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|Title:||Resolution improvement of one-dimensional comb-type PSD by subdivision|
|Authors:||Lin, B;Qi, X;Cao, X;Long, R;Tan, C;Lin, M|
|subject:||Array;Grating;Position Sensitive Detector;Subdivision|
|Publisher:||S P I E - International Society for Optical Engineering. The Journal's web site is located at http://www.spie.org/app/Publications/index.cfm?fuseaction=proceedings|
|Description:||Implementation of a 4 by 1 comb-type Position sensitive detector (PSD) array for position sensing applications is presented. Unlike conventional application, we utilize the method of subdivision to increase the resolution of PSD beyond the feature of photosensitive area, which is presented periodically. To obtain output signal of comb-type PSD, classic grating subdivision circuit is used. Resolution of 6.25 μm of comb-type PSD is achieved using optical grating array of a 50 μm in pitch and signal power of 3mW. The resolution is limited by the spacing of comb-type PSD and the mismatch of position of PSD array and optical grating array.|
|Standard no:||Proceedings of SPIE - The International Society for Optical Engineering, 2006, v. 6150 I|
|Appears in Collections:||Department of Anatomy|
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