OBJECTIVE

Objective

In an optical instrument, the objective is the optical element that gathers light from the object being observed and focuses the light rays to produce a real image. Objectives can be single lenses or mirrors, or combinations of several optical elements. They are used in microscopes, telescopes, cameras, slide projectors, CD players and many other optical instruments. Objectives are also called object lenses, object glasses, or objective glasses.

The above text is a snippet from Wikipedia: Objective (optics)
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objective

Noun

  1. A material object that physically exists.
  2. A goal that is striven for.
  3. The objective case; a noun or pronoun in that case.
  4. The lens or lenses of a camera, microscope, or other optical device closest to the object being examined.

Adjective

  1. Of or relating to a material object, actual existence or reality.
  2. Not influenced by the emotions or prejudices.
  3. Based on observed facts.
  4. Of, or relating to a noun or pronoun used as the object of a verb.


The above text is a snippet from Wiktionary: objective
and as such is available under the Creative Commons Attribution/Share-Alike License.

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