What Natsume does

Natsume Optical Corporation is a privately held Japanese precision optics manufacturer founded in 1947 in Nagano, Japan, specializing in nano-precision glass optical elements for semiconductor lithography, aerospace, and scientific research applications. Its core product portfolio comprises EUV mirrors (13.5nm wavelength) and DUV optics (193nm–355nm) — including ellipsoidal mirrors, aspherical and cylindrical lenses, spherical lenses, axicons, freeform optics, prisms, fly-eye lenses, ball lenses, and optical sub-assemblies — manufactured at its Iida headquarters and dedicated Technology Center (established 2005) equipped with MRF polishing machines and Class 1000 cleanrooms. The company's technical differentiation rests on two granted patents (a proprietary interferometer for cylindrical-lens measurement and an MRF-based polishing method), 75+ years of accumulated process know-how, and an in-house measurement capability it claims competitors lack.

The company operates a pure enterprise B2B model: all optics are custom-manufactured against customer specifications, priced via bespoke quotes, and sold directly to tier-1 buyers including semiconductor lithography OEMs (ZEISS, recognized via Supplier Award 2023), space agencies (JAXA for the JUICE mission's GALA instrument; ESA partnership), and synchrotron research institutions (SPring-8/RIKEN, University of Tokyo). Go-to-market is enterprise field sales supplemented by an event-driven channel — regular exhibition at SPIE (USA), LASER World of PHOTONICS (Germany), and OPTICS Taiwan. Revenue streams span custom optical element sales, optical design services using ZEMAX/CAD, optical sub-assembly sales, and DUV-to-IR / soft X-ray coating services. Natsume is ISO 9001:2015 and ISO 14001:2015 certified and is currently led by President Kunihiko Hosoe, with no disclosed external investment, parent company, or M&A activity.

Name

Natsume

Legal name

NATSUME OPTICAL CORPORATION

Website

https://natsume-optics.com

Company type

Private

Founded year

1947

Operating status

Operating

Headcount range

11–50 employees

Short description

Natsume Optical Corporation is a privately held Japanese precision optics manufacturer (founded 1947, ~270 employees) producing nano-precision EUV and DUV optical elements, freeform optics, and lens assemblies for semiconductor lithography, aerospace, and synchrotron research customers worldwide.

Ownership category

akta.pro rank

Product category

Precision Optical Components Manufacturing

NAICS

Semiconductor and Other Electronic Component Manufacturing (33441)

SIC

Optical Instruments & Lenses (3827), Electronic Components, Nec (3679)

akta.pro primary industry

Optics & Laser/Light Engine Components (Lenses, Galvos, Laser Modules, UV Engines) (IMAAAIAC)

akta.pro secondary industries

Optoelectronics & Photonics (LED/Laser/Optical ICs) (HDAHAAAH), Machine Vision & Inspection Lighting (Ring lights, bar lights, backlights, strobed illumination) (IMAGAIAG)

Keywords

• Precision optical components
• EUV DUV optics
• Semiconductor lithography optics
• Custom optical manufacturing
• Nanometer-precision lenses

Headquarters

HQ city

Iida

HQ country

Japan

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Supply Chain, Marketing or Sales

Revenue model

1. Custom Optical Elements: Design, development, manufacturing and sales of high-precision optical elements. Products include ellipsoidal mirrors, aspherical lenses, cylindrical lenses, spherical lenses, axicons, prisms, freeform optics, and custom assemblies. All products are customized to customer requirements.
2. Optical Design Services: Optical design and development services using ZEMAX/CAD, supporting customers from R&D stage through to production.
3. Optical Sub-assembly Sales: Manufacturing and sales of optical sub-assemblies combining multiple optical elements.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

NATSUME designs, develops, manufactures, and sells high-precision optical elements including EUV mirrors, DUV optics, ellipsoidal mirrors, aspherical lenses, cylindrical lenses, spherical lenses, axicons, prisms, freeform optics, and optical sub-assemblies at nano-level accuracy. The company provides custom optical solutions to semiconductor manufacturers, aerospace agencies, and scientific research institutions, offering optical design services using ZEMAX/CAD, coating services, and cleanroom packaging alongside its manufactured products.

