The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2025
Filed:
Oct. 04, 2024
Pacific Light & Hologram, Inc., San Gabriel, CA (US);
Jonathan Seamus Blackley, South Pasadena, CA (US);
Richard Bahr, Atherton, CA (US);
Watson Brent Boyett, Los Angeles, CA (US);
Sylvain Marcel Colin, Ventura, CA (US);
Robin James Green, Duvall, WA (US);
Isaac Serrano Guasch, Barcelona, ES;
Stephen John Hart, San Juan Capistrano, CA (US);
Robert Alan Hess, Mesa, AZ (US);
Margaret H. Hsu, Pasadena, CA (US);
Christoph Von Jutrzenka, Santa Barbara, CA (US);
Deagyu Kim, Pasadena, CA (US);
Mark Anthony Loya, Temple City, CA (US);
Kelly Swan Macneill, Seattle, WA (US);
Benjamin Francis Neil, South Pasadena, CA (US);
Kamran Qaderi, San Gabriel, CA (US);
Tina Qin, Rosemead, CA (US);
Jesus Manuel Caridad Ramirez, Altadena, CA (US);
Jayakrishna Sashidharan, San Gabriel, CA (US);
Asher Zelig Sefami, Altadena, CA (US);
Jeff Smith, Las Vegas, NV (US);
Robert David Srinivasiah, Mountain View, CA (US);
Sameer Sudhir Walavalkar, Glendale, CA (US);
Joshua D. Wiensch, Altadena, CA (US);
Daniel Dereck Williamson, Brighton, GB;
Pacific Light & Hologram, Inc., San Gabriel, CA (US);
Abstract
Methods, apparatus, devices, subsystems, and systems for holographically displaying three-dimensional objects are provided. In one aspect, an optical device includes: an optical guiding device configured to guide light to propagate along a first direction within the optical guiding device; an in-coupling diffractive structure configured to diffract the light to propagate in the optical guiding device; and out-coupling diffractive structures configured to diffract at least part of the light out of the optical guiding device along a second direction different from the first direction. The out-coupling diffractive structures are configured to have gradually increased diffraction efficiencies for the light along the first direction away from the in-coupling diffractive structure. A first diffraction efficiency of the in-coupling diffractive structure is no smaller than a first threshold, and a second diffraction efficiency of each out-coupling diffractive structure is no greater than a second threshold that is no greater than the first threshold.