June 6th is the 23rd National Day of the Eye of Love. This year's theme is 'Science and Control Myopia, Caring for Children's Eye Health'. According to "2017 Beijing Elementary and Middle School Students Nearsightedness Related Factors Survey Report" for students using multimedia equipment According to the time survey, nearly 90% of the students have spent more than 20 minutes in class using multimedia devices. Students watch the multimedia display screen for a long period of time. In the past, they may have buried their health risks.
Why do computers, mobile phones, and multimedia electronic screens look uncomfortable after too long? Because most display backlights contain harmful blue light components in the emitted light, long-term injection can cause harm to human eyes. What kind of harm is Blu-ray?
Harmful blue light can cause eye damage (images from the internet)
We know that natural light is divided into visible light and invisible light. Ultraviolet light is a well-known invisible light with a wavelength range of 380 to 780 nm. The blue light wavelength is in the range of 420 to 500 nm, which is close to the wavelength of ultraviolet light, ie, high-energy visible light. Imagine what will happen to direct exposure of the human eye to ultraviolet rays that cause harm to the skin.! Harmful blue light is directed in large numbers. Long-term penetration of crystals directly onto the retina of the fundus will cause vision loss; it will also cause eye protection. The macular degeneration has led to macular degeneration and cataracts, increasing the risk of various eye diseases. It can be expected that the eyes of children and adolescents are still immature, and harmful blue light is particularly harmful to them.
The wavelength of blue light is 420~500nm near ultraviolet wavelength
With the popularity of multimedia teaching and digital facilities and equipment, how to reduce the potential harm of harmful blue light to students under the effect of ensuring daily classroom teaching has become a new appeal for teaching display products. Based on students' eye care and practical use requirements, international Show giant NEC, with its many years of leadership in the field of electronic circuits, optics, etc., launched a new series of eye-care education projectors, care for student groups with eye health.
NEC's New HLD Eye Care Projector
It is also based on the long-term concern for children and adolescents in China. NEC CU4200WD adopts second-generation HLD solid-state light source technology to reduce harmful blue light from the light source. HLD light source technology can effectively control the total amount of blue light and change the intensity of blue light in the light source. Peak spectral distribution. By comparing the blue light peaks of other solid-state light sources with HLD light sources, it was found that the blue light component of the HLD light source is significantly lower than other solid-state light sources, thus contributing to adolescent eye health.
HLD solid-state light source significantly lower blue light
NEC always adheres to the concept of excellence and innovation on the basis of rigor. It is committed to providing education users with high technology and convenience, while paying more attention to the healthy development of children and adolescents. NEC focuses on ergonomic design and cares for students' eye health. In the future, we believe CU4200WD will protect Eye education projector series, with educational projector Blu-ray less powerful advantages, will be more favored by users in the same category products.
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