カドミ光学工業 List of Products and Services

Our company utilizes advanced glass polishing and machining techniques to manufacture a variety of glass products. We can process high-purity quartz glass, which has high transparency and stability, with high precision, allowing us to create components with excellent dimensional accuracy and optical properties. We have also achieved optical contact (a strong bond without the use of adhesives), making it possible to produce parts with shapes and precision that were previously thought to be difficult to achieve with glass products. By creating tools with minimal fluctuations due to temperature changes, we can leverage the transparency of glass for visualization, contributing to improved accuracy and efficiency in visual inspections. In particular, products with optical contact do not use adhesives, eliminating absorption and scattering caused by adhesive layers, and there is no shrinkage or thermal expansion, enabling the production of high-precision and high-quality components. While it may seem that processing holes, grooves, and screw holes in glass materials is difficult due to their hard and brittle nature, there are many cases where it can be addressed with clever engineering. Please feel free to contact us.

• others

We would like to introduce our "Assembly and Adjustment Technology." In a clean environment, we utilize our uniquely developed tools to join various types of optical components, such as lenses, prisms, and polarizing elements, with high quality. Furthermore, we also handle assembly and adjustment of mechanical components. Please feel free to consult us when needed. 【Features】 ■ High-quality joining of various types of optical components ■ Support for assembly and adjustment of mechanical components ■ Technology cultivated through repeated assembly of high-difficulty tasks to meet user requests *For more details, please refer to the PDF document or feel free to contact us.

• others

Our company is capable of various adhesive and bonding processes through the fusion of advanced polishing and assembly techniques. Typical methods include UV bonding, frit bonding, and optical contact, with optical contact being particularly excellent in terms of optical and physical stress (heat resistance and strength), leading to the production of glass products and optical components in forms that have not been seen before. Please feel free to consult us when you need our services. 【Bonding Processing Technologies】 ■ Bonding Processing - Optical Contact ■ UV Bonding ■ Frit Bonding *For more details, please refer to the PDF document or feel free to contact us.

• others

Our company has handled a wide variety of custom optical cells and optical contact products in small quantities. When it comes to joining the glass components of these products, precise material processing that minimizes chipping and other issues is essential. Leveraging this processing technology and experience, we can work with glass—a material prone to chipping—at a high precision level while keeping chipping to an extremely small minimum. The main processing methods involve a combination of rotary grinding machines, Oscar polishing machines, and ring-type polishers. 【Features】 ■ Capable of processing glass surfaces to a high-precision flatness ■ Achieves the production of flat surfaces with extremely few scratches and rectangular blocks with chipping reduced to the smallest possible size through high-quality, high-precision polishing *For more details, please refer to the PDF document or feel free to contact us.

• others

We accept orders for the outer shape processing of glass substrates, lenses, and more. For example, "The specifications of optical elements are sufficient with commercially available products, but the dimensions are too large for installation in the equipment," "Producing a prism or half-mirror as a single piece would be too costly, so I would like to modify a commercial product," or "I want to shape a large filter into a circle to fit the holder dimensions." We can provide 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 ■ Proposals for suitable processing methods based on the characteristics and specifications of glass ■ Cutting and shaping of products from other companies' standards is also possible, allowing for the extraction and shaping of multiple substrates from a single material *For more details, please refer to the PDF materials or feel free to contact us.

• others

"Joining processing" finishes precision machined components that are divided rather than processed as a single unit into products with a full mirror surface through optical contact. It achieves surface accuracy and roughness that cannot be attained by fire polishing. The material is quartz glass, which not only realizes excellent optical properties but also exhibits superior resistance to various stresses such as strength, heat resistance, and chemical resistance. Products utilizing our unique technology are expected to be applied in various fields in the future. 【Features】 ■ Polishing surfaces can be achieved even on the bottom and sides of recessed areas. ■ Sharp right angles are achieved on concave surfaces (bottom surfaces). ■ Superior resistance to various stresses such as strength, heat resistance, and chemical resistance. *For more details, please refer to the PDF document or feel free to contact us.

