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Working in the Basement: Measuring Signals Below the Noise Floor with a Lock-In AmplifierMeasuring optical signals in the femtowatt (10-15) to nanowatt (10-9) range can be a daunting task. Signal levels this low are lost in typical detector noise levels and swamped by background light. The noise floor for photodiode detectors operated with a small bandwidth (~10 Hz) is on the order of 1 picowatt (10-12). In order to achieve significant improvements in noise rejection we need to turn to a lock-in amplifier. Lock-in amplifiers can improve noise rejection by 3 orders of magnitude or...
Improving Focusing Quality of Spherical LensesEmploying aspherical lenses to reduce aberrations to improve focusing qualities is a well-known concept. But the potpourri of aspherical surfaces offers way more possibilities, even the chance for flexible beam shaping setups. Axicons are conical...
Various Beam Shaping Applications Utilizing AxiconsEmploying aspherical lenses to reduce aberrations to improve focusing qualities is a well-known concept. But the potpourri of aspherical surfaces offers way more possibilities, even the chance for flexible beam shaping setups. Axicons are conical...
Resolution and Dynamic Range: How These Critical CCD Specifications Impact Imaging System PerformanceResolution and dynamic range are two important specifications to be considered when evaluating the capabilities of an imaging colorimeter, yet they are easily misconstrued. The common assumption is that the higher the camera resolution, the higher...
High Power, High LIDT Laser Optics - Understanding Optics for-High Power LasersCatalog optics are fine for many laser applications but high power lasers require specified damage optical characteristics. The whitepaper explores power resilience of laser optics, working with test laboratories, ISO testing, measuring LIDT, LIDT...
Introducing a Novel Spectral Analysis System for Measuring High-Performance Thin-Film Optical FiltersThe HELIX Spectral Analysis System was designed to address the limitations of most commercially available spectrophotometers when measuring high-performance thin-film optical filters. The system’s capabilities are four-fold: it is able to track...
Use Injection Molded Plastic Optics to Reduce System CostPlastic optics in complex optical systems offer many advantages over glass. Designers and manufacturers will gain competitive advantages by using well designed plastic optics in applications well suited for their use. This white paper will discuss...
Get Optical Products to Market Faster Using Modern Virtual PrototypingCompanies developing cutting-edge lasers, optics, and imaging products face significant hurdles getting products to market ahead of competitors. Learn about a new way for optical and mechanical engineers to collaborate that’s changing the way...
Thin-Film Interference Filters for LIDARHigh-performance, ultra-narrowband interference filters with > 95% transmission, less than 0.1 nm bandwidths, steep edges, a square spectral shape, wide range blocking measured at > OD 8 (-80 dB), uniform coatings, and minimal thermal dependence...
“Optical Components for SWIR Imaging”Precision Glass & Optics discusses the challenges of designing optical coatings for shortwave infrared (SWIR) imaging. Also discussed are the many advantages that SWIR imaging devices provide.
Quantitative Laser Raman Spectroscopy of GasesLaser Raman spectroscopy is a powerful analytical technique that is used in a variety of applications for the compositional analysis of solid, liquid and gaseous samples. This whitepaper looks at some examples of how Raman systems can be used to...
Fabrication of FreeformsFreeform surfaces on optical components have become an important design tool for optical designers. Non-rotationally symmetric optical surfaces have made solving complex optical problems easier. Optimax has developed a robust freeform optical...
The FISBA FISCam™ - Customizable Micro CameraFISBA launched the FISBA FISCam™ at Compamed 2015 as a new customizable micro camera technology platform similar to the FISBA RGBeam™ laser module platform. The FISBA FISCam™ benefits from FISBA’s 60 years of experience in producing high quality...
Specifying Advanced Plasma Deposited Hard Coated Optical Thin Film FiltersModern hard coated optical thin film filters are nearly infinitely flexible in capability. Single band, multiband, dichroic tilted filters are all available with high transmission and excellent blocking. However, due to their complex nature and...
Optical Design Tolerancing: A Key to Product Cost ReductionThe ideal optical system design minimizes production costs and meets performance requirements using achievable component and assembly tolerances and well-chosen post-assembly adjustments. Optical design software can help make this ideal manufactured...
Optimax OTR CoatingsOptimax has developed a novel optical coating (OTR) that protects optical surfaces in even the most extreme environmental use conditions. OTR coatings have been demonstrated to provide excellent resistance to latent scratching, staining and dimming...
10 Steps to Choosing the Right Optical CoatingThere are some critical steps you should consider when selecting an optical thin-film coating to maximize your optical systems’ performance. Small changes in requirements can often have a significant impact when evaluating performance and cost....
Precision Infrared Narrow Bandpass and Dual Bandpass Filters Featuring Low OH-Band AbsorptionAlluxa’s new class of Infrared (IR) bandpass and dual band filters bring the precision of dielectric filters to the IR between 2 and 5 microns. They are manufactured with an advanced, plasma enhanced PVD process using durable, hard metal-oxide, and...
LED/OLED Design Using Mixed-Level SimulationThere has been extensive research to improve the design of light-emitting diodes (LEDs) and organic LEDs (OLEDs) to enhance light extraction efficiency, improve beam shaping, and allow color tuning. Due to the range and scales of geometric...
Easy High Dynamic Range Imaging for Welding VisionWelding has long been a key technology for assembling metals parts in various industries. Nowadays with the constant search of quality and productivity, welding has become increasingly sophisticated with the introduction of new processes and the...
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...
Sensor Resolution Versus Lens ResolutionAn informative new white paper from Resolve Optics addresses the often misunderstood considerations when selecting an optimum lens for your digital camera or sensor. The ability of a lens to resolve detail is usually determined by the quality of the...
Are Off-the-Shelf Optics Always the Best Solution?A white paper from Resolve Optics addresses the commonly asked question "Are off-the-shelf optics always the best solution?". Today there exists a huge number of off-the-shelf lenses for mass market applications where unit cost is the dominant...
Promoted Content
Fluorescence Lifetime Imaging Application Simplified... With the pco.flimThe pco.flim whitepaper gives an introduction in fluorescence lifetime imaging, if it is done in the frequency domain, with all the required background information. It is thought to refresh the knowledge about photo luminescence and how lifetime...
Promoted by: PCO-TECH Inc.
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...
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