{"id":392516,"date":"2024-11-04T02:36:43","date_gmt":"2024-11-04T02:36:43","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/rotation-of-cylindrical-lens-affects-other-surfaces\/"},"modified":"2025-01-08T15:10:38","modified_gmt":"2025-01-08T15:10:38","slug":"rotation-of-cylindrical-lens-affects-other-surfaces","status":"answered","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/rotation-of-cylindrical-lens-affects-other-surfaces\/","title":{"rendered":"Rotation of cylindrical lens affects other surfaces"},"content":{"rendered":"<p>&lt;p&gt;&lt;p&gt;Hello,&lt;\/p&gt;&lt;p&gt;I&#8217;m trying to rotate a cylindrical lens by 90 degrees so that a different axis of the beam is focused. This is the system before any coordinate breaks:&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/04-11-2024-1730687464-mceclip0.png\" width=\"845\" height=\"414\" \/>&lt;\/p&gt;&lt;p&gt;I want to have the beam collimated before the paraxial lens and then converge\/diverge afterwards. This requires a rotation of the cylindrical lens. However, rotating the lens doesn&#8217;t affect the beam, and instead affects the subsequent surfaces. This:&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/04-11-2024-1730687619-mceclip1.png\" width=\"689\" height=\"409\" \/>&lt;\/p&gt;&lt;p&gt;Results in this:&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/04-11-2024-1730687668-mceclip2.png\" width=\"926\" height=\"475\" \/>&lt;\/p&gt;&lt;p&gt;Where you can see that the final surface has changed while the beam shape has not. Am I doing something wrong with the tilt? The coordiante break is setup to have 90 degree tilt in z and -90 tilt afterwards.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-392516","topic","type-topic","status-answered","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello,I&#039;m trying to rotate a cylindrical lens by 90 degrees so that a different axis of the beam is focused. This is the system before any coordinate breaks:I want to have the beam collimated before the paraxial lens and then converge\/diverge afterwards. This requires a rotation of the cylindrical lens. 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