• others

We manufacture a wide range of high-precision optical elements and polarization elements. Leveraging this processing technology, we are capable of designing and producing optical unit products such as compact interferometers. We listen to your requirements regarding light sources and specifications, and carry out optical design, mechanical design, and the production of components including metal parts like holders, as well as assembly and adjustment tailored to each case. 【Features】 ■ Compact Interferometer - Assembly, adjustment, and production of optical components according to your desired specifications. ■ Optical Unit - Achieving high-precision assembly and flexible customization according to your desired specifications. ■ LD Module - Low cost with minimal necessary functions. ■ Polarization Analysis Module - Compact design while maintaining performance, with significant performance improvements through repairs and modifications. *For more details, please refer to the PDF materials or feel free to contact us.

• others

A "glass container / optical cell" is a container used to store samples such as liquids and gases, and to conduct analysis through light transmission and absorption. As mentioned earlier, it is optically bonded (joined without the use of adhesives) which makes it resistant to chemical elements such as acids and alkalis, as well as to high and low temperatures, allowing for various applications. It can flexibly accommodate specifications for small-scale production and custom orders. 【Features】 ■ Resistant to chemical elements such as acids and alkalis, as well as high and low temperatures ■ Usable for a variety of applications ■ Flexible in accommodating specifications for small-scale production and custom orders *For more details, please refer to the PDF document or feel free to contact us.

• others

Our microreactors are made using quartz material, which not only makes them transparent but also allows for the creation of flow paths with excellent laser light transmission properties and chemical resistance. Similar to optical cells, we combine polishing, bonding, and shaping techniques to meet various customer needs. In addition to machining, we can also accommodate blast processing and etching for the processing of flow paths, enabling the construction of complex flow paths that are not limited to straight or curved lines, such as spiral or star shapes. *For more details, please refer to the PDF document or feel free to contact us.

• others

A "dielectric mirror" is a product that has a multilayer coating of dielectric materials (primarily oxides) on the surface of the mirror substrate. Compared to metal mirrors, its features include achieving high reflectivity and the ability to design reflectivity for specific wavelength ranges, such as half mirrors, hot mirrors, and cold mirrors. It also uses high-precision substrates that leverage glass processing technology, similar to metal mirrors. 【Features】 ■ Multilayer coating of dielectric materials (primarily oxides) on the mirror substrate surface ■ Achieves high reflectivity ■ Capable of designing reflectivity for specific wavelength ranges ■ We can suggest appropriate coatings based on applications and specifications *For more details, please refer to the PDF document or feel free to contact us.

• others

Our company specializes in the bonding of various prisms to accommodate special optical paths and shapes. By combining our expertise in processing (polishing and bonding), we can handle complex and special shapes. We will propose bonding methods such as UV adhesive, optical contact, and others according to your needs. 【Features】 ■ Bonding of various prisms to accommodate special optical paths and shapes ■ Ability to handle complex and special shapes by combining our processing expertise ■ Proposals for UV adhesive, optical contact, and other methods based on your requirements *For more details, please refer to the PDF document or feel free to contact us.

• others

"Dub Prism" is often used to rotate or invert images depending on the rotation angle of the prism and the incident surface. We also accept orders for high-precision models and various custom specifications, even starting from one piece. Please feel free to contact us when you need assistance. 【Features】 ■ Surface Accuracy: up to λ/10 ■ Angle Accuracy: up to ±3 minutes *For more details, please refer to the PDF document or feel free to contact us.

• others

The "pentaprism" is a pentagonal prism. Unlike roof prisms, which rotate the image, it can bend the light path by 90 degrees while keeping the image upright. (The inversion of the image is determined by the number of reflections. Since the pentaprism reflects an even number of times, the image does not invert.) We also accept orders for high-precision models and various custom specifications, starting from just one unit. 【Features】 ■ Surface accuracy: up to λ/10 ■ Angle accuracy: up to ±3 minutes *For more details, please refer to the PDF document or feel free to contact us.

• others

The "Daha Prism" is a roof-shaped prism. It is used to bend the light path by 90 degrees or to rotate the image. A typical example is its incorporation into binoculars. We also accept orders for high-precision models and various custom specifications, even starting from one piece. 【Features】 ■ Surface accuracy: up to λ/4 ■ Angle tolerance: up to ±3 minutes *For more details, please refer to the PDF document or feel free to contact us.

• others

The "Lomboyd Prism" can move the optical axis a fixed distance without rotating the image. By combining it with a 45° right-angle prism and applying a coating, it also functions as a beam splitter. 【Features】 ■ Surface accuracy: ~λ/10 ■ Angle tolerance: ~±30 seconds *For more details, please refer to the PDF document or feel free to contact us.

