<P>不是很明白,我整理一下,.请看一下这么说对不对.</P>
<P><img src="attachments/dvbbs/2005-11/2005111919355381192.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-11/2005111919355381192.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /></P>
<P>图中a为光照角度;s为发光点;黑色线为反光碗。</P>
<P>手电的光照角度与反光碗有密切的关系:<br>1.发光点不变,反光碗越深,聚光角度不变,泛光角度越小;<br>2.发光点不变,反光碗越大,聚光角度越大,泛光角度也随着增大。<br></P>
[此贴子已经被作者于2005-11-19 19:40:44编辑过]
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