Design and Integration of the Single-Lens Curved Multi-Focusing Compound Eye Camera

Tao, KeKai; Lian, Gaoge; Liu, Yongshun; Xing, Huaming; Xing, Yi; Su, Xiangdong; Wu, Yihui

doi:10.3390/mi12030331

Cited by 7 publications

(4 citation statements)

References 27 publications

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“…In this study, we first designed the base of the compound eye with a radius of 9 mm and a height of 4.2 mm, enabling the covering of the target surface of a 1-inch flat image sensor. Under the same air pressure conditions, the tensile deformation of the polydimethylsiloxane (PDMS, Dow Chemical, China) membrane [ 50 , 51 , 52 ] and the diameter are approximately linear. In order to express the amount of deformation more intuitively, it can be drawn as a line graph, as in Figure 2 a.…”

Section: Methodsmentioning

confidence: 99%

A Meniscus Multifocusing Compound Eye Camera Based on Negative Pressure Forming Technology

Liu

Dong

et al. 2023

Micromachines

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To meet the challenge of preparing a high-resolution compound eye, this paper proposes a multi-focal-length meniscus compound eye based on MEMS negative pressure molding technology. The aperture is increased, a large field of view angle of 101.14° is obtained, and the ommatidia radius of each stage is gradually increased from 250 μm to 440 μm. A meniscus structure is used to improve the imaging quality of the marginal compound eye so that its resolution can reach 36.00 lp/mm. The prepared microlenses have a uniform shape and a smooth surface, and both panoramic image stitching and moving object tracking are achieved. This technology has great potential for application in many fields, including automatic driving, machine vision, and medical endoscopy.

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Section: Methodsmentioning

confidence: 99%

A Meniscus Multifocusing Compound Eye Camera Based on Negative Pressure Forming Technology

Liu

Dong

et al. 2023

Micromachines

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“…The vector height f0 and the radius of spherical curvature R0 at the main optical axis of the lens can be calculated from the cardinal distance H and the lens aperture value D. The off-axis trajectory parameters of the spherical unit lens can be reduced to the structural parameters at the main optical axis. The algorithm is shown in Equation (2).…”

Section: Off-axis Trajectory Modeling and Geometric Analysismentioning

confidence: 99%

“…The lenslet array is an important precision optical device that is widely used in high precision fields of civil and defense such as projection display, uniform illumination, detection, and guidance [1][2][3][4][5]. With the development of advanced processing technology and the continuous widening and deepening of the application field of the lenslet array, new requirements have been put forward for the inspection technology and methods of high precision lenslet array devices.…”

Section: Introductionmentioning

confidence: 99%

An Off-Axis Measuring Method of Structural Parameters for Lenslet Array

Zhang

Guo

et al. 2022

Electronics

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Aiming at the problem that the vertex detection method is difficult to deal with the high-efficiency detection of the large-scale spherical lenslet array, a contact off-axis measuring method is proposed and the measurement accuracy and detection efficiency are verified by experiments. Firstly, by analyzing the 3D model of the relationship between a spherical lens and probe of profilometer, the mathematical model of probe trajectory arc is established based on the off-axis trajectory characteristics of the spherical lenslet array. Then, the error mechanism under the off-axis condition is analyzed, and a mathematical algorithm is proposed to restore the structural parameters at the main optical axis of the lens by using the process design value of the unit lens aperture. Finally, a comparative experiment is carried out between the off-axis detection method and vertex detection method. The experimental results demonstrate that: Compared with the coaxial detection method, the relative errors of the measured lens curvature radius R0 and the lens vector height f0 under the off-axis detection method are 1.71% and 1.95%, respectively. Under the sampling measurement scale, the detection efficiency of the off-axis detection method is 41 times higher than that of vertex detection method.

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“…Negative pressure forming and replication transfer technology has been shown to be an efficient and accurate compound eye lens preparation technology [ 43 ]. Negative pressure forming and replication transfer technology can transfer microlens arrays into curved surfaces.…”

Section: Introductionmentioning

confidence: 99%

Double-Glued Multi-Focal Bionic Compound Eye Camera

et al. 2023

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Compound eye cameras are a vital component of bionics. Compound eye lenses are currently used in light field cameras, monitoring imaging, medical endoscopes, and other fields. However, the resolution of the compound eye lens is still low at the moment, which has an impact on the application scene. Photolithography and negative pressure molding were used to create a double-glued multi-focal bionic compound eye camera in this study. The compound eye camera has 83 microlenses, with ommatidium diameters ranging from 400 μm to 660 μm, and a 92.3 degree field-of-view angle. The double-gluing structure significantly improves the optical performance of the compound eye lens, and the spatial resolution of the ommatidium is 57.00 lp mm−1. Additionally, the measurement of speed is investigated. This double-glue compound eye camera has numerous potential applications in the military, machine vision, and other fields.

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Design and Integration of the Single-Lens Curved Multi-Focusing Compound Eye Camera

Cited by 7 publications

References 27 publications

A Meniscus Multifocusing Compound Eye Camera Based on Negative Pressure Forming Technology

A Meniscus Multifocusing Compound Eye Camera Based on Negative Pressure Forming Technology

An Off-Axis Measuring Method of Structural Parameters for Lenslet Array

Double-Glued Multi-Focal Bionic Compound Eye Camera

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