Sensors & Detectors

SENSORS & DETECTORS CASE STUDIES AND WHITE PAPERS

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History And Development Of EMCCD Technology – What Is Gen III?
The earliest versions of EMCCD (Electron Multiplying CCD) sensors offered a new dimension in imaging that eliminated read noise from an image sensor. This application note provides a comparison between the first, second, and third generations of EMCCD technology.  Continue Reading..
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Using Ophir’s IS1.5VIS-FPD-800 Multi-Functional Integrating Sphere For VCSEL Measurements
Ophir’s IS1.5-VIS-FPD-800 is a multi-functional sensor that offers several advantages in a single instrument for measuring VCSEL’s. The sensor includes precision photodiodes for calibrated average power measurements, fast measurements for pulse shape characterization on an oscilloscope, and an SMA fiber optic adapter for easy connection to a spectrometer.  Continue Reading..
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Thin-Film Interference Filters For LIDAR
LIDAR is used for obstacle avoidance in autonomous vehicles, urban planning, security, infrastructure development, and other applications. This app note details how high-performance, ultra-narrowband interference filters improve LIDAR signal-to-noise ratios in specific applications.  Continue Reading..
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Foreign Object Detection In Food Inspection And Sorting
Food inspection, in connection with automated sorting and classification methods has become a major field of application for advanced image capture systems and infrared cameras. This case study tells how Xenics' line scan SWIR camera Lynx is used for copmlex imaging tasks.  Continue Reading..
On The Road To Self-Driving Cars
On The Road To Self-Driving Cars
Vehicle-environment sensor technology will play a major role in the next step of autonomous vehicle technology. This article offers in-depth information on the many types of sensor technologies used in self-driving cars and where they are headed in the future.  Continue Reading..
A LiDAR Designer’s Guide To Sensor Technologies For Automotive/Mobility Systems
A LiDAR Designer’s Guide To Sensor Technologies For Automotive/Mobility Systems
How design engineers for original equipment manufacturers (OEMs) of LiDAR systems can choose between differing sensor technologies.  Continue Reading..
The Race To The Starting Line: Edge-Emitting Diode Lasers vs. VCSELs For The Automotive Lidar Market
The Race To The Starting Line: Edge-Emitting Diode Lasers vs. VCSELs For The Automotive Lidar Market
The competition to be the leading diode laser source for automotive lidar is not a race to the top, but rather a race to the starting line. Before reaching the goal to implement lidar ADAS in consumer vehicles by 2020, there must be at least one year of certification and testing before going to market.   Continue Reading..

SENSORS & DETECTORS PRODUCTS

The Ophir® L40(500)A-LP2-DIF-35 is a compact, high damage threshold laser power/energy sensor capable of measuring up to 4kW without the need for water cooling. The Ophir® L40(500)A-LP2-DIF-35 can measure CW lasers up to 500W and pulsed lasers up to 2kJ. The compact design makes it easy to place between optical components when troubleshooting a beam path. The sensor can handle large, unfocused beams of 35mm diameter, as well as narrow, high density beams down to 1mm @ 1kW.

The Ophir® L2000W-PF-120 is a water-cooled Laser Power/Energy Sensor designed for measuring large pulsed lasers. This thermal sensor measures powers from 1 W to 200 W and energies form 6 J to 6000 J over the spectral range of 0.3 µm to 2.2 µm. The sensor features a large 120 m aperture to accommodate for high energy densities and short pulses.

Canon’s 35MMFHDXSB sensors are designed with deeper wells, resulting in an almost 45% increase in quantum efficiency (QE) at 800 nm verses the standard 19 µm pixel size sensor. Featuring 19µm pixel sizes available in monochrome (35MMFHDXSBM) or with a specialized RGB-NIR color filter array (35MMFHDXSBI), these CMOS sensors allow for expanded possibilities in a wide range of applications.

Canon’s 2U250MRXSAA CMOS sensor offers 250 MP resolution capable of capturing detail 125 times greater than in full HD resolution at a fast frame rate of 5 FPS. This APS-H format sensor leverages a square pixel arrangement of 1.5 µm x 1.5 µm pixels with progressive reading of 1.5 µm pixels across 16 digital output channels to handle the enormous amount of image data created by roughly 250 million effective pixels.

