Invention Grant
US07773307B2 Phase mask with continuous azimuthal variation for a coronagraph imaging system
有权
冠状成像系统具有连续方位角变化的相位掩模
- Patent Title: Phase mask with continuous azimuthal variation for a coronagraph imaging system
- Patent Title (中): 冠状成像系统具有连续方位角变化的相位掩模
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Application No.: US11637288Application Date: 2006-12-12
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Publication No.: US07773307B2Publication Date: 2010-08-10
- Inventor: Chun-Ching Shih
- Applicant: Chun-Ching Shih
- Applicant Address: US CA Los Angeles
- Assignee: Northrop Grumman Space & Mission Systems Corporation
- Current Assignee: Northrop Grumman Space & Mission Systems Corporation
- Current Assignee Address: US CA Los Angeles
- Agency: Tarolli, Sundheim, Covell & Tummino LLP
- Main IPC: G02B13/08
- IPC: G02B13/08
Abstract:
Systems and methods for shifting the phase of incident light to induce a continuous phase variation in an azimuthal direction. A phase mask assembly has a first surface and a second surface. The first surface and the second surface are configured such that the distance between the first surface and the second surface varies continuously in an azimuthal direction around the phase mask. This mask can be used in a coronagraph system to effectively suppress the on-axis star image for the detection of off-axis planets.
Public/Granted literature
- US20080137171A1 Phase mask with continuous azimuthal variation for a coronagragh imaging system Public/Granted day:2008-06-12
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