photodetector

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photodetector

(foh-toh-di-tek -ter) Any electronic device designed to respond to, i.e. detect, photons of light or other radiation. Examples include the photomultiplier and CCD.

Collins Dictionary of Astronomy © Market House Books Ltd, 2006

photodetector

[¦fōd·ō·di′tek·tər]

(electronics)

A detector that responds to radiant energy; examples include photoconductive cells, photodiodes, photoresistors, photoswitches, phototransistors, phototubes, and photovoltaic cells. Also known as light-sensitive cell; light-sensitive detector; light sensor photodevice; photodevice; photoelectric detector; photosensor.

photodetector

A device that senses light. It uses the principle of photoconductivity, which is exhibited in certain materials that change their electrical conductivity when exposed to light. See photoelectric, photocell and photodiode.

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References in periodicals archive ?

To solve this issue, angle diversity based optical photo detector is proposed to mitigate the LOS interference.

Potentials and challenges of light fidelity based indoor communication system

This photo detector allows PASCAL to constantly test and monitor the laser power coming from the output beam.

FPGAs make retinal disease treatment faster and safer: medical and electronics technologies join forces to treat retinal disease with 100% reliability

The SP8053 features 20 photo detector elements, 130MHz RF and fast channel bandwidth and 10ns settling times.

SIPEX UNVEILS PHOTO DETECTOR IC OPTIMIZER

Because they are open-ended, no distortion is introduced into the path of an infrared light beam and there is no interference with the reception of a photo detector. Plus, intrusive refracted light is reduced from entering the photo detector diode when the black-colored mount is used.

Clip mounts increase LED viewing angle

Its major components are a laser diode, a photo detector diode array, beam shaping and splitting optics, and a voice coil controlled lens that can be moved up and down for focus and sideways for fine tracking control.

Challenges Of CD-RW/DVD Combo Drive Design

Since the sensitivity of beam detectors is proportional to the distance between the source and the photo detector, it is difficult to fit a useable beam inside a single smoke alarm for residential use.

Maturing of the smoke alarm

There, a photo detector converts the light into an electrical signal, and a microprocessor performs a spectral analysis, which indicates the level of octane and MBTE present in the sample.

Monitor helps refineries say no to knocks

The most common channelizer of this type is a laser, which uses a Bragg cell and photo detector outputs as shown in Figure 3.

Channelizers and frequency encoders

This system will implement the application of photo cells as a photo detector to absorb the illumination of LED and turn it into electricity.

Experimental works on photocell based visible light communication for audio signal transmission application

"A large part of why we are doing this is not to invent a photo detector, but to understand the processes involved in controlling carbon nanotube devices," said Leonard.

Scientists construct carbon nanotube device that can detect colors of the rainbow

Nanotech firm Planet82 Inc., Seoul, Korea, announced its Single Carrier Modulation Photo Detector (SMPD), which uses nanotechnology to enable cameras to take high-resolution photos or video in the dark--without a flash.

Nanotechnology-based image sensor takes digital pictures in the dark, without a flash

Sipex Corporation (NASDAQ:SIPX), has debuted the SP8053, a photo detector IC specially designed for DVD and CD writers that utilize twin laser modules.