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31 terms
Photonics Dictionary
Clear All Filters x
chart x
contour projection chart
A large-scale, precise drawing of the contours of a perfect mechanical part, often with plus and minus tolerances drawn or indicated. For quality control decisions, enlarged images of mechanically...
facsimile chart
Data gathered by a facsimile system and converted into graphic, readable form; generally used in meteorology. Also known as fax chart or fax map.
Foucault chart
->
resolution target
A chart on paper or glass containing a series of sets of lines at progressively smaller spacing and used to ascertain the limiting number of lines per millimeter that an optical system is capable of...
resolution chart
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resolution target
A chart on paper or glass containing a series of sets of lines at progressively smaller spacing and used to ascertain the limiting number of lines per millimeter that an optical system is capable of...
resolution test chart
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resolution target
A chart on paper or glass containing a series of sets of lines at progressively smaller spacing and used to ascertain the limiting number of lines per millimeter that an optical system is capable of...
resolving power chart
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resolution target
A chart on paper or glass containing a series of sets of lines at progressively smaller spacing and used to ascertain the limiting number of lines per millimeter that an optical system is capable of...
sine wave testing chart
A test chart whose luminance changes uniformly in one direction according to a sinusoidal rule. These charts carry groups of black lines on a white ground, the intensity profile across the lines...
test chart
->
resolution target
A chart on paper or glass containing a series of sets of lines at progressively smaller spacing and used to ascertain the limiting number of lines per millimeter that an optical system is capable of...
visual test chart
A series of high contrast block letters or similar objects arranged to permit the evaluation of eyesight in humans.
acuity (visual acuity)
Visual acuity specifically refers to the clarity or sharpness of vision, typically measured by the ability to discern the details of objects at a specific distance. It is a fundamental measure of the...
acuity, visual
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acuity (visual acuity)
Visual acuity specifically refers to the clarity or sharpness of vision, typically measured by the ability to discern the details of objects at a specific distance. It is a fundamental measure of the...
aerial mapping
The use of photographs taken from the air to construct graphic maps and charts of ground surfaces.
aerocartography
The creation of topographical maps and charts from a stereographic record produced through the overlapping of consecutive aerial photographs by more than 50 percent.
American Chemical Society
The American Chemical Society (ACS) is a scientific society based in the United States that supports scientific inquiry in the field of chemistry. Founded in 1876 and chartered by the U.S. Congress,...
computer graphics
Computer output in the form of pictorial representation (graphs, charts, drawings, etc.) that is displayed visually.
data analysis software
Data analysis software is a category of software tools used for the systematic examination of data sets to uncover patterns, trends, relationships, and insights. It supports a range of analytical...
definition test object
A chart, either printed on paper or prepared photographically on glass plates or film, that consists of 3-bar resolution test objects, sine-wave test objects for modulation transfer function...
gamma-ray spectrometer
An instrument used to detect and measure the energy distribution of gamma rays. It has been used to chart the radioactivity at the lunar surface.
lens testing equipment
Lens testing equipment refers to a range of specialized tools and instruments used to evaluate the optical performance, quality, and characteristics of lenses. These instruments are essential for...
linar
Celestial point sources that emit specific wavelengths of radiation that appear on spectral charts as narrow lines. The term linar is a contraction of line and star.
microphotofabrication
The formation of microimages for microreduction. The technique is used, for example, in the production of precision reticles or resolution charts. The sensitized materials used in the process must...
modulation transfer function analysis/measurement equipment
MTF analysis/measurement equipment refers to instruments and tools used to measure and analyze the modulation transfer function (MTF) of optical systems. The MTF is a quantitative measure of the...
Munsell Book Of Color
A collection of color samples arranged in charts according to equal visually spaced steps in Munsell hue, value and chroma.
resolution target
A chart on paper or glass containing a series of sets of lines at progressively smaller spacing and used to ascertain the limiting number of lines per millimeter that an optical system is capable of...
Snellen letter
The letter form used on visual performance test charts. The overall letter height is equal to five times the thickness of individual strokes. Normal 20/20 vision is represented by the ability to...
space pattern
On a test chart, the pattern designed to direct and measure geometric distortion.
spectrogram
A chart formed by a spectrograph; the record of the spectral range. See spectrograph.
spectrum analyzer
A scanning device used to cyclically tune through a given frequency range to determine the amplitude-frequency distribution of the signals present, usually by displaying output on a chart or...
x-ray spectrogram
A chart of an x-ray diffraction pattern.
x-ray spectrograph
An instrument that is used to chart x-ray diffraction patterns, such as an x-ray spectrometer having photographic or other recording implements.
XY recorder
A recorder that plots, on a chart, the interaction between two variables, not directly representing time.
Photonics Dictionary
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