【摘 要】
：
This paper studies a new type of solar spectral fitting technique based on LED.Firstly,Using the light collecting equipment collected several typical periods of the solar spectrum of Beijing.And then,
【机 构】
：
Institute of Semiconductors,Chinese Academy of Sciences No.A35,Qing Hua East Road,Beijing,China
论文部分内容阅读
This paper studies a new type of solar spectral fitting technique based on LED.Firstly,Using the light collecting equipment collected several typical periods of the solar spectrum of Beijing.And then,After a preliminary analysis,five specific bands LEDs are used to fit the target solar spectrum.Among them,the use of two pieces of normal white light LEDs,a single LED with 480nm wavelength,a single LED with 500nm wavelength,and a single LED coated red fluorescent powder emitting 650nm light.To sum up,through the five different bands LEDs fitting the solar spectrum of Beijing,light is more soft,eye viewing is more comfortable; Compared with the acquisition of the solar spectrum,fitting degree reached 98%,total power 3.5-3.8w,light efficiency is about 100lm / w,color rendering index(CRI) is about 85.
其他文献
In this paper,a high-performance compact rubidium frequency standard (CRFS) has been successfully developed,of which the frequency stability (Allan variance) reached 3E-12/τ0.5(τ=1s~1000s) and frequen
Based on the correlation coefficient between the time series of the GPS network,extracting the common mode error(CME) using principal component analysis(PCA) in Crustal Movement Observation Network of
Three different LED intelligent lighting architectures are analyzed and four interoperability support elements are extracted.Three levels of lighting interoperation modes that can be utilized in LED i
Sidereal filtering is effectiveto mitigatemultipath errors from observations or coordinates by taking advantage of the sidereal repeatability of GPS multipath signals.However,the characteristics of BD
Light emmiting diode (LED) lighting is becoming more and more popular in both commercial and residential lighting system for its energy-efficiency and environmental-friendly merits.For high end lighti
LED light source module is developed according to the design of light distribution of RRGB chip based on the demand of plants for light,temperature and humidity.Several light source modules constitute
An asymmetric PWM controlled LLCC LED driver with capacitor connected in series with secondary winding of the transformer is proposed.Due to the presence of the secondary side resonant capacitor,the D
A psychophysical experiment was conducted to study lighting uniformity across a desk top and the wall as well.The data were used to evaluate three uniformity metrics.Four attributes were scaled includ
The main goal of the present study was to compare the impact of dynamic and static light on work performance and means of different measures of alertness.Ten participants experienced four sessions.Eac
This study aims to investigate the effect of combination of color accent light and white ambient light on the peoples preference for living room considering the activities.60 observers participated th