Optical Filters

Optical Filters Market Outlook

The global optical filters market is projected to reach a valuation of approximately $6.8 billion by 2035, with a robust compound annual growth rate (CAGR) of around 7.5% during the forecast period from 2025 to 2035. This growth can be attributed to the increasing demand for optical filters in various sectors, including consumer electronics, medical devices, and automotive industries. The rising need for high-quality imaging and precision in optical applications is further propelling the adoption of advanced optical filter technologies. Additionally, the rapid advancements in spectroscopy and photonics are contributing significantly to the expansion of the optical filters market. The ongoing innovations aimed at enhancing the performance and functionality of optical filters are also expected to act as a catalyst for market growth.

Growth Factor of the Market

The growth of the optical filters market is primarily driven by the increasing utilization of these devices in numerous applications, especially in consumer electronics where high-definition visuals are paramount. The surge in the production of smartphones, tablets, and televisions that require sophisticated optical filtering technologies is a significant contributor. Furthermore, the automotive sector's ongoing transformation towards increased safety and efficiency through advanced imaging and sensor systems is also creating vast opportunities for optical filters. Medical devices leveraged for imaging and diagnostics are increasingly adopting optical filters, thereby enhancing the precision of medical evaluations. Additionally, the growth of the aerospace and defense industries, with their reliance on high-performance optical systems, continues to enhance the market landscape for optical filters.

Key Highlights of the Market

• The market is projected to grow at a CAGR of 7.5% from 2025 to 2035.
• Consumer electronics is one of the largest application segments driving demand.
• Innovation in optical filter materials is enhancing their performance and durability.
• The automotive industry's shift toward advanced imaging systems presents lucrative opportunities.
• The Asia Pacific region is anticipated to witness the highest growth rate during the forecast period.

By Product Type

Absorptive Filters:

Absorptive filters are widely used in various applications to selectively absorb certain wavelengths of light while allowing others to pass through. These filters are primarily made from colored glass or dyed polymers, and their functionality is highly dependent on the material's specific absorption properties. They are often utilized in photography, lighting design, and other imaging applications where controlling light intensity and color is crucial. The growing demand for high-quality photographic equipment and the increasing popularity of artistic lighting techniques are expected to boost the absorptive filters segment significantly. Furthermore, advancements in materials science are leading to the development of more efficient absorptive filters, which are likely to enhance their adoption across various industries.

Interference Filters:

Interference filters are another prominent type of optical filter, known for their ability to precisely transmit specific wavelengths while reflecting others. These filters typically employ multiple layers of dielectric materials to create interference patterns that determine their transmission characteristics. They are extensively used in scientific research, telecommunications, and medical applications where specific wavelengths must be isolated for various analytical purposes. The continuous innovations in optical coatings and fabrication techniques are contributing to the enhanced performance of interference filters. Moreover, the burgeoning fields of spectroscopy and optical sensing are expected to generate substantial demand for high-quality interference filters in the coming years.

Edge Filters:

Edge filters are designed to separate light into its component wavelengths by selectively transmitting light above or below a specified cutoff wavelength. They are indispensable in applications such as fluorescence microscopy, where precise wavelength separation is required for effective imaging. The increasing demand for advanced imaging techniques in both medical and scientific research is propelling the growth of the edge filters segment. Additionally, the rise of optical communication technologies that rely on wavelength division multiplexing further enhances the need for efficient edge filters. As optical technologies expand rapidly, the edge filters segment is expected to witness a significant surge in adoption, driven by their critical role in ensuring high-quality optical performance.

Notch Filters:

Notch filters are specialized optical filters that effectively block a specific range of wavelengths while allowing others to pass through. This unique characteristic makes them essential in applications such as laser systems, where it is crucial to filter out unwanted wavelengths. Notch filters are used extensively in environmental monitoring, spectroscopy, and biomedical applications, which require precision wavelengths. The increasing emphasis on environmental regulation and monitoring is likely to drive demand for notch filters in various settings. Moreover, innovations in filter design and manufacturing processes are continuously improving the performance and effectiveness of notch filters, thus fostering their broader application across diverse industries.

