Objective-lens

noun, Optics.
1.
(def 3).
[uh b-jek-tiv] /əbˈdʒɛk tɪv/
noun
1.
something that one’s efforts or actions are intended to attain or accomplish; purpose; goal; target:
the objective of a military attack; the objective of a fund-raising drive.
2.
Grammar.

3.
Also called object glass, object lens, objective lens. Optics. (in a telescope, microscope, camera, or other optical system) the lens or combination of lenses that first receives the rays from the object and forms the image in the focal plane of the eyepiece, as in a microscope, or on a plate or screen, as in a camera.
adjective
4.
being the object or goal of one’s efforts or actions.
5.
not influenced by personal feelings, interpretations, or prejudice; based on facts; unbiased:
an objective opinion.
6.
intent upon or dealing with things external to the mind rather than with thoughts or feelings, as a person or a book.
7.
being the object of perception or thought; belonging to the object of thought rather than to the thinking subject (opposed to ).
8.
of or relating to something that can be known, or to something that is an object or a part of an object; existing independent of thought or an observer as part of reality.
9.
Grammar.

10.
being part of or pertaining to an object to be drawn:
an objective plane.
11.
Medicine/Medical. (of a symptom) discernible to others as well as the patient.
/əbˈdʒɛktɪv/
adjective
1.
existing independently of perception or an individual’s conceptions: are there objective moral values?
2.
undistorted by emotion or personal bias
3.
of or relating to actual and external phenomena as opposed to thoughts, feelings, etc
4.
(med) (of disease symptoms) perceptible to persons other than the individual affected
5.
(grammar) denoting a case of nouns and pronouns, esp in languages having only two cases, that is used to identify the direct object of a finite verb or preposition and for various other purposes. In English the objective case of pronouns is also used in many elliptical constructions (as in Poor me! Who, him?), as the subject of a gerund (as in It was me helping him), informally as a predicate complement (as in It’s me), and in nonstandard use as part of a compound subject (as in John, Larry, and me went fishing) See also accusative
6.
of, or relating to a goal or aim
noun
7.
the object of one’s endeavours; goal; aim
8.
(military) Also called objective point. a place or position towards which forces are directed
9.
an actual phenomenon; reality
10.
(grammar)

11.
(optics) Also called object glass

adj.

1610s, originally in the philosophical sense of “considered in relation to its object” (opposite of subjective), formed on pattern of Medieval Latin objectivus, from objectum “object” (see object (n.)) + -ive. Meaning “impersonal, unbiased” is first found 1855, influenced by German objektiv. Related: Objectively.
n.

1738, “something objective to the mind,” from objective (adj.). Meaning “goal, aim” (1881) is from military term objective point (1852), reflecting a sense evolution in French.

objective ob·jec·tive (əb-jěk’tĭv)
n.
The lens or lenses in the lower end of a microscope or other optical instrument that first receives light rays from the object being examined and forms its image. adj.

ob·jec’tive·ness n.
objective
(əb-jěk’tĭv)
The lens or mirror in a microscope or other optical instrument that first receives light rays from the object and forms the image.