Designing Athermal Lenses For Long-Wave Infrared Systems

Due to advances in material and manufacturing technologies, the vast majority of lenses used on long-wave infrared (LWIR) cameras are simple: One- or two- element designs with an emphasis on low-cost manufacturing. One effect of this is that most of these cameras are supplied without any means for the user to focus them. This means that the lens must stay in focus over a broad range of temperatures. Since the standard temperatures range for use outdoors is -40°C (really cold) to +85°C (much too hot!), this can provide some interesting design challenges.

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Illuminance sensor (S11153-01MT)

Hamamatsu’s S11153-01MT illuminance sensor offers spectral sensitivity close to the human eye, and it can be operated within a wide temperature range from -40 deg. Celsius to 100 deg. Celsius. It features excellent linearity, and is suitable for lead-free reflow (RoHS compliant). 

  • Super HeatBuster®  Hot Mirror
    Super HeatBuster® Hot Mirror The Super HeatBuster® Hot Mirror coatings are multi-layer, all dielectric thin film coatings that are used for managing infrared heat generated by high wattage optical light source systems, and are designed to separate the infrared heat from the visible light energy...
  • InSb MWIR Camera: Cruz 640-15
    InSb MWIR Camera: Cruz 640-15

    The Cruz 640-15 is a 15μ pixel pitch and 640x512 pixel format using an InSb (from SCD USA) detector and FLIR 0002 ROIC. This camera has an NEΔT of 30 milikelvin. This camera is ruggedized and tested to Mil-STD-810G and is qualified for gimbals and pan and tilt applications.

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  • Amazon’s New Smartphone Boasts High-End RF And Imaging Components
    Amazon’s New Smartphone Boasts High-End RF And Imaging Components

    On July 25, Amazon released its first smartphone, and it didn’t take long for the internal components of the device to get leaked.

  • 4 Electronic Design Requirements Of The System-Integrated Soldier
    4 Electronic Design Requirements Of The System-Integrated Soldier

    Perhaps most famously portrayed in Robert Heinlein’s Starship Troopers (1959), the idea of the “future soldier” has been around for decades. As rehashed in countless science fiction films and video games, the stereotypical future soldier is equipped with a protective exoskeleton, enhanced sensory equipment, seamless communication systems, and advanced weaponry. While the concept once seemed implausible, there are many real-world projects under way focused on realizing those seemingly fictitious warfighter capabilities — by integrating a plethora of diverse electronic subsystems into a cohesively operational suit.

  • The Top 5 Technologies From DSS 2014
    The Top 5 Technologies From DSS 2014

    With more than 450 companies at this year’s event and only three days to explore, it was an almost overwhelming task to try and take in all of the technology on display. Regardless, I did my best, and here is my list of the top five most exciting technologies I caught at the show.

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

  • Spectral Sensing Kit For Developers
    Spectral Sensing Kit For Developers

    At Optics and Photonics 2014, Bill DeCosta with Ocean Optics introduced his company’s new STS developer kits. Watch the video for an up close look as well as some in depth information on the STS spectrometer.

  • Low Cost Measurement And Analysis Solutions
    Low Cost Measurement And Analysis Solutions

    Applications engineer Kimberly Quinones with StellarNet closed out Photonics Online's Optics and Photonics 2014 video coverage by discussing their UV/VIS/NIR miniature and low-cost spectrometers, integrating spheres, and other solutions for applications involving LED measurements, light measurement, Raman analysis, raw material identification, optical metrology, and more.

  • SWIR Cameras, Cores, And Export License Solutions
    SWIR Cameras, Cores, And Export License Solutions

    Herve Copin with Xenics kicked off the last day of Optics and Photonics 2014 by discussing two of his company's SWIR camera offerings: The Bobcat 640 for waste sorting, food inspection, failure analysis, and semiconductor inspection; and the Rufus 640, a SWIR camera that can operate in both extreme day and night conditions.

  • Compact Goniometer For Laboratories And Production
    Compact Goniometer For Laboratories And Production

    In this video from Optics and Photonics 2014, Rachel Ulanch with Trioptics discusses some background information on her company and introduces the PrismMaster®150 — a compact, high-precision goniometer for optical workshops and production environments.

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Sierra-Olympic’s Vinden CZ is a thermal imaging camera with a 12x zoom factor for 640 x 480 resolution and a 6x zoom factor for 320 x 240. It’s well suited for system integrators in the security and surveillance space, or any other project requiring advanced continuous zoom thermal imaging capabilities.

Learn More.


Electronic Military & Defense was developed as a resource for engineers, program managers, project managers, and other professionals involved in the design and development of electronic and electro-optic systems for a wide range of defense and aerospace applications. Check out the digital edition of our latest issue for exclusive editorial on wearable antennas for military applications, countering EMI threats, biological and chemical threat detection, advances in optical sensing, and more.

Sign up to receive a free copy of the 2014 edition!


Krell Technologies, Inc.

Krell Technologies, Inc.

Founded in 1995, Krell Technologies introduced the industry's first portable fiber optic connector polisher with singlemode performance.

Teledyne Nova Sensors

Teledyne Nova Sensors

Teledyne Nova Sensors is expert in rapid prototyping and manufacturing of IR cameras optimized for size, weight, and power along with rugged environments.