Dichroic Filters:

Dichroic filters are distinct for their dual-reflective and transmissive properties, allowing them to be utilized in applications requiring significant wavelength separation. These filters are commonly found in applications like projectors, lighting systems, and specialized imaging systems. The growth of the entertainment and media industries, particularly in projection technology, is driving the demand for dichroic filters. Additionally, advancements in coating technologies are enhancing the durability and effectiveness of dichroic filters, ensuring longevity in high-intensity applications. Consequently, the expansion of markets such as virtual reality, augmented reality, and professional video production is expected to significantly contribute to the growth of the dichroic filters segment.

By Application

Consumer Electronics:

The consumer electronics segment is one of the largest markets for optical filters, driven by the demand for high-resolution displays and imaging technologies in devices such as smartphones, televisions, and cameras. As manufacturers strive to produce screens with richer colors and better contrast, the importance of optical filters becomes paramount in enhancing image quality. Moreover, the continuous advancements in display technologies, including OLED and LCD, necessitate the integration of specialized optical filters to optimize performance. The rising trend of smart devices and the increasing investment in consumer electronics technology are significant factors fueling the growth of this segment.

Automotive:

In the automotive sector, optical filters play a vital role in the development of advanced driver-assistance systems (ADAS) and imaging technologies used in vehicles. The incorporation of cameras and sensors for safety features such as lane departure warnings and parking assistance requires high-quality optical filters to ensure accurate image processing. Furthermore, the transition towards electric vehicles (EVs) and autonomous driving technologies is further propelling demand for sophisticated optical systems. As the automotive industry embraces innovative technologies, the optical filters segment is expected to experience substantial growth, with manufacturers increasingly integrating advanced optical filtering solutions into their designs to enhance vehicle safety and performance.

Medical Devices:

The medical devices application of optical filters is rapidly expanding, driven by the increasing reliance on imaging technologies for diagnostics and treatment. Optical filters are essential components in various medical imaging systems, including endoscopy, microscopy, and diagnostic equipment, where precise wavelength selection is crucial for accurate imaging. The growing emphasis on early diagnosis and non-invasive procedures is further propelling the demand for advanced optical filters in medical applications. With ongoing advancements in optical technologies and an increasing focus on improving healthcare outcomes, the medical devices segment is anticipated to witness significant growth in the coming years.

Astronomy:

In astronomy, optical filters are indispensable tools used in telescopes and other observational instruments to isolate specific wavelengths of light from celestial bodies. These filters enable astronomers to conduct detailed studies of stars, galaxies, and other astronomical phenomena by enhancing image quality and contrast. The increasing number of astronomical observatories and a growing interest in space exploration are contributing to the rising demand for optical filters in this sector. Moreover, as technology evolves, the development of more advanced optical filters tailored for specific astronomical applications is expected to facilitate further discoveries and research in the field, driving growth in this application area.

Photography:

Photography relies heavily on optical filters to enhance image quality and control light entering the camera. Filters such as polarizers, neutral density filters, and color correction filters are widely employed by professional photographers to achieve desired effects in their photographs. The growing popularity of photography as both a hobby and a profession, alongside advancements in digital camera technology, is driving demand for optical filters in this application. The rise of social media and the increased sharing of visual content are further influencing consumer behavior, leading to an escalation in the use of specialized optical filters for improved image capture. As the photography industry continues to evolve, the optical filters segment is anticipated to experience sustained growth.

By Distribution Channel

Online Stores:

Online stores have emerged as a prominent distribution channel for optical filters, driven by the convenience of e-commerce and the increasing number of consumers purchasing specialty optical products via digital platforms. The proliferation of online marketplaces and dedicated optical equipment websites allows customers to access a broad range of optical filter products with ease. Additionally, competitive pricing and promotional offers available through online channels are attracting more buyers. As consumers become more comfortable with online shopping, the optical filters segment is likely to see continued growth through this distribution channel, supported by innovations in e-commerce technology and logistics.

Specialty Stores:

Specialty stores play a crucial role in the distribution of optical filters, particularly for professional users such as photographers, scientists, and engineers who require expert guidance in selecting the appropriate optical products for their applications. These stores often offer a curated selection of high-quality filters and provide personalized customer service, which is invaluable for customers seeking specific solutions. The strong relationships established between specialty retailers and manufacturers foster trust and brand loyalty, encouraging repeat purchases. As the demand for customized and advanced optical filters increases, specialty stores are poised to maintain their relevance in the market.

