lens
optical device which transmits and refracts light
thin lens
lens with a thickness that is negligible
achromatic lens
optical instrument corrected for dispersion at 2 wavelengths
field lens
positive-powered lens or group of lenses that comes after the objective lens
reading stone
a transparent stone used to magnify objects or letters
convex lens
Light transparent structure which is thick in middle and thin in its edges
cylindrical lens
lens which focuses light into a line
burning glass
large convex lens that can concentrate the sun's rays onto a small area, heating up the area and thus resulting in ignition of the exposed surface
CinemaScope
early widescreen filming system
close-up filter
secondary lens used to enable macro photography
corrective lens
transmissive optical device worn on the eye to improve visual perception
Barlow lens
type of optical lens used to increase the focal length of an optical system
Rapid Rectilinear
photographic lens design
trifocal lenses
eyeglass lens with three distinct optical powers
lens
transparent structure in the eye
toric lens
type of lens
liquid lens
liquid optical unit with tunable focal length
concave lens
light transparent structure which is thin in middle and thick in its edges
Stokes lens
ophthalmic lens
bifocal lens
eyeglass lens with two distinct optical powers
doublet
type of lens made up of two simple lenses paired together
Craig telescope
1850stelescope near London, England
Meniscus corrector
negative meniscus lens that is used to correct spherical aberration in image-forming optical systems such as catadioptric telescopes
intraocular lens
lens implanted in the eye to treat cataracts or myopia
cardinal point
term in Gaussian optics
Dioptric correction
adjustment of the optical instrument to the varying visual acuity of a person's eyes
Progressive lens
type of corrective lens used in eyeglasses
compound refractive lens
type of X-ray lens
eyepiece
type of lens attached to a variety of optical devices such as telescopes and microscopes; usually the lens that is closest to the eye when someone looks through the device, placed near the focal point of the objective to magnify the image
Mangin mirror
type of concave spherical mirror
Nimrud lens
piece of rock crystal
spherical lens
optical lens with spherical sides