Optical Design for OCT
This chapter aims to provide insights and tools to design high-quality optical subsystems for OCT. First, we discuss the various optical subsystems common to OCT and relevant optical design criteria. Second, we review several fundamental optical design principles important for OCT designs. Finally, we discuss a number of examples of designed optical systems for OCT.
To simplify the discussion, the following schematics of OCT in the time domain and spectral domain (or Fourier domain) are shown in Fig. 12.1. The major subsystems are labeled by Roman numerals. Illumination sources and sample scanners are labeled by I and II, respectively, in both schematics in Fig. 12.1. Numeral III refers to a scanning optical delay line (ODL), while numeral IV refers to a fixed-pathlength ODL. Numeral V refers to a single-point detector, and numeral VI refers to an array-based spectrometer (for spectrometer-based Fourier-domain OCT). This notation will refer to these subsystems throughout the chapter.
KeywordsSpectral Response Optical Design Spherical Aberration Axial Resolution Chromatic Aberration
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