Product overview

Natsume Optical Corporation is a precision optics manufacturer offering a comprehensive portfolio of high-precision optical elements for semiconductor, aerospace, synchrotron, and advanced science applications. The core product line consists of EUV Mirrors and DUV Optics (encompassing Ellipsoidal Mirrors, Aspherical Lenses, Cylindrical Lenses, Spherical Lenses, Axicons, Freeform Optics, Prisms, Fly-eye Lenses, Ball Lenses, and Optical Sub-assemblies), all manufactured with nano-level precision at their Technology Center in Nagano, Japan. The company provides supporting services including custom optical design using ZEMAX®/CAD, DUV-to-IR and soft X-ray gold coatings, and cleanroom packaging with N2 purge. Established in 1947, Natsume has served the semiconductor industry since the 1980s and is ISO 9001:2015 and ISO 14001:2015 certified.

Differentiator

Problem solved

Functional benefit

Products and services

• EUV Mirror High-precision mirrors for extreme ultraviolet (13.5 nm) and soft X-ray applications with extremely low HSFR (RMS down to 0.1 nm and below), MSFR below 0.10 nm, and LSFR below 3 nm. Available in various shapes including off-axis ellipsoid, Wolter, and free-form optics using materials such as fused silica, Si, SiC, and CaF2. Used in semiconductor lithography and synchrotron applications.
• DUV Optics High-precision optics for deep ultraviolet (DUV) wavelengths (193 nm, 213 nm, 248 nm, 266 nm, 355 nm) used in semiconductor lithography and inspection equipment. CaF2 optics achieve PV λ/38 wavefront error, 0.473 nm RMS waviness, and 0.208 nm RMS micro roughness.
• Ellipsoidal Mirror High-precision ellipsoidal mirrors with HSFR, MSFR, and LSFR controlled surfaces providing better reflectance in EUV and X-ray applications. Synchrotron Radiation Facility quality with slope error less than 0.2 nm (RMS) and less than 1 urad (RMS).
• Aspherical Lens Precision aspherical lenses with proprietary smoothing technologies reducing surface waviness and roughness. Supports high efficiency in chip manufacturing and DUV range inspection. Surface form tolerance RMS λ/40, diameter range ø5.0 mm to 200.0 mm.
• Cylindrical Lens NATSUME signature optics featuring high precision surfaces including cross-axis cylindrical surfaces and composite monolithic cylinders with spherical rear surface. Flatness on cylindrical axis RMS λ/20, surface accuracy RMS λ/10 within 100 mm x 100 mm. Entire cylindrical surface assured by patented interferometer system. Originally developed for laser printers in the 1970s.
• Spherical Lens High-precision spherical lenses achieved through continuously refined grinding and polishing techniques. Surface accuracy λ/20 without MRF processing, less than 0.4 nm on CaF2 with low-pressure processing reducing stress birefringence.
• Axicon Precision axicon lenses produced since 1977 with sharp apexes and concave surfaces achieved through advanced polishing. Features clear aperture 90%, apex angle up to 179.9 degrees with ±10 arcsec accuracy, diameter up to ø200 mm. Over 15,000 axicons installed in manufacturing equipment worldwide.
• Freeform Optics Complex freeform optical surfaces including aspherical cylindrical lens, toric lens, off-axis aspherical lens, free-form lens, partially rotating ellipsoidal surface, parabolic surface, Zernike polynomial surface, and monolithic Wolter surface. Developed for synchrotron facilities in the 2010s.
• Prisms Wide range of precision prisms including right angle prism, rod prism, rhomboid prism, dichroic prism, roof prism, TIR prism, wedge prism, corner cube, penta prism, polygon prism, and optical contact prisms.
• Fly-eye Lens Fly-eye lenses for beam homogenization and illumination applications in semiconductor lithography systems. Originally developed for lithography systems in the 1980s.
• Ball Lens Precision glass balls for optical network and light coupling applications. Introduced for optical network applications in the 2000s.
• Optical Sub-assemblies Assembled optical units including doublet and triplet lens assemblies, hole drilling, and outer circumference special machining. Combines multiple optical elements into integrated units for customer applications.
• Optical Design Services Custom optical system design services using ZEMAX® and CAD software to support customers from R&D stage through production. Engages with customers from development phase to define specifications for previously non-existent optical solutions.
• Coating Services DUV to IR optics coating and soft X-ray mirror (Au) coating services for enhanced optical performance and application-specific reflectance optimization.

