Electrowetting Lenticular Lens for a Multi-View Autostereoscopic 3D Display

Kim, Cheoljoong; Kim, Junoh; Shin, Dooseub; Lee, Jun‐Sik; Koo, Gyohyun; Won, Yong Hyub

doi:10.1109/lpt.2016.2597868

Cited by 30 publications

(12 citation statements)

References 19 publications

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“…First, the polymer lenticular lens chamber is fabricated through pitch selection, KOH wet etching of silicon, nickel electro-plating, and a hot embossing process 9 . The hot embossing process is shown in Fig.…”

Section: Fabrication Process Of a Biconvex Structure Electrowetting Lmentioning

confidence: 99%

“…To develop an autostereoscopic display 1 – 4 capable of 2D/3D conversion, research on the fabrication of a tunable lenticular lens using a liquid crystal 5 , 6 , a polymer membrane 7 , 8 , and a liquid lens 9 , 10 has been carried out in recent years. Among these approaches, a liquid lenticular lens using an electrowetting phenomenon 11 , 12 offers high optical transmittance and fast driving speed compared to the other methods.…”

Section: Introductionmentioning

confidence: 99%

“…According to research on the planoconvex structure electrowetting lenticular lens (P-EWLL) first reported in the literature, the dioptric power of the lenticular lens was only 145 D, and as such multi-view images are not smoothly separated from each point of view, and the ratio of crosstalk was also high 9 . In order to improve the significantly low dioptric power of the P-EWLL, research was conducted to change the material of the polymer chamber from poly methyl methacrylate (PMMA) to poly carbonate (PC), and to separate the electrode at the bottom of the chamber 10 .…”

Section: Introductionmentioning

confidence: 99%

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Novel biconvex structure electrowetting liquid lenticular lens for 2D/3D convertible display

Sim

Kim

et al. 2018

Sci Rep

Self Cite

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Recently, a planoconvex structure electrowetting lenticular lens capable of 2D/3D conversion through a varifocal property by an electrowetting phenomenon has been developed. However, even though it has a similar planoconvex structure to that of a commercial solid lenticular lens, comparable 3D performance could not be realized because the refractive index difference between nonconductive liquid and conductive liquid was not large. Therefore, the goal of the present study is to obtain better 3D performance compared to the conventional planoconvex structure by introducing a novel biconvex structure using ETPTA. The newly developed biconvex structure electrowetting lenticular lens showed greatly improved characteristics compared to the planoconvex structure: dioptric power (171.69D → 1,982.56D), viewing angle (26degrees → 46degrees), and crosstalk ratio (27.27% → 16.18%). Thanks to these improvements, a fine 3D image and a natural motion parallax could be observed with the biconvex structure electrowetting lenticular lens. In addition, the novel biconvex structure electrowetting lenticular lens was designed to achieve a plane lens state with a no voltage applied condition, and as such it could show a clean 2D image at 0 V. In conclusion, a novel biconvex structure electrowetting lenticular lens showed 2D/3D switchable operation as well as excellent 3D performance compared to a solid lenticular lens.

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Section: Fabrication Process Of a Biconvex Structure Electrowetting Lmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Novel biconvex structure electrowetting liquid lenticular lens for 2D/3D convertible display

Sim

Kim

et al. 2018

Sci Rep

Self Cite

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“…The problem that a lenslet cannot adjust its focal length to image the corresponding pixel in different positions arises here, because it is hard to detect the 3D position before the 3D point is formed. While there are lenticular sheets with adjustable lenslets [19][20][21][22], the focal length of the lenslets is adjusted for extending the viewing distance of the AD, not for imaging the corresponding pixels. As we know, lenslets in the lenticular sheet are used for collimating and redirecting the light beams emitted from the pixels on the AD, not for imaging the pixels at the expected 3D point positions.…”

Section: Introductionmentioning

confidence: 99%

Study on the Reduction Effect of Stereo Depth Caused by Lens Aberration in Lenticular-Based Autostereoscopic Displays

et al. 2019

Applied Sciences

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Autostereoscopic displays employing lenticular sheets have broad applications due to the high transmittance of lenticular sheet. However, due to the restriction of lens array design and processing, the imperfect image of lenses can reduce the quality experience of autostereoscopic displays. Stereo depth is one of the qualities of experience parameters, which relates to the three-dimensional effect. Therefore, to quantize the reduction effect of stereo depth caused by lens aberration is of great value. In this paper, we implement a binocular model of an autostereoscopic display system with lens array to analyze this effect, which is different from the previously used monocular model. Two receivers in the positions of viewer’s eyes are set on the viewing plane, and a similar factor is defined to evaluate the difference of light spots perceived by the two receivers. When the similar factor exceeds a certain value, the two spots cannot be fused in the brain, thus restricting the perceived stereo depth. Both in simulation and experiment, a sudden decrease of the similar factor is observed when the viewing angle exceeds 16°. In the subjective experiment, all the sixteen viewers feel a sudden decrease of stereo depth when the viewing angle exceeds 16°, which further verifies the validity of the model. The model and the method are significant for improving the viewing experience of autostereoscopic displays and providing a guidance on autostereoscopic display system designing.

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“…Some approaches endeavor to improve the performance and image quality of 3D imaging display, such as the experimental demonstration to perform an extended depth of field (DOF) in integral 3D imaging using a single large aperture liquid crystal lens or applying the gradient amplitude modulating method for the DOF enhancement . With this intention, there is great potential to explore this method to increase the resolution of a 3D image reconstruction, the use of normalized computational technique, optical modulation method, photon counting 3D imaging technique, and the optical coherence tomography technique for structural investigation have been acquiring increasing relevance to medical and biological applications. Furthermore, these imaging techniques have been primarily associated with the holographic display, which is a type of display that utilizes light diffraction to create a virtual 3D image of an object, has been rapidly popularized in recent years.…”

Section: Introductionmentioning

confidence: 99%

A microring conjugate mirror design and simulation for naked‐eye 3D imaging application

Pornsuwancharoen

Youplao

Tamee

et al. 2018

Micro & Optical Tech Letters

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We present a design of micro‐conjugate mirror using a nonlinear microring resonator, which is made of GaAsInP/P, is rapidly achieving widespread option in several three‐dimensional (3D) imaging applications. By exploiting the conjugate mirror properties, the 3D light probes can be formed by the whispering gallery modes (WGM) in which the WGM probe is also available within a nonlinear microring resonator. It is important to understand, these light probes use the similar functional principle to provide structured light through the object, just as the reference beams to light up and develop a hologram using the holographic method. The interference of 2 beams constructs the 3D image which can be seen by the naked‐eye while providing the 3D perception. The simulation results obtained from the transmission of 3D imaging are processed using MATLAB and OptiFDTD are compared and analyzed. These convincing theoretical results suggest that the proposed method can be used in practice to realize the naked‐eye 3D imaging with convincing visual perception and efficient transmission while providing the ultimate mode of convenience for viewers.

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Electrowetting Lenticular Lens for a Multi-View Autostereoscopic 3D Display

Cited by 30 publications

References 19 publications

Novel biconvex structure electrowetting liquid lenticular lens for 2D/3D convertible display

Novel biconvex structure electrowetting liquid lenticular lens for 2D/3D convertible display

Study on the Reduction Effect of Stereo Depth Caused by Lens Aberration in Lenticular-Based Autostereoscopic Displays

A microring conjugate mirror design and simulation for naked‐eye 3D imaging application

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