With respect to microscopy, also called dispersive staining, optical staining the projection of colors through areas of a colorless specimen by color filters that are constructed to fit over the condenser lens. This technique requires no physical...

A device used to view microfilmed documents where the image on film is projected, in magnified form, onto a rear projection...

A rear or front projection screen composed of minute optical surfaces that introduce a spread to the light beam that...

1. An optical device used for projection of enlarged images of transparencies or lantern slides on a screen. 2. A device...

A high-speed, narrow-field lens consisting of two achromats spaced about the aperture stop. Its uses include portrait...

The term "embedded laser" typically refers to a laser device that is integrated or embedded into a larger system or...

A projection screen having vertical ribs or flutes set into a plastic surface.

A form of lens assembly used in a projection system to maximize efficiency and assure uniform illumination of the object...

A galvanometric scanner, also known as a galvanometer scanner or galvo scanner, is a type of optical scanning device used to...

A method of demonstration or examination using a point source illumination without the use of any projection lens between...

Freeform mirrors refer to reflective optical components that deviate from traditional symmetric or rotationally symmetric...

The projection of a plane or grid pattern of light onto an object. It can be used for the determination of three-dimensional...

The measurement of surface temperature by a thermograph that forms a pattern of the heat radiated by the surface on a...

A color-television viewing system with three kinescopes, three lenses and three deflection yokes used to form the red, green...

The use of miniature scanners to project raster-scanned video images directly onto the surface of the human retina,...

A device used to project a small area of light on a screen for indication.

A compact high-pressure light source in which an electrical discharge between electrodes spaced no more than 12 mm apart...

A term used to denote a difference in magnification along mutually perpendicular meridians. Anamorphic systems are basically...

The large, usually flat surface onto which an image is projected for viewing. May be reflecting or transmitting (rear...

A Fresnel lens is a type of optical lens that consists of a series of concentric grooves or steps carved into a flat, thin...

A lens designed for projection of color transparencies.

A compact optical projection system, mounted on or built into a helmet, and used to project data or a scene directly into...

An array or mosaic of optical surfaces. May be a number of lenses closely packed to form multiple images or many parallel...

A single positive lens or group of lenses used in a projection system to collect light from a source and cause it to...

A technique used in photogrammetry to ensure parallelism during projection printing. Failure to do this will change a...

A lenticular screen having the lenticules tipped about 20° to compensate for off-normal projection.

A method of producing magnified images by x-rays. The specimen is placed close to a point source of x-rays; the...

Liquid crystal on silicon (LCoS) is a display technology that combines liquid crystal materials with silicon-based...

A variation of tomography in which several photographs of a patient are taken at different angles, and back-projection of...

1. A constituent part. It may consist of two or more parts cemented together, or with near and approximately matching...

An eyepiece located at the near end of the microscope tube. It often is a simple Huygens eyepiece, but compensating and...

A television display system in which the television signal is converted to an image that is projected onto either a front or...

The arc formed when the rare gas xenon is excited electrically and emits a brilliant white light. Xenon is used to fill...

A lens system that is capable of producing a 360° image, or one that is very close to that. In recording, the image may...

An optical projection device designed to project positive color transparencies onto a screen for viewing.

A contour mapping technique that involves projection of a grating onto an object to produce a shadow grating that is...

The projection of the image beam by a cathode-ray tube through a mask, where it is deflected through the suitable character...

A projection printer that is capable of reproducing a multiplicity of images from a master transparency on a single support...

An ophthalmic instrument used to measure the magnitude and direction of the maximum and minimum powers of a spectacle lens,...

A contour mapping technique that uses electronic scanning and sampling techniques instead of a reference grating (see moire...

A lamp used in projection that is made with a reflector built into the bulb, normally by coating a portion of its interior...

A large-scale, precise drawing of the contours of a perfect mechanical part, often with plus and minus tolerances drawn or...

A microdisplay is a miniature electronic display technology that is designed to project visual information onto a small...

A term used to describe a nondirectionally diffusing surface that, when illuminated, appears equally bright from all angles....

In a lens or lens system, that surface at which the projections of an entering and exiting ray intersect. Also known as the...

An infrared source combined with reflecting projection optics to illuminate a target making it visible when observed through...

Chirality is a property of certain molecules and objects in which they are non-superimposable on their mirror images. In...

A microscope that uses an extremely fine x-ray focal point to produce an enlarged photographic image of a sample. Also known...

A projector used to project transparencies. A horizontal 8 x 10-in. stage for writing or laying down preformed...

The use of retroreflective projection technology (RPT) to project a background image onto a masked object, such as a vehicle...

Also known as amplification. 1. The increase in a signal that is transmitted from one point to another through an amplifier....

An evacuated bulb containing a tungsten filament that is heated by passing an electric current through it. In domestic light...