On-site training for standards and specifications

Surface imperfection specifications (i.e. Scratch-Dig) are among the most misunderstood, misinterpreted, and ambiguous of all optics component specifications. This extremely popular course provides attendees with an understanding of the source of ambiguity in surface imperfection specifications, and provides the context needed to properly specify surface imperfections using a variety of specification standards, and to evaluate a given optic to a particular level of surface imperfection specification. The course will focus on the differences and application of the MIL-PRF-13830, ISO 10110-7, and ANSI/OEOSC OP1.002. Many practical and useful specification examples are included throughout, as well as demonstration of visual comparison evaluation techniques and artifacts.

While understanding surface imperfection specifications is the first step, learning how to actually perform the inspection is just as important. This hands-on workshop with allow attendees to learn the “Best Practice” for inspecting optical surfaces. The course has many demonstrations and labs and gives attendees lots of practice handling and inspecting optics with the oversight of a trained master inspector. The course is based on the concept of learning by doing, with many hands-on labs. As a result, class size is limited to 12 inspectors. Note that "Understanding Scratch and Dig" is a prerequisite for this class.

Surface roughness causes scatter and system transmission loss, while waviness and mid-spatial frequency ripple can cause loss of resolution, image quality, veiling glare, beam modulation and a host of other issues. In the past 30 years, new specifications like gradients, correlation values, PSDs and MSF ripple specifications have been introduced. Most users do not completely understand these new notations however, and the meaning of even a simple RMS roughness specification has become obscure, or even meaningless. The course covers the key factors associated with surface texture and roughness on optical surfaces, and how to understand their impact in optical system performance using the Power Spectral Density Function.

This course provides attendees with an introduction of OP1.0110, the American National Standard for optics drawing notations. The course begins with the context of optics drawings and the fundamentals of the ISO 10110 drawing layout. Next we will go through each of the tolerance notations for glass parameters, surface wave front, wedge, and surface texture and coating. We will go in depth into the different methods of specifying surface imperfections. Throughout the course, attendees are also informed about the changes that are likely for ISO 10110 in the future and how the American version differs from the current international standard. Practical and useful examples are included throughout.

In addition to the Roughness, Surface Imperfection and ISO training described above, we can work with you to develop on-site optics training for your design, manufacturing, and quality engineering personnel. Contact us to learn more.