セントラル光学 List of Products and Services

Central Optical Co., Ltd.'s photo-etching technology is a powerful tool for solving challenges in products such as semiconductor inspection equipment, medical devices, and lighting equipment. By utilizing precise pattern processing, we create optimal products from the design stage, enhancing the accuracy and functionality of the products. Furthermore, with ND coating technology, we can add features such as light quantity adjustment and dirt prevention, further increasing the value of the products. We also respond to inquiries from various industries and provide proposals tailored to our customers' needs. *For more details, please download the PDF or feel free to contact us.*

• Other optical parts

Central Optical Co., Ltd.'s photo-etching technology provides precision processing technology that meets the high demands from various industries. In particular, the semiconductor industry and medical device sector require high-precision pattern formation, and our technology can fully meet those demands. Additionally, by utilizing ND coatings, we can add functionalities such as light quantity adjustment and dirt prevention. No matter how complex the shape, we support our customers in solving their challenges by achieving optimal processing. We contribute to the creation of reliable products. *For more details, please download the PDF or feel free to contact us.

• Other optical parts

At Central Optical Co., Ltd., we utilize photolithography technology to meet the needs of various industries, including semiconductor inspection equipment, medical devices, and lighting equipment. Through precise pattern processing, we not only provide high-accuracy products but also enhance the functionality and durability of our products with ND coating. To unlock the potential of our customers' products, we achieve flexible responses and high-quality processing. We offer optimal proposals to solve challenges faced in the manufacturing field while balancing quality and delivery times. *For more details, please download the PDF or feel free to contact us.*

• Other optical parts

Central Optical Co., Ltd.'s photo-etching technology is ideal for semiconductor inspection equipment, medical devices, and lighting-related components. By enabling fine pattern processing, it expands design flexibility and improves product accuracy. Additionally, by using ND coatings to add light adjustment and dirt prevention functions, it enhances the durability and performance of products. We respond flexibly to inquiries from various industries and provide optimal solutions leveraging our technical expertise. We support the creation of high-quality products that address various challenges tailored to customer needs. *For more details, please download the PDF or feel free to contact us.*

• Other optical parts

We would like to introduce the strengths of Central Optical Co., Ltd. By in-house manufacturing both optical thin films and etching processes, we achieve low costs and short delivery times. We provide a one-stop service from glass material procurement to polishing, coating, photo-etching, silk screen printing, laser marking, and dicing cuts. 【Four Strengths】 ■ Pattern accuracy of ±1μm ■ Low cost and short delivery time ■ Abundant variations of ND ■ One-stop service *For more details, please download the PDF or feel free to contact us.

• Processing Contract

Since our establishment in 1983 as a specialized manufacturer of optical thin films, we have been committed to "quality first" in our manufacturing processes. Currently, we approach our work with the belief that "quality first is a given." Additionally, we are particularly conscious of ensuring "stable supply" to our customers without causing any inconvenience, even amidst recent circumstances. Moving forward, we aim to face various challenges while leveraging our strengths in "continuity" as the industrial structure changes. 【Products We Handle】 ■ Optical Thin Films *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We offer a variety of optical coatings such as AR coatings, hand pass filters, IR cut filters, metal coatings, and beam splitters. We can also arrange materials for colored glass and other glass materials from manufacturers like HOYA and SCHOTT. Please feel free to contact us when you need assistance. 【Features】 ■ A variety of optical coatings available ■ Material arrangements for glass materials are also possible *For more details, please download the PDF or feel free to contact us.

• Other optical parts

"Photo etching processing," also known as photolithography processing, is a fine processing technique. It is possible to pattern not only metal films (such as chromium Cr, aluminum Al, and copper Cu) but also dielectric films like AR coatings and IR cut coatings. We manufacture calibration charts, reticles, memory, resolution charts, soft focus filters, and cross filters for photography. 【Features】 ■ Capable of handling up to 200mm ■ Provides high-precision patterning despite the disadvantages of wet etching in processing accuracy ■ Excellent cost performance and short delivery times ■ Capable of patterning dielectric films and forming patterns on film substrates *For more details, please download the PDF or feel free to contact us.

