US 12,453,615 B2
Methods and apparatus for wide angle chandelier illuminator
Qing Xiang, Irvine, CA (US); Timothy C. Ryan, Laguna Hills, CA (US); and Yu Yan, Irvine, CA (US)
Assigned to Alcon Inc., Fribourg (CH)
Filed by Alcon Inc., Fribourg (CH)
Filed on Oct. 18, 2022, as Appl. No. 18/047,370.
Claims priority of provisional application 63/264,183, filed on Nov. 17, 2021.
Prior Publication US 2023/0149113 A1, May 18, 2023
Int. Cl. A61B 90/30 (2016.01); A61F 9/007 (2006.01)
CPC A61B 90/30 (2016.02) [A61F 9/00754 (2013.01); A61B 2090/306 (2016.02)] 12 Claims
OG exemplary drawing
 
1. A chandelier instrument for affixation during an eye surgery, the instrument including an optical end of enhanced light distribution character and comprising:
a base with a substantially constant diameter of between about 300 micrometers and about 600 micrometers;
a tapered end cone extending from the base, the tapered end cone having a length of between about 700 micrometers and about 850 micrometers with a taper angle greater than about 8.5°;
an outer grind surface of the tapered end cone formed by circular grinding, the surface of substantially uniform light scattering character;
wherein the tapered end cone further comprises a blunt distal end formed by at least one of grinding and polishing; and
wherein the tapered end cone is configured to provide a beam spread angle in excess of about 100° with a smooth beam distribution absent any hot center or sharp edge beam pattern.