WebWitness samples allow testing without handling the actual part, to ensure the coating process is accurate before moving forward with the optical component. And after coating, the witness samples are often used to measure reflectivity, transmission, and polarization, as well as humidity, temperature, durability, and salt fog tests. WebJan 10, 2024 · The reflectance of an optical witness sample (OWS), a magnesium fluoride coated aluminum, first surface mirror, shall be within the allowable limits of vacuum …
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WebWitness Samples Custom witness samples available in standard 1″ or 2″ diameters as well as custom sizes. Best practices suggest that when coating or setting up an optical component, it’s best to use a witness sample, also called a “test piece,” to ensure that the actual part will match your specific coating specifications and your application. WebOptical coating witness sample test pieces for thin film coating will match your finished product, allowing testing without using the finished part. This can be used for testing … how many books are in door 50
Use of a backside roughened sample for multiple optical …
WebThe witness samples provided by 1T Optics include a full range of brands such as CDGM, Schott, CORNING, etc. The general diameter is about 1” and the thickness is 1-3mm, which … WebWhen Mil Spec optics are involved, a witness sample is run through the initial gamut of Mil Spec testing in order to prove that the design can withstand the requirements before the project is approved to run as a full batch. The military may require testing for each batch. WebWitness Samples are essential to maintaining accuracy, repeatability and traceability of any thin film coating operation. Witness Samples aid in the measurement of transmission and … Witness sample diameter is 25.40mm and the thickness is 1.50mm. All of our wit… high price chocolate bars