• Processing Contract

We would like to introduce our "Broadband ND Coating (UV-NIR)." This is a broadband ND filter that covers ultraviolet (0.2μm) to near-infrared (2.5μm). Due to its metallic film, it has a high reflectance, but it maintains a constant transmittance across a broad spectrum, with a transmittance that can be set arbitrarily from 0.01% to 80% (OD0.1 to 4.0). 【Features】 ■ Maintains a constant transmittance across a broad spectrum ■ Transmittance can be set arbitrarily from 0.01% to 80% (OD0.1 to 4.0) *For more details, please download the PDF or feel free to contact us.

• Coating Agent

Our "ND (Neutral Density) Coating" offers a wide range of variations (density 0.1 to 6.0) and features excellent flatness and low reflectivity. It is possible to achieve low reflectivity on both the front and back surfaces, reducing the effects of flare and ghosting. We also support ND coatings with water and oil-repellent coatings, as well as pattern formation of ND films through photo-etching. 【Transmittance】 ■85% to 0.0001% *For more details, please download the PDF or feel free to contact us.

• Coating Agent

We offer a variety of "optical coatings" including AR coatings, bandpass filters, IR cut filters, metal coatings, and beam splitters. The "AR coating" is a wide type that covers general visible light to near-infrared and can accommodate various wavelengths such as ultraviolet. The "bandpass filter/low-pass filter/bandpass filter" can be provided with both sides coated, as well as single-sided coating options and combinations with colored glass from various manufacturers. Please feel free to contact us if you have any requests. 【Product Lineup】 ■ AR Coating ■ Bandpass Filter/Low-pass Filter/Bandpass Filter ■ IR Cut Filter/UV Cut Filter ■ Metal Coating ■ Beam Splitter *For more details, please download the PDF or feel free to contact us.

• Coating Agent

We offer "ND Coating (ND Filters and Attenuators)" at our company. Our "ND Coating" features excellent flatness in transmittance across a wide range, and includes low-reflective types with low surface reflectance, metal film single-layer types, and low-reflective types with water and oil repellency. Additionally, industrial ND filters/attenuators are used as large ND filters for professional broadcasting equipment and as light quantity adjustment attenuators for laser devices that are difficult to adjust. Please feel free to contact us if you have any requests. 【ND Coating Products】 ■ ND filters for photography ■ Industrial ND filters/attenuators *For more details, please download the PDF or feel free to contact us.

• Coating Agent

Our company offers "Photo Etching Processing / Photo Lithography Processing." We can form patterns not only on metal films (chromium, copper, aluminum) but also on dielectric multilayer films such as AR coatings and IR cut filters. We can accommodate mass production with dimensional accuracy of ±1μm, despite being a cost-effective wet etching process. Additionally, we can apply multiple coatings, including dielectric films, on the same surface, and we are capable of manufacturing special effect filters used for photography and videography. 【Features】 ■ Capable of mass production with dimensional accuracy of ±1μm ■ In-house processing from coating to etching ■ Achieves low cost and short delivery times *For more details, please download the PDF or feel free to contact us.

• Processing Contract

Our company handles optical thin film processing. We achieve pattern dimension processing accuracy of ±1μm through low-cost wet etching in mass production. Additionally, we offer a wide variety of ND (Neutral Density) coatings (density 0.1 to 6.0), with excellent flatness and low reflectivity. We provide a one-stop service from glass material procurement to polishing, coating, photo etching, silk screen printing, laser marking, and dicing cuts. 【Features】 ■ Pattern dimension accuracy of ±1μm for wet etching ■ Low cost and short delivery time ■ Abundant variety ■ One-stop service *For more details, please download the PDF or feel free to contact us.

• Other optical parts