Direct Sales:

Direct sales channels are significant for the optical filter market, especially for manufacturers who engage in business-to-business transactions with industries that require optical filters for specialized applications. By selling directly to consumers or businesses, manufacturers can ensure better control over product quality and customer service. This approach also allows for tailored solutions that meet specific customer requirements, which is particularly important in advanced sectors such as medical devices and industrial applications. As industries evolve and the demand for customized optical solutions grows, direct sales will play an increasingly pivotal role in the distribution of optical filters.

Distributors:

Distributors serve as intermediaries between manufacturers and end-users, facilitating the efficient supply of optical filters to a broad range of customers. They often carry a diverse inventory of products, which allows them to cater to various industrial needs and ensure timely delivery. Distributors also provide essential services such as technical support and product training, enhancing customer satisfaction. The growth of the optical filters market will be supported by the continued expansion of distributor networks, allowing manufacturers to reach wider audiences and increase their market presence effectively. As the demand for optical filters extends across multiple sectors, distributors will remain a vital component of the supply chain.

By Material Type

Glass:

Glass is one of the most commonly used materials for optical filters, known for its excellent optical properties and durability. Glass filters are designed to provide high transmission rates while blocking undesired wavelengths, making them suitable for a wide range of applications, including photography, scientific research, and industrial processes. Advances in glass manufacturing technologies have led to the development of specialized optical glasses that enhance filter performance. The growing demand for high-precision optical systems in various industries continues to drive the adoption of glass-based optical filters, making them a cornerstone of the optical filters market.

Polymer:

Polymer-based optical filters are increasingly gaining popularity due to their lightweight nature and flexibility compared to traditional glass filters. The ability to produce filters in diverse shapes and sizes using polymer materials makes them particularly appealing for applications in consumer electronics and portable devices. Furthermore, advancements in polymer chemistry are leading to the development of filters with enhanced performance characteristics, including better thermal stability and resistance to environmental factors. As manufacturers continue to integrate optical filters into compact devices, the polymer segment is expected to experience robust growth, driven by the versatility and adaptability of polymer materials.

Metal:

Metal materials are primarily used in optical filters for their reflective properties and ability to attenuate specific wavelengths. Metal filters are commonly used in applications such as light modulation and beam splitting, where precise control of light is required. The growing demand for advanced optical systems in telecommunications and industrial applications is supporting the adoption of metal optical filters. As technology continues to evolve, innovations in metal coatings and techniques are enhancing the performance of metal filters, ensuring their relevance in high-demand sectors. Consequently, the metal segment is likely to maintain a steady growth trajectory in the optical filters market.

Semiconductor:

Semiconductor materials are increasingly finding applications in optical filters due to their unique electronic and optical properties. These materials enable the design of filters that can be finely tuned to specific wavelengths, making them suitable for applications in telecommunications and data processing. The rise of photonic devices and integrated optics is further driving the demand for semiconductor-based optical filters. As the technology landscape evolves, the growth of optical communication systems and the increasing emphasis on high-speed data transmission are expected to propel the semiconductor optical filters segment, positioning it as a critical component in the optical filters market.

Liquid Crystal:

Liquid crystal optical filters offer unique advantages, including the ability to dynamically change their optical properties in response to external stimuli such as electric fields. This characteristic makes them particularly appealing for applications in displays and adaptive optics. The increasing demand for advanced display technologies, including LCD and OLED screens, is driving the adoption of liquid crystal optical filters in consumer electronics. Furthermore, innovations in liquid crystal technologies are leading to the development of more efficient and responsive filters, enhancing their potential applications in various fields. As the trend towards dynamic optical systems continues, the liquid crystal segment is expected to experience significant growth.

By Region

The North American region is one of the leading markets for optical filters, accounting for a substantial share of the global market. This dominance can be attributed to the presence of advanced technological industries, particularly in the United States and Canada, where there is significant investment in research and development. The high demand for optical filters in sectors such as healthcare, telecommunications, and consumer electronics facilitates continuous growth in this region. Furthermore, the focus on enhancing optical performance in imaging systems drives innovation and adoption of new optical filter technologies. It is projected that the North American optical filters market will grow at a CAGR of approximately 6.8% over the forecast period.

