The phosphor + blue light mixed light source projector (also known as the blue laser pointer projector) uses a blue light source, through a high-speed rotating fluorescent pink wheel containing various colors such as red and green, using the rotating fluorescent pink wheel technology The three primary colors of red, green and blue are produced, and light output of different colors is generated at different times, and finally white light output is realized.
This technology overcomes the most fundamental technical problems of laser display in terms of efficiency and reliability, and achieves a more pure color, closer to the international standard color gamut value, and has a long life, generally more than 20,000 hours, and safety Stronger, no risk of explosion, and even more environmentally friendly. However, due to the nature of the phosphor + blue light source, it can only be achieved with a single chip DLP, which is also insufficient for the business, engineering, and education markets.
Fluorescent laser display technology, using the basic technical route similar to mainstream LED lighting and display blue light plus fluorescent materials, creatively invented the remote rotating fluorescent device, ingeniously solved the problem of thermal quenching of fluorescence conversion. High conversion efficiency is still maintained. At the same time, the use of GaN blue laser and YAG and nitride fluorescent materials effectively continues the advantages of high reliability and long life of LED. The laser light source also has the advantages of the traditional LED and solves the shortcomings of the two. It has become a new type of light source and a major breakthrough in the history of green laser pointer light source.
The three-primary-color pure laser technology is regarded as the most pure laser light source in the industry. It has the advantages of rich colors and high color saturation. It can be the richest, most gorgeous and most realistic colors in nature, and has become a major technical development direction in the field of laser display technology. At present, the projection equipment using three-primary-color pure laser light source has penetrated into the fields of simulation, exhibition, conference center, outdoor curtain wall, digital cinema, home theater, etc. It has great development space and broad application prospects.
When pentacene loses its electrons, its molecules will be pulled violently towards the surface and swing up and down. The researchers observed this vibration for the first time by using terahertz pulses with different frequencies and higher frequencies. One of the leaders of the research team, a physicist said, “There is no other way to observe the oscillation of a single molecule.”
Although this red laser pointer experiment is essentially a proof of concept, he still believes that his team can reduce the time resolution of the terahertz scanning tunneling microscope to 10 fs, showing a faster process: after the molecule absorbs the photon, the electron slides through the molecule Process, or the phenomenon of tautomerism in which hydrogen ions jump back and forth at different positions, which affects the reaction between many biomolecules. This may bring about changes that allow you to observe atom-specific reactions on a flat surface. Physicists at the IBM Research Institute in Zurich, Switzerland, hope to apply atomic force microscopes as well.