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Definition of roof prism in English: roof prismnoun 1A reflecting prism in which the reflecting surface is in two parts that are angled like the two sides of a pitched roof. Compare with Porro prism Example sentencesExamples - Modern roof prism designs are capable of performance just as good as a comparable porro prism design, due to current technology such as phase coating and improved reflective backing materials on the prisms.
- 1.1roof prisms" or "roof-prism binoculars A pair of binoculars using two roof prisms, resulting in an instrument with parallel sides and objective lenses that are the same distance apart as the eyepieces.
Example sentencesExamples - Focusing is similar to a traditional roof prism binocular with the right ocular adjustable and a center focus knob.
- Zeiss pioneered many products and technologies we take for granted, such as roof-prism binoculars and anti-reflective lens coatings.
Definition of roof prism in US English: roof prismnoun 1A reflecting prism in which the reflecting surface is in two parts that are angled like the two sides of a pitched roof. Compare with porro prism Example sentencesExamples - Modern roof prism designs are capable of performance just as good as a comparable porro prism design, due to current technology such as phase coating and improved reflective backing materials on the prisms.
- 1.1roof prisms" or "roof-prism binoculars A pair of binoculars using two roof prisms, resulting in an instrument with parallel sides and objective lenses that are the same distance apart as the eyepieces.
Example sentencesExamples - Zeiss pioneered many products and technologies we take for granted, such as roof-prism binoculars and anti-reflective lens coatings.
- Focusing is similar to a traditional roof prism binocular with the right ocular adjustable and a center focus knob.
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