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<TABLE cellSpacing=1 cellPadding=0 width="100%" bgColor=#cccccc> <TBODY> <TR vAlign=center bgColor=#ffffff> <TD width="14%" height=30><STRONG>名称 </STRONG></TD> <TD width="4%"><STRONG>符号</STRONG></TD> <TD width="8%"><STRONG>单位</STRONG></TD> <TD width="74%"><STRONG>说明</STRONG></TD></TR> <TR bgColor=#ffffff> <TD height=30>光束(光通量ï¼?Luminous Flus</TD> <TD>ф</TD> <TD>流明Lm<BR>(Lumen) </TD> <TD>光源每秒钟所发出的总和,简单的说就是发光量</TD></TR> <TR bgColor=#ffffff> <TD height=30>光强 Luminous intensity </TD> <TD>â”?</TD> <TD>烛光cd (Candela) </TD> <TD>光的强度,在某一特定立体角内的光通量 </TD></TR> <TR bgColor=#ffffff> <TD height=30>照度 llluminance </TD> <TD>E </TD> <TD>勒克斯Lm/ãŽ?</TD> <TD>单位面积内所射入光的量,也就是光束除以面积( ãŽ?)所得到的值用来表示某一场所的明亮度 </TD></TR> <TR bgColor=#ffffff> <TD height=50>色温 </TD> <TD>K </TD> <TD>开尔文(K)</TD> <TD>当光源所发出的光的颜色与“黑体”在某一温度下辐射的颜色相同时,“黑体”的温度就成为该光源的色温。“黑体”的温度越高,光谱中蓝色的成分则越多,而红色的成分则越少。例如:白炽灯的光色是暖白色,其色温表示ä¸?2700K ,而日光色荧光灯的色温表示方法则为 6000K ã€?</TD></TR> <TR bgColor=#ffffff> <TD height=30><STRONG>名称 </STRONG></TD> <TD colSpan=3><STRONG>说明 </STRONG></TD></TR> <TR bgColor=#ffffff> <TD height=30>光色 </TD> <TD colSpan=3>光色其实就是色温,大致分为三类:暖色ï¼?3300K ,中间色 3300 è‡?5300K 日光色> 5300K 由于光线中光谱的组成有差别,因此即使光色相同,光的显色性也可能不同ã€?</TD></TR> <TR bgColor=#ffffff> <TD>显色æ€?/TD> <TD colSpan=3>原则上,人造光线应与自然光相同。使用的肉眼能正确辨别事物的颜色 <BR>光源对于物体颜色呈现的程度为显色æ€?<BR>常叫做“显色指数”( RA ï¼?</TD></TR> <TR bgColor=#ffffff> <TD height=30>灯具效率 </TD> <TD colSpan=3>灯具效率(也叫光输出系数)是衡量灯具利用能量的效率的重要标准,它是灯具输出的光通量与灯具内光源输出的光通量之间的比例ã€?</TD></TR> <TR bgColor=#ffffff> <TD height=80>光源效率 <BR>光源效率(Lm/W)=流æ˜?(Lm) <BR>耗电é‡?W)</TD> <TD colSpan=3>也就是每一瓦电力所发出的光的量,其数值越高表示光源的效率越高,所以对于使用时间较长的场所,如办公室走廊、道路、遂道等,效率通常是一个重要的考虑因素ã€?</TD></TR> <TR bgColor=#ffffff> <TD height=30>亮度 </TD> <TD colSpan=3>光源在某一方向上的单位投影而在单位立体角中反射光的数量,称为光源在某一方向的亮度。符号为 L ,单位为 cd / ãŽ?( 坎德拉每平方ç±?) </TD></TR> <TR bgColor=#ffffff> <TD height=30>眩光 </TD> <TD colSpan=3>视野内有亮度极高的物体成强烈的亮度对比,造成视觉不舒适称为眩光ã€?<BR>眩光是影响照明质量的重要因素ã€?</TD></TR> <TR bgColor=#ffffff> <TD height=30>功率因素 </TD> <TD colSpan=3>电路中有用功率与视在功率(电压与电流的乘积)的比值ã€?</TD></TR> <TR bgColor=#ffffff> <TD height=30>平均寿命 </TD> <TD colSpan=3>也就是额定寿命,是指 5 0 %的灯失效的时间 </TD></TR> <TR bgColor=#ffffff> <TD height=30>光束è§?</TD> <TD colSpan=3>光束角指的是灯具 1 âˆ?2 最大光强之间的夹角 </TD></TR></TBODY></TABLE> <br> </div> </div> </div><div style="clear:both"></div></div> <div class="ld_footer hidden-md visible-lg-block hidden-xs hidden-sm"> <hr/> <div class="big"> <div class="ft_left fl"> <a href="/"><img title="广东商友照明有限公司|室内/户外工程照明,路灯,景观照明,工厂照明节能改造专å®? alt="广东商友照明有限公司|室内/户外工程照明,路灯,景观照明,工厂照明节能改造专å®? src="/Templates/cn/images/ft_logo.jpg"/></a> <h2>室内外工程照明灯具制造商</h2> </div> <div class="ft_middle fl"> <h3>热销产品</h3> <p><a href="/ProdClass/LuDeng-107-1.html">路灯</a>|<a href="/ProdClass/JingGuanDeng-108-1.html">景观ç�?/a>|<a href="/ProdClass/gaoganlighting-110-1.html">高杆ç�?/a>|<a href="/ProdClass/tingyuandeng-109-1.html">庭院ç�?/a>|<a href="/ProdClass/LED-GongKuangDeng-61-1.html">led工矿ç�?/a>|<a href="/ProdClass/SuiDaoDeng-103-1.html">隧道ç�?/a></p> 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