angular field

noun
variants: or angular field of view

Definition of angular field 

: angle of view A type of wide-angle lens that has an angular field above 140 degrees and exhibits barrel distortion along its edges …The Optical Industry & System Directory, 23rd Edition, 1977 It is a full-size binocular with a large knurled center focus knob for smooth and accurate focusing. Its lenses are fully coated and have angular field of view of 3.7 degrees.Businessworld, 11 Feb. 2011

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First Known Use of angular field

1847, in the meaning defined above

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