Quantifiable outcome

• EUV mirror HSFR: RMS down to 0.1nm and below
• +5 more outcomes

Named customers4 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Four partnerships are on record, tiered core and strategic.

• JAXA (Japan Aerospace Exploration Agency)coreStrategic or Co-development Partner · 1 March 2024NATSUME supplies high-quality optical elements (lenses) for the GALA (Ganymede Laser Altimeter) instrument on the JUICE spacecraft. The optics were manufactured using special optical materials selected for space environments and NATSUME's proprietary technology for processing nano-precision free-form surfaces.
• ZEISScoreStrategic or Co-development Partner · 1 May 2023NATSUME and ZEISS developed innovative optical technologies together. NATSUME provides stable quality and flexibility in supply to ZEISS, selected from among ZEISS' global network of suppliers. ZEISS, with over 175 years of optical technology history, recognized NATSUME with Supplier Award 2023.
• University of TokyostrategicStrategic or Co-development PartnerCollaboration with University of Tokyo to develop manufacturing process for soft X-ray mirrors that combines precision machining and precision replication technologies. Joint development of Monolithic Wolter mirrors for soft X-ray applications.
• ESA (European Space Agency)coreStrategic or Co-development PartnerNATSUME's optical elements are used in the ESA-led JUICE (Jupiter Icy Moons Explorer) mission. JUICE is one of the most significant international programs in solar system exploration history, with participation from European countries, Japan, the United States, and Israel.

Scale indicators5 records

Recent moves3 records

Expansion highlights5 records

Direct peers

• Edmund Optics: US-based manufacturer and global distributor of precision optical components including aspheric, cylindrical, spherical, and custom optics. Directly comparable as a custom-precision optics competitor serving semiconductor, laser, and research customers.
• AGC (Asahi Glass): Japanese materials company with a substantial electronics division producing EUV mask blanks and optical glass for semiconductor and photonics applications. Directly comparable in optical substrates and EUV-component supply.
• Jenoptik: German precision-optics and photonics company producing optical components and systems for semiconductor equipment, laser material processing, and life sciences. Directly comparable as a European precision-optics peer serving the same semiconductor and laser-processing verticals.
• Thorlabs: US-based vertically integrated photonics manufacturer offering a broad catalog of precision optical components, optomechanics, and laser systems. Comparable as a direct peer in custom and standard precision optics for research and industrial photonics.
• HOYA Corporation: Japanese specialty glass and optics manufacturer producing photomask substrates and optical components for semiconductor lithography and EUV applications. Directly comparable in precision optical materials and EUV-adjacent component manufacturing.

Broad incumbents

• Canon: Diversified Japanese optics and imaging corporation with a semiconductor lithography equipment business that consumes high-precision optical elements. Comparable as a large incumbent operating in NATSUME's core semiconductor and precision-optics adjacencies.
• ZEISS: Global optics and optoelectronics leader with deep semiconductor lithography and metrology exposure. Directly comparable as both a NATSUME customer (Supplier Award 2023) and a competitor in high-precision optics manufacturing for similar semiconductor and scientific end-markets.
• Schott AG: German specialty glass and optics manufacturer with deep exposure to semiconductor lithography optics and EUV-related materials. Comparable as a broad incumbent supplying optical materials and components into the same semiconductor and scientific end-markets.
• Coherent Corp (formerly II-VI): US-headquartered photonics and compound-semiconductor company producing optics, laser components, and materials for semiconductor capital equipment and industrial laser markets. Comparable as a broad incumbent in photonics components serving similar end-customers.
• Nikon: Japanese precision optics manufacturer with semiconductor lithography systems (Nikon Precision) alongside industrial metrology and imaging. Comparable as a broad incumbent competing in EUV/DUV-adjacent optical systems and as a potential customer for high-precision optical components.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Natsume