Design and realization of two-dimensional beam steering actuated by dielectric elastomer

Cheng, Yang; Cao, Jie; Chen, Chuanxun; Li, Zhikuo; Bao, Chun; Hao, Qun

doi:10.1016/j.optcom.2021.127557

Cited by 5 publications

(1 citation statement)

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“…Different from the traditional varifocal lens that changes the focal length through the axial shifting of solid lenses, the Alvarez lenses can provide precise and rapid dynamic adjustment of optical power through the lateral displacement of two cubic phase masks [ 32 , 33 , 34 ]. The Alvarez lenses have recently been regarded as an attractive method to achieve varifocal function rapidly while still maintaining a compact structure [ 35 ]. The decentered lens method is a promising option to achieve the scanning function because of its simplicity, which is only composed of two lenses.…”

Section: Introductionmentioning

confidence: 99%

A Compact Two-Dimensional Varifocal Scanning Imaging Device Actuated by Artificial Muscle Material

et al. 2023

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This paper presents a compact two-dimensional varifocal-scanning imaging device, with the capability of continuously variable focal length and a large scanning range, actuated by artificial muscle material. The varifocal function is realized by the principle of laterally shifting cubic phase masks and the scanning function is achieved by the principle of the decentered lens. One remarkable feature of these two principles is that both are based on the lateral displacements perpendicular to the optical axis. Artificial muscle material is emerging as a good choice of soft actuators capable of high strain, high efficiency, fast response speed, and light weight. Inspired by the artificial muscle, the dielectric elastomer is used as an actuator and produces the lateral displacements of the Alvarez lenses and the decentered lenses. A two-dimensional varifocal scanning imaging device prototype was established and validated through experiments to verify the feasibility of the proposed varifocal-scanning device. The results showed that the focal length variation of the proposed varifocal scanning device is up to 4.65 times higher (31.6 mm/6.8 mm), and the maximum scanning angle was 26.4°. The rise and fall times were 110 ms and 185 ms, respectively. Such a varifocal scanning device studied here has the potential to be used in consumer electronics, endoscopy, and microscopy in the future.

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Section: Introductionmentioning

confidence: 99%