Raptor Photonics Limited

Raptor Photonics Limited

Raptor Photonics Limited, founded in 2006, is a global leader and manufacturer of high performance, industrial-grade and rugged low light digital & analogue cameras. Raptor specialises in complete cameras and core engine solutions using EMCCD, Scientific CMOS, SWIR and Vis-SWIR sensor technology.

II-VI Optical Systems

II-VI Optical Systems

II-VI Optical Systems is a premier solutions provider for the design, development, and production of integrated optical systems for advanced applications. From prototypes to production, we design, manufacture, assemble, and test precision optical systems and components-including visible, infrared, and laser-based systems and subassemblies.

Photron, Inc.

Photron, Inc.

Photron was founded in 1974 to provide manufacturing, sales and service of professional film and video equipment and photo-instrumentation

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.

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  • Miniature Camera Modules For Visualizing Micro Invasive Surgery

    The miniaturization of camera modules allows visualization inside the body with ever smaller incisions. These miniature digital camera modules — hardly bigger than a grain of salt — enable novel medical tools, where visualization is possible for the first time and where previous procedures had to be done completely blind. In this article, AWAIBA, a reputed leader in miniature camera modules as small as 500 mm side length, provides an overview of these miniaturized cameras and explores potential new applications for the technology.

  • Cherenkov Emission Imaging And Spectroscopy Utilizing Isotopes And A Linear Accelerator

    There are linear accelerators (LINACs) employed in radiation oncology that produce radiation in pulsed microseconds-long bursts, generated by the accelerator waveguide. By taking advantage of a LINAC’s inherent pulsed operation, time-gated detection of Cherenkov radiation is possible, significantly improving the ratio of signal to ambient light. Recently, a research group at Dartmouth College and Dartmouth-Hitchcock Medical Center in New Hampshire led by Dr. Brian Pogue has investigated fluorescence and absorption spectroscopy methods using pulsed LINAC-induced CES2, under ambient room lighting conditions. An overview of some of their work is provided in this application note.

  • How To Assess Thermal Camera Range For Site Design

    When laying out a site design for surveillance using currently marketed uncooled thermal cameras, it is important to understand the coverage capability of the cameras under evaluation in terms of field of view and range. Accurately gauging range performance from the onset of the site design may allow one to avoid unintended and pricey rework costs later. The following white paper explores the various determinants that are needed for thermal camera range capability assessment.

  • How To Push Conventional 2-Sided Contacted Solar Cells To The Max

    Of the silicon solar cells commonly manufactured today, 90 percent are based on screen-printed Ag front contacts and an aluminum-BSF (Back Surface Field) as rear passivation. Their success lies in the relatively low manufacturing cost and straightforward production technology. But they also have a downside: the typical efficiency on monocrystalline silicon is limited to about 19 percent. To overcome this hurdle, alternative cell concepts are being developed, such as PERx-type solar cells, promising efficiencies of 22 percent and higher. Researchers at imec have developed n-PERT solar cells, a specific version of a PERx-type cell with unique properties, achieving as much as 21.5 percent with a clear roadmap to reach 22.5 percent.  

More Articles


  • Winning By Losing
    Winning By Losing

    What started out as a mathematical oddity, has now become a new kind of laser technology. Two years ago, physicists at TU Wien predicted a paradoxical laser effect: Under certain conditions, a laser can be switched on not by supplying it with more energy, but by taking energy away from the laser.

  • OSA Kicks Off International Year Of Light Educational Efforts At Frontiers In Optics 2014

    The Optical Society (OSA) recently announced that its annual meeting, Frontiers in Optics (FiO) 2014, taking place next week in Tucson, Arizona, USA, will serve as the launch for its extensive educational outreach associated with the 2015 International Year of Light (IYL).

  • Tiny "Nanoflares" Might Heat The Sun's Corona
    Tiny "Nanoflares" Might Heat The Sun's Corona

    Today, a team led by Paola Testa of the Harvard-Smithsonian Center for Astrophysics (CfA) is presenting new clues to the mystery of coronal heating using observations from the recently launched Interface Region Imaging Spectrograph (IRIS). The team finds that miniature solar flares called "nanoflares" - and the speedy electrons they produce - might partly be the source of that heat, at least in some of the hottest parts of the Sun's corona.

  • Optics And Photonics Technology Leaders, Researchers And Companies To Convene At OSA’s Annual Meeting, Frontiers In Optics 2014

    Innovations from more than 600 scientific, technical and educational presentations will be highlighted during The Optical Society’s (OSA) 98th Annual Meeting, Frontiers in Optics (FiO) 2014, being held Oct. 19 - 23 in Tucson, Arizona, USA.

  • Integrated Circuits With Silicon Hybrid Plasmonic Waveguides

    Traditional designs for silicon (Si) photonics often use a metal strip, placed above thick upper-cladding on top of a Si core, as a micro-heater. Such designs, however, have low heating efficiencies, slow responses, and small thermal dynamic ranges.

More News


SPIE Photonics West 2015

February 7 - 12, 2015
San Francisco, CA

IS&T / SPIE Electronic Imaging 2015

February 8 - 12, 2015
San Francisco, CA

SPIE Medical Imaging 2015

February 21 - 26, 2015
Orlando, FL

SPIE Advanced Lithography 2015

February 22 - 26, 2015
San Jose, CA
More Events




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