Spiral scanning method of OCT imaging device

An imaging device and helical scanning technology, applied in medical science, eye testing equipment, diagnosis, etc., can solve the problems of excessive acquisition time and occupying the total acquisition time, so as to improve scanning time, improve efficiency and performance, and avoid excessive The effect of sampling

Inactive Publication Date: 2019-08-23
广东唯仁医疗科技有限公司
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Problems solved by technology

For an area like the cornea of ​​the eyeball, the actual required image is a circular area, while the image obtained by scanning with a straight line is a rectangle, so unnecessary acquisition time is spent outside the area of ​​interest, and this scanning method is controlled The control waveform signal of the scanner requires a return trip after completing one scan of the fast axis, which also takes part of the total acquisition time

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  • Spiral scanning method of OCT imaging device
  • Spiral scanning method of OCT imaging device
  • Spiral scanning method of OCT imaging device

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Embodiment Construction

[0026] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] Existing scanners mostly use "m"-shaped plane scanning or circular scanning, as shown in Figure 1.

[0028] Depend on Figure 1a It can be seen that t...

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Abstract

The invention provides a spiral scanning method of an OCT imaging device. The OCT imaging device comprises a light source, a light source control module, a galvanometric scanner and a galvanometric scanner control module; during scanning of the galvanometric scanner, the pupil is taken as the scanning center, the linear speed is constant, and after scanning is completed, the galvanometric scannerreturns to the original position. According to the spiral scanning method, a round area can be directly subjected to similar circular scanning in a spiral scanning mode, it is avoided that by adoptingother modes, excess areas are scanned, and the scanning time of a system is shortened; the defect is overcome that during circular scanning, the too centralized sampling phenomenon easily occurs on the central position; meanwhile, by designing and determining a gap between every two spiral scanning paths, oversampling is avoided, and the efficiency and performance of the image collection system are improved.

Description

technical field [0001] The invention belongs to the technical field of ophthalmic inspection instruments, and in particular relates to a helical scanning method for an OCT imaging device. Background technique [0002] Optical coherence tomography (OCT) has become an important tool in the detection of ophthalmic diseases. At present, most ophthalmic optical coherence tomography imaging systems scan a single focal point on the surface of the sample to obtain B-scan and three-dimensional images. [0003] The beam scanning method of non-resonant and resonant mirror scanners that is often used at present is a plane scanning method that synthesizes line scans of the fast axis (X direction) and the slow axis (Y direction). For an area like the cornea of ​​the eyeball, the actual required image is a circular area, while the image obtained by scanning with a straight line is a rectangle, so unnecessary acquisition time is spent outside the area of ​​interest, and this scanning metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/10A61B3/107
CPCA61B3/0016A61B3/102A61B3/107
Inventor 高儒将贺潇叶欣荣
Owner 广东唯仁医疗科技有限公司
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