Abstract
A new method for obtaining digital Fourier holograms, under spatially incoherent white-light illumination and in a single camera shot, is presented. Multiple projections of the 3-D scene are created in the image plane of a microlens array, and a digital camera acquires the entire projections in a single shot. Then, each projection is computer processed to yield a single point in a Fourier hologram. The new method, designated as integral holography, is proved for the general case and demonstrated experimentally for a simple case.
Highlights
Conventional holography involves the acquisition of an interference pattern created by interfering beams coming from a 3-D scene and a reference beam
We present a new method for obtaining digital holograms
This method employs a microlens array (MLA), a device that is usually used in the integral imaging field [5,6], in order to capture multiple projections of the 3-D scene by using a single camera shot, but still under spatially incoherent white-light illumination
Summary
Conventional holography involves the acquisition of an interference pattern created by interfering beams coming from a 3-D scene and a reference beam. In spite of the great advantages presented by the above described methods and their potential of making holography attractive for many practical applications, the 3-D scene recording process in these methods is still considered long and quite complicated This occurs because the camera has to be repositioned many times in order to obtain enough 3-D scene projections, required for the synthesis of a hologram with an acceptable resolution. We present a new method for obtaining digital holograms This method employs a microlens array (MLA), a device that is usually used in the integral imaging field [5,6], in order to capture multiple projections of the 3-D scene by using a single camera shot, but still under spatially incoherent white-light illumination. We designate the proposed method as integral holography (IH) and demonstrate it experimentally for a simple case
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