6533b7d8fe1ef96bd126afd7
RESEARCH PRODUCT
Long working range light field microscope with fast scanning multifocal liquid crystal microlens array
Ping-yen ChouZong QinBahram JavidiPo-yuan HsiehChao-yu ChuCheng-ting HuangHsiu-an LinYi-pai HuangChun-ho ChenManuel Martínez Corralsubject
Point spread functionMicrolensMicroscopeMaterials sciencebusiness.industry02 engineering and technologyÒptica021001 nanoscience & nanotechnology01 natural sciencesAtomic and Molecular Physics and OpticsNumerical aperturelaw.invention010309 opticsMicroscòpiaOpticslawLiquid crystal0103 physical sciencesFocal lengthDepth of field0210 nano-technologybusinessLight fielddescription
The light field microscope has the potential of recording the 3D information of biological specimens in real time with a conventional light source. To further extend the depth of field to broaden its applications, in this paper, we proposed a multifocal high-resistance liquid crystal microlens array instead of the fixed microlens array. The developed multifocal liquid crystal microlens array can provide high quality point spread function in multiple focal lengths. By adjusting the focal length of the liquid crystal microlens array sequentially, the total working range of the light field microscope can be much extended. Furthermore, in our proposed system, the intermediate image was placed in the virtual image space of the microlens array, where the condition of the lenslets numerical aperture was considerably smaller. Consequently, a thin-cell-gap liquid crystal microlens array with fast response time can be implemented for time-multiplexed scanning.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-01-01 |