{"id":437195,"date":"2025-07-18T09:18:30","date_gmt":"2025-07-18T09:18:30","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/illumination-across-a-circular-disc-edge\/"},"modified":"2025-07-18T09:18:30","modified_gmt":"2025-07-18T09:18:30","slug":"illumination-across-a-circular-disc-edge","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/illumination-across-a-circular-disc-edge\/","title":{"rendered":"Illumination across a circular disc edge"},"content":{"rendered":"<p>&lt;p&gt;Hi,&lt;\/p&gt;&lt;p&gt;Consider a ring of 50mm outer dia and 25 mm inner dia. and a thickness of 5mm. I want to achieve a uniform lighting across the 5mm thickness. only this area is visible from outside.&lt;\/p&gt;&lt;p&gt;I was thinking about placing LEDs (625nm) through out the inner surface (LED facing the ring)&lt;\/p&gt;&lt;p&gt;My question is , How do I visualize\/Analyze the irradiance across the ring edge.Though I use Polar detector, I am not confident about the results provided by that option.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Thanks in advance,&lt;\/p&gt;&lt;p&gt;Arun&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-437195","topic","type-topic","status-publish","hentry","topic-tag-non-sequential","topic-tag-opticstudio","topic-tag-polar-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27816"],"_bbp_topic_id":["437195"],"_bbp_subscription":["522162","50911"],"_bbp_author_ip":["136.226.232.172"],"_bbp_last_reply_id":["437320"],"_bbp_last_active_id":["437320"],"_bbp_last_active_time":["2025-07-21 13:45:00"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["522162","50911"],"_btv_view_count":["98"],"_bbp_topic_status":["unanswered"]},"test":"arun-tvatlascopco-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/437195","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\/437195\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=437195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}