京浜光膜工業 List of Products and Services

"Understanding in 5 Minutes! Basic Knowledge of Thin Films Produced by Vacuum Deposition Method" We will introduce thin films produced by the vacuum deposition method. We will cover the basics such as "What is vacuum deposition?", "Characteristics (functions) obtained", and "Essential elements for fabricating thin films"!

• Optical Experimental Parts

There are two main types of thin films. One is thin films with optical properties. Common examples include anti-reflective coatings on glasses and camera lenses. In the case of lenses without anti-reflective coatings, about 90% of the light passing through the lens cannot reach the eye or sensor. However, by applying an anti-reflective (AR) coating, it becomes possible to transmit nearly 100% of the light while also reducing the reflection from the lens. Optical properties are not limited to the control of visible light. Anti-reflective coatings targeting near-infrared light are also used on the end faces of optical fibers in high-speed communication networks. This is necessary to transmit infrared information with minimal loss and at high speeds. The other type is functional thin films. For example, to address the issue of water droplets adhering to camera lenses when it rains, there are functional thin film technologies such as hydrophobic and hydrophilic coatings. Some transparent thin films have functional properties, while others can impart color. The thickness of surface treatment technologies like plating ranges from 5 to 10 μm, whereas thin films are overwhelmingly thinner, ranging from several tens of nanometers to several hundred nanometers. Additionally, thin films created through deposition possess a luxurious gloss that is not found in plating.

• Vacuum Equipment

Our company has been engaged in the deposition of optical thin films using vacuum deposition methods for over 60 years. This document provides a detailed explanation of the basics of thin films using vacuum deposition methods, including an overview and the advantages of introduction, based on our know-how and experience. You can learn the fundamentals of thin films using vacuum deposition methods in this single volume. If you are facing challenges with thin films or want to gain a solid understanding of vacuum deposition methods, please take a look. [Contents] ■ What is vacuum deposition? ■ About IAD (Ion Assisted Deposition) ■ Materials for thin films ■ Properties (functions) obtained ■ Elements necessary for fabricating thin films *If you are interested, you can check the PDF document for more information.

• Vacuum Equipment

It is possible to deposit films on three-dimensional objects due to the multi-angular deposition angles in a low vacuum environment. *For more details, please refer to the PDF document or feel free to contact us.*

• mirror
• Other optical parts

It is possible to deposit coatings in a wide range of sizes, from small pieces to large mirrors.

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• Other optical parts
• Optical Experimental Parts

In the case of a surface made only of gold, there is a concern about scratches from cleaning, but by using gold plus a protective film, a more durable high-reflective film is achieved.

• mirror
• Other optical parts
• Optical Experimental Parts

We are capable of performing measurements such as spectroscopic measurement, optical density measurement, film thickness measurement, shape measurement, and defect observation. For products that we have coated in-house, we will attach measurement data for quality confirmation purposes and deliver it with the product. You can also request measurements for products you already have. In addition to measurements, we will evaluate the durability performance of the products using various environmental testing equipment, so please inform us of the durability evaluation items required for the product when placing a coating order. We also accept evaluations for both our in-house coated products and the products you have.

• Weather resistance test
• Coating thickness gauge
• Contract measurement

I want to use optical components, but I can't decide on the optimal specifications... Other companies have turned me down... I want to know the incident angle characteristics... If you are having trouble with optical design, please consult us. We can control dielectric materials and metal thin films at the nanometer level. For new product contracts, in order to achieve optical characteristics and durability, we simulate the results of consultations with customers regarding the selection of substrates and deposition materials, allowing for a product review before placing an order.

• Prototype Services

We have two domestic locations and can provide stable contract manufacturing of the thin film products you desire. Φ1800 vacuum deposition units: many, Φ1300 vacuum deposition units: many, Φ850 vacuum deposition unit: 1, low vacuum sputtering machine: 1. The main vacuum deposition units are all multilayer film machines equipped with ion assist mechanisms. We possess a large number of medium-sized machines that are frequently used for prototyping, as well as the largest chamber size in Japan for mass production, the φ1800 unit, enabling cost-effective production. Additionally, we ensure compatibility between prototype and mass production machines, allowing for a smooth transition from prototyping to mass production. We can quickly realize product development from design to commercialization in Japan based on your desired specifications.

