Invention Grant
- Patent Title: Method and system for positioning by using optical speckle
- Patent Title (中): 使用光学斑点定位的方法和系统
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Application No.: US12634707Application Date: 2009-12-10
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Publication No.: US08144339B2Publication Date: 2012-03-27
- Inventor: Yi-Yuh Hwang , Chih-Ming Liao , Chin-Der Hwang , Shin-I Ma , Ting-Wei Chiang , Chun-Hao Chen , Wen-Cheng Huang , Mau-Ran Wang
- Applicant: Yi-Yuh Hwang , Chih-Ming Liao , Chin-Der Hwang , Shin-I Ma , Ting-Wei Chiang , Chun-Hao Chen , Wen-Cheng Huang , Mau-Ran Wang
- Applicant Address: TW Taoyuan County
- Assignee: Chung Shan Institute of Science and Technology, Armaments Bureau, M.N.D.
- Current Assignee: Chung Shan Institute of Science and Technology, Armaments Bureau, M.N.D.
- Current Assignee Address: TW Taoyuan County
- Agency: Bacon & Thomas, PLLC
- Priority: TW98141426A 20091204
- Main IPC: G01B11/14
- IPC: G01B11/14 ; G01B9/02
Abstract:
A method and system for positioning by using optical speckle are disclosed in this invention. A highly coherent laser light irradiates a positioning template in advance to record optical speckles caused by interference by scattered light beams from the positioning template for establishing a speckle database. Furthermore, a reference point is defined to position each recorded speckle. Therefore, a coordinate with respect to the reference point corresponding to a specified speckle can be used to position a target or applied to distance measurement by the speckle database. The precision of the speckles according to the present invention is within several micrometers. Hence, it can provide high precision positioning.
Public/Granted literature
- US20110134434A1 METHOD AND SYSTEM FOR POSITIONING BY USING OPTICAL SPECKLE Public/Granted day:2011-06-09
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