Nihon Vital's "Kaisei".

Taking a hint from the fact that insects find flowers by the wavelength and light intensity of sunlight, the company has developed an "insect eye sensor" that tracks sunlight. It efficiently collects sunlight. The six optical fibers can be extended up to one kilometer and can illuminate 500 square meters. It is about 2 meters long, 2 meters wide and 2.5 meters high. The price starts at 5 million yen (excluding consumption tax). It has been used in buildings and train stations in Kumamoto Prefecture, and its sales have been about 100 million yen. It can also be used to cut infrared rays and ultraviolet rays. The company is currently producing them overseas, but will switch to domestic production within this year. The price will start at 250,000 yen (same as above). "The market for solar concentrators is worth about 20 billion yen. President Yokozawa hopes to capture a 20% share of this market. (Photo taken on December 19, 2019, location unknown, credit: Nikkan Kogyo Shimbun / Kyodo News Images)