• Other optical parts
• Contract manufacturing
• Optical Experimental Parts

This is a filter that prevents unnecessary ultraviolet and near-infrared rays from reaching the image sensor and allows only the necessary wavelengths (visible light) to pass through. We can produce UV cut filters that block only ultraviolet rays, IR cut filters that block only near-infrared rays, and UV/IR cut filters that block both ultraviolet and near-infrared rays. *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other optical parts

The surface coating maintains a contact angle of over 100°, repelling water, oil, and other substances. *For more details, please refer to the PDF document or feel free to contact us.*

• Surface treatment contract service
• Other optical parts

The AR (Anti-Reflection) coating, also known as an anti-reflective film, is a coating that prevents reflection on the surface of the substrate and enhances transmittance. Typically, the transmittance of glass substrates is around 92%, but by applying this AR coating to both sides, it is possible to achieve a transmittance of over 99%. It is also possible to coat materials that are sensitive to heat, such as fiber and resin substrates, at low temperatures. *For more details, please refer to the PDF document or feel free to contact us.*

• Surface treatment contract service
• Other optical parts

I want a higher reflectivity for ultraviolet rays... I want a durable ultraviolet reflective mirror... For such concerns, please consider our UV (ultraviolet) mirrors.

• mirror

In a vacuum deposition device, decoration on large flat workpieces is possible. In addition to any single color, gradients are also possible.

• mirror

Our company's silver mirror features a hybrid structure of silver and dielectric utilizing multilayer film technology developed over many years, offering higher reflectivity and angle dependence than aluminum mirrors.

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We would like to introduce the 'Cold Mirror' handled by Keihin Kōbaku Kōgyō. This product features a polished glass substrate with a multilayer dielectric reflective coating deposited on one side. Although it has inferior angle-dependent performance compared to metal mirrors such as Al and Ag, it is characterized by a high absolute reflectivity and almost no absorption. 【Specifications (partial)】 ■ Product configuration: Single-sided coated product ■ Coating material: TiO2 + SiO2 ■ Substrate: Polished glass ■ Size: 114 × 80 mm ■ Thickness: 1.9 mm (t) *For more details, please refer to the PDF document or feel free to contact us.

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• Other optical parts
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We would like to introduce the 'BPF' handled by Keihin Optical Film Industries. This product is based on non-polished glass with a multilayer film deposited on one side and an AR coating on the other side. The product is a bandpass filter for 850nm, designed to transmit only wavelengths around 850nm while reflecting other wavelengths. 【Specifications (partial)】 ■ Product configuration: Double-sided coated product ■ Film materials: TiO2 + SiO2 ■ Substrate: D263Teco ■ Size: 76×76mm ■ Thickness: 0.3mm (t) *For more details, please refer to the PDF document or feel free to contact us.

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• Other optical parts
• others

The "IRCF" is a product that has an AR coating on one side and a UVIR cut coating on the other side, based on non-polished glass. It only transmits visible light while blocking ultraviolet wavelengths and near-infrared wavelengths up to 1150nm. Please feel free to contact us when you need assistance. 【Specifications (partial)】 ■ Product composition: Both sides (IRCF/AR) coated product ■ Coating materials: TiO2+SiO2/- ■ Substrate: D263Teco ■ Size: 76×76mm ■ Thickness: 0.3mm (t) *For more details, please refer to the PDF document or feel free to contact us.

• mirror
• Other optical parts
• others

"AR" is a product that has a reflection-reducing film deposited on one side of a glass substrate. It is possible to reduce reflection (improve transmittance) for visible light wavelengths. Please feel free to contact us when you need assistance. 【Specifications (partial)】 ■ Product composition: Single-sided deposited product ■ Film material: Ta2O5 + SiO2 ■ Substrate: B270i ■ Size: 76×76mm ■ Thickness: 1.0mm (t) *For more details, please refer to the PDF document or feel free to contact us.

• mirror
• Other optical parts
• others

If you want to achieve visibility while simultaneously visualizing images, please consider our half mirror!

• mirror
• Other optical parts
• Optical Experimental Parts

Our laser mirrors are designed with high laser resistance, featuring film materials selected for each wavelength band and deposited under specialized conditions. *For more details, please refer to the PDF document or feel free to contact us.*

• mirror
• Other optical parts

The "dielectric multilayer film" is a product that excels in absolute reflectivity, constructed with a multilayer of dielectrics over metal films such as Al and Ag. Custom designs are possible based on the angle of light incidence, polarization characteristics, wavelength range, etc. It is also referred to as a cold mirror because it does not contain infrared regions that include heat in the reflected light. 【Features】 ■ Multilayer structure of dielectrics over metal films such as Al and Ag ■ Excellent absolute reflectivity ■ No infrared region containing heat in the reflected light ■ Custom designs possible based on angle of light incidence, polarization characteristics, wavelength range, etc. *For more details, please refer to the PDF document or feel free to contact us.

