UNISUN BINOCULARS
UNISUN BINOCULARS
binoculars, optical instrument, usually handheld, for providing a magnified stereoscopic view of distant objects. It consists of two similar telescopes, one for each eye, mounted on a single frame.
Binocular eyepieces usually consist of three or more lens elements in two or more groups. The lens furthest from the viewer’s eye is called the field lens or objective lens and that closest to the eye the eye lens or ocular lens. The most common Kellner configuration is that invented in 1849 by Carl Kellner.
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Description
Binocular eyepieces usually consist of three or more lens elements in two or more groups. The lens furthest from the viewer’s eye is called the field lens or objective lens and that closest to the eye the eye lens or ocular lens. The most common Kellner configuration is that invented in 1849 by Carl Kellner.
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