Sensors & Detectors

SENSORS & DETECTORS CASE STUDIES AND WHITE PAPERS

  • Standoff Midwave Infrared Hyperspectral Imaging Of Ship Plumes
    Standoff Midwave Infrared Hyperspectral Imaging Of Ship Plumes

    Characterization of ship plumes is very challenging due to the great variety of ships, fuel, and fuel grades, as well as the extent of a gas plume. In this work, imaging of ship plumes from an operating ferry boat was carried out using standoff midwave (3-5 m) infrared hyperspectral imaging. Quantitative chemical imaging of combustion gases was achieved by fitting a radiative transfer model. Combustion efficiency maps and mass flow rates are presented for carbon monoxide (CO) and carbon dioxide (CO2). The results illustrate how valuable information about the combustion process of a ship engine can be successfully obtained using passive hyperspectral remote sensing imaging.

  • LDE/LME Series – Superior Immunity To Humidity

    This application note experimentally compares LDE/LME differential pressure (Δp) sensors from First Sensor other sensors that use the same (thermal-anemometer-based, non-membrane) sensing principle.

  • LDE/LME Series – Superior Immunity To Dust

    This application note experimentally compares LDE/LME differential pressure (Δp) sensors from First Sensor other sensors that use the same (thermal-anemometer-based, non-membrane) sensing principle.

  • Frequency Comb Research Advances Using Tunable Diode Lasers
    Frequency Comb Research Advances Using Tunable Diode Lasers

    The discovery of the optical frequency comb and the breakthrough work of Hänsch and Hall in refining the frequency comb technique have revolutionized the field of scientific metrology. In this application note, we will look more closely at how the so-called “microcombs” are generated and what the role of external cavity diode lasers (ECDLs) is in the microcomb generation process. We will briefly discuss how the microcomb is evolving into a compact, versatile tool with increasing application, for example, in the field of molecular spectroscopy. Although still maturing, the field of microcombs has the potential to transform various other disciplines, leading to compact comb generation platforms with numerous applications.

  • Airborne Thermal Infrared Hyperspectral Imaging For Mineral Mapping
    Airborne Thermal Infrared Hyperspectral Imaging For Mineral Mapping

    In order to illustrate the benefits of thermal infrared hyperspectral imaging (HSI) for mineral mapping, an airborne survey was carried out over an open-pit mine in the Thetford Mines (Qc, Canada) area. The results show how high spectral resolution data facilitates temperature emissivity separation (TES) and atmospheric correction in order to retrieve a thermodynamic temperature map of the area and its associated spectral emissivity datacube. Mineral mapping of various minerals such as lizardite, serpentinite, and quartz was achieved through linear unmixing of the emissivity data using reference emissivity curves found in spectral libraries. The results illustrate the potential of TIR HSI for airborne mapping of silicate minerals.

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SENSORS & DETECTORS PRODUCTS

Ultra Compact SMD Photodiode Package: AD230-8 SMD Ultra Compact SMD Photodiode Package: AD230-8 SMD

First Sensor presents a new ultra compact flat no-leads package (QFN, ODFN) for its APDs and PIN photodiodes. The plastic encapsulated reflow solderable SMD package features a footprint of only 4 mm² and very good resistance to moisture (MSL3). Applications include laser distance meters, rangefinders, LIDAR, high speed photometry, optical fiber communication, and more.

Avalanche Photodiodes with Enhanced NIR Sensitivity – First Sensor´s Series 9 Avalanche Photodiodes with Enhanced NIR Sensitivity – First Sensor´s Series 9

These avalanche photodiodes are optimized for 760-910 nm with QE>80%. Selected chips are also available with a bandpass (BP) filter. The series provides fundamental technology for the development of arrays with multiple individual sensors, ex. 8, 16, or 32 pixels. Optimized for 900 nm, these 8 and 16 Element Avalanche Photodiode Arrays from First Sensor have good uniformity, high-speed, low noise and a low slope multiplication curve.

