NOVEL TYPE SUBMICROMETER RESOLUTION PSEUDORANDOM POSITION OPTICAL ENCODER

Authors
DURANA M GALLAY R ROBERT P PRUVOT FC
Citation
M. Durana et al., NOVEL TYPE SUBMICROMETER RESOLUTION PSEUDORANDOM POSITION OPTICAL ENCODER, Electronics Letters, 29(20), 1993, pp. 1792-1794
Citations number
10
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
Electronics Letters → ACNP
ISSN journal
00135194
Volume
29
Issue
20
Year of publication
1993
Pages
1792 - 1794
Database
ISI
SICI code
0013-5194(1993)29:20<1792:NTSRPP>2.0.ZU;2-T
Abstract
A novel absolute position optical encoder using two, pseudorandom and periodic, synchronously engraved tracks on a glass slab is presented. The encoded track is read with a GRIN lens and a linear CCD array toge ther with the appropriate signal processing. The spatial coupling of b oth tracks gives submicrometre resolution when the periodic track is r ead with the standard Moire technique.