Europe also represents a significant portion of the optical filters market, driven by advancements in industries such as automotive, aerospace, and healthcare. The increased focus on high-quality imaging technologies and stringent regulatory requirements for environmental monitoring and safety are propelling demand for optical filters across multiple applications. Additionally, the region's commitment to research and development in photonics and optics technology is fostering innovation and growth in the optical filters market. The European market is expected to witness steady growth, with an anticipated CAGR of around 6.5% during the forecast period. Meanwhile, the Asia Pacific region is expected to register the highest growth rate, driven by rapid industrialization and increasing investments in consumer electronics and automotive sectors.

Opportunities

One of the most significant opportunities in the optical filters market lies in the increasing integration of advanced technologies, such as augmented reality (AR) and virtual reality (VR), into consumer products. These technologies demand high-performance optical systems, which in turn require sophisticated optical filters to ensure optimal visual quality. The continued growth of these markets presents a unique opportunity for manufacturers to develop innovative optical filter solutions tailored to the specific requirements of AR and VR applications. As these technologies continue to gain traction in various sectors, including gaming, education, and training, the potential for market expansion in this niche is substantial.

Another promising opportunity for the optical filters market is the ongoing advancements in sustainable and eco-friendly materials for filter production. With increasing awareness of environmental issues, there is a growing demand for products that minimize ecological impacts. Manufacturers are now focusing on developing optical filters made from recyclable and biodegradable materials to meet emerging consumer preferences. This trend towards sustainability not only aligns with global efforts to reduce waste and pollution but also opens up new market segments that prioritize green technologies. The ability to innovate and adapt to these changing consumer expectations will be critical for companies seeking to maintain a competitive edge in the evolving optical filters market.

Threats

Despite the promising growth prospects of the optical filters market, several threats could potentially hinder its development. One of the major challenges comes from the rapid pace of technological advancements, which demands continuous innovation and adaptation from manufacturers. Companies that fail to keep up with the latest trends and technologies risk losing their competitive edge in the market. Moreover, the increasing competition from newer entrants and alternative technologies may pose additional challenges, forcing established players to invest heavily in research and development to maintain their market positions. The ever-evolving landscape of consumer preferences and the demand for customization also add pressure on manufacturers to rapidly innovate.

Another significant threat to the optical filters market is the volatility of raw material prices, particularly for specialized materials like glass and polymers. Fluctuations in the costs of these materials can impact production expenses and, consequently, the pricing strategies adopted by manufacturers. Additionally, supply chain disruptions, whether due to geopolitical tensions, natural disasters, or pandemics, can affect the availability of essential materials required for filter production. Companies must therefore develop robust supply chain strategies and risk management practices to mitigate the impact of raw material price volatility on their operations.

Competitor Outlook

• Thorlabs, Inc.
• Edmund Optics Inc.
• Newport Corporation
• Hoya Corporation
• Schott AG
• Corning Incorporated
• OptoSigma Corporation
• Omega Optical, Inc.
• Chroma Technology Corp.
• Melles Griot (IDEX Corporation)
• Asahi Glass Co., Ltd.
• Spectra-Physics (MKS Instruments)
• Laser Components GmbH
• Optical Filters Ltd.
• Rochester Optical Corporation

The competitive landscape of the optical filters market is marked by the presence of both established players and emerging companies striving to capture market share through innovation and product differentiation. Key players in this market are focusing on enhancing their product offerings by investing in research and development to create advanced optical filter technologies. Furthermore, strategic partnerships and collaborations among companies are becoming increasingly common as they seek to leverage each other's strengths and capabilities to expedite innovation and market penetration. This collaborative approach allows companies to address diverse customer needs and expand their portfolios effectively.

Some of the most prominent companies in the optical filters market include Thorlabs, Inc., known for its extensive range of high-quality optical components, including filters, lenses, and mirrors. The company’s commitment to innovation and customer service has solidified its position as a market leader. Another key player, Edmund Optics Inc., offers a wide variety of optical filters catering to diverse applications and industries, backed by strong technical support and expertise. Companies like Hoya Corporation and Schott AG have also established themselves as leaders in the optical filters market, leveraging their vast experience and advanced manufacturing capabilities to deliver high-performance optical solutions across various sectors.

New entrants in the market are also gaining traction, driven by advancements in technology and shifts in consumer preferences. For instance, companies specializing in the production of polymer-based optical filters are capitalizing on the growing demand for lightweight and flexible filtering solutions in consumer electronics and portable devices. As the optical filters market continues to evolve, it is expected that competition will intensify, with emerging companies introducing innovative products aimed at addressing specific market needs. The market dynamics will likely be shaped by ongoing technological advancements, shifts in consumer behavior, and the strategic initiatives undertaken by key players to secure their positions in this rapidly changing landscape.

