131 articles published
Treat the cover glass as part of the lens, because optically that is what it is. A thicker plate sitting in a...
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Decide from the two ends of the height band, not from the average parcel. Put a representative code at the lowest and...
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No honest lens maker will stamp a fresh calibration certificate onto last year’s datasheet, because a datasheet records what the design should...
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A quotation you can compare with another quotation is built from triples, not sentences. Every performance claim must carry three parts: a...
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A custom endoscope lens RFQ produces bids you can compare only when every requirement is written as a number with a tolerance,...
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Settle one question before you touch the CAD template: who moves focus, the camera or the lens. If each of the eight...
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An image that darkens through the day is a measurement question before it is an optics question, and the answer is a...
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A spare lens that has sat on a shelf for two years is not automatically the lens you qualified, and the honest...
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A harder coating is not the answer to weld dust; a sacrificial window is. When a vision cell sits beside a spot...
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