Liquid lens module with wide field-of-view and variable focal length

Sang Won Seo; Seungoh Han; Jun Ho Seo; Woo Bum Choi; Man Young Sung

doi:10.3365/eml.2010.12.141

Liquid lens module with wide field-of-view and variable focal length

Sang Won Seo, Seungoh Han, Jun Ho Seo, Woo Bum Choi, Man Young Sung

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

A novel wide angle and variable-focus imaging module based on a miniaturized liquid lens is presented for capsule endoscopy applications. For these applications, it is desirable to have features such as a wide field of view (FOV), variable focus, small size, and low power consumption, thereby taking full advantage of the miniaturized liquid lens. The proposed imaging module has three aspheric plastic lenses for a wide FOV, and one liquid lens that can change the focal length by as much as 24.5 cm with a bias voltage difference of 23 V_rms for variable focusing. The assembled lens module has an overall length of 8.4 mm and a FOV of 120.5°. The realized imaging module including the proposed lenses is small enough to be inserted into a capsule endoscope, and it is expected to improve the diagnostic capability of capsule endoscopes.

Original language	English
Pages (from-to)	141-144
Number of pages	4
Journal	Electronic Materials Letters
Volume	6
Issue number	4
DOIs	https://doi.org/10.3365/eml.2010.12.141
Publication status	Published - 2010 Dec

Keywords

Capsule endoscope
Liquid lens
MEMS
Variable focus
Wide angle

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials

Access to Document

10.3365/eml.2010.12.141

Cite this

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title = "Liquid lens module with wide field-of-view and variable focal length",

abstract = "A novel wide angle and variable-focus imaging module based on a miniaturized liquid lens is presented for capsule endoscopy applications. For these applications, it is desirable to have features such as a wide field of view (FOV), variable focus, small size, and low power consumption, thereby taking full advantage of the miniaturized liquid lens. The proposed imaging module has three aspheric plastic lenses for a wide FOV, and one liquid lens that can change the focal length by as much as 24.5 cm with a bias voltage difference of 23 Vrms for variable focusing. The assembled lens module has an overall length of 8.4 mm and a FOV of 120.5°. The realized imaging module including the proposed lenses is small enough to be inserted into a capsule endoscope, and it is expected to improve the diagnostic capability of capsule endoscopes.",

keywords = "Capsule endoscope, Liquid lens, MEMS, Variable focus, Wide angle",

author = "Seo, {Sang Won} and Seungoh Han and Seo, {Jun Ho} and Choi, {Woo Bum} and Sung, {Man Young}",

year = "2010",

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AU - Seo, Sang Won

AU - Han, Seungoh

AU - Seo, Jun Ho

AU - Choi, Woo Bum

AU - Sung, Man Young

PY - 2010/12

Y1 - 2010/12

N2 - A novel wide angle and variable-focus imaging module based on a miniaturized liquid lens is presented for capsule endoscopy applications. For these applications, it is desirable to have features such as a wide field of view (FOV), variable focus, small size, and low power consumption, thereby taking full advantage of the miniaturized liquid lens. The proposed imaging module has three aspheric plastic lenses for a wide FOV, and one liquid lens that can change the focal length by as much as 24.5 cm with a bias voltage difference of 23 Vrms for variable focusing. The assembled lens module has an overall length of 8.4 mm and a FOV of 120.5°. The realized imaging module including the proposed lenses is small enough to be inserted into a capsule endoscope, and it is expected to improve the diagnostic capability of capsule endoscopes.

AB - A novel wide angle and variable-focus imaging module based on a miniaturized liquid lens is presented for capsule endoscopy applications. For these applications, it is desirable to have features such as a wide field of view (FOV), variable focus, small size, and low power consumption, thereby taking full advantage of the miniaturized liquid lens. The proposed imaging module has three aspheric plastic lenses for a wide FOV, and one liquid lens that can change the focal length by as much as 24.5 cm with a bias voltage difference of 23 Vrms for variable focusing. The assembled lens module has an overall length of 8.4 mm and a FOV of 120.5°. The realized imaging module including the proposed lenses is small enough to be inserted into a capsule endoscope, and it is expected to improve the diagnostic capability of capsule endoscopes.

KW - Capsule endoscope

KW - Liquid lens

KW - MEMS

KW - Variable focus

KW - Wide angle

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Liquid lens module with wide field-of-view and variable focal length

Abstract

Keywords

ASJC Scopus subject areas

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