n
(ophthalmology) An instrument used to observe aberration of the eye
n
A type of compressed air camera for making films, constructed by Polish inventor Kazimierz Prószyński in 1909
n
An instrument for viewing pictures by means of a lens, so as to present them in their natural proportions and relations.
n
An arrangement of lenses and mirrors making it possible to see around obstructing objects.
n
A mirrored device which gives a correct image of an anamorphosis.
n
An optical device (often a toy) used to produce a form of anamorphosis or to view distorted figures
n
A device used to view beneath the surface of water
n
An instrument for examining the condition of the ear.
n
An optical instrument for examining one's own eye.
n
(historical) An early kind of stereopticon or projector.
n
An early device to show moving pictures on a screen.
n
(historical) A form of eidoloscope, serving as both camera and projector.
n
A bioptic telescope used to improve distance vision
n
An early form of movie projector
n
An optical instrument used for seeing inside tight spaces, consisting of a rigid or flexible tube with an optical relay inside so that the view through a lens or window at one end of the tube may be seen from a lens or eyepiece in the opposite end of the tube.
n
Alternative form of borescope [An optical instrument used for seeing inside tight spaces, consisting of a rigid or flexible tube with an optical relay inside so that the view through a lens or window at one end of the tube may be seen from a lens or eyepiece in the opposite end of the tube.]
n
Alternative form of kaleidoscope [An instrument consisting of a tube containing mirrors and loose, colourful beads or other objects; when the tube is looked into and rotated, a succession of symmetrical designs can be seen.]
n
(historical) An optical instrument similar to the camera obscura but without the need for a source of illumination.
n
An instrument for showing the optical effects of colour.
n
A reflecting telescope, part of which is made to rotate eccentrically, so as to produce a ringlike image of a star, instead of a point; used in studying the scintillation of the stars.
n
A device that adds colours to a monochrome image or adjusts existing colours to appear more natural
n
(science fiction) A device for viewing the past or the future.
n
An anamorphic lens series used from 1953-1967 for shooting Twentieth Century Fox widescreen movies
n
Any of several early motion picture projectors
n
A later system in which a single film was projected onto the curved screen, achieved by means of camera and/or projector lens adaptations.
n
(photography) Synonym of macro lens
n
aligning lenses along line of sight to minimize aberrations
n
An instrument for visualising stressed regions, especially internal regions, in substances such as glass, by detecting differences in the degree of rotation of the plane of polarisation, generally by placing the object between crossed polarizers.
n
A microscope with more than one lens, arranged so that the image formed by one lens is further magnified by another.
n
A thin glass plate used to cover samples mounted on a microscope slide.
n
Obsolete form of celoscope.
n
An arrangement of two mirrors that forms four reflections of an object placed between them
n
A dark box constructed for viewing transparent pictures, with or without a lens.
n
(medicine) A flat piece of glass or transparent plastic, used to examine lesions in the skin
n
A digital camera coupled with an optical telescope for the recording of distant images.
n
(obsolete) Any lens system, such as a telescope.
n
Alternative form of diopter [A unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters.]
n
Alternative spelling of diopter [A unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters.]
n
(obsolete) Alternative form of diopter [A unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters.]
n
(historical) An early motion picture system.
n
(optics) An instrument for determining the magnifying power of a microscope
n
(historical) A device that presents the illusion of motion using transparent serial photographs arranged on a rotating wheel.
n
(obsolete) A kind of reflecting microscope.
n
Alternative form of engiscope [(obsolete) A kind of reflecting microscope.]
n
An instrument resembling a microscope, for the observation of entoptic phenomena.
n
A machine that projects images onto a screen.
n
A form of epidiascope that projects images of opaque objects
n
An instrument that displays an enlarged image from a microscope on a screen
n
(American spelling) a flexible fibreoptic device for viewing otherwise inaccessible areas
n
A microscope or similar optical instrument made by origami-like folding of a single piece of card (plus one or more lenses)
n
A prismatic lens for use in goniometers
n
any of various instruments allowing a clinician to view the irideocorneal angle through a mirror or prism
n
Alternative form of graphoscope [An optical instrument for magnifying engravings, photographs, etc., usually having one large lens and two smaller ones.]
