Friday, August 19, 2016

Canon Proposes "Teardrop" Microlens

Canon patent application US20160233259 "Solid state image sensor, method of manufacturing solid state image sensor, and image capturing system" by Yasuhiro Sekine proposes a "teardrop" shaped microlens in order to reduce lens shading on the periphery of the pixel array:

Posted by Vladimir Koifman at 11:02

3 comments:

  1. AnonymousAugust 19, 2016 at 12:50 PM

    Can this be practically realized?

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    Replies
    1. UnknownAugust 19, 2016 at 3:57 PM

      Most likely a rudimentary form that performs slighly better and doesn't look anything like the picture. I imagine they're covering themselves for the day they can makes something like this. I wonder what the effect would be on lenses with a large exit pupil that telecentric? Might make it worse.

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    2. Vladimir KoifmanAugust 19, 2016 at 4:11 PM

      Well, this patent app, at least, looks possible. There is another recent one from Canon that would never work for too many reasons:

      http://www.freepatentsonline.com/y2016/0234448.html

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