Minimum detectable size and its measurement conditions
In an object-detection specification, resolution can mean minimum detectable object size rather than distance-measurement precision. Object size, detection height and response time are separate quantities. The sensing mode, sensitivity and working distance can also qualify the minimum-object value.
Ask which dimension of the object is specified, which sensing mode applies and where the specification holds. Do not substitute the tablet’s nominal length if the actual orientation presents a different dimension to the sensing field. The proposed product and trajectory belong in the comparison.
Does detecting a small object prove that two nearby tablets can be counted separately?
No. Minimum object size, spatial coverage and the time available to distinguish events are separate questions. A finer object-size specification does not itself establish a usable clear interval between successive products or the behavior when they overlap. Keep double-product discrimination evidence separate from a minimum-object claim.
A measurement sensor’s ability to separate a target from its background is another distinct specification. It is not the same distance as the gap between falling tablets. Use the definition for the actual sensing task rather than importing a similarly named quantity into a counting requirement.