About The Word Lens
Learn about the word Lens to help solve your crossword puzzle. Discover Lens definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.
Lens
Lens Definition And Meaning |
---|
What's The Definition Of Lens?
[n] a transparent optical device used to converge or diverge transmitted light and to form images
[n] electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons [n] biconvex transparent body situated behind the iris in the eye; it focuses light waves on the retina [n] genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils Synonyms | Synonyms for Lens: crystalline lens | electron lens | genus Lens | lens system Related Terms | Find terms related to Lens: baby blues | banjo eyes | bright eyes | clear eyes | cornea | eye | eyeball | eyelid | goggle eyes | iris | lid | naked eye | nictitating membrane | oculus | optic | optic nerve | orb | organ of vision | peeper | popeyes | pupil | retina | saucer eyes | sclera | starry orbs | unaided eye | visual organ See Also | anastigmat | anastigmatic lens | camera lens | compound lens | concave lens | condenser | contact | contact lens | converging lens | convex lens | crown lens | diverging lens | electronic equipment | eye | eyeglass | eyepiece | Fresnel lens | intraocular lens | lens capsule | monocle | object glass | objective | ocular | oculus | optic | optical condenser | optical device | optical instrument | optical lens | organ | Papilionoideae | peeper | rosid dicot genus | subfamily Papilionoideae Lens In Webster's Dictionary \Lens\ (l[e^]nz), n.; pl. {Lenses} (-[e^]z). [L. lens a
lentil. So named from the resemblance in shape of a double
convex lens to the seed of a lentil. Cf. {Lentil}.] (Opt.)
A piece of glass, or other transparent substance, ground with
two opposite regular surfaces, either both curved, or one
curved and the other plane, and commonly used, either singly
or combined, in optical instruments, for changing the
direction of rays of light, and thus magnifying objects, or
otherwise modifying vision. In practice, the curved surfaces
are usually spherical, though rarely cylindrical, or of some
other figure. Lenses
Note: Of spherical lenses, there are six varieties, as shown
in section in the figures herewith given: viz., a
plano-concave; b double-concave; c plano-convex; d
double-convex; e converging concavo-convex, or
converging meniscus; f diverging concavo-convex, or
diverging meniscus.
{Crossed lens} (Opt.), a double-convex lens with one radius
equal to six times the other.
{Crystalline lens}. (Anat.) See {Eye}.
{Fresnel lens} (Opt.), a compound lens formed by placing
around a central convex lens rings of glass so curved as
to have the same focus; used, especially in lighthouses,
for concentrating light in a particular direction; -- so
called from the inventor.
{Multiplying} {lens or glass} (Opt.), a lens one side of
which is plane and the other convex, but made up of a
number of plane faces inclined to one another, each of
which presents a separate image of the object viewed
through it, so that the object is, as it were, multiplied.
{Polyzonal lens}. See {Polyzonal}.
|
More Crossword Puzzle Words
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
Cross Word Of The Day
- Pronoun ‐ a function word that is used in place of a noun or…
- Oracle of delphi ‐ (Greek mythology) the oracle at Delphi where a priestess supposedly…
- Angst ‐ an acute but unspecific feeling of anxiety; usually reserved…
- Slightly ‐ to a small degree or extent; "his arguments were somewhat self-contradictory";…
- Considerately ‐ in a considerate manner; "they considerately…
- Leg covering ‐ a garment covering the leg (usually extending from the knee to…
- Accelerando ‐ a gradually increasing tempo of music; "my ear will not accept…
- Cardium edule ‐ common edible…
- The centaur ‐ a conspicuous constellation in the southern hemisphere near the…
- American beech ‐ North American forest tree with light green leaves and edible…