光电技术应用
光電技術應用
광전기술응용
ELECTRO-OPTIC WARFARE & RADAR PASSIVE COUNTERMEASURES
2015年
4期
16-19
,共4页
徐淳%杨磊%曲士巍%王艺燃%朱伟%钱幸璐%何希文%万林伟%邹军
徐淳%楊磊%麯士巍%王藝燃%硃偉%錢倖璐%何希文%萬林偉%鄒軍
서순%양뢰%곡사외%왕예연%주위%전행로%하희문%만림위%추군
COB%光学性能%LED%电流%时间%光谱能量分析
COB%光學性能%LED%電流%時間%光譜能量分析
COB%광학성능%LED%전류%시간%광보능량분석
chip on board (COB)%optical performance%light-emitting diode (LED)%electric current%time%spec-tral energy analysis
针对LED高光效、低功耗的要求，在分析LED光学性能的基础上，采用了COB（chip on board）即板上芯片封装技术。研究了不同电流下和点亮不同时间后，分析其LED光通量、光效和色温。研究分析影响LED光学性能的因素并进行测试。结果表明，用两种色温接近3000 K的样品，电流由500 mA增大到900 mA，色温升高了1.685%、2.626%，光通量也随着电流的变大而升高68.532%、84.625%，但相反光效却降低了13.535%、9.971%；而在电流保持不变的情况下，点亮的时间由0~1 min、0~5 min、0~10 min，其色温分别上升了0.537%、1.209%、2.384%；0.369%、1.104%、2.943%，同时，光通量分别降低1.474%、4.855%、7.493%；2.073%、3.859%、7.793%，光效也分别降低2.527%、4.617%、6.671%；2.171%、4.903%、7.579%。实验发现，电流与点亮时间直接影响LED光学性能。
針對LED高光效、低功耗的要求，在分析LED光學性能的基礎上，採用瞭COB（chip on board）即闆上芯片封裝技術。研究瞭不同電流下和點亮不同時間後，分析其LED光通量、光效和色溫。研究分析影響LED光學性能的因素併進行測試。結果錶明，用兩種色溫接近3000 K的樣品，電流由500 mA增大到900 mA，色溫升高瞭1.685%、2.626%，光通量也隨著電流的變大而升高68.532%、84.625%，但相反光效卻降低瞭13.535%、9.971%；而在電流保持不變的情況下，點亮的時間由0~1 min、0~5 min、0~10 min，其色溫分彆上升瞭0.537%、1.209%、2.384%；0.369%、1.104%、2.943%，同時，光通量分彆降低1.474%、4.855%、7.493%；2.073%、3.859%、7.793%，光效也分彆降低2.527%、4.617%、6.671%；2.171%、4.903%、7.579%。實驗髮現，電流與點亮時間直接影響LED光學性能。
침대LED고광효、저공모적요구，재분석LED광학성능적기출상，채용료COB（chip on board）즉판상심편봉장기술。연구료불동전류하화점량불동시간후，분석기LED광통량、광효화색온。연구분석영향LED광학성능적인소병진행측시。결과표명，용량충색온접근3000 K적양품，전류유500 mA증대도900 mA，색온승고료1.685%、2.626%，광통량야수착전류적변대이승고68.532%、84.625%，단상반광효각강저료13.535%、9.971%；이재전류보지불변적정황하，점량적시간유0~1 min、0~5 min、0~10 min，기색온분별상승료0.537%、1.209%、2.384%；0.369%、1.104%、2.943%，동시，광통량분별강저1.474%、4.855%、7.493%；2.073%、3.859%、7.793%，광효야분별강저2.527%、4.617%、6.671%；2.171%、4.903%、7.579%。실험발현，전류여점량시간직접영향LED광학성능。
According to the requirements of high light efficiency and low power consumption of light-emitting diode (LED), based on analyzing LED optical performances, chip on board (COB) technology is adopted. The lumi?nous flux, luminous efficiency and color temperature of LED are analyzed under different electric current and light?ing time. The elements influencing LED optical performances are researched, analyzed and tested. Results show that using two kinds of samples with color temperature closed to 3000 K, electric current increases from 500 mA to 900 mA, color temperature increases 1.685% and 2.626%, luminous flux also increases 68.532% and 84.625%with the increasing of the electric current, but optical efficiency decreases 13.535%and 9.971%. Under the same electric current condition, lighting times are 0~1 min, 0~5 min and 0~10 min, color temperature increases 0.537%, 1.209%, 2.384%, 0.369%, 1.104%and 2.943%respectively. Luminous flux decreases 1.474%, 4.855%, 7.493%, 2.073%, 3.859%and 7.793%respectively. Optical efficiency also decreases 2.527%, 4.617%, 6.671%, 2.171%, 4.903%and 7.579%. The experiments show that LED optical performances are directly influenced by electric cur?rent and lighting time.