• 1 Appendix

  • 1.1 List of Tables
  • 1.2 List of Figures

• 2 Introduction

  • 2.1 Market Definition
  • 2.2 Scope of the Report
  • 2.3 Study Assumptions
  • 2.4 Base Currency & Forecast Periods

• 3 Market Dynamics

  • 3.1 Market Growth Factors
  • 3.2 Economic & Global Events
  • 3.3 Innovation Trends
  • 3.4 Supply Chain Analysis

• 4 Consumer Behavior

  • 4.1 Market Trends
  • 4.2 Pricing Analysis
  • 4.3 Buyer Insights

• 5 Key Player Profiles

  • 5.1 Schott AG
    • 5.1.1 Business Overview
    • 5.1.2 Products & Services
    • 5.1.3 Financials
    • 5.1.4 Recent Developments
    • 5.1.5 SWOT Analysis
  • 5.2 Thorlabs, Inc.
    • 5.2.1 Business Overview
    • 5.2.2 Products & Services
    • 5.2.3 Financials
    • 5.2.4 Recent Developments
    • 5.2.5 SWOT Analysis
  • 5.3 Hoya Corporation
    • 5.3.1 Business Overview
    • 5.3.2 Products & Services
    • 5.3.3 Financials
    • 5.3.4 Recent Developments
    • 5.3.5 SWOT Analysis
  • 5.4 Edmund Optics Inc.
    • 5.4.1 Business Overview
    • 5.4.2 Products & Services
    • 5.4.3 Financials
    • 5.4.4 Recent Developments
    • 5.4.5 SWOT Analysis
  • 5.5 Newport Corporation
    • 5.5.1 Business Overview
    • 5.5.2 Products & Services
    • 5.5.3 Financials
    • 5.5.4 Recent Developments
    • 5.5.5 SWOT Analysis
  • 5.6 Omega Optical, Inc.
    • 5.6.1 Business Overview
    • 5.6.2 Products & Services
    • 5.6.3 Financials
    • 5.6.4 Recent Developments
    • 5.6.5 SWOT Analysis
  • 5.7 Corning Incorporated
    • 5.7.1 Business Overview
    • 5.7.2 Products & Services
    • 5.7.3 Financials
    • 5.7.4 Recent Developments
    • 5.7.5 SWOT Analysis
  • 5.8 Optical Filters Ltd.
    • 5.8.1 Business Overview
    • 5.8.2 Products & Services
    • 5.8.3 Financials
    • 5.8.4 Recent Developments
    • 5.8.5 SWOT Analysis
  • 5.9 Asahi Glass Co., Ltd.
    • 5.9.1 Business Overview
    • 5.9.2 Products & Services
    • 5.9.3 Financials
    • 5.9.4 Recent Developments
    • 5.9.5 SWOT Analysis
  • 5.10 Laser Components GmbH
    • 5.10.1 Business Overview
    • 5.10.2 Products & Services
    • 5.10.3 Financials
    • 5.10.4 Recent Developments
    • 5.10.5 SWOT Analysis
  • 5.11 OptoSigma Corporation
    • 5.11.1 Business Overview
    • 5.11.2 Products & Services
    • 5.11.3 Financials
    • 5.11.4 Recent Developments
    • 5.11.5 SWOT Analysis
  • 5.12 Chroma Technology Corp.
    • 5.12.1 Business Overview
    • 5.12.2 Products & Services
    • 5.12.3 Financials
    • 5.12.4 Recent Developments
    • 5.12.5 SWOT Analysis
  • 5.13 Rochester Optical Corporation
    • 5.13.1 Business Overview
    • 5.13.2 Products & Services
    • 5.13.3 Financials
    • 5.13.4 Recent Developments
    • 5.13.5 SWOT Analysis
  • 5.14 Melles Griot (IDEX Corporation)
    • 5.14.1 Business Overview
    • 5.14.2 Products & Services
    • 5.14.3 Financials
    • 5.14.4 Recent Developments
    • 5.14.5 SWOT Analysis
  • 5.15 Spectra-Physics (MKS Instruments)
    • 5.15.1 Business Overview
    • 5.15.2 Products & Services
    • 5.15.3 Financials
    • 5.15.4 Recent Developments
    • 5.15.5 SWOT Analysis

