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. 17, 2026
Filed:
Dec. 14, 2021
Forus Health Pvt. Ltd., Bangalore, IN;
Sourav Pal, Bangalore, IN;
Justin Antony, Bangalore, IN;
FORUS HEALTH PVT. LTD., Bangalore, IN;
Abstract
Disclosed is a method for defining a structure of an annular light guide device, for a fundus camera. An initial cross section of a wall of a light guide device is created in predefined way. A hollow cavity for a light source is defined within this cross section. The surface of the hollow cavity is an ellipsoid. Using a ray tracing software tool, the initial cross section is refined to maximise total internal reflection of the light from the source within the cross section to achieve most efficient light guide device. Once the final cross section is created, it is rotated by 360 degrees on a predefined axis to obtain final structure of the light guide device. The method is developed for creating very small light guide as required in a fundus camera especially for neonatal applications.