Cold mirror: A filter that transmits near-infrared light and reflects visible light.

At Adachi New Industry Co., Ltd., we prepare standard stock items that are easy to verify in order to facilitate smoother product development for our customers. Gold mirrors (Au mirrors) are optical elements that use the precious metal "gold (Au)" as a reflective film material, exhibiting an extremely high reflectivity (>96%) in the infrared spectral range (800 nm to 2 µm). Please make use of them. ◆◆ Are you facing any of these issues? - The performance varies significantly depending on the reflective wavelength range of the gold mirror, requiring technical judgment to select the most suitable specifications for the application. - There are differences in quality parameters such as film thickness accuracy, uniformity, adhesion strength, and surface roughness, making selection difficult. - Optical components using high-purity gold have complex manufacturing processes and are easily affected by material procurement. - Price differences can be significant due to fluctuations in gold costs and the precision of manufacturing equipment, making simple price comparisons challenging. - The wavelength range and incident angle characteristics may not match requirements, leading to risks and costs associated with reordering. - It is difficult to find processing sources that can produce stable prototypes in small quantities. Please check our website for more information.

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.

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.

We have added a new product to our standard inventory lineup: a "UV transmission filter" that cuts visible light while allowing infrared wavelengths to pass through, which has been frequently inquired about! ◆ This product simultaneously transmits ultraviolet and infrared light while cutting all visible light. It allows UV-A wavelengths to pass through while cutting visible light, with a rise starting from near-infrared. It is a very tricky film formation, but we encourage you to give it a try. ◆ Regarding standard inventory products from Adachi New Industry Co., Ltd.: - I need a few pieces quickly for product development and performance testing... - I want to get a rough idea for now... - I would like to try a prototype with a slightly altered shape... Adachi New Industry sincerely addresses the voices of such customers! In today's world, where simulation technology has advanced, we will respond quickly to customer requests by providing standard inventory products, so please feel free to contact us!