• others

The "anamorphic prism" is primarily used to change the aspect ratio of the vertical and horizontal images of semiconductor laser light. It is also possible to enlarge in one direction and shape an elliptical beam into a circular beam. 【Features】 ■Surface accuracy: ~λ/10 ■Angle tolerance: ~±5 minutes *For more details, please refer to the PDF document or feel free to contact us.

• others

The "corner cube prism" is used to return the light path in the direction of incidence through three internal total reflections (retroreflection). It is also possible to coat all reflective surfaces with aluminum or silver. It is also referred to as a retroreflector. 【Features】 ■ Size dimensions: up to φ50 ■ Surface accuracy: λ/10 ■ Beam deviation angle: within 5 seconds *For more details, please refer to the PDF document or feel free to contact us.

• others

We have a wide range of materials for the production of optical cells and optical elements. The main types include fused quartz, synthetic quartz, Tempax, and whiteboard. In addition to grades suitable for optical applications, we also offer some laser-grade materials. These materials are processed into sheet form rather than blocks, and both sides are optically polished, making them suitable for various applications such as processing materials, testing materials, window plates, and spacers. We can accommodate your desired sizes, from standard sizes like 5 inches (127×127) and 6 inches (152×152) to custom sizes, so please feel free to contact us. If you require short lead times and low costs, we have pre-processed standard size products available, so please select from the standard product list. 【Features】 ■ Processed into sheet form rather than blocks, with both sides optically polished ■ Usable for various applications such as processing materials, testing materials, window plates, and spacers ■ Custom sizes available upon request *For more details, please refer to the PDF document or feel free to contact us.

• others

A "bandpass filter" is a filter that transmits a portion of wavelengths while blocking others. We will consider products that combine multiple filters or utilize multilayer structures to meet your application and desired specifications. 【Features】 ■ Transmits a portion of wavelengths while blocking others ■ Consideration based on your application and desired specifications *For more details, please refer to the PDF document or feel free to contact us.

• others

The "ND filter" has the property of absorbing specific colors while allowing other wavelengths to pass through. By controlling the thickness of the filter, accurate filtering can be achieved over a wide bandwidth. 【Features】 ■ Absorbs specific colors while allowing other wavelengths to pass through ■ By controlling the thickness of the filter, accurate filtering can be achieved over a wide bandwidth *For more details, please refer to the PDF document or feel free to contact us.

• others

The "long pass filter" transmits wavelengths that are longer than a specified cut-on wavelength over a broad range. In contrast, the "short pass filter" transmits wavelengths that are shorter than a specified cut-off wavelength over a broad range. The "dichroic filter" has a similar function but is designed to reflect light in the stop band. All filters are designed for an incident angle of either 0° or 45°. 【Features】 ■ Transmits wavelengths longer than a specified cut-on wavelength over a broad range ■ Transmits wavelengths shorter than a specified cut-off wavelength over a broad range ■ Assumes reflection of light in the stop band ■ Designed for an incident angle of either 0° or 45° *For more details, please refer to the PDF document or feel free to contact us.

• others

A representative of metal mirrors is the "aluminum mirror." We offer three main types: "Al only," which has an average reflectance of over 90% in the visible range; "Al + protective film (MgF2, SiO2, SiO)," which has over 85%; and "Al enhanced reflection," which has over 95%. The above three types are primarily available with the addition of protective films or functional films. 【Lineup】 ■ Al only - Used from the ultraviolet to near-infrared range ■ Al + protective film (MgF2, SiO2, SiO) - Used from the ultraviolet to near-infrared range ■ Al enhanced reflection - A dielectric multilayer film is applied on aluminum, achieving high reflectance *For more details, please refer to the PDF materials or feel free to contact us.

• others

"Metal mirrors" are products among mirrors that have a metal film deposited on the surface of the substrate. Our mirrors utilize glass processing technology to achieve high precision in dimensions, parallelism, and flatness (surface accuracy and surface roughness). We can accommodate a wide variety of products with different types of deposited films, including aluminum (Al), gold (Au), silver (Ag), alumina (Al2O3), chromium (Cr), and nickel (Ni). We will propose the most suitable options based on your desired applications, optical properties, and costs. 【Features】 ■ Metal film is deposited on the surface of the substrate ■ High precision processing of dimensions, parallelism, and flatness (surface accuracy and surface roughness) ■ Types of deposited films - Aluminum, gold, silver, alumina, chromium, nickel, etc. ■ We will propose the most suitable options based on your desired applications, optical properties, and costs *For more details, please refer to the PDF document or feel free to contact us.

