anastigmat

American  

[uh-nas-tig-mat, an-uh-stig-mat] / əˈnæs tɪgˌmæt, ˌæn əˈstɪg mæt /

noun

Optics.

1. a compound lens corrected for the aberrations of astigmatism and curvature of field.

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anastigmat British  

/ æˈnæstɪɡˌmæt, ˌænəˈstɪɡmæt /

noun

1. a lens or system of lenses designed to be free of astigmatism

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Etymology

Origin of anastigmat

1885–90; < German, back formation from anastigmatisch anastigmatic

Example Sentences

This is an advantage which will appeal strongly to many, as it enables one to utilize to the fullest extent the microscopic definition of his anastigmat lens.

From Premo Cameras 1914 by Canadian Kodak Company

The Six-Three Premos are designed to supply absolutely reliable cameras with every anastigmat advantage, at the very minimum of expense.

From Premo Cameras 1914 by Canadian Kodak Company

This larger opening admits more light within a given time than that of the R. R. lens, hence the anastigmat is much faster.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company

Both cameras offer the usual Kodak simplicity, and the exceptional lens and shutter equipment which assures the user the maximum of efficiency in all work where an anastigmat equipment is not necessary.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company

The superiority of the anastigmat lens, without attempting to go into the technicalities of the subject, consists of—Perfect definition over the whole negative, absolute flatness of field, and higher speed.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company