Excelitas PCO GmbH - Industrial Camera 11-24 VS LB

Photonics Marketplace

Suppliers Products

Handbook Institutions Dictionary

Show Filters

Hide Filters

Type

DefinitionsAbbreviations/Acronyms

Browse by Letter

Zurich Instruments AG - Challenge Us 10/24 MR

Sheetak - Cooling at your Fingertip 11/24 HP

8,726 terms

Photonics Dictionary

spatial resolution

Spatial resolution refers to the level of detail or granularity in an image or a spatial dataset. It is a measure of the smallest discernible or resolvable features in the spatial domain, typically...

spatially coherent radiation

The correlation of radiation between the phases of monochromatic radiation emanating from two separate points.

spatially offset Raman spectroscopy

Spatially offset Raman spectroscopy (SORS) is a technique that extends traditional Raman spectroscopy by incorporating measurements at different spatial offsets. This method allows for the selective...

spatio-temporal optical coherence tomography

Spatio-temporal optical coherence tomography (ST-OCT) is an advanced imaging technique that combines the principles of optical coherence tomography (OCT) with spatio-temporal modulation methods to...

spatter

Of evaporative coatings, a condition resulting when small chunks of material fly from the hot crucible onto the substrate surface and adhere there.

SPC

statistical process control

SPD

spectral power distribution

SPE

solar proton event

specific detectivity -> D*

detectivity

specific stiffness

The ratio of Young's modulus to density of a material.

speckle effect

In laser systems, the granular effect that is noted when observing the expanded cross section of a laser beam.

speckle imaging

A technique for obtaining improved resolution of images produced by large telescopes and distorted by the effects of atmospheric turbulence. Many individual exposures are recorded at high speeds by a...

speckle interferometry -> speckle metrology

Refers to the variety of techniques that use the interference pattern produced by laser light diffusely reflected by an object. There are two basic techniques: direct laser photography, used when...

speckle metrology

Refers to the variety of techniques that use the interference pattern produced by laser light diffusely reflected by an object. There are two basic techniques: direct laser photography, used when...

speckle noise -> modal noise

In an optical system, noise created by mode-dependent optical losses and variations in the distribution of radiant power among the modes or relative phases of the modes. Also known as speckle noise.

speckle pattern

A power intensity pattern produced by the mutual interference of partially coherent beams that are subject to minute temporal and spatial fluctuations.

SPECT

single-photon emission computed tomography

spectra -> optical spectrum

1.) Generally, the electromagnetic spectrum within the wavelength region extending from the vacuum ultraviolet at 40 nm to the far-infrared at 1 mm. 2.) The wavelength or color distribution...

spectral

Pertaining to or as a function of wavelength. Spectral quantities are evaluated at a single wavelength.

spectral bandwidth

The wavelength interval in which radiant intensity is at least 50 percent of the maximum spectral value.

spectral centroid

Average wavelength usually determined for light-transmitting devices by taking a weighted average for each wavelength of the spectral energy distribution of incident light, transmittance of the...

spectral domain optical coherence tomography

Spectral domain optical coherence tomography is an imaging technique used in medical diagnostics, particularly in ophthalmology, to visualize and analyze the internal structures of biological...

spectral flow cytometry

Spectral flow cytometry is an advanced flow cytometry technique that expands the capabilities of traditional flow cytometry by utilizing spectral information from fluorochromes to enhance...

spectral integral density

With respect to color photography, the measurement, at a given wavelength, of the way the color film modulates the radiant flux in the optical system containing the film.

spectral irradiance

Irradiance per unit wavelength interval at a given wavelength, expressed in watts per unit area per unit wavelength interval.

spectral line

A narrow range of emitted or absorbed wavelengths.

spectral line shift

A slight displacement in the position of a spectral line because of an alteration in frequency, as a result, in turn, of a cause such as the Doppler effect.

spectral luminous efficacy

Ratio of the luminous flux in a beam of radiation to the spectral radiant flux in the same beam at a given wavelength.

spectral luminous efficiency

Ratio of the radiant flux at a particular wavelength lm to that at any other wavelength l, such that both radiations produce equally intense luminous sensations. The wavelength lm is chosen so that...

spectral order (diffraction grating)

When, for example, a beam of monochromatic light passes through a diffraction grating, the emergent rays that have remained undeviated are included in the zero spectral order. The light flux in the...

spectral power distribution

The relative power emitted by a source as a function of wavelength. It determines the color-rendering properties of the source.

spectral pyrheliometer

Any pyrheliometer that has a filter placed over its sensor to limit the range of solar radiation it will detect; used to determine the distribution of solar radiation over its visible and into its...

spectral radiance

Radiance per unit wavelength interval at a given wavelength, expressed in watts per steradian per unit area per wavelength interval.

spectral repeatability

Spectral repeatability refers to the consistency and reproducibility of spectral measurements across multiple trials or instances. It is a measure of how well a measurement instrument or system can...

spectral response

Measure of a detector's signal during exposure to radiation of a constant power level and varying wavelength.

spectral series

A classification of particular regularities that occur in the spectra of many atoms.

spectral signature

A spectral signature, in the context of remote sensing and spectroscopy, refers to the unique pattern or characteristic spectral response of a material or object across different wavelengths of the...

spectral width

A measure of the wavelength extent of a spectrum.

spectral window

A wavelength region of relatively high transmittance, surrounded by regions of low transmittance.

spectrobolometer

A combination spectrometer and bolometer that is designed to measure a narrow band of radiation from a star.

spectrochemical equipment

Equipment used for chemical analysis by investigation of the spectra formed and observed in chemical activity. Of particular use are spectrographs for recording the emission spectra of substances...

spectrofluorometer

An automatic scanning instrument that is used to study a substance's fluorescence over a wide range of wavelengths. It consists of a radiation source, a grating that functions as the monochromator in...

spectrogram

A chart formed by a spectrograph; the record of the spectral range. See spectrograph.

spectrogrammetric reading equipment

Spectra can be conveniently recorded on photographic film or plates. The portions that are occupied by regions of the recorded developed images on the film or plate can be determined with some...

spectrograph

An optical instrument for forming the spectrum of a light source and recording it on a film. The dispersing medium may be a prism or a diffraction grating. A concave grating requires no other means...

spectrographic electrode

The hollow electrode used in emission spectroscopy to hold the material to be examined and, using an arc or spark source, to vaporize it in the flame.

spectrographic slits

The slits in a spectrograph that form images of spectral lines. Slits may be bilateral or unilateral, and generally close down to 0.01 mm and open up to almost a whole millimeter. The edges of the...

spectrography

The production and analysis of spectra with the use of a spectrograph.

spectroheliogram

The image of the sun produced by a spectroheliograph.

spectroheliograph

An instrument in which an image of the sun is scanned by the entrance slit of a monochromator, the exit slit simultaneously scanning a photographic plate for analysis of the solar spectral lines. If...

<
1
2
3
...
149
150
151
152
153
...
173
174
175
>

Photonics Dictionary

Need Help?