- material,
while a
compound lens consists of
several simple lenses (elements),
usually arranged along a
common axis.
Lenses are made from
materials such...
-
Contact lenses, or
simply contacts, are thin
lenses placed directly on the
surface of the eyes.
Contact lenses are
ocular prosthetic devices used by over...
- m**** production.
Typical rectilinear lenses can be
thought of as "improved"
pinhole "
lenses". As shown, a
pinhole "
lens" is
simply a
small aperture that blocks...
-
activating light, the
lenses return to
their clear state.
Photochromic lenses may be made of polycarbonate, or
another plastic. Gl****
lenses use
visible light...
-
other effects of long-focus
lenses are the same for
telephoto lenses of the same
specified focal length. Long-focal-length
lenses are
often informally referred...
-
Progressive lenses are
corrective lenses used in eyegl****es to
correct presbyopia and
other disorders of accommodation. They are
characterised by a gradient...
-
cases if
Multifocal IOLs,
Trifocal IOLs or EDOF
lenses are used.[citation needed]
Intraocular lenses have been used
since 1999 for
correcting larger errors...
-
quality of the
lens,
which is why
precise imaging applications such as
photography usually still use
larger conventional lenses.
Fresnel lenses are usually...
-
lenses can be as
short as 1–2 mm.
Fisheye lenses also have
other applications, such as re-projecting
images originally filmed through a
fisheye lens,...
-
versions of PC
lenses.
Olympus produced 35 mm and 24 mm
shift lenses.
Canon currently offers 17 mm, 24 mm, 50 mm, 90 mm and 135 mm tilt/shift
lenses.
Nikon currently...