131 articles published
No — a general specification sheet describes a family; it cannot prove a reworked endoscope module equals your original instrument. Equivalence rests...
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You have five years of production on an approved lens and no plan for the day it stops. The first thing to...
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The short answer: the arithmetic that says an image circle covers a sensor is necessary, and it is not sufficient. When the...
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Splitting a scope into a tip objective and a relay only works if the interface between them is treated as a controlled...
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When a single radial set screw is turned against a threaded M12 barrel, it does not lock the lens in the position...
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A stiff focus ring is a mechanism symptom, not a verdict, and the replacement decision belongs to measurements rather than to how...
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A standard warranty does not protect a station that runs at the edge of its specifications, because the edge is usually undefined....
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Field of view, working distance and housing length are one relationship, not three settings, so photographing them as a negotiation of three...
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The focus moved because the lens is corrected for the visible band and 850 nm does not come to the same image...
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