US 12,422,334 B2
Optical bench tester for multifocal IOL
Hosik Hwang, Seoul (KR)
Assigned to The Catholic University of Korea Industry-Academic Cooperation Foundation, Seoul (KR)
Filed by THE CATHOLIC UNIVERSITY OF KOREA INDUSTRY-ACADEMIC COOPERATION FOUNDATION, Seoul (KR)
Filed on Oct. 5, 2023, as Appl. No. 18/481,858.
Claims priority of application No. 10-2022-0127519 (KR), filed on Oct. 6, 2022.
Prior Publication US 2024/0118166 A1, Apr. 11, 2024
Int. Cl. G01M 11/04 (2006.01); G01M 11/02 (2006.01); A61F 2/16 (2006.01)
CPC G01M 11/04 (2013.01) [G01M 11/0214 (2013.01); A61F 2/1618 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An optical bench tester for a multifocal intraocular lens, comprising:
a resolution test chart;
at least one optical system that refracts images irradiated from the resolution test chart;
an electrically driven liquid lens unit provided at the rear of the at least one optical system to control the refraction of light passing through;
a model eye having a multifocal intraocular lens on which light transmitting through the electrically driven liquid lens unit is incident;
a camera that captures light transmitted through the model eye;
an offset lens unit that is provided at the rear of the electrically driven liquid lens unit and refracts light refracted by the electrically driven liquid lens unit to diffuse or concentrate the light, thereby moving the refraction range of the light;
an offset lens holder for mounting the offset lens unit in a detachable and exchangeable manner; and
a control unit that controls the electrically driven liquid lens unit to control the refractive index of the electrically driven liquid lens unit, and calculates a defocus curve by analyzing images captured through the camera.