In this booth interview with Laser Focus World, Shannon Roberts—Product Manager at Radiant Vision Systems—provides an introduction to the new Near-Infrared (NIR) Intensity Lens in a demo from the floor of Photonics West 2019, San Francisco, CA.
Biometric security measures—including fingerprint ID, iris and & retinal scanning, and voice recognition—are gaining popularity across the world due to increasing cybersecurity and privacy threats, accompanied by advancements in technology that make these identification methods possible.
Near-infrared light—the range of electromagnetic wavelengths between roughly 700 nanometers (nm) and 1500 nm—is invisible to the human eye, making it ideal for an increasing number of 3D sensing applications such as facial recognition, iris scanning, gesture recognition, terrain mapping, automobile LiDAR, and night-vision security cameras.
Anne Corning of Radiant Vision Systems discusses the importance of NIR measurement in facial recognition technology, measurement challenges, and technologies that enable measurement efficiency (including imaging, wide-field-of-view optics, and structured light pattern evaluation for characterizing NIR dot patterns used in facial sensing).
Near-infrared (NIR) light covers wavelengths of the electromagnetic spectrum from approximately 780 to 2500 nanometers (nm), which is beyond human visual perception. NIR-based sensing provides machines with information about objects in the physical environment.
Measurement techniques for NIR LEDs and lasers ensure the performance of Time-of-Flight (ToF) light-based proximity sensing and 3D sensing using dot patterns produced by diffractive optical elements (DOE). To ensure performance, accuracy, and safety of devices and systems that use NIR sensing, an effective test and measurement solution is needed.