n
An optical instrument for magnifying engravings, photographs, etc., usually having one large lens and two smaller ones.
n
An instrument for exhibition or illustration of the phenomena of halos, parhelia, and the like.
n
An optical device that presents a separate image to each eye
n
A scientific method of measuring anxiety, stress, neophilia and emotionality in animals, involving an enclosed area with a floor covered in holes that the animal may or may not choose to explore.
n
A three-dimensional image of an object created by holography.
n
a transducer that converts underwater sound waves into electrical signals, rather like a microphone
n
A device for viewing objects below the surface of the water.
n
an early television camera having a mosaic of photoactive cells
n
A kind of ophthalmoscope.
n
A philosophical toy for exhibiting the prismatic tints by means of thin films.
n
An instrument consisting of a tube containing mirrors and loose, colourful beads or other objects; when the tube is looked into and rotated, a succession of symmetrical designs can be seen.
n
(dated) A form of stereoscope
n
(historical) An early television receiver tube.
n
(dated) A machine for projecting chronophotographs upon a screen for the purpose of producing the effect of an animated picture, sometimes with an accompanying soundtrack.
n
(historical) A machine combining a kinetoscope and a phonograph synchronized so as to reproduce a scene and its accompanying sounds.
n
An instrument for illustrating the production of kinematic curves by the combination of circular movements of different radii.
n
An optician's instrument for verifying spectacle prescriptions at the laboratory.
n
An instrument for testing the colour perception of the eye, or for comparing different lights in terms of their constituent colour or relative whiteness.
n
Alternative form of macro lens [(photography) A lens that allows a camera to focus at very close range to photograph small objects.]
n
A wide-field imaging device
n
A large optical instrument used to get a close-up of small objects.
n
An optical apparatus in which pictures are viewed through a large lens with stereoptical effects.
n
(photography) An enlarging camera.
n
(rare, science fiction) Goggles that help to see minuscule objects.
n
(dated) A slide projector.
n
(electronics) A device that produced a single video image
n
A motion-picture device of the late nineteenth century, to be viewed by one person at a time through a peephole.
n
(obsolete, photography) A device used to display negatives, now only used to display x-ray images
n
An optical instrument that provides night vision.
n
Alternative form of Nipkow disk [A mechanical, geometrically-operating image scanning device, a fundamental component of early mechanical television.]
n
A mechanical, geometrically-operating image scanning device, a fundamental component of early mechanical television.
n
(electronics, informal) oscilloscope
n
A device in microscopes for locating an object in the field before examination at higher magnification.
n
objective (part of a microscope, telescope, etc.)
n
An instrument, consisting of a tube with one end open and the other end covered with a thin flexible membrane with a mirror attached to its centre, used for exhibiting upon a screen, by means of rays reflected from the mirror, the vibratory motions caused by sounds that enter the tube.
n
A scientific instrument that uses a highly focused laser beam to hold and move the microscopic or smaller objects such as atoms and droplets, in a manner similar to tweezers.
n
A telescope with a diagonal eyepiece, suspended vertically in gimbals by the object end beneath a fixed diagonal plane mirror. It is used for delineating landscapes by means of an attached pencil.
n
An instrument for drawing projections of a skull.
n
An instrument for exhibiting the repulsive action produced by light or heat in a vacuum; a modification of the radiometer.
n
A device used to view a stereoscopic image from a pair of photographs
n
(historical) A very wide-angled photographic lens.
n
An instrument for producing scale drawings of the pelvis.
n
(medicine) A table or other means of calculating the menstrual cycle.
n
A kind of early telescope.
n
An instrument for obtaining, and transferring to a picture, the points and outlines of objects, so as to represent them in their proper geometrical relations as viewed from a single point.
n
Alternative form of phacoscope [An instrument in the form of a dark chamber for observing the changes in the crystalline lens during accommodation.]
