650nm short pass filter - selectively transmits light below a specific wavelength.

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.

The Kansai Expo is being held as an international event where cutting-edge technologies, services, and cultural expressions from around the world gather under the grand theme of "Designing a Future Society Where Life Shines" (as of the article dated September 29, 2025). From AI-driven autonomous robots and next-generation mobility to immersive video experiences, space exploration technologies, and future medical and healthcare innovations, a wide range of innovative technologies are being showcased right before the eyes of visitors, providing a valuable opportunity to experience the vision of society's future up close. In our series, we have focused on optical thin films and fine pattern processing (metallization) technologies, which function as the unsung heroes behind these cutting-edge technologies, introducing them over seven installments. Optical thin films enable precise light control, such as reflection, transmission, and wavelength selection, playing an essential role in various advanced devices like sensors, cameras, projectors, and space equipment. Meanwhile, fine pattern processing serves as a foundational technology that supports the high precision of electronic devices, biosensors, and next-generation displays by controlling structures at the nanometer level. For more details, please visit our company website.

The 2025 Osaka-Kansai Expo is a grand stage where cutting-edge technologies and cultures from around the world intersect. In particular, the pavilions of Middle Eastern countries such as Saudi Arabia, the UAE, Qatar, and Oman resemble a miniature future city, showcasing advanced architecture, smart energy, and AI-controlled urban infrastructure, allowing visitors to experience "future urban living." These Middle Eastern countries are actively promoting sustainable urban development and smart city initiatives, with significant expectations for industrial revitalization. Optical filters and thin-film technology can be applied across a wide range of fields, including renewable energy facilities, transportation infrastructure, healthcare, and security. Adachi New Industries aims to support the technological foundation of these future cities and contribute to industrial innovation on a global scale. 【1】 Experiencing the Future City at the Kansai Expo 【2】 The Role of Optical Thin Films in the Revitalization of Middle Eastern Industries 【3】 The Vision of Future Cities Shaped by Optical Technology 【4】 A Bridge of Friendship Through Optical Filters. For more details, please visit our company website.

We have introduced the latest dicing cutting machine at the Higashi-Osaka factory of Adachi New Industry Co., Ltd. With this new equipment, Adachi New Industry Co., Ltd. can now achieve in-house processing from the design of optical thin films and metal pattern processing to film formation, etching, lift-off pattern processing, and chip creation, all in a consistent manner. We will strive to meet your expectations by aiming for even higher quality, precision, and stable supply. ■Specifications Maximum work size: φ8 inches (up to 141×141mm) Minimum cut size: 3×3 mm 　　　　　　　　　*We will achieve processing of even smaller sizes in the future. ■Processable substrates - Optical glass substrates (B270, D263, blue plate, quartz, etc.) - Silicon wafers *We also plan to gradually increase the types of processable substrates in the future.