{"id":95079,"date":"2025-06-27T02:05:15","date_gmt":"2025-06-27T06:05:15","guid":{"rendered":"http:\/\/pappp.net\/?guid=1cdbceaa7b668165c42a4f7e17e9ce6a"},"modified":"2025-06-27T02:05:15","modified_gmt":"2025-06-27T06:05:15","slug":"apple-just-patented-an-image-sensor-with-20-stops-of-dynamic-range","status":"publish","type":"post","link":"https:\/\/pappp.net\/?p=95079","title":{"rendered":"Apple Just Patented an Image Sensor with 20 Stops of Dynamic Range"},"content":{"rendered":"<p class=\"syndicated-attribution\">Source: <a href=\"https:\/\/ymcinema.com\/2025\/06\/25\/apple-just-patented-an-image-sensor-with-20-stops-of-dynamic-range\/\">Hacker News<\/a><\/p>\n<div style=\"background-color : #fff7d5;\n\t\t\tborder-width : 1px; padding : 5px; border-style : dashed; border-color : #e7d796;margin-bottom : 1em; color : #9a8c59;\">Article note: Neat.  It's leaning into the design space where you get a small sensel (For fill factor and resolution), and stacked dies mean you can pack quite a bit of readout circuity behind the photsensitive layer. \n \nTheir sensel is basically a photodiode pumping a pair of (MOS) capacitors in vague-power-of-10 sizes attached, with a more sophisticated readout circuit that will separately read the charge on the diode junction capacitance and the caps to get three simultaneous ranges out of one sensel, for post-exposure auto-ranging.  A little noise modeling on top and it's a good idea. \n\nWe've got an undergrad in the lab I'm working in this summer working on a hand-made 4x4 LED array as a sensor to validate a different readout regime, but the same basic LED leakage charging the junction capacitance + noise model sensing mechanism.<\/div><a href=\"https:\/\/news.ycombinator.com\/item?id=44394070\" rel=\"noopener noreferrer\">Comments<\/a>","protected":false},"excerpt":{"rendered":"<p>Comments<\/p>\n<p> <a href=\"https:\/\/pappp.net\/?p=95079\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[226],"tags":[],"class_list":["post-95079","post","type-post","status-publish","format-standard","hentry","category-news-2"],"_links":{"self":[{"href":"https:\/\/pappp.net\/index.php?rest_route=\/wp\/v2\/posts\/95079","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pappp.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pappp.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pappp.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pappp.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=95079"}],"version-history":[{"count":0,"href":"https:\/\/pappp.net\/index.php?rest_route=\/wp\/v2\/posts\/95079\/revisions"}],"wp:attachment":[{"href":"https:\/\/pappp.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=95079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pappp.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=95079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pappp.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=95079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}