n
An instrument in the form of a dark chamber for observing the changes in the crystalline lens during accommodation.
n
An instrument for studying the focusing of the eye.
n
An optical instrument or toy, resembling the phenakistoscope and illustrating the same principle.
n
Alternative form of phantascope [An optical instrument or toy, resembling the phenakistoscope and illustrating the same principle.]
n
Alternative form of phenakistoscope [An early animation device consisting of a disc or drum which rotated, showing successive images through slits, often via a mirror, thus producing the illusion of motion.]
n
An early animation device consisting of a disc or drum which rotated, showing successive images through slits, often via a mirror, thus producing the illusion of motion.
n
An instrument for studying the motions of sounding bodies by optical means. It consists of a tube across whose end is stretched a film of soap solution thin enough to give coloured bands, whose form and position are affected by sonorous vibrations.
n
photography with a mobile phone that is connected to a spotting scope
n
A device that shows images demonstrating the movement of a person's face as they speak.
n
An instrument used in eye examinations to determine an individual's prescription, the patient looking through various lenses at a chart on the other side.
n
A combination of three optical lanterns for projecting objects on a screen in natural colors. The images of three partial photographs taken through color screens (red, green, and blue, respectively) are superimposed. Each image is given its own primary color, and these colors blend and reproduce the colors of the object.
n
(historical, rare) A nephoscope registering by photography, typically consisting of a pair of cameras used simultaneously.
n
(medicine) A form of endoscope using an electric light.
n
Anything employed for the observation of light or luminous effects.
n
The use of a photoscreener to detect lazy eye in children
n
Alternative form of phenakistoscope [An early animation device consisting of a disc or drum which rotated, showing successive images through slits, often via a mirror, thus producing the illusion of motion.]
n
Alternative form of phenakistoscope [An early animation device consisting of a disc or drum which rotated, showing successive images through slits, often via a mirror, thus producing the illusion of motion.]
n
(obsolete, medicine) A device for viewing the cavities of the body
n
(historical) An animation device invented in 1877 and used in early image projection. It consisted of a series of pictures and an arrangement of mirrors in a horizontally rotating box.
n
(historical) A device containing a double prism, used to measure refraction and thus diagnose anomalies in a patient's vision.
n
(historical) A kind of kinetoscope, a device for exhibiting motion pictures.
n
(optics) An optical instrument that reverses perception of depth.
n
An oscilloscope used as the viewing screen of a radar system.
n
An infrared technique used by art historians to detect layers beneath the top surface of a painting and thus determine whether it is an original.
n
A grid, network, or crosshatch found in the eyepiece of various optical instruments to aid measurement or alignment
n
An instrument used for examining the refraction of light within the eye.
n
(slang, humorous) A hypothetical instrument that allows diagnostic and management decisions to be made with medical hindsight.
n
(slang, humorous) Synonym of retrospectoscope
n
(film, television, visual effects) A technique in which animators trace live-action movement frame by frame.
n
(photography) A device that converts glass slides into digital files
n
(architecture, archaic) A vertical section of a building; a sciagraphy.
n
A kind of magic lantern.
n
An instrument that discloses objects in the dark or in a faint light.
n
Alternative form of selenoscope [(obsolete) An instrument for viewing the Moon.]
n
(obsolete) An instrument for viewing the Moon.
n
A microscope with only one lens.
n
(photography) A device used to produce a digital copy of a slide
n
Synonym of microscope slide
n
An instrument constructed on the principle of the photophone and used in spectrum analysis as an adjunct to the spectroscope.
n
A mirror, especially one used in a telescope.
n
(historical) An early device for observing individual nuclear disintegrations.
n
(historical) A device for inducing artificial respiration by means of an airtight case for the body and an air pump.
n
An optical device, typically embedded in a bijou, utilising a modified Stanhope lens for viewing microphotographs embedded in the device; invented by René Dagron
n
(by extension) Any object or device equipped with audio components that reproduces sound in stereo, such as a stereo console in the home.
