Selection of Preform in Glass Molding Press of Aspherical Chalcogenide Lens

Zhu, Yongjian; Wang, Mohang; Chen, Suifan; Cao, Shuai; Fan, Yufeng

doi:10.1088/1757-899x/493/1/012148

Cited by 1 publication

(2 citation statements)

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“…To fabricate a mold insert using CC, micromachining is a suitable approach to ensure geometric accuracy and surface smoothness. For example, Zhu et al [ 132 ] performed ultraprecision diamond grinding on CC CW500 followed by the addition of a diamond-like carbon (DLC) coating to produce positive and negative aspherical surfaces. Then, these aspherical surfaces were transferred to chalcogenide glass to fabricate a double-sided aspherical lens for an IR detector.…”

Section: Mold Materials For Precision Glass Moldingmentioning

confidence: 99%

“…Examples of micro/nano glass molding with CC, Al alloys, polycrystalline diamond, and fused silica molds are summarized in Table S6 in the Supplementary Material [ 132 , 134 , 135 , 136 , 138 , 139 , 140 , 141 , 142 , 143 ]. CC is a very hard alloy material that can be utilized for the molding of both low and high T g glass material.…”

Section: Mold Materials For Precision Glass Moldingmentioning

confidence: 99%

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A Comprehensive Review of Micro/Nano Precision Glass Molding Molds and Their Fabrication Methods

et al. 2021

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Micro/nano-precision glass molding (MNPGM) is an efficient approach for manufacturing micro/nanostructured glass components with intricate geometry and a high-quality optical finish. In MNPGM, the mold, which directly imprints the desired pattern on the glass substrate, is a key component. To date, a wide variety of mold inserts have been utilized in MNPGM. The aim of this article is to review the latest advances in molds for MNPGM and their fabrication methods. Surface finishing is specifically addressed because molded glass is usually intended for optical applications in which the surface roughness should be lower than the wavelength of incident light to avoid scattering loss. The use of molds for a wide range of molding temperatures is also discussed in detail. Finally, a series of tables summarizing the mold fabrication methods, mold patterns and their dimensions, anti-adhesion coatings, molding conditions, molding methods, surface roughness values, glass substrates and their glass transition temperatures, and associated applications are presented. This review is intended as a roadmap for those interested in the glass molding field.

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Section: Mold Materials For Precision Glass Moldingmentioning

confidence: 99%