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Luminate Dictionary Terms

proximal scanning
Technique using a fiber optic assembly to illuminate an opaque object and transmit an image back from it without a lens system on the distal end.
direct scanning
A scanning technique in which the object is illuminated the entire time, and in which picture elements of the object are...
photosensitive recording
The recording achieved when a surface, illuminated by a signal-controlled light beam, emits electrons or reacts in some...
ray tracing
Ray tracing is a rendering technique used in computer graphics to simulate the way light interacts with objects in a scene....
multicolor hologram
A hologram formed by reconstruction of multicolor wavefronts. The system used to produce the hologram is designed to combine...
Secondary Speckle Pattern
A self-interference effect that generates random patterns; secondary speckle pattern (SSP) typically occurs in diffuse...
autostigmatic microscope
A microscope to which a beamsplitter and illuminated reticle have been added to measure the radius of curvature of a...
fluorescence photography
The photographic recording of a subject that exhibits luminescence only for an extremely short time (10-8 s) after the...
fiber-coupled LED
A fiber-coupled LED (light-emitting diode) refers to an LED device that is optically coupled to an optical fiber for the...
brightfield
Brightfield refers to a type of microscopy and imaging technique in which the specimen is illuminated with a white light...
dark-field microscopy
A technique whereby the sample is illuminated by a hollow cone of light larger than the acceptance angle of the objective,...
safelight
Filtered light to which photographic or other photosensitive materials are not responsive; used to illuminate darkrooms when...
Dammann grating
A Dammann grating is a type of diffractive optical element (DOE) used to create an array of equally spaced,...
reflective
The term reflective is an adjective that describes the ability of a surface or material to reflect light or other forms of...
telephotometer
An instrument used to measure the luminance (brightness) of a distant object. The object is viewed through a small...
photoelectron holography
A technique proposed for studying the atomic structure of crystals by measuring the interference pattern generated when the...
tip-enhanced Raman scattering
Tip-enhanced Raman scattering (TERS) is a powerful technique that combines Raman spectroscopy with the enhanced spatial...
holographic matched filter
A specific type of hologram that will transmit a pure plane wave when the hologram is illuminated by the type of wave it is...
color match
Condition in which two stimuli appear to match in color to a specified observer, or in which two objects appear to match in...
acoustical holography
The optical reconstruction of image information contained in a sound field. First the diffraction pattern, formed by an...
Hubner rhomb
A glass rhomb that is used in photometry to compare two illuminated surfaces. This is accomplished by the rhomb's angles,...
infrared searchlight
An infrared source combined with reflecting projection optics to illuminate a target making it visible when observed through...
illuminated
Characteristic of a surface or object that has luminous flux incident upon it.
multiple wavelength interferometry
A specific form of phase shifting interferometry - commonly referred to as multiple wavelength phase shifting interferometry...
autocollimation
Technique of projecting an illuminated target at infinity and receiving the target image after reflection from a flat mirror...
light pattern
In optics, a pattern, such as the Buchmann-Meyer pattern, that may be viewed when the record surface is illuminated by a...
optical barcode reader
An optical barcode reader, commonly known as a barcode scanner, is a device that uses optical technology to capture and...
microscopy
Microscopy is a scientific technique that involves the use of microscopes to observe and study objects that are too small to...
marhic method
Nondestructive measurement of the delta and alpha of clad optical fibers that involves interferometry with the fiber...
reflectance factor
Ratio of the directionally reflected flux to that reflected in the same direction by a perfect reflecting diffuser...
fiber-coupled photoconductive antenna
A fiber-coupled photoconductive antenna (FCPA) is a type of optoelectronic device that combines a photoconductive antenna...
backlit
Refers to a display or screen that is illuminated from behind; the light is transmitted as opposed to reflected.
reconstructed image
An image that appears when a hologram is illuminated by a suitable light source, generally a laser beam.
lensless microscopy
Lensless microscopy, also known as computational or holographic microscopy, is an imaging technique that captures and...
fixed-pattern noise
Fixed-pattern noise is the measure of the static (nontemporal) differences between pixels when the detector is evenly...
flying spot
The moving spot of light emitted by a source, generally a cathode-ray tube, to illuminate specific points of an area...
snooperscope
An instrument used for viewing in low levels of illumination by means of infrared radiation. A high-aperture lens forms an...
brightness meter
An instrument for measuring the brightness (luminance) of a scene. It may be a spot meter, covering an area of a degree or...
photoconductor
A light-sensitive resistor in which resistance decreases with increase in light intensity when illuminated. The device...
effective color
The color of an object when it is illuminated by a nonisophotic source.
double-pulsed holography
Holographic recording whereby the object is illuminated by two pulses, separated by a time interval, from a Q-switched laser...
photoluminescence mapping
A technique used for noncontact inspection of semiconductor wafers. The material is illuminated by an excitation source that...
diaphragm
A flanged or plain ring with a restricted aperture, located in an optical system at any of several points, that cuts off...
