Construction of white-light holographic screens

Abstract

In this paper we describe one setup employed for the recording of two types of holographic screens that can be used in white-light applications. We show how to obtain holographic screens with areas up to 1370 cm 2 and diffraction efficiency of 17%. We analyze the holographic screens in their relevant aspects as to focal lengths, theoretical approach, sizes and diffraction efficiencies specifying when each type is appropriate for particular applications.

Vertically dispersive holographic screens and autostereoscopic displays in 3D medical imaging

“…The angle increase from 45 [5] to 53 degrees did not create significant increase to the wavelength dependence of the diffraction efficiency.…”

“…Although the increase of the diffraction efficiency from about 3 [5] to a maximum of 7.2% of the VDHS's, there is an important variation in the efficiencies in regions outside of the center of the screen, this lead us to search higher quality optical elements to perform a uniform illumination of the plate. The furthest regions from the center have 3% of efficiency.…”

“…The vertically dispersive holographic screen (VDHS) is the screen in which the diffractive dispersion occurs vertically [5]. We present below the method to obtain VDHS's in holographic plates and the differences in the proceedings that allowed us to obtain a wider field of view and more appropriate focal length than in the previous work [5].…”

“…The system does not require the use of glasses, but offers limited field of view and low light intensity due to a process of double diffraction required in the codification-decodification of depth [4]. Different types of holographic screens were designed considering specific applications such as the Holo-television [5] or more recently the 3D shadowgram system [6]. The vertically dispersive holographic screen (VDHS) [5] has the characteristic of directionality into the viewer's eyes, which makes possible its use as a Glasses-free 3D viewing system.…”

“…Different types of holographic screens were designed considering specific applications such as the Holo-television [5] or more recently the 3D shadowgram system [6]. The vertically dispersive holographic screen (VDHS) [5] has the characteristic of directionality into the viewer's eyes, which makes possible its use as a Glasses-free 3D viewing system.…”