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As one of the main symbols of scientific and technological development in the 20th century and one of the pillars of modern information society optoelectronic technology, the development of laser technology and laser industry is highly valued by the advanced countries of the world.With the laser application of aeronautics and astronautics, and the ubiquitous laser processing products, we are enjoying the changes of the laser science and technology in our lives.

However, the laser equipment that is closest to our lives is not a laser pointer.Toy laser pointer in the 1990 s to the present streamline design, positive USES advanced three color acrylic panel, ultra-thin glass Mosaic again, whole is made of the piano surface of the lacquer that bake comfortable business teaching the use of the laser pointer.There are few laser products that the average person can touch.

Recently, laser pen has caused quite a stir.The guangzhou division has also been warned by the Asian football confederation (afc) after receiving a laser beam from the Asian football confederation in tianjin.In their home game against vurini, individual field fans used laser Pointers to influence the quality of the game.In fact, in the last round of the Asian champions league game against the Japanese cypress, the visiting team complained about a player who had been shot at by a laser pointer during the game.There are fans that his fans know how to use the laser pen only after the game, after aware once in my mind is very angry, he hopes to all the fans in guangzhou, to maintain the guangzhou city image is the overall interests, consciously abide by relevant 'order, let the image of guangzhou fans continue to carry on the international stage.

With the continuous refresh of the research achievements of laser technology, it is expected that more and more laser products can enter our life and bring convenience and benefit to us.It is also hoped that similar laser exposure to players can be avoided as far as possible.

Dental caries are known to be used in special laser strokes.A new method of detection at wuhan university's oral hospital yesterday can quickly and accurately detect caries.

Dental hospital oral cavity prevention of min-quan du, ever the doctor diagnosed cavities, rely mainly on vision and touch, with the help of a simple instrument and the naked eye, observing the teeth have caries white spot, teeth shape whether to change or mineralization.There may be errors and even missed diagnosis.

Recently, the hospital introduced the international advanced laser fluorescence detector.This ordinary ballpoint pen size instrument can be extended into the mouth to quickly identify the caries.

According to the introduction, the principle of blue laser pen or green diagnosis is that the visible laser with blue and green range is the source of irradiation.The surface tissue absorbs the laser and produces a different degree of fluorescence;The fluorescence reaction of the dissection was higher than that of normal hard tissue.Probe to convert different fluorescence reaction to signal, become, according to data beyond the normal means are inspected the tooth is mine, is in danger of decay or have been developed for dental caries, require treatment.

Experts say the technique is simple, safe and painless, and the accuracy rate is higher than the X-ray examination, which is suitable for the early diagnosis of pit and adjacent caries, which can effectively reduce the occurrence of caries.

The prevalence of caries in China remains high and is now the fourth most common disease after cancer, hypertension and heart disease, according to a survey by the Chinese dental association.