{"id":394519,"date":"2024-11-20T13:01:31","date_gmt":"2024-11-20T13:01:31","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/zemax-cad-export-problems-with-tilted-surfaces\/"},"modified":"2024-11-20T13:01:31","modified_gmt":"2024-11-20T13:01:31","slug":"zemax-cad-export-problems-with-tilted-surfaces","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/zemax-cad-export-problems-with-tilted-surfaces\/","title":{"rendered":"ZEMAX CAD export problems with tilted surfaces"},"content":{"rendered":"<p>&lt;p&gt;Hi all,&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;I struggle to get the Zemax CAD export towards STEP files to work, as tilted surfaces are either not exported at all, or appear at the wrong location.&nbsp;&lt;\/p&gt;&lt;p&gt;One example here: The object to the right being a diffraction grating between two prisms (grism). This is the Zemax layout:&lt;br&gt;&lt;br&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/20-11-2024-1732107440-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;and this is what the .stp export looks like:&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/20-11-2024-1732107626-mceclip2.png\" \/>&lt;\/p&gt;&lt;p&gt;The grism being compacted and translated to the front of the optical train.&nbsp;&lt;\/p&gt;&lt;p&gt;Also surface type &#8220;tilted&#8221; seems not to export at all. Is this a bug?&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-394519","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["88.97.192.58"],"_btv_view_count":["946"],"_bbp_topic_status":["unanswered"],"_bbp_subscription":["72361","50911"],"_bbp_topic_id":["394519"],"_bbp_forum_id":["27816"],"_bbp_engagement":["50911","72361"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["395617"],"_bbp_last_active_id":["395617"],"_bbp_last_active_time":["2024-11-28 07:49:08"]},"test":"jurgen-schmolldurham-ac-uk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/394519","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/394519\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=394519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}