High-performance LEDs typically have a lens positioned right on top of the emitting surface. With this lens it is possible to emit more light from the LED. Unfortunately, this lens also prohibits attaching an optical component directly to the LED. Typical LEDs have a very broad solid angle of emission whereas waveguides typically have only a very small acceptance angle for light to be coupled into it. Therefore the coupling efficiency between an LED and a waveguide decreases as the distance between the components increases.<br><br> <strong>Technology</strong><br> We offer improved coupling efficiency by using a sleeve between the LED and the waveguide. This sleeve has an inner reflective surface in the shape of a truncated cone, allowing more light to be coupled into the waveguide, thereby increasing the coupling efficiency. A further advantage is that the position of the lens right above the LED can be varied relative to the sleeve, so that the divergence and intensity at the distal end of the waveguide can be adjusted and optimized as desired. The lens and sleeve are separate components which can be positioned relative to each other during the fabrication process. <br><br>
email@example.com | TechnologieAllianz e.V.
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Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
Light detection and control lies at the heart of many modern device applications, such as smartphone cameras. Using graphene as a light-sensitive material for...
Water molecules exist in two different forms with almost identical physical properties. For the first time, researchers have succeeded in separating the two forms to show that they can exhibit different chemical reactivities. These results were reported by researchers from the University of Basel and their colleagues in Hamburg in the scientific journal Nature Communications.
From a chemical perspective, water is a molecule in which a single oxygen atom is linked to two hydrogen atoms. It is less well known that water exists in two...
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