Optics and photonics. Preparation of drawings for optical elements and systems - Aspheric surfaces1 Scope This document specifies rules for presentation of aspheric surfaces and surfaces with low order symmetry such as cylinders and toroids in the ISO 10110 series, which standardizes drawing indications for optical elements and systems. It also specifies sign conventions and coordinate systems. This document does not apply to off axis aspheric and discontinuous surfaces such as Fresnel surfaces or gratings. NOTE For off axis aspheric and non

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