Repeatability and Reliability in UV Laser Systems: SXUV300C Photodiode Repeatability and Reliability in UV Laser Systems: SXUV300C Photodiode

Opto Diode’s SXUV300C is a photodiode with a 331 mm2 active area and the ability to detect energy from UV wavelengths of 1 nm to 1000 nm. It’s been designed to maximize measurement repeatability and reliability in new or existing high-powered UV laser monitoring systems.

Wide Temperature Range Infrared Emitter: OD-850WHT Wide Temperature Range Infrared Emitter: OD-850WHT

The new OD-850WHT is a wide temperature range infrared (IR) emitter from Opto Diode designed to simplify thermal design for night vision, aircraft, and vehicle light markers for covert operations in military applications. These emitters also have thermal improvements ideal for high temperature industrial photoelectric controls used in petroleum refining, chemical processing, and power generation and other industrial applications.

PowerMax-Pro Sensor PowerMax-Pro Sensor

The PowerMax-Pro Sensor from Coherent is the newest device in sensor technology designed to enhance productivity and quality while improving measurement speed. This sensor features a technological advancement in laser power sensing that combines the response speed of a semiconductor photodiode with the broad wavelength sensitivity, dynamic range, and laser damage resistance of a thermopile.

Avalanche Photodiodes with High Red and Green Light Sensitivity: 8r Series Avalanche Photodiodes with High Red and Green Light Sensitivity: 8r Series

First Sensor presents the Series 8r silicon avalanche photodiodes (APDs) with high sensitivities in the red and green wavelength range. The APDs feature a flat gain curve where the internal amplification rises slowly with the applied reverse bias voltage. Therefore, the Series 8r allows for easy and accurate adjustments of high gain factors. The photodiodes are ideal for applications which demand fast rise times and low capacitance.

IR Detectors for Minimizing Out-Of-Band Radiation: SCD-B Series IR Detectors for Minimizing Out-Of-Band Radiation: SCD-B Series

Lead salt detectors were first used for infrared imaging applications in military research during the 1930s. Since their introduction, they’ve proven to be an effective infrared photodetector for a wide range of analysis, spectroscopy, high-speed infrared imaging, and defense applications. They’re not without their shortcomings, however.

Thermoelectric Cooled NIR PMT: H10330B-25/45/75 Thermoelectric Cooled NIR PMT: H10330B-25/45/75

Hamamatsu’s H10330B series of NIR-PMTs (near infrared photomultiplier tubes) feature vacuum sealed-off thermal insulation technology, high sensitivity, a 0.9ns rise time, operability in 20 minutes from being switched on, a large detection area (18mm for collimated light), and an HV power supply with an interlock function.

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SENSORS AND DETECTORS SUPPLIERS

  • PIXELTEQ
    PIXELTEQ

    PIXELTEQ provides OEM spectral sensing and imaging products, patterned optical filters and custom electro-optical devices for a variety of aerospace, biomedical, industrial, scientific and security applications.  At the heart of each multispectral device is an array of pixel-level spectral filters purpose-built for applications.

  • CMC Electronics
    CMC Electronics Esterline CMC Electronics has achieved an international reputation for innovation and excellence in the design and manufacture of electronics products for the aviation market.
  • Xenics
    Xenics

    Xenics is a well established and rapidly growing high-tech company about to enter exciting new fields of IR products and applications, serving the markets with excellent products and a strong technology background.

  • Excelitas Technologies
    Excelitas Technologies

    Excelitas Technologies is a global technology leader focused on delivering innovative, customized optoelectronics and advanced electronic systems to a global customer base of leading OEMs seeking high-performance, market-driven technologies.

