Optimized device for swept source optical coherence domain reflectometry and tomography

摘要

Optimized device for swept source optical coherence domain reflectometry and tomography. In the coherence-optical device, light, with the aid of an interferometer, is used for distance-measuring and imaging purposes on reflecting and scattering areas of the human eye. The optimized device according to the invention consists of includes a tunable light source, matched to the sought-after measurement region ZOCT, with a resonator length LR, an interferometric measurement arrangement, a data capturing unit for capturing the light portions scattered back from the sample and a data processing unit. Here the resonator length LR of the tunable light source is matched not only to the sought-after measurement region ZOCT, but also to the entire interferometric measurement arrangement such that disturbance points present in the interferometric measurement arrangement cannot create disturbance signals in the sought-after measurement region ZOCT.

主权项

1. An optimized device for swept source optical coherence domain reflectometry and tomography of structures including a human eye, comprising:
at least one tunable light source, matched to the sought-after measurement region ZOCT, with a resonator length LR; an interferometric measurement arrangement; a data capturing unit for capturing light portions scattered back from a sample and a data processing unit;wherein the resonator length LR of the tunable light source is matched not only to the sought-after measurement region ZOCT, but also to the entire interferometric measurement arrangement such that disturbance points present in the interferometric measurement arrangement cannot create disturbance signals in the sought-after measurement region ZOCT;
wherein the resonator length LR of the tunable light source is selected such that the following condition is satisfied for at least one disturbance point m in the interfermetric measurement arrangement:
∥L1,m−L2,m|−n*LR|>2*ZOCT   (2)wherein L1 represents a path length 1,L2 represents a path length 2,LR represents the resonator length,ZOCT represents the sought after measurement region,m represents a number of all possible disturbance points, andn represents an integer variable >0.