Welcome to the New Year, give a big gift, ultra-short throw anti-light projection screen, buy one get one free! ! !

People in the 1980s grew up watching a large-back CRT TV. At that time, more than 20 inches was considered a big screen. In the mid-1990s, color TV gradually replaced black and white TV into thousands of households, and moved from analog to digital. In 2001, when people predicted that plasma TVs would replace CRT color TVs, the first generation of LCD TVs went on the market. In 2008, LCD and plasma TVs basically completed the replacement of CRT TVs, and LCD TVs ushered in an explosion, and their sizes became larger and larger. Compared with the CRT TV, which can only reach 38 inches, the size of LCD TVs can already be more than 50 inches. In 2013, the sales of 4K TVs skyrocketed; in 2014, conceptual TVs such as curved and ULED appeared, and 55 inches became the mainstream size; in 2016, large-size and 4K HDR became the hot spot in the industry, and laser TVs over 80 inches began to dominate the ultra-large screen market . For more than 30 years, TVs have been developed from scratch, from black and white to color, from CRT to LCD, to plasma, OLED, and laser TVs. Technological innovations and changes have continuously changed the form of TVs and are also helping TVs to better meet visual needs. The oversized size. With the advancement of intelligent projector technology in the past two years, screenless TVs, private theaters, home theaters, and living room theaters have gradually entered the public's field of vision. Many consumers should have heard of the feature that laser TVs are more eye-friendly, but they have not really understood it.　 Actually, in September 2018, the Saixi Laboratory of the China Electronics Standardization Institute officially released the comparative evaluation results of laser TV and LCD TV jointly with the ophthalmologists of Peking Union Medical College Hospital. According to reports, the ophthalmologists from Saixi Laboratory and Xiehe Hospital selected 36 people and divided them into 6 groups. They watched laser TV and LCD TV under the same conditions. They conducted a two-day test and obtained 144 groups of test data. The data confirms that the laser TV does have strong eye protection characteristics, and even has a certain improvement effect in certain aspects. After watching the same size laser TV and LCD TV for a certain time (90 minutes) and a certain distance (3 meters) through the human eye, 144 sets of human vision, refractive power, tear film rupture, ciliary muscle flexibility, and human vision are obtained. Eye subjective test data and make analysis.　　 Experiments have proved that watching LCD TV for a long time will cause the eyes to be dry and the ciliary muscles will be in a state of contraction. If the eyes are in this state for a long time, it will cause vision loss, which is commonly known as myopia. Compared with watching LCD TV, laser TV greatly reduces the visual stimulation of human eyes. At the same time, the ciliary muscle tends to be more flexible, which greatly reduces visual fatigue, so that it is not only more comfortable to watch laser TV under the same conditions, but also Can protect the eyes to a certain extent.　　 Nowadays, most of the TV sets are LED backlight LCD TVs, which directly stimulate the human eye with RGB-LED backlight. The imaging principle of laser TV is that laser light is emitted from a laser light source, which forms a complete image after multiple reflections, and finally enters the human eye. The human eye always sees the reflected light. This imaging method is closer to the natural light spectrum and energy distribution, and is more suitable for comfortable viewing by the human eye.　　 When we watch TV, we sometimes feel that the picture is always flickering. This is because the TV’s image refresh rate is low. The current new generation of LCD TVs basically do not see flicker, but the impact on the human eye still exists. Laser TV will not see obvious flickering phenomenon, because the image processing inside the machine is completed before it appears in human eyes. From this point of view, the loss of the television to the human eye is greater. Corresponding to the Fresnel anti-light screen of laser TV, the excellent performance of the projection screen is mainly due to the fine lens structure, which includes 6 optical layers. A semicircular Fresnel lens in the center of the screen reflects the beam from the projector to help reach the audience effectively. Its efficient light transmission makes the screen have a darker black level, does not lose obvious brightness in a bright environment, and effectively produces higher image contrast. Bring you a contrasting and vivid picture and a more comfortable viewing experience. The black grid anti-light film is a front projection optical projection film for ultra-short throw projection applications. It includes a multilayer optical structure and a black film material. Using reflective imaging technology, it can effectively absorb ambient light and greatly improve the performance in bright environments. The contrast and color saturation of the display screen, combined with ultra-short-focus laser projection, create an excellent solution for giant screen home theaters, conference presentations, and e-learning. Because the light is reflected light, it makes the picture soft and smooth, long-term viewing, the eyes will not hurt the eyes and it can effectively protect the eyes.