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:
Jan. 28, 2020
Filed:
Mar. 08, 2019
Applicant:
K Laser Technology, Inc., Hsinchu, TW;
Inventor:
Wai-Hon Lee, Los Altos, CA (US);
Assignee:
K Laser Technology, Inc., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03H 1/08 (2006.01); G03H 1/22 (2006.01); G02B 27/09 (2006.01); G03H 1/02 (2006.01);
U.S. Cl.
CPC ...
G03H 1/08 (2013.01); G02B 27/0955 (2013.01); G02B 27/0977 (2013.01); G03H 1/2202 (2013.01); G03H 2001/0216 (2013.01);
Abstract
In an embodiment, an off-axis hologram is provided. The off-axis hologram creates two, conjugate images which are on either side (off-axis) of the 0-order beam. A Multiple Beam Grating (MBG) is used to both duplicate the conjugate images and to redirect the images along the axis. The 0-order beam is blocked before or at the MBG. The MBG projects the images onto a 3D surface, such as a person's face.