河合光学 List of Products and Services

Let me introduce the mechanism of vapor deposition. "Vacuum vapor deposition" is a technique that involves heating and evaporating metals, oxides, etc., using an electron gun or similar device in a vacuum of less than 1.0E-3 Pa, and depositing the resulting molecules onto the surface of a substrate to form a thin film. Kawai Optical Co., Ltd. has been advancing its unique research and development in vacuum vapor deposition technology. To accurately respond to customer demands, all management and employees work together, sharing information to focus on creating high-quality products with stable safety. Our website also explains the "mechanism of sputtering" and "mechanism of optical films." For more details, please refer to the related links below. [Overview of Vacuum Vapor Deposition] ■ Heating and evaporating metals and oxides in a vacuum of less than 1.0E-3 Pa using an electron gun or similar device ■ Depositing the resulting molecules onto the surface of a substrate to form a thin film *For more details, please refer to the PDF materials or feel free to contact us.

• Evaporation Equipment

This catalog features a list of products handled by Kawai Optical Co., Ltd., which primarily deals with optical mirrors and optical filters. It includes various optical products such as dichroic mirrors that separate light into two or more wavelength ranges, and anti-reflective coatings that reduce the surface reflectance of glass and resin molded products. [Contents] ■ Names and wavelengths of electromagnetic waves ■ Mechanism of vacuum deposition and sputtering ■ Mechanism of optical films ■ Anti-reflective coatings ■ Dichroic mirrors/filters, etc. *For more details, please download the PDF or feel free to contact us.

• Optical Experimental Parts
• Other optical parts

At Kawai Optical Co., Ltd., we mainly perform etching processing of metal films and dielectric multilayer films that have been deposited on glass substrates. The maximum substrate size is 200mm x 200mm, and the minimum line width is 10μm. Additionally, depending on the desired etching area, it may be possible to etch in sizes other than those mentioned above, so please feel free to contact us. 【Features】 ■ Compatible with metal films and dielectric multilayer films ■ Can accommodate desired materials and dimensions *For more details, please refer to the catalog or feel free to contact us.

• Optical Experimental Parts
• Other optical parts
• Processing Contract

At Kawai Optical Co., Ltd., we can apply coatings to products of all shapes using our original manufacturing method. Unlike painting, plating, or films, we can utilize two colors: reflected light and transparent light. You can also enjoy variations depending on the color and transparency of the base product. Additionally, coated glass can be used as building materials or stained glass. The combination with lighting equipment creates various effects with reflected and transparent light. 【Features】 ■ Coating using an original manufacturing method ■ Two colors available: reflected light and transparent light ■ Usable as building materials and stained glass ■ Can also be coated on ceramics and other materials *For more details, please refer to the catalog or feel free to contact us.

• Optical Experimental Parts
• Other optical parts

A "beam splitter" is a product mainly used in imaging devices and various optical instruments. We offer two types: a non-polarizing beam splitter that evenly divides incident light, including polarization, with a transmittance to reflectance ratio of 1:1, and a polarizing beam splitter that separates non-polarized incident light into S-polarized (reflected) and P-polarized (transmitted) light with minimal loss. 【Features】 ■ Evenly divides the transmittance to reflectance ratio at 1:1 ■ Separates S-polarized (reflected) and P-polarized (transmitted) light with minimal loss ■ Available in prism type and plate type *For more details, please refer to the catalog or feel free to contact us.

• Optical Experimental Parts
• Other optical parts

Kawai Optical Co., Ltd. has consistently promoted unique research and development in the field of vacuum deposition technology since its establishment. Currently, the formation of thin films through vacuum deposition has become one of the important technologies in the field of optics, and our company provides products that satisfy our customers with excellent technology and engineering. Our metal film coatings include high reflectivity Au and Ag films, as well as various other metal films such as Ni and Cr. We also accommodate coatings such as protective films and anti-reflective coatings, and we can propose materials tailored to the optical properties, conductivity, and decorative aspects according to our customers' applications. 【Features】 ■ Coating of various metal films is possible ■ Accommodates protective films and anti-reflective coatings ■ Proposals for materials tailored to applications *For more details, please refer to our catalog or feel free to contact us.

• Optical Experimental Parts
• Other optical parts

The "Aluminum Surface Mirror" is a metal film coating product that allows for high reflectivity and reliable images without ghosting. By layering a dielectric film on top of the AL layer, durability and optical characteristics can be enhanced. 【Features】 ■ High reflectivity ■ Reliable images can be obtained ■ Durability and optical characteristics are improved by layering dielectric films *For more details, please refer to the catalog or feel free to contact us.

• Optical Experimental Parts
• Other optical parts

"Cold Mirror" is a product designed to protect objects from the heat of a light source by allowing visible light to pass through while reflecting thermal rays. It is mainly used in medical lighting and projectors, and we also offer a type that excels in thermal properties and allows ultraviolet light to pass through. Please feel free to contact us. 【Features】 ■ Reflects visible light while allowing near-infrared rays to pass through ■ Available in two types: UV6 and UV3 *For more details, please refer to the catalog or feel free to contact us.

• Optical Experimental Parts
• Other optical parts

The "Cold Mirror" is a product that reflects only the necessary light in the visible spectrum, protecting the illuminated object from the heat of the light source. It is mainly used in medical lighting and projectors, with a lineup that includes UV6, which reflects 260nm to 500nm while allowing visible and infrared light to pass through, and UV3, which reflects 300nm to 500nm while allowing visible and infrared light to pass through. 【Features】 ■ Reflects visible light while allowing near-infrared light to pass through ■ Available in two types: UV6 and UV3 *For more details, please refer to the catalog or feel free to contact us.

• Optical Experimental Parts
• Other optical parts

A "dichroic filter" is a mirror that separates light of two or more wavelength ranges using a dielectric multilayer film. It is mainly used to extract specific colors from visible light and is utilized in a wide range of products such as projectors and lighting equipment. [Features] - Separates light of two or more wavelength ranges - Extracts specific colors from visible light *For more details, please refer to the catalog or feel free to contact us.

• Other optical parts
• Optical Experimental Parts

A "dichroic mirror" is a mirror that separates light into two or more wavelength ranges using a dielectric multilayer film. It is mainly used to reflect specific colors from visible light and to extract RGB or YMC. Additionally, we also offer a gradient type that varies the film thickness based on the substrate position. 【Features】 ■ Separates light into two or more wavelength ranges ■ Reflects specific colors from visible light ■ Extracts RGB and YMC *For more details, please refer to the catalog or feel free to contact us.

• Other optical parts
• Optical Experimental Parts

The "Anti-Reflective Coating" is a product that contributes to increasing the transmittance of products. It reduces the surface reflectance of glass products and resin molded items, and is widely used mainly in video equipment and camera lenses. Our company will design and propose according to the specifications desired by our customers, so please feel free to contact us. 【Features】 ■ Increases transmittance ■ Reduces surface reflectance *For more details, please refer to the catalog or feel free to contact us.

• Optical Experimental Parts