Optical implementation of micro-zoom arrays for parallel focusing in integral imaging

Abstract

We report 3D integral imaging with an electronically tunable-focal-length lens for improved depth of field. The micro-zoom arrays are generated and implemented based on the concept of parallel apodization. To the best of our knowledge, this is the first report of parallel dynamic focusing in integral imaging based on the use of micro-zoom arrays.

Enhanced field-of-view integral imaging display using multi-Köhler illumination

“…This overlapping can be solved by placing a set of physical barriers to divide the sensor in a set of separate elemental cells, as in [12], where a dynamic barrier array is also used to increase the range of perspective of the 3D image. Since this method requires complex manufacturing techniques, several methods have been proposed to implement the barriers optically; for example, by using a set of gradient-index lens-array [13], by means of a telecentric relay system (TRES) [14,15] or by using switching polarizing masks [16]. In the viewing stage a similar situation happens when the observer looks at the MLA far from the optical axis.…”

Accelerated Generation Algorithm for an Elemental Image Array Using Depth Information in Computational Integral Imaging

“…Integral imaging, also known as integral photography, was first proposed by Lippmann [1] in 1908. It is regarded as one of the most attractive approaches because of advantages such as full-color and real-time display of a 3D image within a certain continuous viewing angle without any supplementary devices [2][3][4][5][6][7][8].…”

“…For the reconstruction process, there are also two types of reconstruction methods, optical integral imaging reconstruction (OIIR) [2][3][4][5] and computational integral imaging reconstruction (CIIR) [6][7][8][9][10]. In OIIR, images of 3D objects are optically reconstructed from the picked-up elemental images by the combined use of a display panel and a lenslet array.…”

Simplified Integral Imaging Pickup Method for Real Objects Using a Depth Camera

“…Some other 3D technologies have been developed, for example stereoscopy [1], autostereoscopy [2], holography [3][4]. Amongst these techniques, integral imaging is an attractive autostereoscopic 3D display technology using a lens array [5][6][7][8][9][10][11][12][13][14][15][16][17][18]. An integral imaging system consists of a pickup and display sections.…”

“…Each elemental lens forms a corresponding image of the object, and the elemental images are captured by a charge-coupled device (CCD) camera. However, when we obtain elemental images from real objects in a conventional optical pickup method, there are some disadvantages in using a lens array [5][6][7][8][9][10][11][12][13][14][15][16]. The setup of a lens array and a CCD camera should be placed exactly, and it should prevent unnecessary beams to come into the lens array.…”