Effect of oil on an electrowetting lenticular lens and related optical characteristics

Abstract

While there are many ways to realize autostereoscopic 2D/3D switchable displays, the electrowetting lenticular lens is superior due to the high optical efficiency and short response time. In this paper, we propose a more stable electrowetting lenticular lens by controlling the quantity of oil. With a large amount of oil, the oil layer was broken and the lenticular lens was damaged at relatively low voltage. Therefore, controlling the amount of oil is crucial to obtain the required dioptric power with stability. We proposed a new structure to evenly adjust the volume of oil and the dioptric power was measured by varying the volume of oil. Furthermore, the optical characteristics were finally analyzed in the electrowetting lenticular lens array with a proper amount of oil.

Non-aqueous organic solution based on a large-aperture spherical electrowetting liquid lens with a wide tunable focal length range

“…The water system is an aqueous electrolyte solution with water as the solvent. [37][38][39][40][41][42][43][44][45][46] The mixed system is a compound of water and a non-aqueous solvent, which shows certain non-aqueous properties, and most of the dissolved solutes are common metal cation electrolytes. 33,36,47 The non-aqueous system is completely a compound of a nonaqueous organic solvent, and the solute usually contains some special organic electrolytes.…”

“…48,49 At present, almost all the conductive liquids used in electrowetting liquid lenses contain water, and most of them are aqueous solutions. [36][37][38][39][40][41][42][43][44][45][46] A few studies use other polar solutions, such as ethylene glycol, propylene glycol, propylene carbonate, etc. Sometimes some electrolytes are added to improve the conductivity of the conductive liquid.…”

“…When the pure substance cannot meet the requirements, researchers use alkane mixed with other substances as an insulating liquid. [44][45][46] For most conductive aqueous solutions, it is easy to form two clear immiscible phases using optical oil or a mixture of n-alkanes. But for non-aqueous conductive liquids, optical oil or a combination of n-alkanes may be mixed with conductive liquids.…”

3-D image Crosstalk Reduction by Controlling the Width of the Electrode in a Liquid Lenticular Lens

“…On the other hand, if the volume of oil is large, the liquid lenticular lens fails to maintain its convex shape and the oil drop is formed. The oil drop moves up and down along the horizontal direction of the lenticular lens [17]. Therefore, the amount of oil is crucial factor in an electrowetting liquid lenticular lens for stable operation and it should be adjusted properly.…”

Tunable Liquid Lenses: Emerging Technologies and Future Perspectives

“…In addition to the spherical lens, liquid lenticular lens arrays based on electrowetting have been proposed for 3D display. A kind of electrowetting liquid lenticular lens array was produced by thin polycarbonate or polymethylmethacrylate chamber, [91][92][93] as shown in Figure 12d. Metal, dielectric layer, and hydrophobic layer were deposited in the chamber.…”