Anterior-posterior segment frequency domain optical coherence tomography system

A tomography and optical coherence technology, used in fundus mirrors, eye testing equipment, medical science, etc., can solve problems such as operational complexity and increased working distance, and achieve the effect of simplifying the detection operation process and system structure

Active Publication Date: 2020-02-07
天津迈达医学科技股份有限公司
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Problems solved by technology

This has just brought the following problems: 1, due to the need to replace or increase the imaging objective lens, it will inevitably bring operational complexity; 2, due to the need to replace or increase the imaging objective lens, the working distance will be increased, which will affect the work of the entire system structure. The distance range brings additional requirements; 3. In order to adapt to the conversion from the fundus imaging mode to the anterior segment imaging mode, the compensation range of the reference arm also brings additional requirements

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  • Anterior-posterior segment frequency domain optical coherence tomography system
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  • Anterior-posterior segment frequency domain optical coherence tomography system

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Embodiment Construction

[0036] An anterior and posterior segment frequency-domain optical coherence tomography system of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.

[0037] Such as figure 1 As shown, an anterior and posterior segment frequency-domain optical coherence tomography system of the present invention includes an optical fiber attenuator 1.2, an optical circulator 1.3, and an optical fiber splitter arranged in sequence along the optical axis of the scanning imaging light source SLD1.1 of the OCT system. The optical transmission system 1 composed of the beam splitter 1.4, the fiber polarization controller 1.5 and the fiber collimator 1.6 is used to receive a path of light split by the fiber splitter 1.4 and return to the optical delay line assembly of the fiber splitter 1.4 after delay 2. It is characterized in that it also includes a scanning conversion unit 3 arranged on the light output side of the optical transm...

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Abstract

The invention relates to an anterior-posterior segment frequency domain optical coherence tomography system, in the anterior segment / posterior segment imaging process, an FD-OCT system adopts the sameoptical path hardware, and conversion of a scanning focus range of probe light from the fundus retina to the cornea is achieved by internally adjusting the position of a scanning conversion assemblyspecially designed in a sample arm. In the anterior segment / posterior segment imaging process of the eye, the frequency domain optical coherence tomography imaging system adopts the same optical pathhardware; by internally adjusting the position of the scanning conversion assembly specially designed in the sample arm, conversion of the scanning focus range of the probe light from the fundus retina to the cornea is achieved, and therefore the anterior segment and posterior segment frequency domain optical coherence tomography system can have the anterior segment imaging function without addingthe FD-OCT system hardware. According to the invention, an anterior segment imaging function of the posterior segment frequency domain optical coherence tomography system can be realized without adding an additional imaging objective lens, and the use and detection operation process and the system structure are simplified.

Description

technical field [0001] The invention relates to an anterior and posterior segment imaging system. In particular, it relates to an anterior and posterior segment frequency-domain optical coherence tomography system. Background technique [0002] Optical coherence tomography (OCT) has been successfully used in the field of ophthalmic disease diagnosis since the 1990s due to its advantages of high resolution, high sensitivity, non-contact, nondestructive real-time live imaging, etc. [1] Afterwards, it has developed rapidly, and its technology has also developed from the time-domain OCT stage to the frequency-domain OCT stage; the technical field has also developed from tissue structure imaging to tissue function imaging. Frequency-domain OCT, including FD-OCT and SS-OCT, has become the first choice for early diagnosis of age-related macular degeneration, diabetic retinopathy, glaucoma and other fundus lesions in clinical ophthalmology due to its high resolution and rapid imagi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/10A61B3/12A61B3/14
CPCA61B3/0008A61B3/102A61B3/12A61B3/14
Inventor 李跃杰徐秋晶刘嘉灏王立伟
Owner 天津迈达医学科技股份有限公司
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