By Shengyi Li, Yifan Dai
"A whole all-in-one connection with aspheric fabrication and trying out for optical purposes This e-book offers a close advent to the producing and dimension applied sciences in aspheric fabrication. for every expertise, either easy conception and functional purposes are brought. The ebook involves components. within the first half, the elemental ideas of producing expertise for aspheric surfaces and key concept for deterministic subaperture sharpening of aspheric surfaces are mentioned. Then key innovations for prime precision figuring equivalent to CCOS with small sprucing pad, IBF and MRF, are brought, together with the elemental rules, theories and functions, mathematical modeling equipment, desktop layout and strategy parameter choice. it is also engineering practices and experimental effects, in line with the 3 types of sharpening instruments (CCOS, IBF and MRF) constructed by way of the author's examine group. within the moment half, easy ideas of dimension and a few commonplace examples for big and middle-scale aspheric surfaces are mentioned. Then, in response to the calls for of least expensive, excessive accuracy and in-situ size equipment within the production technique, 3 sorts of applied sciences are brought, comparable to the Cartesian and swing-arm polar coordinate profilometer, the sub-aperture sewing interferometer and the part retrieval approach in response to diffraction precept. a few key recommendations also are mentioned, together with the elemental ideas, mathematical modeling tools, computer layout and technique parameter choice, in addition to engineering practices and experimental effects. eventually, the team's examine effects approximately subsurface caliber size and warrantly tools also are defined. This publication can be utilized as a reference for scientists and technologists operating in optical production, ultra-precision machining, precision tools and size, and different precision engineering fields. an entire all-in-one connection with aspheric fabrication and checking out for optical functions offers the most recent learn findings from the author's across the world famous major crew who're on the leading edge of the know-how Brings jointly floor processing and size in a single whole quantity, discussing difficulties and suggestions publications the reader from an introductory evaluation via to extra complex and complicated ideas of metrology and production, appropriate for the scholar and the expert "-- starting place of the Aspheric Optical sprucing know-how -- the fundamental idea of Aspheric Optical Lapping and sprucing expertise -- CCOS know-how according to Small sprucing Pad -- Ion Beam Figuring expertise -- Magnetorheological Figuring -- overview of Deterministic Optical Machining blunders -- size expertise in production of Large-Middle Optical Surfaces -- Coordinate Measuring know-how of Optical Aspheric floor -- Subaperture sewing Interferometry -- part Retrieval In Situ trying out of Large-Middle Optical Surfaces -- Subsurface harm of Optical parts in production tactics.
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Extra info for Large and middle-scale aperture aspheric surfaces : lapping, polishing and measurement
3. The high frequency roughness (HSFR,): for space wavelength smaller than the micron region, its scattering is not in the field of view. The loss of energy does not affect the image quality. 2 nm RMS. The large-scale ultra-smooth surface manufacturing with complex form is carried out on the basis of the aspheric processing, meaning to accomplish more high-precision processing, by combination of mechanical pad CCOS (Computer Controlled Optical Surfacing), MRF and IBF (Ion Beam Figuring) methods.
The viscosity of magnetic fluid and polishing film flexibility can be controlled by computer. Their removal function is stable in long-term processing, so it is a suitable method for efficient and precise modification. Jet polishing (JP) is a polished molding technology for processing the complex shaped surface of optical components. The MR fluid jet polishing (MJP) technology is a new one combined with the JP and MRF for optical complex surface polishing. Through the computer’s real-time control, in principle, it can polish any shaped surface and size of the optical components, and in that there may be a fundamental solution to the edge effect and subsurface damage problems.
Work in vacuum, processed optical materials are limited, material removal efficiency is low, high investment. 4) where, [K], [S], [F], and [Δ] are the matrix of tool stiffness, deformation, stress, and flexibility respectively. 2 to show the distribution of rigidity and flexibility of the polishing mold. The polishing tools can consist of the polishing pad and the film, and also the so-called polishing mold together. In order to facilitate the description, we divide polishing mold mass up in one line as a one-dimensional distribution, and define the centralized mass of the polishing mold as (m1, m2,…mn), and (k1, k2,…kn) its vertical stiffness.