公开(公告)号：US20240382090A1

公开(公告)日：2024-11-21

申请号：US18621857

申请日：2024-03-29

Applicant: YOUNG OPTICS INC.

Inventor： Ching-Lun LIN ,  Ching-Sheng CHANG ,  Cheng-Hung CHEN

IPC: A61B3/12 ,  A61B3/14

Abstract: An ophthalmic imaging system includes a first lens group, an illumination light source, an imaging module, a fixation light, a reflective element, at least one light-blocking member, and a first polarizer. The first lens group includes an aspheric first lens. The fixation light provides a light beam and includes at least three light-emitting components. The reflective element is configured to reflect the light beam and direct the light beam towards the aspheric first lens. The light-blocking member is disposed downstream from and in a light path of the fixation light and disposed upstream from and in a light path of the reflective element. The first polarizer is disposed downstream from and in the light path of the fixation light and disposed upstream from and in the light path of the reflective element to polarize the light beam.

公开(公告)号：US20240361574A1

公开(公告)日：2024-10-31

申请号：US18763511

申请日：2024-07-03

Applicant: Young Optics Inc.

Inventor： Ching-Sheng CHANG ,  Chia-Chen KUNG ,  Chiu-Jung LAI ,  Kuo-Chuan WANG

IPC: G02B13/00 ,  G02B9/10

CPC classification number: G02B13/003 ,  G02B9/10

Abstract: A low thermal-drift optical lens includes a first lens group, a second lens group and an aperture stop. The first lens group includes a first lens and a second lens, and the second lens group includes a third lens and a cemented lens. The aperture stop is disposed between the second lens and the cemented lens, and a lens with a refractive power of the low thermal-drift optical lens closest to the minified side has at least one inflection point. In an operating temperature range of −40° C. to 80° C., a thermal drift of the low thermal-drift optical lens relative to a focal plane at 25° C. is less than or equal to 10 um.