Technical Articles

  1. Visualizing Growth In Hyperspectral Imaging: A Q&A With TruTag CTO Hod Finkelstein

    Dr. Finkelstein discussed with Photonics Online how his experience in the medtech and RF industries helped inform decisions when creating new HSI technologies. He offered insight into maintaining balance in the growth of both optical and data processing technologies for HSI, and discussed development of TruTag’s Prism Award-winning hyperspectral imaging solution.

  2. Frequently Asked Questions: Optical Thin Film Filters

    This article answers an array of frequently asked questions about optical thin film filters. It provides in-depth information on what they are, how they are created, how they perform, and what to look for when selecting an optical thin film filter supplier.

  3. Revealing Cotton’s Fiber Quality With Hyperspectral Imaging

    Hyperspectral imaging can be employed either remotely or in-process, and it is commonly used to monitor production to control product quality and output. Traditionally, hyperspectral imaging systems or cameras have been bulky, heavy, and costly. However, recent technological advances are changing that and opening the door to new opportunities in hyperspectral imaging.

  4. Understanding A Camera’s Resolution

    The resolution of an image sensor describes the total number of pixel which can be used to detect an image. From the standpoint of the image sensor it is sufficient to count the number and describe it usually as product of the horizontal number of pixel times the vertical number of pixel which gives the total number of pixel.

  5. Understanding A Camera's Dynamic Range

    Since many camera manufacturers define dynamic range from a different point of view, a distinction should be made between the “dynamic range of an sCMOS, CMOS, or CCD image sensor,” “dynamic range of an analog-to-digital-conversion,” “usable dynamic range,” and “maximum dynamic range or SNR.” 

  6. Achieving Standardized Measurements With BeamWatch AM

    The BeamWatch AM is Ophir-Spiricon’s beam monitoring system designed specifically for use in the additive manufacturing industry to provide non-interfering real-time beam measurement at the location of the working plane. This white paper delivers a comparison of results with those from the NanoScan 2, a widely-accepted scanning-slit technology, and demonstrates that the BeamWatch AM can achieve ISO-compliant measurements when correctly used.

  7. Fluorescence Microscopy Technique Provides New Views Of Biological Processes

    Fluorescence microscopy has long been a powerful tool in biological research. A form known as total internal reflection fluorescence (TIRF) microscopy has more recently been used to watch biological processes unfold in real time. By taking advantage of the ability to label individual molecules with different colors of fluorescent tags, TIRF microscopy now affords scientists a view into the complex molecular assemblies that govern cellular processes.

  8. Building A Do-It-Yourself Atomic Force Microscope

    Atomic force microscopes (AFMs) are versatile tools for characterizing surfaces down to the subnanometer scale. Researchers can build their own AFMs for as little as $30,000 using off-the-shelf components such as nanopositioning stages.

  9. Technology Advances Lead To CMOS Sensor With Record Resolution

    In the past decade, CMOS sensors have emerged as the imaging technology of choice for many applications. Today, they are not only used in almost all cell phones and mobile devices, but are also commonly found in industrial and medical cameras.

  10. How Hexapod Motion Platforms Help Google Engineers Advance Cell Phone Cameras

    An unsteady hand can ruin the most epic picture moment. The engineers at Google understand this and have taken steps to optimize the motion and image stabilization algorithms in their Pixel 2 camera. The Google Pixel 2 has been integrated with PI’s H-860 high speed hexapod system that accurately simulates motion with 6 degrees of freedom and results in pinpoint accurate crisp images.