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Alignment of the wedge scanner prism utilizing second order split reflection
Author(s): Jinsuk Hong; Jung-Hwan Shin; Hae Seog Koh; Sug-Whan Kim
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Paper Abstract

The designed wedge scanner has conventional raster scan pattern canceling the movement along one axis by rotating opposite direction, in which case the alignment of these two wedge scanners affects the imaging performance of the system. To align the wedge scanners more efficiently and effectively, 2nd split rays are used. The ray tracing was performed to predict the precision achievable. The sensitivity according to the movement of the scanner is dependent on the refractive index and slant angle of the wedge and was about 350 times more sensitive when the angle between two vertexes of wedge scanners reaches 1°. The goal was successfully achieved below 0.6 mm in the screen 5 m away, which is 1/4 of the alignment goal.

Paper Details

Date Published: 19 November 2019
PDF: 9 pages
Proc. SPIE 11185, Optical Design and Testing IX, 111850Y (19 November 2019); doi: 10.1117/12.2537083
Show Author Affiliations
Jinsuk Hong, Hanwha Systems (Korea, Republic of)
Yonsei Univ. (Korea, Republic of)
Jung-Hwan Shin, Hanwha Corporation/Defense (Korea, Republic of)
Hae Seog Koh, Defense Advanced R&D Institute (Korea, Republic of)
Sug-Whan Kim, Yonsei Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 11185:
Optical Design and Testing IX
Yongtian Wang; Pablo Benítez; Osamu Matoba, Editor(s)

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