Miniature non-mechanical zoom camera using deformable MOEMS mirrors

Kaylor, Brant M.; Wilson, Christopher R.; Greenfield, Nathan; Roos, Peter A.; Seger, Eric M.; Moghimi, Mohammad J.; Dickensheets, David L.

doi:10.1117/12.909146

Cited by 9 publications

(5 citation statements)

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“…Miniaturized zoom lenses for small form-factor cameras (e.g. cell phones and surgical tools) is another potential application for reflective microlenses 33 34 35 . The Si-based fabrication technology for these FZP microlenses provides the potential for integration with electronic circuits on a single chip.…”

Section: Discussionmentioning

confidence: 99%

Micro-Fresnel-Zone-Plate Array on Flexible Substrate for Large Field-of-View and Focus Scanning

Moghimi

Fernandes

Kanhere

et al. 2015

Sci Rep

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Field of view and accommodative focus are two fundamental attributes of many imaging systems, ranging from human eyes to microscopes. Here, we present arrays of Fresnel zone plates fabricated on a flexible substrate, which allows for the adjustment of both the field of view and optical focus. Such zone plates function as compact and lightweight microlenses and are fabricated using silicon nanowires. Inspired by compound eyes in nature, these microlenses are designed to point along various angles in order to capture images, offering an exceptionally wide field of view. Moreover, by flexing the substrate, the lens position can be adjusted, thus achieving axial focus scanning. An array of microlenses on a flexible substrate was incorporated into an optical system to demonstrate high resolution imaging of objects located at different axial and angular positions. These silicon based microlenses could be integrated with electronics and have a wide range of potential applications, from medical imaging to surveillance.

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Section: Discussionmentioning

confidence: 99%

Micro-Fresnel-Zone-Plate Array on Flexible Substrate for Large Field-of-View and Focus Scanning

Moghimi

Fernandes

Kanhere

et al. 2015

Sci Rep

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“…We use two deformable mirrors as the focal-length-variable groups 2 4 ( , ) φ φ , with the optical power range of the deformable mirror being 0.04 1 mm − [7,8]. The values of the Gaussian parameters are listed in table 1 and table 2, in which the sign of 3 m in example 1 is fixed and varied in example 2 during zooming.…”

Section: Examples For a 2:1 Zoom Systemmentioning

confidence: 99%

“…The stabilized zoom system can be available for mobile devices, aerial vehicles, and deep-sea submersibles, could help reduce the load capacity of these instruments. Various authors have also investigated the construction of the zoom equation, the balance of the third-order aberration, and the relationship between the component parameters and the system structure [6][7][8][9][10][11]. However, there remain difficulties in the realization of high zoom ratios for stabilized zoom systems using optical power as a zoom variable.…”

Section: Introductionmentioning

confidence: 98%

Design method on the stabilized zoom lens design of focal-length-variable elements

Hao

Cheng

2013

SPIE Proceedings

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The theoretical method for analyzing the first-order optics of stabilized zoom lenses with two focal-length-variable elements is presented. The first and second derivatives and the Hessian matrix of the zoom equations with respect to the Gaussian parameters are determined to represent the sensitivity of the zoom ratio of the system to changes in the corresponding system variables. Four-group stabilized zoom lens designs with 2:1 and 5:1 zoom ratios are successfully investigated.

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“…Systems based on these mirrors can have variable optical power to adjust the plane of focus [1,2] and can achieve optical zoom [3,4]. The focus range of the mirror is proportional to the deflection of the membrane [1], which should be maximized.…”

Section: Introductionmentioning

confidence: 99%

Electrostatic-pneumatic membrane mirror with positive or negative variable optical power

2013

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A MEMS deformable mirror is described that uses a novel actuation scheme to increase the optical focus range. In this method electrostatic-pneumatic actuation is used to achieve a convex surface curvature of the mirror, while direct electrostatic actuation creates a concave surface. The fabricated device consists of two membranes made of the photoset epoxy SU-8. One membrane serves as the deformable mirror and the other one as the pneumatic actuator. The pneumatic membrane also provides a built-in valve for pressure equalization. The principle of operation, fabrication process and results are presented.

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Miniature non-mechanical zoom camera using deformable MOEMS mirrors

Cited by 9 publications

References 0 publications

Micro-Fresnel-Zone-Plate Array on Flexible Substrate for Large Field-of-View and Focus Scanning

Micro-Fresnel-Zone-Plate Array on Flexible Substrate for Large Field-of-View and Focus Scanning

Design method on the stabilized zoom lens design of focal-length-variable elements

Electrostatic-pneumatic membrane mirror with positive or negative variable optical power

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