Neonsee Gmbh

What Neonsee Gmbh does

neonsee GmbH is a privately held German deep-technology company founded in 2009 as a spin-off from the International Solar Energy Research Center (ISC) Konstanz, headquartered at Turmstraße 5, 78467 Konstanz. The company designs, manufactures, and distributes the RFsun platform, a patented free-standing plasma lighting technology that uses radio frequency (RF) energy to generate light without traditional electrodes, addressing limitations of conventional high-intensity discharge (HID) lamps. RFsun light engines deliver radiant output ranging from several watts to kilowatts, spectral coverage from deep ultraviolet to far infrared, lamp lifetimes exceeding 15,000 hours, temporal stability comparable to LED and LASER sources, and exceptionally low beam divergence suited to projection, fiber coupling, and lithography applications.

neonsee serves enterprise customers across aerospace and defense, automotive lighting, semiconductor manufacturing, medical and life sciences, and scientific research, with named engagements involving NASA, ESA, JAXA, the German Aerospace Center (DLR), Mercedes Benz, Magneti Marelli, ZKW Lighting Systems, Corning, Emcore, Azur Space, and the Indian Institute of Science. In 2025 the company divested its solar simulation business unit to halm elektronik GmbH in order to focus exclusively on RFsun research, development, and productization following patent grant in the same year.

The business operates a consultative enterprise field-sales motion, offering co-engineering across every project phase from feasibility studies to complete light engine and illumination system delivery, supplemented by an exclusive development partnership with the Institute of Microwave and Plasma Technology (IMP) at Aachen University of Applied Sciences established in 2023. Revenue mechanics combine hardware sales of RFsun light engines with professional services for custom illumination systems under a quote-based engagement model; pricing is not publicly disclosed and the company reports no funding rounds or external institutional investors.

Name

Neonsee Gmbh

Legal name

neonsee GmbH

Website

https://neonsee.com

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

1–10 employees

Short description

neonsee GmbH is a German deep-tech company that designs and manufactures RFsun plasma light engines—mercury-free, RF-driven high-radiance sources for aerospace, automotive, semiconductor, medical, and scientific customers.

Ownership category

akta.pro rank

Product category

Industrial Plasma Lighting

NAICS

Commercial, Industrial, and Institutional Electric Lighting Fixture Manufacturing (335132), Electric Lighting Equipment Manufacturing (33513)

SIC

Electric Lighting & Wiring Equipment (3640)

akta.pro primary industry

Specialty & Task/Workstation Lighting (Inspection/task lights, cleanroom/food-grade, portable work lights) (IMAGAIAK)

Keywords

• Plasma lighting systems
• Industrial light engines
• Mercury-free UV lamps
• High-intensity discharge alternatives
• Solar simulation illumination

Headquarters

HQ city

Konstanz

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. RFsun Light Engine Sales: Sale of proprietary RFsun plasma light engines to industrial, scientific, and medical customers. Products range from several watts to kilowatts output for applications in aerospace, automotive, semiconductor, and medical industries.
2. Custom Illumination System Development: Co-engineering services across project phases from feasibility studies to complete light engine and illumination system development, tailored to specific customer requirements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Neonsee designs, manufactures, and distributes a new generation of plasma lamps under its proprietary RFsun brand, built on patented free-standing plasma technology. The RFsun light engines overcome limitations of traditional HID lamps and deliver exceptional performance across scientific, industrial, and medical applications, with radiant output ranging from several watts to kilowatts and lamp lifetimes exceeding 15,000 hours. The company also offers co-engineering services across every project phase, from feasibility studies through complete illumination system development tailored to customer requirements.

Product overview

Neonsee GmbH is a single-product company focused exclusively on its proprietary RFsun free-standing plasma lighting technology. The RFsun product line encompasses light engines that overcome limitations of traditional HID lamps, delivering high irradiance illumination for scientific, industrial, and medical applications. The company previously operated a solar simulation business unit, which was sold to halm elektronik GmbH in 2025, allowing full organizational focus on RFsun research, development, and productization.

Differentiator

Problem solved

Functional benefit

Brands

• RFsun: Proprietary free-standing plasma lighting technology platform featuring high radiant output (watts to kilowatts), spectral coverage from UV to IR, exceptional beam collimation, and ultra-long lamp lifetime exceeding 15,000 hours.

