905nm bandpass filter (near-infrared region): for TOF and LiDAR

In recent years, the boundary between beauty and technology has begun to rapidly dissolve. The demand for at-home skincare devices continues to expand globally, with some areas, such as light-based treatment devices (phototherapy), recording growth of over 20% year-on-year as of 2024. These products offer more than just simple "apply and layer" beauty. They provide an experience that precisely delivers physical energies such as light, heat, electric currents, and sound waves to the skin. Let’s pose a question. "What exactly is controlling that light?" One answer lies in optical thin-film technology. Invisible nanometer-scale films quietly but decisively influence the performance of beauty devices. This article will explore the role and potential of optical thin films in the beauty tech field from the perspective of product development and engineering. 1: What is optical thin film? 2: Scenes of optical thin film utilization in beauty tech 3: Points and precautions during design and adoption 4: Future prospects—The fusion of personalized beauty and optical thin films Summary: "Invisible technology" is changing the beauty experience. For more details, please check our website.

Light includes "visible light," which can be seen by the human eye, and invisible light. Near-infrared (NIR) is one type of "invisible light" located right next to visible light. In fact, it is deeply involved in various devices and industrial processes around us, and its importance has been increasing in recent years. We will explain clearly from the basics of "What is near-infrared?" to the fields in which it is used, and its relationship with optical coating technology. 01: What is near-infrared? — Organizing the "companions" of light 02: Where is near-infrared used? — Expanding application fields 03: The relationship between near-infrared and optical coatings — The power of "thin films" that enhance performance 04: The precision required for near-infrared filters Summary: The key to utilizing near-infrared lies in precise optical thin films Near-infrared compatible filter "Artisan Infrared" For more details, please visit our company website.

"Extract only the desired light" — this is the role of optical components known as band-pass filters (BPF). We will explain the mechanism and selection of BPFs, which are used in various fields such as medical, industrial, and environmental measurement, in an easy-to-understand manner, even without specialized knowledge. Camera sensors, medical fluorescence microscopes, factory appearance inspection devices, environmental measurement sensors — these seemingly completely different devices share a common technical challenge: "accurately extracting only the necessary wavelengths from light that contains countless wavelengths." For example, in fluorescence imaging, it is essential to detect only the weak fluorescence signals amidst strong excitation light. In factory appearance inspection, it is necessary to shut out stray light from daylight and fluorescent lamps to detect only the illumination wavelengths. The optical component responsible for this "light selection" is the band-pass filter (BPF). The name may sound complicated, but once you understand its mechanism, it is based on a very simple principle. We will present the basic concepts of BPFs, manufacturing principles, and points for application selection in a format that can be read in five minutes. Please check our company website for more information.

In recent years, "STEAM education" has rapidly spread in educational settings, increasing the importance of experimental environments and measurement technologies for experiential learning in science and technology. Among these, spectroscopic techniques that analyze substances and environments using light have gained attention. Not only in cutting-edge research fields such as spectroscopic measurement, laser experiments, and biosensing, but also in universities, technical colleges, and high schools, there has been an increase in experiments utilizing optical technologies. The foundation of these technologies is optical thin films (optical filters) that control the wavelength of light. Optical thin films significantly improve the accuracy of spectroscopic measurements and optical sensing by allowing only specific wavelengths to pass through or by blocking unwanted light. Furthermore, they hold potential as educational materials that enable intuitive understanding of the physics of light through phenomena such as interference and structural colors. 1. Compatibility of STEAM education and optical technology 2. Optical thin films used in education and research fields 3. Custom optical thin films required for research applications 4. Potential of optical thin films as educational materials 5. Co-creation proposal: New initiatives with educational and research institutions Optical thin films are materials that connect "learning" and "technology." For more details, please refer to our company website.