SENSORS & DETECTORS VIDEOS

  • Achieving HD, Full Color Video In Low Light

    On the last day of SPIE’s 2016 DCS exhibition in Baltimore, Kevin Fogarty with Canon showed us a 19 micron pixel pitch sensor that can achieve a full color and high definition image in extremely low light environments.

  • How To Specify Optical Coatings For Sensor Applications

    This year at SPIE’s DCS exhibition, Donna with DSI gave us a quick on-location hello from the show floor before turning it over to principle investigator Kevin Gibbons so that he could offer some advice on what you should consider before determining an optical coating’s specifications for sensing applications.

  • Multi-Spectral Imaging And Sensing

    Marco Snikkers wrapped up our Photonics West 2016 coverage by introducing us to a pixel sensor that acts as an 8-channel spectrometer for biomedical, fluorescence marking, and colorimeter applications, as well as a multi-spectral camera that can monitor specific wavelengths in real-time.

  • Lowering Dark Current, Defects, And Bad Pixel Counts In Imaging Detectors

    Sensors Unlimited — UTC Aerospace Systems cut the ribbon on their new facility on September 17th, 2014. Doug Malchow spent a few minutes with us explaining how the move to a bigger and better place has already resulted in better quality imaging detectors with lower defects, lower bad pixel counts, and much lower dark current.

  • Sensors For A Diverse Range Of Applications

    Jeff Eng, applications engineer with Hamamatsu, shows us a MEMS FTIR engine for IR spectroscopy instruments that works in applications involving gas sensing, materials analysis, and point of care devices. He also introduces us to 2D InGaAs image sensors for thermal imaging monitors, NIR image detection, and foreign object detection; compact radiation detectors; and more.

  • 12 Micron Camera Core And Silicon PIN Quadrant Detector For Sensing Applications

    Excelitas and Qioptiq have joined together to provide custom optics manufacturing and a wide array of sensor offerings for various applications.

  • New Detector For Beam Position Monitoring, UV Scanners, And Inspection Tools

    Opto Diode’s national sales manager Stan Duda kept us up to date on some new developments at Opto Diode. Watch the video to learn more about a new EUV compatible position sensing detector covering the 0.1 nm to 400 nm spectral range.

SENSORS / DETECTORS ABOUT DOCUMENT

LIGHT SENSORS & DETECTORS
A light sensor is a device senses or detects light. Various available kinds of light sensors and detectors function in different ways to give required results.
Active pixel sensors which are image sensors comprises of an integrated circuit with a number of pixel sensors. Each individual pixel has a light sensor as well as an active amplifier.
Charge-coupled devices (CCD)
These are applied in recording of images in astronomy, digital cinematography and digital photography.
Chemical detectors
A silver halide molecule is split into an atom of metallic silver and a halogen atom; the photographic developer causes adjacent molecules to split similarly. An example is a photographic plate.
Cryogenic detectors
They are sensitive enough to measure and determine the energy of single x-ray, visible and infrared photons.
Optical detectors
They are normally quantum devices where individual photons produces a discrete effect when exposed to light. This makes Optical detectors to behave like thermometers by responding solely to the heating effect of the incoming radiation.
Photo resistors or Light Dependent Resistors (LDR)
They change resistance according to light intensity. The light then can be measured or determined by measuring the resistance.
Photovoltaic cells or solar cells
When Illuminated they produce a voltage and supply an electric current. Which means the level of illumination is directly dependent on the amount of light being supplied.
Photomultiplier tubes
They contain a photocathode that emits electrons when illuminated. A chain of diodes then can be used to amplify the electrons.
Photo tubes
These contain a photo cathode which when illuminated emit electrons making the tube to conduct an electric current that is proportional to the light intensity.
Proximity Sensors
Has two photodiode arrays which convert light into current; one photodiode array responds to ambient light and the other responds only to infrared light; when joined with an infrared LED, this second LED array can operate as a proximity sensor.
Ambient Light Sensing Application
Ambient light sensors are incorporated in various laptops as well as cell phones to detect the lighting in the surrounding environment and appropriately adjust the backlight of the screen.