Review on polishing technology of small-scale aspheric optics

Peng, Yunfeng; Shen, Bingyi; Wang, Zhenzhong; Yang, Ping; Yang, Wei; Bi, Guo

doi:10.1007/s00170-021-07202-3

Cited by 45 publications

(9 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Afterwards, under the effect of surface tension, the droplet undergoes the reforming stage, the spreading radius of the droplet decreases, and the droplet reverts to the spherical shape. In addition, the same as traditional AJP 35 , due to the spraying and moving of jet fluid, there is a stress field and velocity field distributed on the KDP surface. After the impact process, the stress caused by the stress field keeps the water cores contacting the KDP surface, while the velocity field keeps the water cores moving on the KDP surface.…”

Section: Resultsmentioning

confidence: 99%

Novel abrasive-free jet polishing for Bulk single-crystal KDP with a low viscosity microemulsion

Zhang

Fan

Gao

et al. 2022

Sci Rep

View full text Add to dashboard Cite

In present work, the abrasive-free jet polishing (AFJP) of bulk single-crystal KDP was first fulfilled, when using a newly-designed low-viscosity microemulsion as the AFJP fluid. The novel AFJP fluid shows a typical water-in-oil structure, in which the water cores uniformly distribute in the BmimPF6 IL, with a particle size of about 20–25 nm. What’s more, the AFJP fluid is a controllable and selective non-abrasive jet fluid that the shape of the removal function is regular and smooth, presenting a similar Gaussian function, meanwhile, the dispersion coefficient of the removal rate is only 1.9%. Finally, the surface quality of the bulk single-crystal KDP is further improved by AFJP, meanwhile, the subsurface damage is first obviously mitigated.

show abstract

Section: Resultsmentioning

confidence: 99%

Novel abrasive-free jet polishing for Bulk single-crystal KDP with a low viscosity microemulsion

Zhang

Fan

Gao

et al. 2022

Sci Rep

View full text Add to dashboard Cite

show abstract

“…At present, the main contact processing methods include bonnet polishing, small tool polishing, stress‐lap polishing, etc. [ 16 ] Zhang et al [ 17 ] designed a semiflexible small polishing disc tool with microstructure and combined it with the polishing method of constant speed and variable speed for screw feed to improve the uniformity of surface roughness distribution. The surface roughness dispersion coefficient was reduced from 41.6% to 12.7%.…”

Section: Introductionmentioning

confidence: 99%

Research on High‐Efficiency Curved Surface Polishing with Even Distribution of Slurry Based on Dielectrophoresis

Deng,

Zhang,

Sun

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

To overcome the problems of low slurry utilization and poor surface uniformity in conventional small tool polishing of curved surfaces. A small tool polishing method based on slurry dielectrophoresis (STP‐DEP) is proposed. The dielectrophoretic effect distributes the slurry evenly and increases its dwell time in the processing area, enabling more abrasives to participate in polishing, thereby improving the material removal efficiency and surface uniformity of the workpiece. The observation experiment indicates that dielectrophoresis can efficiently distribute the slurry evenly. Compared with the traditional small tool polishing, the results show that the polishing efficiency of the STP‐DEP is improved by 34 % on the premise of achieving the same surface roughness Ra of the workpiece. Taguchi experiments are carried out on K9 convex lens. Results show that the optimal surface roughness Ra 3.3 nm (Initial Ra 2400 nm, processing time 120 min) is obtained when the tool speed is 400 rpm, the pressing amount is 1 mm, the infeed angle is 15° and the abrasive size is 3 μm. The research proves that the STP‐DEP successfully solves the problem of slurry uneven distribution, and realizes efficient surface polishing with high surface uniformity.This article is protected by copyright. All rights reserved.

show abstract

“…In the relentless quest for pioneering breakthroughs in ophthalmic lens technology, researchers and manufacturers are continually seeking materials that harmonize innovation with user well-being and environmental responsibility. [1,2] Amid this dynamic landscape, two extraordinary contenders have risen to the forefront-chitosan and starch. These biocompatible and sustainable materials hold the promise of reshaping the very foundations of advanced ophthalmic lenses, offering a myriad of unique advantages.…”

Section: Introductionmentioning

confidence: 99%

Revolutionizing Lens Technology: Chitosan and Starch in Next‐Gen Ophthalmic Lenses

Aljibori,

Shaker,

Alamiery

et al. 2023

Starch Stärke

View full text Add to dashboard Cite

This comprehensive review explores the transformative impact of chitosan and starch in advancing ophthalmic lens technology. Derived from chitin, chitosan and starch‐based materials stand out for their exceptional biocompatibility, moisture retention, and optical clarity. The synergy between these biopolymers has unlocked new frontiers in lens design and coatings, promising elevated performance. The article scrutinizes their multifaceted applications, ranging from innovative lens materials to advanced coatings, while emphasizing their regulatory approvals and commitment to environmental sustainability. Chitosan and starch emerge as vanguards, ushering in a future marked by enhanced wearer comfort, optical clarity, and ecological responsibility. This review encapsulates their paramount significance, current applications, and exciting potential, portraying them as pioneers in shaping the next generation of state‐of‐the‐art ophthalmic lenses.

show abstract

Review on polishing technology of small-scale aspheric optics

Cited by 45 publications

References 78 publications

Novel abrasive-free jet polishing for Bulk single-crystal KDP with a low viscosity microemulsion

Novel abrasive-free jet polishing for Bulk single-crystal KDP with a low viscosity microemulsion

Research on High‐Efficiency Curved Surface Polishing with Even Distribution of Slurry Based on Dielectrophoresis

Revolutionizing Lens Technology: Chitosan and Starch in Next‐Gen Ophthalmic Lenses

Contact Info

Product

Resources

About