: a usually rubber cup at the eyepiece of an optical instrument (such as binoculars) for keeping out extraneous light
Example Sentences
Recent Examples on the WebThe back of the camera also has a vintage-style circular eyecup around the viewfinder. Bryan Hood, Robb Report, 4 July 2021 Like its double-barreled cousin, the Zoom Tube boasts a twist-out eyecup, an oversize eyepiece lens and an easy focusing system. Everett Potter, Forbes, 18 May 2021 The finish and eyecups could use a little more finishing, but the balance is nearly perfect, and its durability and versatility are both very good. Andrew Mckean, Outdoor Life, 6 Dec. 2019 This camera has a full-size HDMI, better ergonomics for waist- and chest-level video shooting, and more options for capture rates and color profiles, plus a convenient electronic viewfinder and roomy eyecup. Tom O'brien, National Geographic, 24 Nov. 2019