Light Simulation – Realistic Analysis of Optical Systems

Realistic Analysis of Optical Systems and Lighting Conditions
Transparenter Lichtleiter mit leuchtendem Lichtstrahl auf einer elektronischen Platine – Lichtsimulation optischer Systeme

Light simulation has established itself as an essential tool in the fields of design and engineering. It enables the precise analysis, optimization, and visualization of complex lighting effects — from the light source through light guides to the receiver. Physics-based simulations reduce development cycles, minimize the need for physical prototypes, and sustainably improve the quality of lighting systems.

Why Light Simulation for the Analysis of Optical Systems?

Light simulation provides detailed insight into luminous conditions and enables the efficient optimization of design parameters. Compared to conventional experimental setups, it saves time, materials, and costs while opening up new opportunities for innovation, sustainability, and iterative prototyping.

Greater Efficacy, Higher Efficiency, and a Better User Experience for Your Customers

Superior luminous efficacy, higher energy efficiency, and a compelling user experience are critical to the success of modern optical systems. This is precisely where we come in: we handle the complex development work on your behalf and ensure your products deliver maximum added value to your customers.

Using state-of-the-art light simulation, we optimize your systems with precision and real-world applicability, reducing development effort and shortening time-to-market. This allows you to enhance product quality while benefiting from our expertise and focusing on your core business.

Our simulations realistically reproduce luminous flux distributions, reflections, refractions, and scattering across the full spectral range — including wavelengths beyond the visible spectrum.

Reduce development time and costs: virtual testing allows various designs and materials to be digitally evaluated and optimized before any physical prototype is built. This conserves resources and accelerates the entire development process.

Simulation-based analyses enable targeted reductions in energy consumption, material usage, and manufacturing effort. This not only contributes to sustainability goals but also lowers operating costs — a benefit you can pass directly on to your customers.

We optimize luminous uniformity, illuminance, color mixing, and glare characteristics so that your lighting solutions are both technically sound and visually compelling.

Optimized lighting systems improve visual perception, reduce glare, and increase safety in technical applications — from automotive lighting to controls and displays.

Photorealistic 3D renderings make simulation results clear and persuasive — both for internal development decisions and for presentations to your clients. Concepts can be aligned at an early stage and implemented with focus.

Software Tools

For light simulation, we use industry-leading software offering the highest levels of accuracy and flexibility:

  • Ansys Speos: Ideal for the realistic simulation of complex optical systems, including multiphysics coupling and GPU-accelerated real-time computation.
  • LightTools (Keysight): Specialized in illumination design and light guide optimization — featuring advanced ray tracing algorithms and automated optimization routines.


Light simulation is more than an analysis tool — it is a key technology in modern product development. By combining cutting-edge software, rigorous physical models, and years of experience, we enable our clients to design their optical systems efficiently, sustainably, and to the highest quality standards.

Delve deeper into light simulation

Moderner Computerarbeitsplatz mit beleuchtetem Monitor, Tastatur, Maus und Headset
Light Simulation Services
Gelbe Signalleuchte bei Dämmerung mit Bokeh-Lichtpunkten im Hintergrund – Beleuchtungssimulation im Straßenverkehr
Industries & Application Examples
Glasfaserbündel mit ausstrahlenden Lichtpunkten – Visualisierung von Lichtleitern in der optischen Simulation
Light Simulation Fundamentals
ITB Ingenieurgesellschaft für technische Berechnungen mbH – Firmenlogo als Neon-Darstellung
Competencies, Events, Talks & Networks

Want to learn more about Light Simulation?

Whether you are facing a specific challenge or are interested in learning more about the possible applications of light simulation in your company – we will get in touch with you quickly and easily.

Write to us via our contact form or book an appointment directly with our light simulation expert.

Svenja Potthast – Lichtsimulation-Expertin bei der ITB GmbH

Talk to our light simulation expert

Svenja Potthast, M. Eng. 
Team Lead Light Simulation

“For me, sustainability begins in development. With precise light simulations, we create the basis for energy-efficient, standard-compliant products – even in the digital design. My goal is to design this technology in such a way that small and medium-sized companies also benefit from it: affordable, practical, forward-looking.”

News

April 2025
ITB Pune is 1 year old!

April 2024
Lecture by Yannick Lattner (CFD engineer) at the ISimT-24: Symposium on Innovative Simulations in Turbomachinery

April 2024
Foundation of ITB Pune, Rushab Oswal as new Managing Director.

April 2024
Our company has been a member of the sponsoring association of the KIMW (Kunststoff Institut) since April 2024

April 2024
Reinhard Houben, Member of the German Bundestag, visits ITB in Dortmund

Oktober 2023
In October 2023, we received approval from the Federal Ministry for Economic Affairs and Climate Protection (BMWK) for the ZIM individual project “Development of a scalable service for the simulation of light guides with variant calculation and automated workflow”.