Title :
Development of an optical ruler for range finding using a binary Fresnel hologram
Author :
Nishida, Shigeki ; Oshida, Yoshihiro
Author_Institution :
Dept. of Control Eng., Nara Nat. Coll. of Technol., Nara, Japan
fDate :
Aug. 28 2011-Sept. 1 2011
Abstract :
We propose an optical ruler for range finding using a Fresnel hologram which can project several different diffraction images depending on the imaging distance. The distance resolution equivalent to the scale width of a ruler was obtained by computer simulation. The optical ruler was fabricated using electron beam lithography. The fabricated optical ruler acted on a ruler for range finding with distance resolution of 20 millimeters.
Keywords :
computer-generated holography; distance measurement; electron beam lithography; binary Fresnel hologram; computer simulation; diffraction images; distance resolution; electron beam lithography; imaging distance; optical ruler; range finding; Diffraction; Image resolution; Multiplexing; Optical device fabrication; Optical diffraction; Optical imaging;
Conference_Titel :
Quantum Electronics Conference & Lasers and Electro-Optics (CLEO/IQEC/PACIFIC RIM), 2011
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4577-1939-4
DOI :
10.1109/IQEC-CLEO.2011.6193773
