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:
Jun. 23, 2026
Filed:
Jun. 15, 2023
Applicant:
Envisics Ltd, Milton Keynes, GB;
Inventors:
Edward Boardman, Milton Keynes, GB;
Timothy Smeeton, Milton Keynes, GB;
Ruisheng Lin, Milton Keynes, GB;
Assignee:
Envisics Ltd., Milton Keynes, GB;
Primary Examiner:
Int. Cl.
CPC ...
F21V 8/00 (2006.01); G02B 5/32 (2006.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01); G03H 1/22 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0065 (2013.01); G02B 5/32 (2013.01); G02B 6/0018 (2013.01); G02B 6/0026 (2013.01); G02B 6/0055 (2013.01); G02B 27/0081 (2013.01); G02B 27/0103 (2013.01); G03H 1/2294 (2013.01); G02B 2027/0107 (2013.01);
Abstract
A method is provided of manufacturing a waveguide comprising an input port, an output port, a transparent medium having a first refractive index (n), a first pair of opposing surfaces and a second pair of opposing surfaces. The method comprises polishing at least one surface of the second pair of opposing surfaces to achieve a separation therebetween, bonding a protective layer to at least one polished surface of the second pair of opposing surfaces; and polishing at least one surface of the first pair of opposing surfaces to achieve a separation therebetween.