A low density lipoprotein (LDL) cholesterol testing device, structured with serial reflected face-to-face mirror (SRM) allowing spectrophotometry measurements, is presented. The spectrophotometry has been employed to measure the amount of light that a sample absorbs, but it generally should have had path length longer than 10 mm to secure enough sensitivity. Such requirement of path length has often been problematic in implementing a thin type of lab on a disc (LOD). We developed the SRM system which was implemented in a detection chamber with 1.4mm thickness, providing path length longer than 10mm, and thus straightforwardly being applicable to LOD as thin as a compact disc. The experimental results show that the SRM system gives not only a much thinner design compared to the conventional spectrophotometry-based LOD but also a comparable performance to already commercialized spectrometers.
© 2013 Optical Society of Korea
(040.1880) Detectors : Detection
(120.5700) Instrumentation, measurement, and metrology : Reflection
(280.1415) Remote sensing and sensors : Biological sensing and sensors
(280.4788) Remote sensing and sensors : Optical sensing and sensors
Original Manuscript: May 15, 2013
Revised Manuscript: July 29, 2013
Manuscript Accepted: July 29, 2013
Published: August 25, 2013
Min-Seong Choi and Jae-Chern Yoo, "LDL Cholesterol Testing Device using Serial Reflected Face-to-Face Mirror System," J. Opt. Soc. Korea 17, 296-299 (2013)
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