http://engineeringtv.com/blogs/etv/archive/2008/09/03/origami-optics.aspxMost camera lenses refract light, leading to the familiar cylindrical tube geometry. In some cases, where extended focal length or reduced track length are required, concentric mirrors can be used to effectively reduce barrel length. Recent advances inenCommunityServer 2007.1 (Debug Build: 20917.1142)http://engineeringtv.com/blogs/etv/archive/2008/09/03/origami-optics.aspx#29874Thu, 04 Sep 2008 21:48:13 GMT47e16688-3829-4dd3-b275-52b24bfef241:29874phydeaux7<p>This is called a reflector telescope. &nbsp;Check out my 14&quot; Cassegerian-Schmidt vs. any similar refactor, and I will be only 28 inches long compared to what, 5 yards? </p> <p>I also own a 500m mirror and 1000 straight (canon) and mirrors have to be real clean to be as sharp. &nbsp;Important when targeting...</p> <img src="http://engineeringtv.com/aggbug.aspx?PostID=29874" width="1" height="1">http://engineeringtv.com/blogs/etv/archive/2008/09/03/origami-optics.aspx#29872Thu, 04 Sep 2008 19:12:17 GMT47e16688-3829-4dd3-b275-52b24bfef241:29872CurtisEllzey<p>Also check out Part 2 to this story, on Engineering TV:</p> <p><a rel="nofollow" target="_new" href="http://engineeringtv.com/blogs/etv/archive/2008/09/04/ultra-thin-imagers.aspx">engineeringtv.com/.../ultra-thin-imagers.aspx</a></p> <p>Lee and Eric dig deeper into the technology and introduce the &quot;Montage&quot; camera, which looks really cool!</p> <img src="http://engineeringtv.com/aggbug.aspx?PostID=29872" width="1" height="1">http://engineeringtv.com/blogs/etv/archive/2008/09/03/origami-optics.aspx#29858Wed, 03 Sep 2008 19:55:52 GMT47e16688-3829-4dd3-b275-52b24bfef241:29858Jacob<p>This is an amazing technology. I look forward to seeing future applications.</p> <img src="http://engineeringtv.com/aggbug.aspx?PostID=29858" width="1" height="1">