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Integrating Sphere Fundamentals and ApplicationsAn integrating sphere collects electromagnetic radiation from a source completely external to the optical device, usually for the purpose of flux measurement or optical attenuation. Newport’s general purpose spheres (GPS) are designed as...
Enhancing Laser Performance: Top 5 Critical Measurement ScenariosWith all of the data being generated, it is sometimes easy to "lose focus" on why laser measurements need to be taken. There are five scenarios in a laser's lifecycle where taking measurements are vital, both to the process, which the laser is being...
Infrared Camera Accuracy and Uncertainty in Plain LanguageHow accurate are thermal imaging cameras, and how are they calibrated? Understanding infrared camera accuracy and sensitivity can help clarify the value of well-calibrated thermal imaging cameras. In this paper, we use layman’s terms to explain how...
Apples to Apples: Which Camera Technologies are Best for Beam ProfilingAn in-depth look at the evolution of commercial camera technologies and their use in measuring laser beams. The accuracy of beam width measurements varies depending on signal-to-noise ratios and baseline correction. In Part 1, we cover modern camera...
High Precision Lens Assembly with Alignment Turning MachinesIn recent years, alignment turning technology has experienced some key developments. Progress has been made with regard to aspheres, cylindrical surfaces or "best fit" centration of lens groups. It has also been possible to significantly increase...
LIDAR Guns, Accuracy, and SpeedingAnyone who has driven a vehicle has encountered a Light Detection and Ranging (LIDAR) system in action. But how do you know if the detector is working? Let’s take a look behind the scenes at the beam, its scattered light, and the telescope that is...
Measurement of Film Stacks in Cell Phones and Tablets Using White Light InterferometryWith the explosive growth of the tablet and smart phone market, equipment suppliers are developing more complex structures that include polarizers, LCDs, structured air gaps, and more. There are few systems that provide the measurement capabilities...
Modifying Laser Beams: No Way Around It, So Here’s HowTo apply a laser to an industrial process, medical therapy, or communications technology, it is usually necessary to modify the laser beam to achieve the desired results. Beam measurement tools make this possible. We will discuss how to match an...
Fabricating and Testing Freeform Optics: Current Capabilities, Lessons Learned and Future OpportunitiesFreeform optical shapes or optical surfaces that are designed with non-symmetric features are gaining popularity with lens designers and optical system integrators. A common question about freeform optics is, “If I design it, can you really make...
Methods for Measuring Flat Panel Display Defects and Mura as Correlated to Human Visual PerceptionHuman vision and perception are the ultimate determinants of display quality, however human judgment is variable, making it difficult to define and apply quantitatively in research or production environments. However, traditional methods for...
Ultra-Narrowband Optical Bandpass Filters with Large Format and Improved Temperature StabilityHard coated ultra-narrowband optical filters made using modern plasma processes offer much improved transmission, temperature stability and out of band blocking as compared to legacy soft coatings. These filters are used in optical systems as...
Centration Measurement, Lens Alignment and Assembly of Infrared LensesThe whitepaper describes special considerations for the measurement of infrared lenses and gives examples for the measurement, alignment and assembly of different kinds of infrared lenses.
System Integration of Fiber Lasers and Its Effects on Laser QualityThe quality of a laser is usually only measured on the laser source. But most laser sources are integrated into a system being used for a specific process or application. This means the laser light can interact with different components, each of...
How to Use Imaging Colorimeters for FPD Automated Optical InspectionThe use of imaging colorimeter systems and analytical software to assess display brightness and color uniformity, contrast, and to identify defects in FPDs is well established. A fundamental difference between imaging colorimetry and traditional...
High Volume Optical Component Testing Using an Agilent Cary 7000 Universal Measurement Spectrophotometer (UMS) with Solids AutosamplerIn this study, we demonstrate increased productivity and reduced cost-per-analysis with automated, unattended multi-angle R/T analysis for multiple samples of uncoated fused silica using an Agilent Cary 7000 UMS fitted with an Agilent Solids...
Dynamic – Dynamic RangeThe dynamic or dynamic range of a CCD-camera system is a widely used term to characterize the ability of a camera system to measure or image light/dark differences. In the field of photography, the dynamic range is analogous to the contrast range....
Understanding Infinity-Corrected Objective Resolving Power and MagnificationThis informative white paper from Edmund Optics covers a range of topics from the field of Microscopy, including terminology, application examples, and descriptions of different types filters such as dichroic, emission, and excitation filters used...
Real-time Profiling for Focusing, M2, Divergence & AlignmentBeam intensity profiling is an essential tool in many aspects of photonics. The precise intensity distribution in a focused laser beam is critical in many applications: flow cytometry, laser printing, medical lasers, and cutting lasers are just a...
Dispersive 1064nm Raman Spectrometer FamilyOwing to technological improvements spurred on by the telecommunications boom of the last decade, Raman spectroscopy has become much more accessible to users in all fields. The combination of improved technology and the technique’s molecular...
The Benefits of Laser-Reflection Based Ultraprecision Active AlignmentAligning and centering lenses for cementing or positioning in an optical system poses different challenges depending on the final precision requirements and the methods used during alignment. This paper details the benefits of laser-reflection-based...
Asphere Metrology: Options for Measuring Aspheric LensesThis paper will outline the numerous metrology options for aspheres at Optimax, including how they work, any requirements, and what is specified with each method in an effort to help reasonably tolerance aspheres. Effects on the fabrication and cost...
How to measure optical filter spectra accuratelyOptical filters play an important role in enabling applications such as fluorescence microscopy and Raman spectroscopy. In these applications there are two distinct types of beams: the illumination (or excitation) beam and the signal (or emission)...
Reliability and Lifetime of Multilayer Piezo ActuatorsThree essential factors affect the lifetime of piezo ceramics in positioning applications: Humidity, operating voltage and temperature. PICMA® multilayer piezo actuators are based on a special PZT (lead zirconate — lead titanate) ceramic, formulated...
Resolution Enhancement of Imaging Chips with Piezo TechnologyCamera systems and scanners must have high resolutions. This creates difficulties for all applications where low light intensity means neither the resolution of the chip nor the exposure time for changing or moving objects can be freely chosen....
(99 results found)
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