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6CCVD Research

Fabrication of aspheric diffractive lens with high precision by precision glass molding

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2023-12-29
AuthorsChengsong Shu, Shaohui Yin, Zhaozhao Mao
InstitutionsHunan University, Yangtze Optical Electronic (China)
Citations1

Abstract

Section titled ā€œAbstractā€

Aspheric diffractive lens (ADL) has been widely used in wavefront shaping and infrared field as it can realize optical system aberration elimination and chromatic aberration correction. However, the fabrication of high-precision glass ADL is a challenge. In this paper, A manufacturing method is proposed for high-precision aspheric diffraction mold (ADM), including mold substrate and plating selection, plating layer heat treatment, and single-point diamond turning (SPDT) process. The mold is pre-compensated to improve the molding accuracy based on the simulation-predicted form error of glass ADL. Based on the machined high-precision ADM, an ADL with an aspheric form accuracy of 0.2133 Ī¼m, a diffraction zone with a form accuracy PV of 22.5- 95 nm, and a surface roughness Sa of 2.813 nm was fabricated using a multi-step heating and annealing molding process.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
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  3. 2023 - Fabrication of curved aspheric compound eye microlens array with high surface quality by precision glass molding, Precision Engineering
  4. 2022 - Fabrication of extreme wettability surface for controllable droplet manipulation over a wide temperature range, Int. J. Extrem. Manuf
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  6. 2023 - Bamboo-shaped pumpless platform for long-distance and lossless droplet transport, Appl. Surf. Sci
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  8. 2022 - Study on the blackening phenomenon of leaded glass during microgroove molding using nickel phosphorous mold, Ceram. Int
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