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

In the medical and healthcare fields, light has already become an indispensable infrastructure. From endoscopes, fluorescence observation devices, blood analyzers, pulse oximeters, and wearable vital sensors to regenerative medicine and phototherapy devices, optical control technologies such as "wavelength selection," "reflection control," "stray light suppression," and "high-sensitivity detection" are required in every scenario. However, in actual design settings, it cannot be said that there are many cases where equipment manufacturers and optical thin film manufacturers engage in sufficient discussions from the early stages. As a result, filters and mirrors are often "added later" in the optical system's post-processing, leaving room for improvements in S/N ratio, miniaturization, and low power consumption that should have originally been achieved. We will redefine the role of optical thin films in the medical and healthcare fields and explore the possibilities from the perspective of "functional co-creation" rather than just "material supply." 1. The essence of wavelength design in biosensing 2. How reflection and absorption control change the image quality of endoscopes and observation systems 3. Wearable medical devices and angle-dependent design 4. High-durability thin films in phototherapy and sterilization fields The option of co-creation - a proposal from Adachi New Industry Co., Ltd. For more details, please check our company website.

Sports are constantly evolving. The lightweighting of equipment, the high-strength of materials, form optimization through data analysis, and the high functionality of apparel—technological innovations for improving competitive performance are now spreading not only among top athletes but also across all sporting environments. In recent years, advancements in sensor technology and AI analysis have significantly shifted sports from "sensation" to "science." However, what underpins this transformation is, in fact, "light." Visibility, tracking, sensing, and presentation—all these aspects utilize light information, and it is optical thin film technology that influences their accuracy and comfort. Now, this "technology that controls light" is poised to unlock new possibilities in sports. It is not just a simple coating; it is an advanced spectral design technology that selects wavelengths, controls reflection, and blocks unwanted light. This technology enhances athletes' decision-making abilities, improves sensor accuracy, and serves as a foundational technology for optimizing the competitive environment itself. ◆ Enhancing athlete performance × Optical thin films ◆ Data sports × Optical filters ◆ Integration with biosensing ◆ Towards future sports devices For more details, please check our company website.

Optical filters are important devices used to extract only the necessary wavelengths from light or to block unnecessary wavelengths. They are utilized in a wide range of fields, from cameras and displays that we commonly see, to spectroscopic analysis devices used in medical and bio fields, as well as in industrial applications such as laser processing and optical communication. Light encompasses a broad wavelength range, including ultraviolet, visible, and infrared light; if the desired light cannot be precisely controlled, it can lead to issues such as false detection, increased noise, and decreased image quality. This is where the concepts of "cut-on" and "cut-off" come into play. These concepts indicate the boundary where light begins to transmit and the boundary where transmission ends, forming the foundation of optical filter design. 1. Definition and Basic Principles of Cut-On and Cut-Off The most important parameters for correctly designing and evaluating optical filters are the "cut-on wavelength" and "cut-off wavelength." These are not just names; they are reference values that numerically define the effective performance of the filter, specifically which wavelength ranges are transmitted and which ranges are blocked. 2. Technical Points of Design and Control For more details, please visit our company website.

Optical thin-film filters are important optical components designed to transmit and reflect light at specific wavelengths. Optical filters have the troublesome characteristic of "angle dependence," where the transmission and reflection properties change depending on the observation angle and the angle of incidence. This property can be both an advantage and a challenge depending on the usage conditions of the filter. In this article, we will explain in detail the reasons for the angle dependence of optical thin-film filters and its effects, as well as practical considerations and countermeasures. 1. Basics of optical thin-film filters and angle dependence 2. What is angle dependence? 3. Effects of angle dependence and application examples 4. Countermeasures and design considerations for angle dependence A message to designers - from a film manufacturing company For more details, please visit our website.