n
An instrument with two lenses, by which an image of a single picture projected on a screen of ground glass is made to present an appearance of relief, and may be viewed by several persons at once.
n
Alternative form of stereopticon [A magic lantern, especially one with two projectors arranged so as to produce dissolving views or combinations of images.]
n
A magic lantern, especially one with two projectors arranged so as to produce dissolving views or combinations of images.
n
A photograph produced by such a machine.
n
A device that displays a series of brief images; used by psychologists to investigate perception, memory and learning.
n
An early form of animated-picture machine in which the chronophotographs were mounted upon the periphery of a rotating wheel.
n
An instrument formed by combining prisms so as to correct the chromatic aberration of the light while linear dimensions of objects seen through the prisms are increased or diminished
n
(photography) The enlargement of an image achieved with a teleconverter lens.
n
(photography) A secondary lens mounted between the camera and a photographic lens so as to enlarge the central part of an image obtained by the objective lens.
n
(historical) An instrument for telegraphically transmitting a picture and reproducing its image as a positive or negative. The transmitter includes a camera obscura and a row of minute selenium cells. The receiver includes an oscillograph, relay, equilibrator, and an induction coil whose sparks perforate a paper with tiny holes that form the image.
n
(historical) A combination of the camera lucida and telescope for drawing and measuring distant objects.
n
A kind of kaleidoscope with a lens and an open view, capable of forming kaleidoscopic patterns from objects outside the instrument, rather than from items installed as part of it.
n
Any apparatus for making distant objects visible by the aid of electric transmission.
n
(dated, rare) The use of a combination of the camera lucida and telescope for drawing and measuring distant objects.
n
Any of several optical instruments that combine the functions of a telescope and microscope e.g. projecting a microscope image onto a screen.
n
(historical) A telelectric device for producing images of visible objects at a distance.
adj
Of or pertaining to a lens system used to produce an enlarged image of a distant object.
n
(photography) Photography of distant subjects using a telephoto lens.
n
(dated) A polariscope designed to be attached to a telescope.
n
An enhanced relascope that can be used at a distance.
v
(transitive, intransitive) To slide or pass one within another, after the manner of the sections of a small telescope or spyglass.
adj
Shaped like a telescope, with retractile tubular portions.
n
The manufacture and use of telescopes.
n
A spectrograph built into a telescope.
n
(historical) An instrument for telegraphically transmitting a picture.
n
A binocular telescope used for producing a stereoscopic image of a distant object.
n
(photography) An optical amplifier, used especially in amateur astronomy to magnify an image.
n
(television, historical) An early color television system using three separate video tubes with colored phosphors producing the primary colors, combining the images through dichroic mirrors onto a screen for viewing.
n
The state of a microscope that is focused slightly in front of the specimen
n
A special oscilloscope that displays an X-Y plot of two signals so as to indicate their relationship.
n
(historical) A kind of stereoscopic camera.
n
An instrument resembling the phenakistoscope.
n
(historical) An early machine for exhibiting animated pictures.
n
(historical, photography) A device, somewhat like a kaleidoscope, that splits an image into parts
n
An optical toy, in which figures made to revolve on the inside of a cylinder, and viewed through slits in its circumference, appear like a single figure passing through a series of natural motions as if animated or mechanically moved.
n
A device used for viewing perspective prints, consisting of a lens and a slanting mirror on a stand.
n
(historical) A mechanical toy by means of which images of animals are made to go through motions on a screen.
n
(photography, historical) An instrument developed by Eadweard Muybridge in the 1870's, similar to the phenakistoscope. The instrument involves a disc that includes serial pictures being rotated in front of a light source, projecting them upon a screen, to exhibit the natural movements of animals and the like.
n
(historical) The use of chronophotography to capture animated images of animal locomotion.
n
Alternative spelling of zoopraxiscope [(photography, historical) An instrument developed by Eadweard Muybridge in the 1870's, similar to the phenakistoscope. The instrument involves a disc that includes serial pictures being rotated in front of a light source, projecting them upon a screen, to exhibit the natural movements of animals and the like.]
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