• mirror
• Other optical parts

We would like to introduce our "Multilayer Film Filter." This product is a filter that has high transmittance and reflectance across the entire visible light spectrum. It has the characteristic of separating the necessary wavelengths into transmittance and reflectance, and is also referred to as a dichroic filter. 【Product Lineup】 ■ Blue Transmittance Filter ■ Green Transmittance Filter ■ Red Transmittance Filter ■ Blue Reflective Mirror (Yellow Transmittance Filter) ■ Green Reflective Mirror (Blue and Red Transmittance Filters) ■ Red Reflective Mirror (Blue and Green Transmittance Filters) *For more details, please refer to the PDF document or feel free to contact us.

• mirror
• Other optical parts

Our company processes and sells cut and polished products of "color glass filters" made by SCHOTT and HOYA. Applications include C.C filters, BPF, LPF, SPF, ND, etc. We also perform "ball lens processing" with a material of BK-7, accommodating shapes from φ1 to φ10 with sphericity ≦1μ, which is recommended for applications such as endoscopes. 【Features】 ■ Color Glass Filters - Made by SCHOTT and HOYA - C.C filters (BG-18 filter for visual sensitivity correction), BPF, LPF, SPF, ND, etc. ■ Ball Lens Processing - Shapes from φ1 to φ10 with sphericity ≦1μ - Material BK-7 - For endoscopes, etc. *For more details, please refer to the PDF document or feel free to contact us.

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• Other optical parts

Our company's "microfabrication" technology meets the increasingly sophisticated needs of our customers. It is well-suited for applications such as two-wavelength and three-wavelength pickups, communication devices, digital cameras, and solar cells. By leveraging our optical thin film processing technology and know-how, we enable the speedy provision of prototypes and contribute to short delivery times. Please feel free to contact us when you need assistance. [Overview] ■ Responding to the increasingly sophisticated needs of our customers ■ Two-wavelength and three-wavelength pickups, communication devices, digital cameras, solar cells, etc. *For more details, please refer to the PDF materials or feel free to contact us.

• Processing Contract

We would like to introduce our "Non-Shift Filter/Mirror." A film that is difficult to shift (change) in its characteristics is called a non-shift film. By using IAD (Ion Assisted Deposition) during deposition, it is possible to form a film at a lower temperature compared to conventional deposition (EB deposition). IAD films are dense and less affected by temperature and humidity, which can further enhance the reliability of optical devices. 【Features】 ■ Uses IAD (Ion Assisted Deposition) during deposition ■ Allows film formation at lower temperatures compared to conventional deposition (EB deposition) ■ IAD films are dense and less affected by temperature and humidity ■ Can further enhance the reliability of optical devices *For more details, please refer to the PDF document or feel free to contact us.

• mirror
• Other optical parts

This product is a multilayer film special filter used to separate and synthesize light in optical communication devices. Our company leverages optical thin film processing technology and know-how to enable speedy provision of prototypes, contributing to short delivery times. Please feel free to contact us when you need assistance. 【Features】 ■ Used in optical communication devices ■ Multilayer film special filter for separating and synthesizing light *For more details, please refer to the PDF document or feel free to contact us.

• mirror
• Other optical parts

A "polarizing beam splitter" is a mirror (filter) that separates light of specific wavelengths into two or more parts. It is capable of efficiently separating the P wave and S wave components of polarized light. The substrate shapes include prism type and flat type. Products coated on prisms or flat plates are used in polarization modules for laser light or monochromatic light. 【Features】 ■ Separates light of specific wavelengths into two or more parts ■ Efficiently separates the P wave and S wave components of polarized light ■ Substrate shapes include prism type and flat type *For more details, please refer to the PDF document or feel free to contact us.

• mirror
• Other optical parts

This product is a high-reflectivity mirror coated with a dielectric film on an aluminum reflective film (R≧90%). The enhanced reflectivity version has R≧94%, and the super enhanced reflectivity version has R≧97%. It can be used in applications such as high-speed digital facsimiles, laser printers, digital copiers, and various office automation equipment. 【Features】 ■ Dielectric film coated on aluminum reflective film (R≧90%) ■ Enhanced reflectivity version R≧94% ■ Super enhanced reflectivity version R≧97% *For more details, please refer to the PDF document or feel free to contact us.