• others

"Cylindrical lenses/rod lenses" act as lenses in only one axial direction of light. It is possible to change the line formation and the aspect ratio of the image. Applications using cylindrical lenses include "beam shaping of semiconductor lasers," as well as "laser line generators" and "anamorphic optical systems." [Features] ■ Acts as a lens in only one axial direction of light ■ Can change line formation and aspect ratio of the image *For more details, please refer to the PDF document or feel free to contact us.

• others

"Achromatic lenses (doublet lenses) and other bonded lenses" primarily involve the bonding of multiple lenses made from materials with different refractive indices to reduce aberrations and distortions. Our company utilizes glass bonding and processing technologies to also accommodate the processing of bonded lenses into special shapes. Please feel free to contact us when you need assistance. 【Features】 ■ Bonding of multiple lenses made from materials with different refractive indices ■ Processing of bonded lenses into special shapes is also available *For more details, please refer to the PDF document or feel free to contact us.

• others

The "Meniscus Lens" is a lens with one concave surface and one convex surface. We can accommodate various custom specifications ranging from approximately Φ3mm to around Φ150. We can also support dimensions outside of those mentioned; please contact us for more information. In addition to standard circular shapes, we can also process band shapes and those with hole machining. 【Features】 - A lens with one concave surface and one convex surface - Custom specifications available from approximately Φ3mm to around Φ150 (dimensions outside of those mentioned can also be accommodated) - Processing available for shapes other than standard circles, including band shapes and those with hole machining *For more details, please refer to the PDF document or feel free to contact us.

• others

"Plano-convex lenses, biconvex lenses / plano-concave lenses, biconcave lenses" are typical shapes of lenses that can be used for focusing applications and magnifying images. We can accommodate various custom specifications ranging from approximately Φ3mm to around Φ150. We can also support dimensions other than those mentioned above; please contact us separately. In addition, we can process shapes other than standard circular ones, such as band shapes and those with hole processing. [Features] ■ Can be used for focusing applications and magnifying images ■ Typical shapes of lenses ■ Accommodates various custom specifications ranging from approximately Φ3mm to around Φ150 (※ Can also support dimensions other than those mentioned above) ■ Can process shapes other than standard circular ones, including band shapes and those with hole processing *For more details, please refer to the PDF document or feel free to contact us.

• others

There are various types of wavelength plates, but the wavelength plates manufactured by our company primarily use birefringent crystals to control the phase difference. Depending on the wavelength of the light source used, we can provide a phase difference of 90 degrees (1/4) or 180 degrees (1/2) between the Slow axis and Fast axis, enabling functions such as changing the angle of circular polarization to linear polarization and vice versa. 【Features】 ■ Production available from a single unit ■ We can propose products tailored to your specific applications *For more details, please refer to the PDF document or feel free to contact us.

• others

"Optical contact" is a technology that enables bonding by utilizing the attractive forces between materials without the use of adhesives. It is also referred to as optical bonding, and due to the absence of adhesives, it exhibits excellent properties not only in terms of heat and chemical resistance (such as strong acids and strong alkalis) but also optically. In this bonding process, it is crucial to create an extremely close approximation of flat surfaces to enable intermolecular forces to act, resulting in a situation where glass substrates are in close contact. Our company excels in the technology to create this bonding situation by leveraging precision grinding processes. Additionally, there is a method to further strengthen the bond through heating, which, unlike welding, maintains the smoothness of the glass surface, preventing refraction, absorption, and scattering of light. Please feel free to consult us when needed. *For more details, please refer to the PDF document or feel free to contact us.*

• others

We offer "plate type" and "cube type" beam splitters. For both products, the precise processing of glass materials is a crucial point for achieving accurate optical paths. Leveraging the polishing and bonding techniques developed through our extensive work with cell containers and other products, we ensure high surface and angular precision for the "plate type," and in the case of the "cube type," we also maintain a high level of precision during bonding in addition to the accuracy of the prisms. 【Features (Plate Type)】 ■ A shape coated on a parallel substrate, relatively inexpensive ■ Easier to scale up compared to other types ■ Wedge substrate type for ghost reflection removal and thinner plate thickness ■ Capable of high-quality types that also ensure surface precision of the substrate *For more details, please refer to the PDF document or feel free to contact us.

• others