Zoom camera based on liquid lenses

This research proposes a newly developed method to high zoom lens for mobile phone use, which the overall length is restricted in mobile phone size acceptable. Generally speaking, the optical design with liquid lens might be more complicated in optimization than traditional optics; not only because aspherical coefficient in liquid lens element is difficult to be defined and measured, but also because efficient optics layout needs more efforts to study in the near future. The paper mainly utilizes liquid lens in order to short total length; two liquid lens elements must be included. Besides consider total length, Lateral aberration also is very important.Lateral aberration will play a significant role in the Modulation Transfer function (MTF), so, the optical design will be able to arise very big, and that the many kinds of chromatics aberration with two groups of liquid lens. Using Digital Signal Processing technology principal factor why this also is.

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“…1) [3] . The advantage of the zoom system with liquid lens is the overall length shorter than that of the traditional (i.e., lens with cams).…”

Section: Zoom Lens Design Based On Liquid Lens and Digital Signal Promentioning

confidence: 98%

Optical design method for high zoom ratio lens with liquid lens and digital signal processing

Fang

Tsai

et al. 2007

SPIE Proceedings

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“…where the gradients 2 4 / dm dm and 3 4 / dm dm also appear as non-zero with their signs unchanged as 3 e , 4 e , and 3 φ are non-zero system parameters in the zooming process, which shows that 2 4 ( ) m f m = employed so that the initial points of variables in the system are selected for higher zoom ratio as well as image shift compensation.…”

Section: Derivatives With Respect To Magnificationmentioning

confidence: 99%

“…Usage of focal-length-variable opto-electronic components, such as deformable mirrors, liquid lenses, etc., in zoom lens designs takes advantage of stabilized zooming, acquiring much higher zoom speeds with less noise than the cam system in traditional zoom optics [1][2][3][4][5]. 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.…”

Section: Introductionmentioning

confidence: 99%

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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“…6,7 Recently, optical zoom systems without moving elements have been proposed. [8][9][10] Kuiper et al designed a zoom camera which is based on two-focus liquid lenses and three plastic lenses. 8 Seidl et al developed an all-reflective, unobscured, optical-power zoom objective with two deformable mirrors (DMs) and two static aspheric mirrors.…”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10] Kuiper et al designed a zoom camera which is based on two-focus liquid lenses and three plastic lenses. 8 Seidl et al developed an all-reflective, unobscured, optical-power zoom objective with two deformable mirrors (DMs) and two static aspheric mirrors. 9 Especially, Lu et al described a polymorphic optical zoom system with two deformable mirrors; moreover, it is experimentally proved that such a system is capable of automated fine focus control and adaptive aberration compensation.…”

Section: Introductionmentioning

confidence: 99%

Active optical system for any field angle zoom

2011

Opt. Eng

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We have theoretically proposed a new type of active optical zoom system. It can change the magnification of an imaging system at any field angle, namely, it can change the effective focal length at a limited region of interest and simultaneously maintain high resolution. It is comprised of two static aspheric mirrors and two deformable mirrors; furthermore, by changing the curvature of mirrors the focal length can be adjusted from − 399 to − 558.6 mm. The system reduces the bandwidth of data transmission and may find potential applications in high speed photography. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).Subject terms: any field angle; deformable mirror; active zoom system; optical systems design.Paper 110523RR

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Zoom camera based on liquid lenses

Cited by 24 publications

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Optical design method for high zoom ratio lens with liquid lens and digital signal processing

Optical design method for high zoom ratio lens with liquid lens and digital signal processing

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

Active optical system for any field angle zoom

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