Spectral Domain Oct For Retina Tomography Principle And A Number Of Cell Technology

Optical Coherent Tomography(OCT)is a non-invasive, real-time tomography imaging method with high-resolution which is developing rapidly in recent years. The Spectral OCT can expand the functions of OCT from single imaging in the time-region to pick up and analysis of spectral information, which makes possible to acquire the tomography information of the testing object by a wide spectrum interferogram. It has a broad application on many aspects such as testing the spectrum absorbing characristic and measure the delamination structure such as retina.Several OCT imaging techniques development are summarized in this paper and the advantages and disadvantages are analysed. It is expounded that the OCT imaging technique can be applied to eyes survey.It is investigated on the system structure and the imaging principle of OCT on sprectrum region. By use of Fourier Transform arithmetic and the method of moving reference mirror by a tiny position, the tomography information of the object is simulated arithmetically. It shows good simulating result which gets rid of direct current and mirror noise.The principle and the characteristic parameters of the elements of OCT system are investigated and analysed in this paper. The diffraction intensity distribution is induced and simulated. A optical experimental setup was built and the result testified the OCT deep information acquiring principle.The optical characteristics and the structure parameters of human eyes have been studied. A simple human eye model has been built based on the ZEMAX and analysed on the chromatic aberration in detail. The alterable equipment is designed for compensating dispersion of eye.