anastigmatic lens is a photographic lens completely corrected for spherical aberration, coma, and astigmatism.

Paul Rudolph (1858-1935) was a German physicist who designed the first anastigmatic lens while working for Carl Zeiss.

In the nineteenth century, opticians dug to the level of the Seidel aberrations, called mathematically the third order aberrations, to reach basic anastigmatic correction.

The well-mannered, short-sighted Roitman peered with gentle eyes through his anastigmatic spectacles and spoke wearily, in a tone of entreaty rather than authority, about plans, plans, plans.

OSLO has been used in a multitude of optical designs including holographic systems, anastigmatic telescopes, gradient index optics, off-axis refractive/diffractive telescopes.

Schneider's inexpensive, classic Xenar asymmetrical, anastigmatic, 4-element, 3-group lens design was introduced in 1919, and is largely unchanged from the original Zeiss Tessar formula.

All modern lenses are anastigmatic; lenses produced in the early days when this was a new feature often had the word Anastigmat in their name: Voigtländer Anastigmat Skopar.

It was named by the UK Antarctic Place-Names Committee in 1960 for Emil von Hoegh (1865-1915), a German mathematical optician who designed the first double anastigmatic camera lens in 1893.

The Seya-Namioka type monochromator contains an anastigmatic concave diffraction grating and line spectra produced using this monochromator do not exhibit the characteristic shoulder on the side of each peak that is caused by the coma-type aberration.

Tracing a single ray through a given lens surface could take more than an hour of painstaking calculations and checks, and a lens designer could not design more than a very few complex, high-performance anastigmatic objectives in an entire lifetime.

It was charted by the French Antarctic Expedition of 1903-05 and was named by Jean-Baptiste Charcot for the Demaria brothers, French developers of an anastigmatic lens used by the expedition's photographic section.