Magneto-optical holographic 3D display with wide viewing angle using microlens array and digital mirror device. (1st March 2023)

• Record Type: Journal Article
• Authors: Yamagishi, Sena; Ito, Yasutoshi; Yamamoto, Yuta; Kimura, Yota; Takagi, Hiroyuki; Mito, Shinichiro; Horimai, Hideyoshi; Inoue, Mitsuteru; Uchida, Hironaga
• Is Part Of: Japanese journal of applied physics. Volume 62:Number SB(2023)
• Publication Date: 2023-03-01
• Subjects: three-dimensional display -- magnetic holography -- magneto-optical effect -- thermo-magnetic recording; Physics -- Periodicals; 621.05
• DOI: 10.35848/1347-4065/aca7ce
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: We developed a three-dimensional (3D) holographic display using the magneto-optical effect. The system uses a microlens array to reduce the area size of light reflected from pixels of a digital mirror device to approximately 1 μ m and write in parallel to a magnetic recording medium as hologram data. This method makes it possible to write over a wide area even with a piezo stage that has high resolution but a narrow range of movement. The holograms, written at a pixel pitch of 1.1 um, enabled the reconstruction of 3D images with a wide viewing angle of 26.7 deg. By avoiding abrupt directional changes of the piezo stage, the image quality was improved by eliminating line defects in the written holograms; image distortion was reduced by setting the incident angle of the reference light in the program of a computer-generated hologram to match the model and the reconstructing optical system. Image distortion was reduced by improving the program of the computer-generated hologram.