lens
lens
Definition
lens (lenz)
noun
- a piece of glass, or other transparent substance, with two curved surfaces, or one plane and one curved, regularly bringing together or spreading rays of light passing through it: a lens or combination of lenses is used in optical instruments, eyeglasses, etc. to form an image
- a combination of two or more such pieces
- any of various devices used to focus microwaves, electrons, or sound waves
- Anat. a transparent, biconvex body situated between the iris and the vitreous humor of the eye: it focuses upon the retina light rays entering the pupil
Etymology: L, lentil: from the resemblance to the shape of a lentil
transitive verb
- to photograph
- to make a film of
lens
Synonyms
lens
n.
Types of lenses include: spherical, planoconcave, double concave, biconcave, plano-convex, double convex, biconvex, diverging concavo-convex, converging concavo-convex, diverging, converging, diverging meniscus, converging meniscus, achromatic, anastigmatic, photographic, simple.
lens
Usage Examples
Converse of object
- zoom: I found the extra capacity of the zoom lens over more standard cameras came in really handy.
- tint: Superb fully coated violet tinted lenses give absolute clarity right to the edge of the sight picture.
- magnify: Virtual images are often used, for example, in magnifying lenses, where the image must be viable from different angles.
Adjective modifier
- optical: The optical lens of the video camera focuses the image on the chip mounted behind the lens.
- 3x: Features The 3x optical zoom lens has a focal length equivalent to 38 - 114mm in 35mm format.
- interchangeable: Unlike interchangeable lenses, this one's fixed to the camera for ever.
- intraocular: The intraocular lens will be unfolded once it is in your eye.
- convex: A convex lens has a focal length of 150 mm.
- aspherical: The lens part of the DMC-FX01 comprises of seven elements in six groups, incorporating four aspherical lenses to generate high optical performance.
Modifies a noun
- wearer: Dry eye is the most common complaint among contact lens wearers.
- hood: A metal lens hood is incorporated into the design.
- aperture: Aperture control The lens aperture determines the amount of light that can enter the camera for a set shutter speed.
- flare: Perhaps it is nothing more than a lens flare, but the general photographic context of the image would suggest not.
- implantation: Extracapsular cataract extraction with posterior chamber intraocular lens implantation was the routine procedure.
Noun used with modifier
- zoom: Now, the world of digital SLR photography can be enjoyed with just a single zoom lens!
- telephoto: On safari, use 200 or 400 ASA with a zoom or telephoto lens.
- wide-angle: The gentleman at the bus stop probably didn't realize my wide-angle lens would capture him.
- macro: Macro lenses usually attach to your housing via a screw thread or an adapter.
- magnifying: The images were taken using a small magnifying lens in front of the camera lens held in place with putty.
- fisheye: How It's Done All the original images were taken with a Zuiko 8 mm circular fisheye lens giving a full 180° circular image.
Browse dictionary entries near lens
- lent
- lentamente
- lentando
- Lenten
- lentic
- lenticel
- lenticular
- lenticulate
- lenticule
- lentiginous
