Laserkommunikation im Weltraum

Space. Precision Optics for Use in Space.

Berliner Glas develops and manufactures optical high-end components, assemblies and systems that satisfy the strict requirements for use in space. This includes precision optics used to monitor the environment from space as well as optic modules used for laser communication - for example for the Laser Communication Terminal (LCT) of the Data Highway in Space.

In order to guarantee the necessary, highly specific properties, all optical systems are tested and qualified for use in space by our specialists.

Optical Systems for Laser Comm­unicat­ion in Space

At our location in Berlin, we develop and produce optic modules for Laser Communication Terminals (LCT) that are decisive in driving the "optical fiber revolution" in space.

The LCT transmits large volumes of data (1.8 Gbit/s) between satellites in low-earth orbit (LEO) and in geostationary orbit (GEO). This means that satellite data can be provided very quickly for evaluation on the Earth (details here in Data Highway in Space). This technology also is foremost in the area of energy efficiency and security (insensitive to noise, tap-proof).

Our contribution

  • Customer-specific design and development of high-performance systems
  • Wide-spread use of industrial development tools for competitive product design
  • Efficient technologies and state-of-the-art processes for the highest system performance
  • Experience dealing with the demanding standards and provisions with regards to the European Cooperation for Space Standardization (ECSS) for minimal risk in development and assembly
  • Production of precision mirrors for extraordinary specific applications (High-Performance Mirror for Space Applications)
  • Complete product implementation, from concept to volume production including qualification and module verification
Messtechnikaufbau für die Weltraumtechnik im Reinraum

Test set up and installation location in clean-room environment (ISO Class 5)

Messaufbau für Raumfahrtprodukte

Measurement set up for space products

High-Perfor­mance Optics to Monitor the Earth and the Environ­ment

The primary task of modern satellites is to provide civilian Earth monitoring to research environmental impacts on the Earth. Our contribution to this area consists of ultra-precise prisms made from various materials (with precision greater than λ/5) for environmental satellites in EnMAP (Environmental Mapping and Analysis Program).

EnMAP is a satellite program that records hyperspectral image data of the Earth’s surface. The spectrometer covers the wavelength range from 420 nm to 2450 nm with ca. 230 spectral channels for the visible and infrared spectral range. The project is supported by German Aerospace Center (DLR) with funds from the Federal Ministry for Economic Affairs and Energy (BMWi).

Our contribution

  • Product-specific technologies and production processes for the most demanding optic components
  • Design and implementation of complex devices to produce and assemble ambitious products
  • Superfinishing and highly precise measurement technology for small and light-weight components all the way to large optics (2 m diameter/length) with unique surface precision
  • Application of and compliance with industrial standards in quality management and project implementation as well as production-oriented tools for high efficiency
  • Competitive use of modern control processes in order to predictably provide complex products on time
Umweltsatellit EnMAP: Animation

Environmental satellite EnMAP: Animation, source: OHB System AG

High-Perfor­mance Mirrors for Use in Space

With our know-how of anodic bonding of SiSiC and glass, we possess special manufacturing expertise when manufacturing space mirrors of many different dimensions and contours.

With these ultra-precise mirrors (High-Performance Mirror for Space Applications) that must master both extremely harsh environmental effects as well as extraordinary efficiency during their many years in space, we provide value when realizing complex optical systems such as laser communication systems in space.

In order to meet the highest demands for the greatest possible durability of our products, we are constantly expanding our technological know-how in the area of joining (e.g. anodic bonding of SiSiC and glass) or coating (e.g. PVD of glass on SiC).

Parameters that can be achieved using our technologies

  • Low surface dimensions of < 30 kg/m² via targeted (also closed) light-weight optics for the optimal relationship between dimensions to size
  • High thermal and mechanical stiffness via the use of suitable materials like SiC, SiSiC or comparable substances
  • Low roughness (< 1 nm RMS) via application of a conventionally polished glass layer
  • Highest surface flatness via fine correction processes
  • Low influence of scattered light due to high optical surface quality
Leichtgewichteter Weltraumspiegel

Light weight space mirror


Closed light-weight structures for mirrors used in space

Earth­bound Astro­nomical Applications

Viewing the stars has not only been of great importance since the astronomical pioneers Galileo Galilei or Johannes Kepler. With earthbound optical systems and high-end components that meet the requirements for use in astronomical applications, we support many space monitoring projects.

What we offer in the area of astronomical applications

  • OEM development of complex optical systems, above all high-end telescopes or adaptive optics
  • The development and implementation of specifically adapted optic technologies for manufacturing and qualification
  • The efficient and risk-minimized execution of complex projects using our proven manufacturing technologies for products used in astronomical applications
  • The use of state-of-the-art processes and methods for the best optical performance, maximum image quality and highest cleanliness quality (min. ISO 5)
  • Certified processes and experience dealing with common industrial standards and provisions for product lines used in astronomical applications
Teleskop für Astronomie

Large high-performance mirrors for astronomical applications

Optical Measure­ment Equip­ment for Space Appli­cations (OGSE)

For a successful performance in space, it is absolutely necessary to use the correct and qualified equipment when adjusting, measuring and inspecting on the ground. We are your excellent partner in this regard and have already provided the decisive OGSE (optical ground support equipment) for many key applications and important space programs.

Important technical parameters that we can offer

  • The creation of very large optical components (up to 2 m in diameter or edge length)
  • Process various glass and glass ceramic materials
  • Fine processing of surfaces to small nanometer PV, depending on specifications
  • The use of high-performance testing systems for absolute qualification
  • Regular reconciliation with the Physikalisch Technischen Bundesanstalt (PTB) and internal testing standards
  • Sub-second correction for beam guidance tests and calibration
  • The use of our industrial processing and testing abilities even for special products in small quantities
  • Complete and standard-compliant documentation of customer-specific requirements
Calibration of a zerodur mirror

Absolute calibration of a ZERODUR reference mirror


Our components have been used successfully in the following space programs:




EDRS-A 2016




Contact our specialists

Please choose your contact partner:

Kontakt Weltraumtechnik
Christian Kramer
Phone +49 30 60 905-4967
Kontakt zu Berliner Glas
Callback request

Let us call you back!


Data sheet

Space Optics

Right of retraction

You can revoke the use of your data anytime via email to, via fax, or via post. If you have any other questions, you can reach our data protection staff at

* mandatory field

Berliner Glas GmbH
Waldkraiburger Straße 5
12347 Berlin, Germany

Phone +49 30 60 905-0
info [at]


Contact details