Doppler-spread imaging
An imaging process, similar to specific Doppler mapping radar techniques, that utilizes a laser, an optical imaging system,...
condenser
A single positive lens or group of lenses used in a projection system to collect light from a source and cause it to...
microscope
An instrument consisting essentially of a tube 160 mm long, with an objective lens at the distant end and an eyepiece at the...
ultramicroscope
A dark-field microscope used to view extremely small objects. These objects are suspended in a gas or liquid in an enclosure...
matt
A term used to describe a nondirectionally diffusing surface that, when illuminated, appears equally bright from all angles....
endoscope
An endoscope is a medical device used for visualizing and examining the interior of hollow organs, body cavities, or...
ringlight
A circular lamp or bundles of optical fibers placed around the perimeter of an objective lens to illuminate the object field...
retroreflection
Retroreflection is a phenomenon in optics where light is reflected back toward its source, typically in a direction nearly...
transmission hologram
A hologram that is illuminated by a source opposite the viewer.
illuminated table
A desklike apparatus with an opal glass surface illuminated from beneath by fluorescent tubes. It is equipped with roll...
knife-edge scanning microscope
An imaging device originally created to image whole mouse brain volumes at microscopic resolution. The main component of the...
otoscope
An otoscope is a medical device used by healthcare professionals, particularly ear, nose, and throat (ENT) specialists,...
recording camera
A type of camera that incorporates a tiny mirror that oscillates in accordance with incoming signals. An illuminated slit is...
wide-field fluorescence microscopy
Wide-field fluorescence microscopy uses either naturally occurring structures or staining with fluorescent tags that are...
anomalous photoconductivity
A spectral phenomenon in which the degree of the photoresponse of an illuminated semiconductor is determined by the...
object beam
In holography, the wave of light that illuminates the object to be recorded, which diffracts it to the recording medium,...
collimator
An optical instrument consisting of a well- corrected objective lens or mirror with a light source and or object/image (i.e....
computer-generated hologram
A computer-generated hologram (CGH) is a holographic image produced using computational methods and algorithms, rather than...
opposition effect
Also referred to as the opposition surge, the opposition effect is a photometric phenomenon in which a rough retroreflective...
photochromic
Photochromic refers to a property exhibited by certain materials, typically organic compounds or dyes, which undergo...
flow cytometry
Flow cytometry is a powerful technique used in biology and medicine for the quantitative analysis of the physical and...
Koehler illumination
A two-stage illuminating system for a microscope in which the source is imaged in the aperture of the substage condenser by...
scanning spot
The spot illuminated on a cathode-ray tube by the initial impact of the scanning ray and the screen.
total internal reflection fluorescence
Total internal reflection fluorescence (TIRF) microscopy is an advanced fluorescence microscopy technique that leverages the...
photodielectric effect
The effect, present in particular phosphors, that is defined as a transformation in the dielectric constant of a material...
cross wire
Fine lines, wires or threads used in the focal plane of many optical instruments to point out and locate particular objects...
oblique illumination
A common technique in microscopy, oblique illumination is one in which the object is illuminated by a light source that is...
radiuscope
A microscope to which a beamsplitter and illuminated reticle have been added that is used to measure contact lenses.
photon correlation spectroscopy
Spectroscopy used to study the concentration, diffusion and Brownian motion of small particles suspended in a fluid by...
double-pulsed holographic interferometry
Interferometric measurement of the interference pattern recorded when a complex object is illuminated by two laser pulses...
laserstrobe
A stroboscopelike apparatus that uses a copper vapor laser to illuminate an object for very short time periods (about 30 ns).
dissector
In optical character recognition, the mechanical or electronic transducer used to detect the level of illumination present...
light sheet fluorescence microscopy
Also known as single plane illumination microscopy (SPIM), this process was designed for imaging of sensitive samples and...
diffuse reflectance spectroscopy
Diffuse reflectance spectroscopy (DRS) is a nondestructive analytical technique used to investigate the optical properties...
infrared microscope
A type of microscope that uses radiation in the infrared region to illuminate objects that are opaque to visible radiation....
holographic camera
A holographic camera, also known as a holographic imaging system or holographic recorder, is a specialized device used to...
quantum dot light-emitting diode
Quantum dot light-emitting diode (QLED) is a display technology that utilizes quantum dots, which are semiconductor...
back-illuminated CCD
A CCD that has been reduced in thickness by etching so that light passes through the back layers of the CCD. This type of...
autofluorescence
Autofluorescence refers to the natural emission of fluorescence exhibited by certain biological structures or molecules when...
borescope
A device for the internal inspection of hard-to-get-at mechanical parts, such as rifle barrels, sewer pipes, oil wells, or...
diffraction grating
A diffraction grating is an optical component consisting of a surface with a periodic structure of equally spaced, parallel...
holography
Holography is a technique used to capture and reconstruct three-dimensional images using the principles of interference and...
illuminated magnifier
A magnifying lens fitted with a battery-operated lamp by which an object can be conveniently illuminated during observation.
reflection hologram
A hologram that is illuminated by a source from the viewer's side.
luminance factor
Ratio of the luminance of a specimen to that of a perfect reflecting or transmitting diffuser identically illuminated.
frames per second
The number of separate images exposed by a cine camera in a second or the number illuminated by a cine projector in a...
flat-field frame
A frame taken with a CCD camera of a surface that is evenly illuminated by diffuse light. This frame shows irregularities in...
scopometer
A device used to take turbidimetric or nephelometric measurements by considering the contrast between a constant brightness...
diffuse density
The logarithm of the reciprocal of diffuse transmittance. Diffuse density results when a sample is diffusely illuminated.
multileg lightguide
A fiber optic bundle split along its length with the ends of the fibers extending separately to illuminate different points...

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