Prismatic film<br/> <table border="0" cellpadding="0" cellspacing="0"><tr><td class="articleid-part">1</td><td class="articleid-part">220</td><td class="articleid-part">173</td><td class="articleid-part">009</td></tr></table> <br /> <br /> for linear beam control, vertical<br/><br/> <br /> <br />