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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.:

US 12411276 B1

PDFFull Text
Date of Patent:
Sep. 09, 2025

Filed:

Mar. 04, 2021

Annular light source device for fundus cameras

Applicant:

Forus Health Pvt. Ltd., Bangalore, IN;

Inventor:

Sourav Pal, Bangalore, IN;

Assignee:

FORUS HEALTH PVT. LTD., , IN;

Attorneys:

Sanders IP Law

JASON SANDERS

Primary Examiner:

Mahidere S Sahle

Int. Cl.
CPC ...
A61B 3/10 (2006.01); A61B 3/00 (2006.01); A61B 3/12 (2006.01); A61B 3/14 (2006.01); F21V 8/00 (2006.01); G02B 19/00 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0001 (2013.01); A61B 3/0008 (2013.01); A61B 3/12 (2013.01); A61B 3/14 (2013.01); G02B 19/0047 (2013.01);
Abstract

A device has a light guide portion and a light collector portion. The light guide portion is cup shaped. The wall of the cup has a cross section defined by sections of two ellipses disposed in a predefined manner with each other. The light collector portion is also cup-shaped, inverted with reference to the light guide portion, by a section of an ellipse and straight lines defined with reference to the light guide portion. The device radiates an annular illumination at the rim of the cup through total internal reflection of light from an LED, collected by the light collector portion. The device is made of a clear, colourless, substantially transparent material by injection moulding, one example being Polycarbonate. An annular light source system and a fundus camera using such a system are also disclosed.

Find Patent Forward Citations

Pal, Sourav. (2025). Annular light source device for fundus cameras (U.S. Patent No. 12411276). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12411276

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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