Technical Articles

  1. Revealing Cotton’s Fiber Quality With Hyperspectral Imaging
    12/5/2017

    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.

  2. Understanding A Camera’s Resolution
    12/4/2017

    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.

  3. Understanding A Camera's Dynamic Range
    12/4/2017

    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.” 

  4. Achieving Standardized Measurements With BeamWatch AM
    12/1/2017

    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.

  5. Fluorescence Microscopy Technique Provides New Views Of Biological Processes
    11/29/2017

    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.

  6. Building A Do-It-Yourself Atomic Force Microscope
    11/29/2017

    Atomic force microscopes (AFMs) are versatile tools for characterizing surfaces down to the subnanometer scale. Researchers wanting to, say, map out the optical antennas they’ve inscribed on a chip, or measure the quantum dots they’ve created, can image objects at resolutions down to the picometer level by scanning an AFM over the surface. Researchers can build their own AFMs for as little as $30,000 using off-the-shelf components such as nanopositioning stages.

  7. Technology Advances Lead To CMOS Sensor With Record Resolution
    11/29/2017

    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.

  8. How Hexapod Motion Platforms Help Google Engineers Advance Cell-Phone Cameras
    11/20/2017

    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.

  9. How To Make A Good Reflected Color Measurement
    11/17/2017

    When measuring reflection from an object, it is important to consider which type of reflection is dominant, and whether some or all the reflected light needs to be collected. This article discusses the best practices for making good reflected color measurements that can be used in a wide range of optical imaging applications.

  10. Thin-Film Optical Components For Use In Non-Linear Optical Systems
    11/16/2017

    Bio-imaging and detection techniques that use non-linear optical (NLO) phenomena have led to great advancements, such as super-resolution images, label-free visualization of naturally occurring biomolecules, and greater freedom for working with in-vivo samples. Many NLO systems rely on the high peak pulse intensity of femtosecond lasers for signal generation, and demand that optical filters and mirrors integrated into these systems have an appropriate laser damage rating, and the reflective components be controlled for both group delay dispersion (GDD) and flatness. This white paper discusses the importance of choosing thin-film optical components for NLO systems to ensure optimal signal strength, resolution, and image quality.