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• Other optical parts

This product is a multi-filter device used for reading and writing on BD, DVD, CD, and various recorders. It is a filter that minimizes the characteristic changes caused by laser heat to zero, allowing for stable monitor light levels. Please feel free to contact us when you need assistance. 【Features】 ■ Used for reading and writing on BD, DVD, CD, and various recorders ■ Minimizes characteristic changes caused by laser heat to zero ■ A filter that provides stable monitor light levels *For more details, please refer to the PDF document or feel free to contact us.

• mirror
• Other optical parts

The "dichroic mirror/filter" is a mirror (filter) that reflects (transmits) light of specific wavelengths while transmitting (reflecting) other light. It is possible to separate and synthesize the three primary colors of blue (B), green (G), and red (R) from white light. Additionally, colors such as yellow (Y), magenta (M), and cyan (C) can be obtained through vertical incidence with the filter. 【Features】 ■ Reflects (transmits) light of specific wavelengths while transmitting (reflecting) other light ■ Capable of separating and synthesizing the three primary colors of blue (B), green (G), and red (R) from white light ■ Colors can be obtained through vertical incidence 　・Yellow (Y), Magenta (M), Cyan (C) *For more details, please refer to the PDF document or feel free to contact us.

• mirror
• Other optical parts

This product is a filter that only transmits specific wavelengths and cuts out other unwanted light. It enables the creation of high-precision filters compatible with infrared, visible light, and near-infrared. Custom designs for transmission wavelengths (passbands) can be made according to customer specifications, and filter specifications with low angular dependence can also be considered. Recently, applications for LiDAR and motion control have been increasing. 【Features】 ■ Only transmits specific wavelengths and cuts out other unwanted light ■ Enables the creation of high-precision filters compatible with infrared, visible light, and near-infrared ■ Custom designs for transmission wavelengths (passbands) can be made ■ Consideration for filter specifications with low angular dependence ■ Bandpass filters for 2 wavelengths or 4 wavelengths can also be considered *For more details, please refer to the PDF document or feel free to contact us.

• Other optical parts

The "AR Coating" is a coating designed to eliminate surface reflections on substrates (such as glass and resin) and enhance transmittance. It can be applied to substrates that are prone to degradation from overheating and to optical communication components that require long-term reliability, allowing for custom designs based on light incidence angles, polarization characteristics, and wavelength ranges. It can be used for various applications such as cover glass, lenses, glasses, and sensor components. 【Features】 ■ Reduces reflected light from the substrate surface ■ Eliminates surface reflections on the substrate and enhances transmittance ■ Can be applied to optical communication components that require long-term reliability ■ Custom designs based on light incidence angles, polarization characteristics, and wavelength ranges are possible *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

This product is a filter that cuts ultraviolet (UV) and near-infrared (IR) light. It allows visible light (visible spectrum) to pass through and is primarily used in the sensor part of cameras, as infrared light negatively affects images. Despite having a high transmission rate across the entire visible light range, this product possesses strong characteristics for blocking infrared light from various light sources and has the ability to block ultraviolet light that accelerates the degradation of liquid crystals. 【Features】 ■ Cuts ultraviolet (UV) and near-infrared (IR) light ■ Allows visible light (visible spectrum) to pass through ■ Primarily used in the sensor part of cameras, as infrared light negatively affects images ■ Combines heat prevention measures for various light sources with strong infrared spectra and blocking characteristics for ultraviolet light that accelerates liquid crystal degradation *For more details, please refer to the PDF document or feel free to contact us.

• Other optical parts

The "Stress-Free Coating" is a multilayer film that brings the warping (stress) of the substrate as close to zero as possible. In typical multilayer films, the film itself generates a pulling force (stress) on the substrate, leading to the phenomenon of warping. Through our unique technology development, we have achieved a film formation method that minimizes warping even with a single-sided multilayer film coating. [Features] - Achieved a film formation method that minimizes warping even with a single-sided multilayer film coating - Excellent weather resistance - Passed UV resistance test (10,000 mJ/cm² exposure) and annealing test (250°C for 2 hours) - Outstanding flatness *For more details, please refer to the PDF document or feel free to contact us.

• Circuit board design and manufacturing

This product is a metal mirror made using Ag, a deposition material with the highest level of reflectivity in the visible range. It achieves excellent environmental durability. It is widely used in various optical devices such as LED lighting, solar thermal generators, microscopes, and projectors. 【Features】 ■ Applicable to various optical devices ■ Excellent environmental characteristics ■ Compatible with large substrates ■ Achieved 1000 hours of high temperature and high humidity testing *For more details, please refer to the PDF materials or feel free to contact us.

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