We will exhibit at OPIE'26.

We will solve the issue of uneven illumination through high-precision processing of ultra-thin rods and light guides, as well as high-precision assembly. Scheduled to exhibit at OPIE'26.

The "Light Guide" can output light, which is emitted from a fiber laser, as uniform light to the irradiation surface by reflecting it within a rod or light pipe. It is a hollow type assembly product with a reflective film applied to the inner surface of the substrate, and it can accommodate shapes such as square, round, hexagonal, and tapered. 【Processing Specifications】 ■ Material: BK7, synthetic quartz ■ Outer dimensions: □1mm to □30mm ■ Length dimensions: up to 300 ■ Surface accuracy: optical polishing up to λ/20 ■ Parallelism: 5 seconds or more ■ Effective diameter: within 90% of the actual size *We will exhibit at OPIE'26, held from April 22 to 24, 2026. Please come and see the actual product for your consideration.

• Glass

It is mainly used for measuring the length of the X and Y stages of exposure equipment.

The "Vermiller" is mainly used for measuring the length of the X and Y stages of exposure devices. The processing accuracy of the Vermiller has a significant impact on the performance of the X and Y stages. The materials used include high-purity synthetic quartz and low thermal expansion glass such as ClearCeram Z. 【Features】 ○ Material: ClearCeram, synthetic quartz ○ Length dimensions: 100 mm to over 800 mm ○ Surface accuracy: a few micrometers to λ/10 *For detailed specifications regarding materials, shapes, etc., please feel free to consult us.

• lens

Output to the irradiation surface as uniform light! Solve the issue of irradiation unevenness with various combinations of elements!

The "Fly Eye Lens" is an imaging element that arranges the same single lens in both vertical and horizontal directions. By passing light output from a fiber laser through this product, it is possible to create the same conditions as a multi-point light source, enabling uniform illumination. Additionally, each lens is joined using a unique technique after being polished. Coatings with high transmittance and durability in the ultraviolet range are also available. It is mainly used in the illumination systems of semiconductor exposure equipment. 【Processing Specifications】 ■Outer Diameter: Up to 420mm ■Number of Elements: Up to 200 ■Material: BK7, Quartz Glass ■Lens Shapes: Plano-convex Lens, Biconvex Lens, Drum Lens ■Adhesion Method: Frit Adhesion, UV Adhesion *For more details, please refer to the PDF document or feel free to contact us.

• Glass

Effective for adding mirrors and diffraction gratings! Capable of converting linear polarization to random polarization.

Our polarization compensation plates are characterized by their ability to flexibly accommodate various shapes and wedge angles, utilizing processing technology based on crystal substrates (wedge plates). Therefore, we can propose products suitable for your light source (beam diameter, wavelength, etc.) starting from just one piece. *For more details, please download the catalog or contact us.*

• Spectroscopic Analysis Equipment

Analyze the relative size, shape, and internal structure of each individual cell! We provide high-quality cells.

A "flow cytometer" can analyze the relative size and shape of individual cells, as well as their internal structures. The measurement method involves irradiating with an excitation laser at the measurement wavelength and performing fluorescence measurement. "Flow cytometer cells" require high standards in terms of dimensional accuracy, surface accuracy, and appearance level, and we supply products that meet these specifications. 【Features】 ■ Analysis of the relative size and shape of individual cells, as well as their internal structures ■ Fluorescence measurement performed by irradiating with an excitation laser at the measurement wavelength ■ High standards in terms of dimensional accuracy, surface accuracy, and appearance level *For more details, please refer to the PDF document or feel free to contact us.

• lens

Custom shape processing is possible according to usability and specifications! We also accept processing of materials you have.

