- Patent Title: Extreme ultraviolet (EUV) collector inspection apparatus and method
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Application No.: US17529403Application Date: 2021-11-18
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Publication No.: US11676263B2Publication Date: 2023-06-13
- Inventor: Dong-Hyub Lee , Kyungsik Kang , Jeong-Gil Kim , Jinyong Kim , Hochul Kim , Yozo Matsuda , Youngduk Suh , Seungkoo Lee , Sungho Jang , Yoojin Jeong
- Applicant: Samsung Electronics Co., Ltd.
- Applicant Address: KR Suwon-si
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Suwon-si
- Agency: Muir Patent Law, PLLC
- Priority: KR 20210037441 2021.03.23
- Main IPC: G06T7/00
- IPC: G06T7/00 ; G02B5/10 ; G02B5/20 ; G02B5/08 ; G01M11/00 ; G03F7/20 ; H04N23/56 ; G02B27/10 ; G03F7/00

Abstract:
An extreme ultraviolet (EUV) collector inspection apparatus and method capable of precisely inspecting a contamination state of an EUV collector and EUV reflectance in accordance with the contamination state are provided. The EUV collector inspection apparatus includes a light source arranged in front of an EUV collector to be inspected and configured to output light in a visible light (VIS) band from UV rays, an optical device configured to output narrowband light from the light, and a camera configured to perform imaging from an UV band to a VIS band. An image by wavelength of the EUV collector is obtained by using the optical device and the camera and a contamination state of the EUV collector is inspected.
Public/Granted literature
- US20220309643A1 EXTREME ULTRAVIOLET (EUV) COLLECTOR INSPECTION APPARATUS AND METHOD Public/Granted day:2022-09-29
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