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Lensless On-chip Imaging of Cells Provides a New Tool for High-throughput Cell-Biology and Medical Diagnostics

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Published on: December 14, 2009

Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging.

Kisoo Kim^1,2, Kyung-Won Jang^1,2, Jae-Kwan Ryu³

¹1Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141 Republic of Korea.

Light, Science & Applications

|March 7, 2020

Summary

Researchers developed an ultrathin insect-eye-inspired camera for high-contrast, super-resolution imaging. This novel micro-optical element camera offers improved modulation transfer function for advanced applications.

Keywords:

Imaging and sensing Optoelectronic devices and components

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Area of Science:

Biomimetic engineering
Optoelectronics
Microfabrication

Background:

Insect compound eyes offer a biological model for advanced imaging systems.
Miniaturized imaging systems require high contrast and resolution.

Purpose of the Study:

To develop an ultrathin arrayed camera inspired by insect compound eyes.
To achieve high-contrast and super-resolution imaging using micro-optical elements (MOEs).

Main Methods:

Fabrication of MOEs, including inverted microlenses and multilayered pinhole arrays, using photolithography and thermal reflow.
Integration of MOEs onto an image sensor to create an ultrathin camera.
Characterization of camera performance, including field-of-view and modulation transfer function (MTF).

Main Results:

The ultrathin camera has a total track length of 740 μm and a field-of-view of 73°.
Multilayered pinholes in MOEs effectively eliminate optical crosstalk, enhancing image contrast.
Integral imaging reconstruction increased the MTF by approximately 1.57 times compared to single-channel imaging.

Conclusions:

The developed ultrathin arrayed camera, inspired by insect eyes, achieves high-contrast and super-resolution imaging.
This technology presents a novel and practical approach for mobile, surveillance, and medical imaging applications.