Proposal of head-mounted projector for field of view enlargement in electro-holography

Natsu Kikuchi; Yuji Sakamoto

doi:10.1117/12.3002297

13 March 2024 Proposal of head-mounted projector for field of view enlargement in electro-holography

Natsu Kikuchi, Yuji Sakamoto

Proceedings Volume 12910, Practical Holography XXXVIII: Displays, Materials, and Applications; 129100L (2024) https://doi.org/10.1117/12.3002297
Event: SPIE OPTO, 2024, San Francisco, California, United States

Conference Poster

Abstract

Electro-holography is an ideal three-dimensional image display technology, but there is a problem with the small field of view. Various methods for enlarging the field of view have been proposed, including a method that involves using a head-mounted display (HMD). While the HMD can enlarge the field of view, it narrows the view, causing a sense of occlusion. Therefore, we propose a method of enlarging the field of view that involves using an optical system attached to the head and used as a projector to widen the view. With the proposed method, a reconstructed image is projected from the head-mounted optical system to a concave mirror placed in front of the head. The light of the reconstructed image, enlarged with the concave mirror, is then reflected almost in the direction of incidence. We can also observe this light. This method does not require the eyes to be covered, as with an HMD, so the view is widened more. Distortion of the reconstructed image, which is a characteristic of concave mirrors, can also be suppressed by reflecting light almost directly in front of the viewer. Furthermore, because this system is used with a fixed viewpoint, like an HMD, we can observe the reconstructed image in a narrow viewing zone. Experiments showed that the field of view is enlarged, demonstrating the effectiveness of the proposed method.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Natsu Kikuchi and Yuji Sakamoto "Proposal of head-mounted projector for field of view enlargement in electro-holography", Proc. SPIE 12910, Practical Holography XXXVIII: Displays, Materials, and Applications, 129100L (13 March 2024); https://doi.org/10.1117/12.3002297

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