Tuesday 16th August 2022

Top Ten Trends in Light Technologies, 2019


2019 Top Ten Trends

Light technologies are at the heart of today’s world, enabling the most sophisticated processes and procedures. Novus Lighteditors have identified ten significant trends in the application of light technologies, each of which is the result of many small, incremental advances and all offer abundant opportunity.

Ten trends that top our list in 2019:

  • Brain imaging
  • Additive manufacturing
  • Quantum technologies
  • Augmented/virtual reality
  • Polarization cameras
  • Lidar sensing
  • Lighting control
  • Deep learning
  • Mini spectrometers
  • Smart factories

Brain imaging

The field of brain imaging is expanding as advancements are made in technologies such as holography, 3D imaging, photon counting, fiber optic sensing and implantable MRI imaging. The 3D imaging market alone is expected to grow nearly 25% over the next three years, with brain research being one of its many applications. Researchers at Tel Aviv University in Israel have developed a photon counting solution that improves the quality of rapid 2D and 3D imaging of neuronal activity in the living brain in an attempt to uncover the inner working of the interface between neurons and blood vessels.

brain imaging

Holography is another area of opportunity in brain research. University of California Berkeley neuroscientist are using holographic laser light to activate neurons in the brain, simulating the pattern and rhythm of actual brain response. Alan Mardinly, a postdoctoral fellow in the US Berkeley lab of Hillel Adesnik said, “This is one of the first steps in a long road to develop a technology that could be a virtual brain implant with additional senses or enhanced senses.”

At the University of Arizona (US) researchers have developed fiber optic sensors that could offer an alternative to magnetic resonance imaging (MRI) systems used to map brain activity. Because the system would be portable, low cost and able to operate at room temperature and in unshielded environments, it could be used right at the point of impact either in sports to diagnose concussions or in conflict zones where explosives cause brain injury.

In other work, researchers at MIT have developed a tiny sensor that can be implanted into the brain, interacting with an MIR scanner outside the body. The device doesn´t require power or a wired connection into the brain, and it can detect tiny electrical current in the brain and optical signals produce by luminescent proteins.

Additive manufacturing

An emerging technology is additive manufacturing or 3D printing, which is forecast to be growing at more than 26% a year through 2023 It´s being used in everything from metal parts manufacturing in the automotive industry to design and manufacturing of custom optics to the fabrication of artificial limbs, blood vessels and heart valves.

3D printing

In laser additive manufacturing, lasers play a significant role because they focus large amounts of energy on a wide range of material powders, fusing them into 3D parts. The lasers fuse the materials, layer by layer, until the part is finished. Laser Powder Bed Fusion (LPBF), also known as Selective Laser Melting (SLM), is a process in focus in the AutoAdd project the Fraunhofer Institute for Laser Technology ILT in Aachen, Germany. The AutoAdd project intends to make it easier for the automotive industry to use additive manufacturing by integrating the LPF process chain in the automotive mass production environment reduce unit costs. Read more in “Paving the Way for Additive Manufacturing for the Automotive Industry.”

On the medical front, additive manufacturing is being used for many types of implants from facial to orthopedic to dental and more. The market for 3D printed medical devices is projects to be nearly $10 billion by 2025. Researchers in the UK have used additive manufacturing to discover how our bones grow. Built up in a process that mimicked real bone growth, they not only learned how bones grow, but they´ve learned what creates t he bones resistance to shocks and bending, which may result in more natural implants that could replace the metal and plastic implants used today. The research may also help in understanding osteoporosis and bone deterioration.

Quantum technologies

Digital technology has changed computers, communications equipment, security, medicine and more. Now we move beyond digital and into quantum technologies. Quantum mechanics describes the smallest things in the universe sub-atomic particles such as protons, neutrons, electrons.  Much funding is going toward development of quantum technology and projects that will bring the technology to commercialization. In Europe, for example, the Quantum Flagship is a 1 billion Euro, 10-year initiative that will involve more than 5000 European researchers. UNIQORN is one of the many projects that falls under the Quantum Flagship, and it will focus on quantum communication systems. Its mission is to provide the enabling photonic technology to accommodate quantum communications by putting complex systems into millimeter-size chips. 

quantum technologies

And yet another European group is joining forces on developing artificial intelligence and quantum computing. Imec, CEA-Leta signed an agreement to focus on developing, testing and experimenting with neuromorphic and quantum computing, intending to deliver a digital hardware computing toolbox that can by used by European industry partners to innovate in various applications, from personalized healthcare and smart mobility to new manufacturing industry and smart energy sectors.

And while many research groups are forming, a group of Australian, Italian and Swiss scientists developed a photonic chip, demonstrating possibly for the first time that quantum information can be encoded, processed and transferred at a distance with topological circuits on the chip.

Augmented reality/virtual reality

As digital technologies become a part of our everyday lives, we will be increasingly coming into contact with virtual, augmented and even mixed reality. What are they and how do they differ? Virtual reality immerses the user in another world. Wearing a head up or head-mounted display, the user is placed in a virtual environment, such as in a video game or in a healthcare setting. Augmented reality (AR) overlays images on a view of the real world. Mixed reality, as the name implies, mixes the virtual with the real world, allowing the user to interact with software-generated images. More information is provided in Coatings for Virtual Reality, Augmented Reality & Mixed Reality.

virtual reality

VRHealth provides virtual reality solutions to hospitals, rehabilitation centers and doctor´s offices. VR applications are available for pain management, rehabilitation exercises, therapy for children with ADHD and more.

The VOSTARS (Video Optical See-Through Augmented Reality Surgical System) project is developing a medical visor for use by surgeons. By superimposing a patient´s x-ray in 3D unison with their body, surgeons don´t have to look away during an operation. The visor also presents a patient´s anesthetic data, heart rate, body temperature and other vitals. The project forecasts an improvement in accuracy as well as reduced time in the operating room.

Opportunities are boundless as AR/VR/MR applications grow. Head up displays are integral to the new applications, and as a result, head up display market is expected to exceed $7 Billion by 2024, growing at a CAGR of more than 19% in that period.

Polarization cameras

Today we are seeing a high degree of specialization on the camera front, according to Senior Editor, Dave Wilson. “Gone are the days when bigger CMOS imagers were all that mattered. Today it’s all about what the imager or camera can do as well, hence the emergence of highly specialized imagers that can be used in time of flight imaging cameras and polarized cameras.


Polarization is the process of transforming unpolarized light into polarized, meaning it takes a light wave that is vibrating in more than one plane and transforms it into light waves with vibrations occurring in a single plane. Polarized cameras acquire images the way that insects do. Insects and other creatures, like the mantis shrimp, has a visual system that is able to sense polarization information with high dynamic range photosensitive cells.

Polarized cameras are useful in industrial inspection where there may be low contrast or high reflection. Polarization cameras can filter the angles of polarization form the…


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