Technical Articles

  1. No, Not That One: Imaging Systems And The ‘Other’ Fiber Optics

    Well known as an enabling technology of telecommunications, fiber optics is also playing a pivotal role in imaging. This paper takes a closer look at the “other” fiber optics, illuminating the special qualities that make it the best solution for some of imaging’s most challenging problems and environments.

  2. Testing High Volume LED Luminaire Builds

    LED luminaires offer better and more uniform illumination than other light sources, and deliver the ability to tailor the color of the LEDs to the correct mixture for individual applications. The lower operating costs of LED luminaires drive an exponentially growing demand for them in consumer and commercial markets. This increased demand requires an adaptation to improved quality testing methods that can provide superior measurements and not slow down the process of production. This application note discusses the use of Ophir Photonics’ FluxGage for testing luminaires rated from 1,000 to 40,000 lumens on the production line.

  3. Assuring Correct Metallurgy In Direct Laser Melting

    High quality 3D laser printed processes require a laser that delivers the correct amount of power that is distributed correctly and focused at the correct location. To ensure consistent and structurally sound parts and correct metallurgy, the right parameters should be directly measured before and after any critical part is made in direct laser sintering. This application note presents how Ophir Optics’ BeamCheck system is able to measure critical laser beam parameters for laser-based additive manufacturing.

  4. Math, Magic And MTF: A Cheat Sheet For The Vision System Community

    MTF is the best proxy for lens performance, but the math behind it and the graphs that depict it often obstruct understanding. This paper demystifies MTF, arming vision system decision makers with the knowledge they need about it to choose the right lens every time.

  5. Hot Biology: Investigating The Thermal Physiology Of Birds And Mammals

    It may be surprising to realize that many details of the thermal biology of animals are unknown. To try and fill the gaps in this knowledge, researchers at the Institute of Biodiversity, Animal Health and Comparative Medicine at the University of Glasgow, Scotland are using FLIR thermal imaging technologies to learn as much as possible in order to help animals in the long run.

  6. FLIR Thermal Science Cameras Support Medical Research

    Tissue auto-fluorescence spectroscopy is utilized in biomedical research for differentiating between normal and diseased tissue. This technique measures the intrinsic light emissions from biological agents upon excitation by a light source. However, the relationship between auto-fluorescence and temperature has not been well defined. In order to better understand this relationship, researchers are currently conducting experiments with the help of a FLIR thermal imaging camera.

  7. FLIR Thermal Imaging Cameras Monitor The Quality Of Vessel Constructions

    Shipbuilding requires advanced, non-destructive testing methods for ensuring the quality of the ship's construction, and therefore the quality of the fleet. In response, research on the use of thermography for the construction of mobility vehicles is being carried out at the Masdar Institute of Technology in Abu Dhabi. This technology is useful to shipbuilding via its secure implementation and excellent results. This article describes how thermal imaging is used for things like vessel construction, surface inspection, detection of undercoat corrosion, quality control, and more.

  8. Assessing Infrared Spectrum Hyperpixel Array Imagers For Measuring Temperature In Additive And Subtractive Manufacturing

    Accurate non-contact temperature measurement is important to many manufacturing processes such as additive and subtractive manufacturing. As an alternative to the challenging method of single wavelength thermography, hyperpixel array hyperspectral imaging can acquire images at multiple (generally three or more) optical wavelengths. This white paper discusses the use of infrared spectrum hyperpixel array imagers in additive and subtractive manufacturing temperature measurement, the issues that are involved, and the results of multiple analyses on the method.

  9. Nordic District Heating Networks Monitored From The Sky With Thermal Imaging

    According to some researchers, district heating is the cheapest method for a city to make cuts on carbon emissions. District heating is a system that distributes hot water or steam to a centralized residential or commercial location through an underground network of pipes. Maintaining a large district heating network can be a difficult task, so to help large Scandinavian cities to effectively monitor and maintain their district heating networks, the company Termisk Systemteknik has developed a district heating scanning system from the sky, based on thermal imaging cameras from FLIR Systems.

  10. Short-Wave Infrared Cameras In Semiconductor Inspection Applications

    The semiconductor industry has grown to cover a wide variety of applications such as those with memory integrated circuits for PCs or mobile devices, solar cells, and many more electronic devices. Within the semiconductor industry, SWIR cameras can be used for inspecting the quality of pure semiconductor material after ingot growth, the alignment of a saw blade or laser, failure analysis, and other semiconductor inspection applications. This white paper discusses several applications of SWIR (short-wave infrared) cameras within semiconductor inspection applications, especially those that rely on the capability of SWIR cameras to see through semiconductor materials, such as silicon.