WebThe SavvyInspector ® SIL-4 allows scratch and dig measurement for curved surfaces. For plano or concave/convex surfaces with less than 15° of surface slope. 1.4 megapixel camera for higher special resolution to perform precise measurements and grading on very small features. Manual X, Y slide stage, manual tip and tilt stage and motorized 70 ... WebIn this case, the 40 corresponds to a maximum physical diameter of 400µm in the size of a dig, but the 60 must be compared to a reference standard scratch. An optic must be inspected using specific lighting and viewing configurations, and it is the “apparent brightness” of the scratch on the optic that is compared to a standard.
Specifying Scratch/Dig of an Optical Surface MIL-0-13830
WebDig: A small rough spot on the part surface similar to a pit in appearance. A bubble is considered a dig. Surface stains are also considered digs. Visibility Method Scratch/Dig: Surface quality is specified by a number such as 60/40. The 60 defines a scratch width according to a visual standard (it does not mean a scratch can be 60 um wide). WebFor both scratch and dig specifications, smaller numbers are desirable. Flatness. Optics manufacturers often specify optical surface flatness using a "peak to valley" (P-V) measurement. This value is the difference between the relative highest and lowest points of the optical surface. P-V is expressed as a ratio of a set wavelength, as shown in ... partial month invoice amounts crossword
Specifying Scratch/Dig of an Optical Surface MIL-0 …
WebAs for surface quality, scratch-dig specifications can be better than 20-10, with surface roughness in a range between 3 and 20 Å, primarily based on the pad/slurry combination. Some DSLP vendors also employ a secondary polish process to improve cosmetics and surface roughness. WebScratch-dig specifications of 40-20 are widely considered standard quality for many optical applications. Precision laser applications typically require a scratch-dig of 20-10, whereas the most demanding laser applications, such as intra-cavity laser optics, usually require a … WebScratch-dig specifications of 40-20 are widely considered standard quality for many optical applications. Precision laser applications typically require a scratch-dig of 20-10, whereas the most demanding laser applications, such as intra-cavity laser optics, usually require a scratch-dig of 10-5. partial meniscectomy surgery