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

The Price Six-Three Kodak No. 1A, 2½ × 4¼, Cooke Kodak anastigmat lens, f.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company

The Price     No. 1A2½ × 4¼   No. 33¼ × 4¼ Special Kodak, Zeiss Kodak anastigmat lens, f.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company

For those, however, who wish even greater efficiency and capabilities, we supply the anastigmat lens equipments.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company

And under proper conditions, exposures up to 1/250 second with a Compound shutter and 1/1000 with a focal plane shutter, can be made with the anastigmat.

From Kodaks and Kodak Supplies 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