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Examples of anastigmat lens designs:
Symmetric design by Emil von Höegh (1892) with six elements in two groups; marketed as the Double Anastigmat Goerz, aka Dagor, by Goerz.
Asymmetric Zeiss Biotar double Gauss lens design by Willy Merté [de] (1927), with six elements in four groups.
The controllable aperture stop is typically placed in the middle of the composite lens (between the so-called eye- and field-lenses), and its maximum diameter (the one shown) dictates the minimum F-number for each lens.
An anastigmat or anastigmatic lens is a photographic lens completely corrected for the three main optical aberrations: spherical aberration, coma, and astigmatism. Early lenses often included the word Anastigmat in their name to advertise this new feature (Doppel-Anastigmat, Voigtländer Anastigmat Skopar, etc.).
the word Anastigmat in their name to advertise this new feature (Doppel-Anastigmat, Voigtländer Anastigmat Skopar, etc.). The first Anastigmat was designed...
A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image...
Zeiss Protar (Germany). Paul Rudolph's Protar was the first successful anastigmat (highly corrected [for the era] for all aberrations, including properly...
cemented elements—and was initially named the Leitz Anastigmat. Unlike other triplets, the Leitz Anastigmat has the diaphragm between the first and second...
consists of a 75 cm (30 in)-diameter primary mirror in a three-mirror anastigmat configuration which will capture and redirect light to three different...
conversion system, a polarizing beam splitter, a half-silvered mirror, and an anastigmat, collimating reflector formed on the nose end of the optical assembly...
Kodak Anastigmat f/5.6 50mm in KODEX SHUTTER, or 1938–1949: Kodak Anastigmat Special f/3.5 50mm in KODAMATIC SHUTTER, or 1946–1947: Kodak Anastigmat f/4...
original Schneider Kreuznach triplet (three optical element) design. Kodak Anastigmat Angénieux lenses were also used especially for the French market. Common...
a cemented group at each side of the diaphragm, appropriately named "Anastigmat". This lens was made in three series: Series III, IV and V, with maximum...
2011–2012, featuring a 1.3 m (4.3 ft) diameter unobstructed three-mirror anastigmat telescope. It contained a single instrument, a visible to near-infrared...
was the most widely used for portraits until Carl Zeiss introduced the anastigmat lens in 1889.: 19 Within a decade of being introduced in America, 3 general...
days when this was a new feature often had the word Anastigmat in their name: Voigtländer Anastigmat Skopar. A Tessar comprises four elements in three groups...
payload fairing; when deployed, these segments are part of the three-mirror anastigmat design's primary element and don't serve as fold mirrors in the optical...
of the camera body. The camera came equipped with a 50 mm f/3.5 Cintar anastigmat triplet lens. The lenses were made under contract by Bausch & Lomb, Ilex...
Both an eye-level viewfinder and a waist level viewfinder, Lens: TONE Anastigmat 1:3.5 f=25 mm Focusing dial: 3 ft, 10 ft, infinity Close focusing: about...
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![Examples of anastigmat lens designs: Symmetric design by Emil von Höegh (1892) with six elements in two groups; marketed as the Double Anastigmat Goerz, aka Dagor, by Goerz. Asymmetric Zeiss Biotar double Gauss lens design by Willy Merté [de] (1927), with six elements in four groups. The controllable aperture stop is typically placed in the middle of the composite lens (between the so-called eye- and field-lenses), and its maximum diameter (the one shown) dictates the minimum F-number for each lens.](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3f/Lens_anastigmat.svg/260px-Lens_anastigmat.svg.png)