Assertion: eyepiece | /r/MadeOf | seven lens elements
Facets:
Source sentences:
text: This eyepiece contains seven lens elements that are cemented into a single doublet, a single triplet, and two individual lenses.
text: Steve says: “Eyepieces contain several lens elements and these are designed using different types of glass to correct chromatic aberration: unwanted false colours, halos and colour fringing.