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|    sci.optics    |    Discussion relating to the science of op    |    12,750 messages    |
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|    Message 11,846 of 12,750    |
|    ggherold@gmail.com to sgpopt...@gmail.com    |
|    Re: Camera Lens Optical Adjustment    |
|    01 May 14 09:33:16    |
      On Thursday, May 1, 2014 6:34:51 AM UTC-4, sgpopt...@gmail.com wrote:       > Hi Folks,       >        > I am having trouble in manufacturing with my project. I have a camera       mounted with an M12 lens but I see large variation in lens tilt so I have to       come up with an adjustment method fairly soon.       >        > This is our first camera module, so please be kind with your comments :)       >        > - I inspected the modules built and CMOS is placed correctly with a worst       case error of 10u, (estimated under microscope) so trying to control in       production is not going to yield a lot of success.       >        > - I measure tilt of the camera using in house software and I see that we       need a way to adjust lens to the camera sensor so that we can get perfect       focus and achieve better MTF. The idea is to replace my current M12 holder       with a custom designed holder        which gives me some capability to automate this process in production and       adjust.        >        >        > I looked around and I couldn't find a single M12 (S Mount) holder that gives       me this type of capability. I would have thought, people run into this problem       and end up developing holders with this capability, but I couldn't locate one.       I would        appreciate ideas how to deal with this.              First I know almost nothing about what you are doing. Most of the time I just       use lens on a bread board to focus light or make images. I do use a lens tube       for a diode laser, that has a very "tweaky" lens adjustment.. but I can only       move it along the Z-       axis (the direction of the light.)               Next some questions: So it's the angular orientation of the lens/CCD that is       in error? As opposed to a translation error. (motion along the X,Y or Z       axis) (I assume that is your 10u comment.. and that 10u is 10 um (microns).)               So if it was me I'd first try and figure out where the angular mismatch is       coming from. Is it the lens? Does every lens cause the same misalgnment?       Is it the lens holder? (again try different holders.) Is it the mounting of       the lens in the holder? (remount and test again.) Or is it the connection       between the lens holder and CCD piece.               George H.              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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