Aplanatic Cemented Doublet Design

Dreyfus, Marc G.; Bishop, Ruth; Moorhead, J. E.

doi:10.1364/josa.50.000375

Cited by 7 publications

(1 citation statement)

References 2 publications

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“…Since the realisation of the first cemented doublets in the mid-19th century, optical cements have played a key role for the manufacture of optical systems and instruments. Nowadays, classical resins and modern UV-curable cements are used for realising a variety of bonded optical components such as aplanatic, achromatic or apochromatic lenses [1][2][3][4][5]. Further, such optical cements are used for connecting optical communications devices, i.e., fibres and waveguides [6,7], for mounting optics [8,9] and for photonic packaging [10].…”

Section: Introductionmentioning

confidence: 99%

Improving the Adhesiveness of Cemented Glass Components by DBD Plasma Pre-Treatment at Atmospheric Pressure

Gerhard¹,

Mielke²,

Brückner³

et al. 2019

Applied Sciences

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Cemented optical components and groups are essential devices for the realisation of modern systems and apparatuses used in a broad range of different applications such as telecommunications, imaging and even surgery. However, various parameters may affect the stability of cemented connections. In this context, the impact of dielectric barrier discharge plasma at atmospheric pressure on the adhesiveness of cemented glass components was evaluated in the present work. For this purpose, the plasma-induced change in surface wettability and energy as well as the cement’s adhesive pull strength was measured. Investigations were performed on samples, which were subject to different procedures of artificial ageing. It is shown that the adhesive pull strength of cemented glass components was notably increased after a short-term plasma treatment of merely 10 s due to an enhanced wettability of the applied UV-curing optical cement. The pull strength, i.e., the adhesiveness of cemented glasses was increased by a factor of 2.1 to 4.6, depending on the particularly applied artificial ageing procedure. The results and findings finally demonstrate the high potential of the applied short-term plasma treatment as a cleaning and surface activation step in optics manufacturing on an industrial scale.

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