Products and services

• RFsun Free-Standing Plasma Light Engines RFsun light engines are Neonsee's proprietary free-standing plasma lighting systems, generating light via RF energy rather than traditional electrodes. They deliver radiant output from several watts to kilowatts, temporal stability comparable to LED and LASER sources, spectral coverage from deep UV to far IR with application-specific shaping (including mercury-free cold UV), exceptionally low beam divergence suitable for lithography and fiber coupling, and lamp lifetimes exceeding 15,000 hours. They are sold to enterprise customers in aerospace, automotive, semiconductor, medical, and scientific research applications.
• Co-engineering and Custom Illumination System Development Consultative engineering services accompanying the RFsun platform, covering every project phase from feasibility studies through development of complete light engines and full illumination systems tailored to customer requirements. Offered to enterprise customers in aerospace, automotive, semiconductor, medical, and scientific research markets and introduced by a complimentary requirements analysis as a low-friction entry point.

Quantifiable outcome

• Lamp lifetime exceeding 15,000 hours for continuous duty operation
• +3 more outcomes

Named customers11 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Institute of Microwave and Plasma Technology (IMP) at Aachen University of Applied SciencescoreStrategic or Co-development Partner · 1 January 2023Exclusive development partner for neonsee RFsun lighting technology since 2023. Prof. Holger Heuermann heads the institute and established core technologies for GHz plasma generation and mixed-frequency measurement techniques. IMP provides access to RF components, UWB transceiver circuits, RF plasmas, and high-precision scattering parameter measurement expertise. The institute has authored over 110 publications and 50 patents.
• SpaceTech Immenstaad (STI)coreStrategic or Co-development Partner · 1 January 2018Integration in STI company network following shareholder restructuring in 2018. STI is a space technology company where key neonsee personnel previously worked on satellite solar arrays and space projects.
• CarboSpaceTech (CST)minorStrategic or Co-development Partner · 1 January 2018Integration in CST company network following shareholder restructuring in 2018 as part of broader space technology ecosystem consolidation.

Scale indicators4 records

Recent moves8 records

Expansion highlights4 records

Broad incumbents

• Newport / MKS Instruments: Major scientific light source and photonics manufacturer serving research, semiconductor, and aerospace test customers. Overlaps with neonsee on arc-lamp and specialty plasma/IR/UV light engines for solar simulation and spectroscopy.
• Hamamatsu Photonics: Large Japanese specialty light source manufacturer covering UV, IR, and broad-spectrum lamps and LEDs for scientific, medical, and industrial applications. Comparable as a high-performance specialty lighting incumbent with similar aerospace/semiconductor use cases.
• Ushio Inc. Japanese specialty lighting manufacturer with deep exposure to UV, EUV, and scientific light sources including lithography lamps. Direct overlap with neonsee's lithography, semiconductor, and UV-sterilization use cases.
• Thorlabs: Broad scientific photonics components and light source supplier serving research, semiconductor, and biomedical customers. Comparable in delivering custom illumination solutions for fiber coupling, microscopy, and test/measurement applications.
• Excelitas Technologies: Specialty photonics and lighting manufacturer serving scientific, medical, industrial, aerospace, and semiconductor customers with UV, IR, and broadband light sources. Closest broad incumbent in specialty illumination with overlapping customer base in aerospace and semiconductor metrology.

Direct peers

• Lumencor: US manufacturer of solid-state (LED) light engines for life sciences, medical, and analytical instrumentation. Comparable niche focus on custom engineered illumination subsystems serving scientific and medical OEM customers.
• halm elektronik GmbH: German electronics/solar simulation company that acquired neonsee's solar simulation business unit in 2025. Direct transactional relationship and now the closest competitor in the solar simulation space neonsee previously served.
• Sciencetech Inc. Canadian manufacturer of solar simulators, specialty light sources, and illumination systems for research and industrial testing. Direct peer in solar simulation and custom scientific illumination with overlapping aerospace/semiconductor/research customer base.

Others

• Ocean Insight (Ocean Optics): Spectral sensing and light source provider for research, biomedical, and industrial applications. Adjacent in the photonics/spectroscopy ecosystem where neonsee's spectral output capabilities find use, though not a direct competitor in plasma engines.

Emerging players

• Sutter Instrument: Specialty scientific instrument maker with overlap in custom light sources and optical systems for research applications. Smaller, niche player in the same specialty illumination ecosystem as neonsee.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/neonsee-gmbh

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Neonsee Gmbh