Dual‐lenticular‐lens‐based 2‐D/3‐D convertible autostereoscopic display

Abstract

A 2-D/3-D convertible display using two lenticular lenses has been developed. It shows 2-D pictures in full resolution and 3-D autostereoscopic pictures in half resolution by moving one lens relative to the other. The lens assembly consists of thin metal frames, two lenticular lenses, and two shape-memory-alloy (SMA) wires used as actuators. While this assembly is applicable to flat-panel displays of any kind, its simple structure and low power consumption make it best suited to mobile terminals, such as PDAs and mobile phones. Here, we describe its structure and present evaluation results.

Liquid crystal-based lenticular lens array with laterally shifting capability of the focusing effect for autostereoscopic displays

“…Among several types of lenticular lenses, the most promising one is based on a liquid crystal (LC) owing to the simplicity in fabrication, the compactness, and the tuning capability at low voltages resulting from the large electro-optical anisotropy [11,12]. Since conventional lenticular lens arrays based on the LC yield the tunable focusing effect along the direction perpendicular to the substrate, i.e., out-of-plane of the substrate [13][14][15][16], the viewing zones for focusing and defocusing remain unchanged irrespective of an applied voltage [17][18][19][20][21][22]. For more sophisticated applications, however, it is desirable to have another degree of freedom allowing the lateral shift of the focusing effect of the lenticular lens.…”

A common approach to characterizing autostereoscopic and polarization‐based 3‐D displays

“…2 More sophisticated techniques, such as goniometers or Fourier optics instruments, have also been used, but generally in a quite restricted way analyzing only one single cross section in the observer space. [3][4][5][6] From this limited information, different parameters have been defined, such as 3-D cross-talk, optimum viewing distance, viewing freedom that gives a first evaluation of the performances of a twin-view 3-D display. 5 The situation of multiview displays is much complex even if the measurement procedures are very similar.…”

11.2: Distinguished Paper: VCMaster3D: A New Fourier Optics Viewing Angle Instrument for Characterization of Autostereoscopic 3D Displays.

“…Up to now, quite simple optical characterizations can be found in the literature where a single detector moves horizontally at the optimal viewing distance [1]. More sophisticated techniques like goniometers or Fourier optics instruments have also been used but generally in a quite restricted way analyzing only one single cross section in the observer space [2][3][4][5]. From these limited information, different parameters have been defined such as 3D crosstalk, optimum viewing distance, viewing freedom that give a first evaluation of the performances of a twin view 3D display [4].…”