As a great potential developing light source, people focus on LED’s long life, rugged construction, low power consumption and flexible dimensions, etc. by the people more and more attention in recent years, LED especially monochrome LED is widely used in large-screen, lights and landscape lighting. As LED technology continues to evolve, the white LED luminous efficiency, color rendering, color temperature and a single LED power and luminous flux LED module parameters such indicators continue to achieve new breakthroughs, people are looking forward to LED for lighting.
However, the white LED used in ordinary indoor lighting is also facing a number of challenges, such as single LED luminous flux is also difficult to meet the demand for general lighting, the unit cost is too high, the low light efficiency than energy-saving lamps, great color, stability is inadequate. Although research is gratifying, but to truly meet the lighting requirements to produce market-oriented products will take some time, which is LED R & D personnel, manufacturers and users inescapable fact. In this paper, lighting ergonomics, analyzes the current development status, and white LED light environment and health indicators required for the normal difference between the promotion of LED interior lighting application process made some suggestions.
According to reports, the current white LED luminous efficiency of laboratory data has more than 100lm / W, and into the commercial area of ??high-power white LED has reached 40lm / W. With breakthroughs in key technologies, the future high-power LED light effect still has much room for growth, the highest may reach 150 ~ 200lm / W.
As previously described, considering illumination ergonomics people consider the lighting environment. Indoor environment for people living and working environment stays most of the time, so people on the indoor lighting needs of the environment is getting high. Can meet these requirements or not, are the key point of replacing traditional interior lighting by LED light source.
To meet certain level of illumination, the LED requires a sufficient flux. Reading room with a small example, assume reading area 6m × 8m, then about 20000 ~ 30000lm flux in order to meet people’s normal reading. Without considering other factors, the application of high-power currently on the market 200lm particles 100 to 150 particles also need to be able to reach such an LED illumination requirements.
As the current market products better light efficiency at 30 ~ 40lm / W or so, whether energy or cost, LED and energy-saving lamps can not compete or fluorescent. In addition, LED lighting optical design technology immaturity make the current LED lamps light distribution is not stable enough to reach a certain uniformity of illumination also requires a very high cost. However, a small area of ??focus for the lighting of the LED with a small power consumption to meet the visual needs, uniformity also relatively easy to meet. In color, the current white LED can basically meet the needs of general indoor activities. So choose white lighting to fully consider the actual situation of their own, do not blindly choose LED lamps, damaging their bodies would be a big problem.