Hi everyone!
I’m a beginner at Zemax. I’m simulating the eye, using Marginal ray height to solve the thickness of surface 4. However, whenever I click on FIRST order in the Macro list to find the focal length, the value at the LDE turns out to be 0.<\/p>\n
<\/p>\n","protected":false},"template":"","class_list":["post-461841","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27789"],"_bbp_topic_id":["461841"],"_bbp_subscription":["713433"],"_bbp_author_ip":[null],"_bbp_last_reply_id":["0"],"_bbp_last_active_id":["461841"],"_bbp_last_active_time":["2026-07-25 03:53:17"],"_bbp_reply_count":["0"],"_bbp_reply_count_hidden":["0"],"_bbp_engagement":["1"],"_bbp_likes_count":["0"],"_btv_view_count":["13"],"application":[null],"emailnotification":[null],"_bbp_topic_status":["unanswered"]},"test":"yenmst99gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/461841","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\/461841\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=461841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}