We accept orders for the outer shape processing of glass substrates, lenses, and more. For example, we can accommodate requests such as "the specifications of optical elements are sufficient with commercially available products, but the dimensions are too large for installation in the device," "producing a prism or half-mirror as a single piece is too costly, so we would like to modify a commercial product," or "we want to shape a large filter into a circle to fit the holder dimensions." We can perform outer shape processing tailored to usability and specifications. In addition to offering products that include materials, we also accept processing of materials that customers already have. Please feel free to consult with us. 【Features】 ■ A variety of achievements in cutting and shaping processing ■ We can propose suitable processing methods according to the characteristics and specifications of glass ■ We can also cut and shape products according to other companies' standards, and we can handle tasks such as cutting out multiple substrates from a single material or shaping them. *For more details, please refer to the PDF document or feel free to contact us.

• Machining Center
• Processing Contract

High-precision measurement of absolute wavelength! Custom gas cells suitable for use in the ultraviolet region are available!

The "spectroscopic gas cell" is a product designed for the high-precision measurement of absolute wavelengths. By filling the gas cell with a sample and transmitting light through it, the concentration of the target component is determined by measuring the light absorption caused by that component. Our company offers custom-made quartz glass gas cells suitable for use in the ultraviolet region. 【Features】 ■ Custom-made options available (Brewster window compatible) ■ Long optical path fabrication available (up to 500mm) ■ Window surface accuracy: λ/4 ■ Window surface quality: MIL40-20 *For more details, please refer to the PDF document or feel free to contact us.

• Other optical parts

The "International Fermentation and Brewing Food Industry Exhibition" is Japan's only specialized exhibition that brings together ingredients, materials, research equipment, manufacturing facilities, testing equipment, and packaged products related to fermentation and brewing. In 2013, "Washoku" (Japanese cuisine) and in 2024, "Traditional Sake Brewing" were registered as UNESCO Intangible Cultural Heritage, increasing interest in Japan's fermentation and brewing industry. This exhibition will be grandly held at Tokyo Big Sight as a platform to promote the development of the industry and the richness of food culture to the world, and to spread Japan's proud fermented and brewed foods.

Gathering the wisdom of the DOWA Group towards the realization of a decarbonized society! We would like to introduce the initiatives of each DOWA Group company. We look forward to seeing you at our booth!

Heat pipes are passive heat transfer devices that utilize latent heat of vaporization in a two-phase system and do not require driving energy. Heat pipes have very high thermal conductance, with their equivalent thermal conductivity being several hundred times higher than that of a copper rod of the same size. The primary application of heat pipes is in the cooling of computers and electronic products. Recently, AI servers and data centers have gained attention; for example, nVidia's GPUs can reach heat generation of up to 1 kW, employing water-cooled cold plates and 3D vapor chambers. Air cooling is limited to 800 W, while nVidia's Ruben GPU can reach 2 kW, utilizing water-cooled microchannel cold plates, among others. In response to further increases in heat generation, vapor chamber composite cold plates, two-phase pump loop cooling, and impingement cooling have been developed. Additionally, recent cooling cases for batteries, motors, and IGBTs in electric vehicles will be discussed.

In the past, thermal design primarily focused on complex heat transfer through convection and radiation to the atmosphere. However, with the increase in surface-mounted components and power density, the heat dissipation pathways are gradually shifting to thermal conduction through substrates and enclosures. One of the key heat dissipation devices to promote heat transfer in limited spaces is TIM (Thermal Interface Material). A wide variety of TIMs have been developed in the market, and in recent years, key areas where TIMs are widely used include AI data centers and automotive equipment centered around electric vehicles (EVs). In this course, we will first explain the overview of heat dissipation design in AI data centers and automotive equipment, and in the latter half, we will provide a detailed explanation of the thermal and mechanical properties of TIMs in these two fields, as well as important considerations when selecting TIMs.

An explanation of the economic viability, technology, projects, and industry trends and outlook for thermal energy storage and thermoelectric batteries, which are attracting attention for their use in unused heat utilization, energy storage, and renewable energy load leveling. Part 1 Technological and business outlook for thermal energy storage and thermoelectric batteries both domestically and internationally Part 2 Fundamentals, components, technology, and application outlook of thermophotovoltaic (TPV) power generation systems