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24 terms

Photonics Dictionary: A

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automatic gain control
A method of producing an essentially constant output signal from an electronic circuit despite variations in the strength of the input signal.
automatic optical inspection
A system for automatic industrial process control or measurement, consisting of an optical module for image acquisition, a segmentation processor to isolate the image from its background, and an...
automatic power control circuit -> monitor current
In a laser diode, the photocurrent produced by a photodiode that detects the emission from the rear facet of the semiconductor chip. It can be used to provide feedback control of the forward current...
automatic profiling
In fiber optics, the use of a detector to study the range of refractive indices achieved at various wavelengths. This information is calculated electronically to establish the divergence between...
automatic recording spectrograph
A direct reading spectrograph having a photomultiplier assembly in place of a photographic plate. The output from the photomultiplier assembly is received by a microammeter or a pen recorder.
ACC
automatic current control
ADT
automatic data transmission; anthradithiophene
advanced driver assistance systems
Advanced driver assistance systems (ADAS) refers to a set of safety features and technologies designed to assist drivers in the driving process and enhance overall vehicle safety. These systems use...
AFC
automatic frequency control
AGC
automatic gain control
AIRS
automatic image retrieval system
AOI
area of interest; automatic optical inspection
APC
automatic power control; angle polished connector
APT
automatic picture transmission
ASDSRS
automatic spectrum display and signal recognition system
ASKA
automatic system for kinematic analysis
ATE
automatic test and evaluation
ATLIS
automatic tracking laser illumination system
ATR
attenuated total reflectance; automatic target recognition
auto-iris lens
A device for automatic exposure control in which a motor-driven diaphragm adjusts the aperture in response to a signal from a photocell detecting ambient light.
autofocus system
A means of adjusting the sharpness of an image automatically, with a sensor for estimating distance or contrast and a drive mechanism to adjust the lens. Active systems generate a light source to...
autoguider
A CCD sensor that provides feedback to the motion control system for a telescope, allowing the telescope to follow a particular object or section of sky automatically.
automated optical inspection
Automated optical inspection (AOI) is a technology used in manufacturing processes, particularly in electronics, to automatically inspect and detect defects or anomalies in products. AOI systems use...
AWB
automatic white balance
Photonics DictionaryA


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