Element.

1. An individual piece of glass which makes up one component of a camera lens. Camera lenses are nearly always built up of multiple such elements.

2. Chemical elements. The fundamental material which makes up the universe - oxygen (O), carbon (C), silicon (Si), gold (Au), silver (Ag), etc. Elements are substances which cannot be broken down by chemical processes and each are identified by a unique one to three letter chemical symbol.

cf. cemented element, compound lens, group, lens separation, simple lens.

Entry last updated 2002-04-26. Term 415 of 1487.

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