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OPT3001-Q1: Total Error Estimation

hideyuki sakai
Mastermind 6250 points
Part Number: OPT3001-Q1

Dear, Sir.

My customer is considering to apply OPT3001-Q1 for back-light luminance automatic

adjuctment. Now, They are trying to estimate the Total error of the device.

I also tried to picked up the paramemters which are related to the error factor.

Looks there were 7 items, at least.

I wonder the total error would be the sum of #1 ~ #7? 

Please give your advice.

PS)

I think #1 & #7 are quite similar, but I can't determined.

Best Regards,

H. Sakai

  • 0
    TI__Mastermind 25895 points
    Hi Hideyuki,

    The error would not be just the sum of #1 to #7. Depending on the conditions certain error factors should be considered and applied accordingly. For example, #1 resolution is the smallest lux the OPT can measure and thus not an error factor unless the lux is on the order of 0.01 lux. #7 dark condition should only be considered when there is no light. #4 should be considered based on the IR exposure. If the conditions are taken into account and the error estimated correctly from these parameters, however, they can be used to estimate the error as you suggest.

    Best,

    Alex
  • 0 in reply to Alex Bhandari-Young
    Mastermind 6250 points

    Dear, Alex-san.

    Thank you so much for your advice.

    Last time, I mentioned the total error to sum of #1 to #7.

    You ponied out the conditions certain error factors.

    I tried to reconsider the best way to estimate the total error, and then

    found the conclusion by myself as below ;

    #2 is the testing result with white LED(calibrated 2k lux) & IR LED(850nm).

    This result should be included #1(LSB), #3(Relative accuracy), #4(IR response),

    #5(Linearity), #7(Dark condition).

    If the testing was executed at 25 deg.C.

    The sum of #2 & #6 would be estimated as the total error.

    How do you think about my conclusion?  Please give your advice.

    Best Regards,

    H. Sakai

  • 0 in reply to hideyuki sakai
    TI__Mastermind 25895 points
    Hi Sakai,

    For #2 I believe it is just with a white LED and #4 is just the 850nm IR LED. You'll see that the footnote applies to both #2 and #4.

    Yes, #2 to #6 makes sense.

    Best,

    Alex