公开(公告)号：US20250072147A1

公开(公告)日：2025-02-27

申请号：US18788443

申请日：2024-07-30

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Chihoon KIM ,  Mun Seob LEE ,  Sang Yun KIM

IPC: H01L27/146 ,  G02B5/30

Abstract: A micro-lens array is provided. The micro-lens array includes a transparent substrate, a plurality of polarizers disposed on the transparent substrate, a passivation layer covering the plurality of polarizers, and a plurality of micro-lenses disposed on the passivation layer, wherein light reflected to an object passes through the transparent substrate, and then, is polarized based on a plurality of different polarization orientations formed by the plurality of polarizers and is incident on the plurality of micro-lenses.

公开(公告)号：US20250123426A1

公开(公告)日：2025-04-17

申请号：US18912764

申请日：2024-10-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Mun Seob LEE ,  Chihoon KIM

IPC: G02B3/00 ,  H04N23/957

Abstract: A microlens array for obtaining a multi-focus plenoptic image includes a first individual microlens array where first microlenses having one focus distance are arranged on a first substrate, a second individual microlens array where second microlenses having the same or different focus distances are arranged on a second substrate, the second individual microlens array being stacked on the first individual microlens array having the same or different focus distances, and a third individual microlens array where third microlenses having the same or different focus distances are arranged on a third substrate, the third individual microlens array being stacked on the second individual microlens array. As seen in a plane, an array form of the first to third microlenses are configured with two microlenses, which are spaced apart from each other by an interval corresponding to one microlens in a vertical axis and a horizontal axis, on one of the first to third substrates.

公开(公告)号：US20250139868A1

公开(公告)日：2025-05-01

申请号：US18921217

申请日：2024-10-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang Yun KIM ,  Mun Seob LEE ,  Chihoon KIM

IPC: G06T15/00 ,  G06T7/62

Abstract: A method for image processing is provided. The method includes a step of collecting training data including a raw image, a two-dimensional (2D) image, and a depth image of the same object by using a data collection device, a step of learning the raw image and the 2D image to directly reconstruct a three-dimensional (3D) image from the raw image by using a diffusion network executed by a processor, based on a deep denoising learning method, and a step of updating a parameter of the diffusion network by using an update unit executed by the processor, based on a loss function representing a difference between the reconstructed 3D image and the depth image.

公开(公告)号：US20240053516A1

公开(公告)日：2024-02-15

申请号：US18342625

申请日：2023-06-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Mun Seob LEE ,  Sang Yun KIM ,  Chihoon KIM ,  Ji Won PARK

IPC: G02B3/00 ,  H04N23/957

CPC classification number: G02B3/0068 ,  H04N23/957 ,  G02B3/0056 ,  G02B3/0031

Abstract: The present disclosure can effectively improve an angular image resolution and a spatial image resolution compared to the related art by solving a problem of a plenoptic image based on a microlens array according to the related art. In the case of the microlens array according to the related art, microlenses having different numerical apertures (NAs) and F # (F numbers) or focal lengths are positioned on one substrate. However, in the present disclosure, two or more microlens arrays having different NAs and F # are stacked in a layer form (all the microlenses of each microlens array are formed in the same F # and the same NA) to allow various F # and various NAs to be implemented, and thus an image of an object is formed on a sensor plane at different positions. Accordingly, a spatial resolution and a depth resolution increase.