ALPS'17 Shun Fujii

    I usually have the chance to visit the poster presentation rooms, but since I was also a poster presenter, I was not able to do so.

    Among them, I would like to briefly introduce the invited lecture on Mitsubishi Electric's laser display. The current TV image standard is Hi-vision, but a new broadcasting standard, Ultra High-vision, is scheduled to start in 2018. Ultra High-vision is expected to be the next generation of TV broadcasting that can express more realistic colors while eliminating problems of motion and blurring with an overwhelmingly high pixel count of 4K and 8K. Mitsubishi Electric is trying to expand the color space by using RGB laser diodes instead of conventional TVs with white backlights and color filters. When white light sources are used, colors are inevitably determined by the characteristics of the light source and filters. This limits the color space, and the use of LDs with good spectral characteristics will enable more directional and wider bandwidth color expression. Ideally, LDs should cover 99.91 TP2T of the colors existing in the natural world, but the current technology covers up to 981 TP2T, he said.

    At the exhibition (OPIE), there were many companies exhibiting, including optical equipment manufacturers. In particular, I visited the booths of well-known optical and measurement companies such as Thorlab and High Finesse, and had many conversations with the people in charge. Although I have attended such exhibitions at international conferences, I did not have much opportunity to talk with them because I was not confident in my English skills. What caught my interest was the OCT demo machine (attached photo) displayed at the Thorlab. It was very interesting to see the actual machine because I had a chance to study OCT recently. It is measuring the fault lines of a fruit jelly, and it can be seen that the packaging and tangerines are reflected in the image.

    In addition, at the Optosirius booth, we were introduced to the latest version of the spectrometer we are using, and were given very useful information directly related to our research activities, such as the ability to measure power with a calibration light source.

    We learned that one of the major attractions of exhibitions is that we can learn about performance and usage that we would not normally notice just by looking at catalogs by ourselves, by talking directly with the exhibitors.