  • LASER COMPONENTS
    LASER COMPONENTS LASER COMPONENTS is a family-owned business that was founded by Mr. Günther Paul in Germany in 1982. With over 130 employees worldwide, LASER COMPONENTS has specialized in the development, production, and distribution of components and services in the laser and optoelectronics industry.
  • Sensors Unlimited - UTC Aerospace Systems
    Sensors Unlimited - UTC Aerospace Systems

    UTC Aerospace Systems (Sensors Unlimited Products), is the world’s leading manufacturer of indium gallium arsenide (InGaAs)-based imaging products. As renowned experts in shortwave infrared (SWIR) imaging, Sensors Unlimited, Inc. introduced the world to the concept of imaging in the shortwave IR spectrum with simple, compact, and uncooled cameras.

  • First Sensor AG
    First Sensor AG

    First Sensor AG (Formerly Silicon Sensor) has over 20 years of experience in the development and manufacture of individual sensor solutions offering highest levels of precision and reliability.

  • Marktech Optoelectronics
    Marktech Optoelectronics Marktech Optoelectronics is an industry leader in Optoelectronic component technology, products and solutions. Our product engineering and manufacturing staffs continue to develop and introduce high reliability leading edge optoelectronic products to the marketplace.
  • Hamamatsu Corporation
    Hamamatsu Corporation

    Photomultiplier Tubes|Arc Lamp|Photo Multiplier|Spectroscopy Systems

  • Opto Diode, An ITW Company
    Opto Diode, An ITW Company

    Opto Diode Corporation is a world supplier of reliable, high quality infrared (IR) LEDs and custom LEDs in the visible range. Since 1981, we have produced standard TO-packaging and custom housing LEDs in our U. S. facility in Southern California, maintaining the highest standards with our in-process quality control and testing systems...

  • IRCameras
    IRCameras

    IRCameras provides the most technologically advanced infrared imaging systems available for scientific, industrial and military applications. In addition to our extensive line-up of standard commercial cameras and IDCAs, we offer custom design and build services to meet unique optical, packaging and space-constrained requirements

    IRCameras is a subsidiary of Santa Barbara Infrared, a long-time leader in the design and manufacture of electro-optical (E-O) test instrumentation. SBIR, in turn, is part of HEICO Corporation, a technology-based aerospace company that’s been engaged in niche market segments within the aerospace, aviation and electronics industries for more than 40 years. Together we are uniquely positioned to advance development of thermal imaging technologies, and to commercialize these technologies for a wide range of applications including:

    • nondestructive testing
    • predictive maintenance
    • online process monitoring and control
    • scientific research
    • target signature
    • security and surveillance

    We offer a range of purchase, rental and lease options, and a full line of accessories including software, data acquisition systems and optics. Our goal is to make your infrared imaging program a complete success. We welcome the opportunity to learn more about your requirements, and to explore how we might be able to assist in creating and supporting the optimal program to meet your particular infrared imaging requirements.

  • Voxtel, Inc.
    Voxtel, Inc.

    Voxtel develops truly disruptive technologies that enable our customers to design, build, and deploy next-generation optoelectronic systems. We maintain two divisions: Voxtel Optoelectronics, headquarted in Beaverton, Oregon, and Voxtel Nanophotonics in Eugene, Oregon.

SENSORS & DETECTORS NEWS

  • New Fog Chamber Could Help Improve Optics, Sensing Tech

    Researchers say the chamber will help develop and validate cameras’ and sensors’ abilities to penetrate fog, knowledge that could lead to improved surveillance at sites. The chamber also could be used to answer fundamental optics questions, which in time could lead to improved security camera lenses and medical imaging equipment, safer aircraft landings and better vision for drivers in fog.

  • Gentec-EO To Launch Handheld, Touch Screen Laser Power Meter

    Gentec Electro-Optics, Inc. will show its new Pronto Handheld Laser Power Meter, capable of measurements up to 250 W,  for the first time at the Laser World of Photonics show in Munich in June, and the Pronto-250 and Pronto-250-CO2 will be available for delivery in July 2015.

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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.