• 6 Market Segmentation

  • 6.1 Optical Filters Market, By Application
    • 6.1.1 Consumer Electronics
    • 6.1.2 Automotive
    • 6.1.3 Medical Devices
    • 6.1.4 Astronomy
    • 6.1.5 Photography
  • 6.2 Optical Filters Market, By Product Type
    • 6.2.1 Absorptive Filters
    • 6.2.2 Interference Filters
    • 6.2.3 Edge Filters
    • 6.2.4 Notch Filters
    • 6.2.5 Dichroic Filters
  • 6.3 Optical Filters Market, By Material Type
    • 6.3.1 Glass
    • 6.3.2 Polymer
    • 6.3.3 Metal
    • 6.3.4 Semiconductor
    • 6.3.5 Liquid Crystal
  • 6.4 Optical Filters Market, By Distribution Channel
    • 6.4.1 Online Stores
    • 6.4.2 Specialty Stores
    • 6.4.3 Direct Sales
    • 6.4.4 Distributors

• 7 Competitive Analysis

  • 7.1 Key Player Comparison
  • 7.2 Market Share Analysis
  • 7.3 Investment Trends
  • 7.4 SWOT Analysis

• 8 Research Methodology

  • 8.1 Analysis Design
  • 8.2 Research Phases
  • 8.3 Study Timeline

• 9 Future Market Outlook

  • 9.1 Growth Forecast
  • 9.2 Market Evolution

• 10 Geographical Overview

  • 10.1 Europe - Market Analysis
    • 10.1.1 By Country
      • 10.1.1.1 UK
      • 10.1.1.2 France
      • 10.1.1.3 Germany
      • 10.1.1.4 Spain
      • 10.1.1.5 Italy
  • 10.2 Asia Pacific - Market Analysis
    • 10.2.1 By Country
      • 10.2.1.1 India
      • 10.2.1.2 China
      • 10.2.1.3 Japan
      • 10.2.1.4 South Korea
  • 10.3 Latin America - Market Analysis
    • 10.3.1 By Country
      • 10.3.1.1 Brazil
      • 10.3.1.2 Argentina
      • 10.3.1.3 Mexico
  • 10.4 North America - Market Analysis
    • 10.4.1 By Country
      • 10.4.1.1 USA
      • 10.4.1.2 Canada
  • 10.5 Optical Filters Market by Region
  • 10.6 Middle East & Africa - Market Analysis
    • 10.6.1 By Country
      • 10.6.1.1 Middle East
      • 10.6.1.2 Africa

• 11 Global Economic Factors

  • 11.1 Inflation Impact
  • 11.2 Trade Policies

• 12 Technology & Innovation

  • 12.1 Emerging Technologies
  • 12.2 AI & Digital Trends
  • 12.3 Patent Research

• 13 Investment & Market Growth

  • 13.1 Funding Trends
  • 13.2 Future Market Projections

• 14 Market Overview & Key Insights

  • 14.1 Executive Summary
  • 14.2 Key Trends
  • 14.3 Market Challenges
  • 14.4 Regulatory Landscape

Segments Analyzed in the Report

The global Optical Filters market is categorized based on

By Product Type

• Absorptive Filters
• Interference Filters
• Edge Filters
• Notch Filters
• Dichroic Filters

By Application

• Consumer Electronics
• Automotive
• Medical Devices
• Astronomy
• Photography

By Distribution Channel

• Online Stores
• Specialty Stores
• Direct Sales
• Distributors

By Material Type

• Glass
• Polymer
• Metal
• Semiconductor
• Liquid Crystal

By Region

• North America
• Europe
• Asia Pacific
• Latin America
• Middle East & Africa

Key Players

• Thorlabs, Inc.
• Edmund Optics Inc.
• Newport Corporation
• Hoya Corporation
• Schott AG
• Corning Incorporated
• OptoSigma Corporation
• Omega Optical, Inc.
• Chroma Technology Corp.
• Melles Griot (IDEX Corporation)
• Asahi Glass Co., Ltd.
• Spectra-Physics (MKS Instruments)
• Laser Components GmbH
• Optical Filters Ltd.
• Rochester Optical Corporation