Optical coherent chromatographic imaging system with adaptive optical path regulator

A technology of optical coherence tomography and adjustment device, which is applied in the field of medical instruments, can solve the problems of large influence of angle change, and achieve the effects of stable optical properties, self-adaptive optical path adjustment, and simple structure.

Inactive Publication Date: 2002-12-11
TSINGHUA UNIV
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Problems solved by technology

The change of the left and right displacement has no effect, but the change of the angle has a great influence

Method used

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  • Optical coherent chromatographic imaging system with adaptive optical path regulator
  • Optical coherent chromatographic imaging system with adaptive optical path regulator
  • Optical coherent chromatographic imaging system with adaptive optical path regulator

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specific Embodiment approach

[0018] In the present invention, an adaptive optical path adjusting device is set in the optical path of the reference arm or measuring arm of the original OCT system. middle. figure 2 It is a specific embodiment of the present invention, which shows that when the reference arm of the OCT system adopts an optical delay line composed of a fiber collimator 1, an achromatic lens 3, a blazed grating 2, a vibrating mirror 4 and a plane mirror 5 , the adaptive optical path adjustment device adopts a cubic prism 7, which is arranged in the parallel light path emitted by the fiber collimator 1, and makes the plane reflector 5 stationary.

[0019] In order to make its structure compact, a plane reflector 6 can also be arranged in the light path emitted by the cube prism.

[0020] Since the plane mirror 5 is stationary, there is no change in the angle of the mirror. The adjustment of its optical path is accomplished by the forward and backward movement of the cubic prism. Of course,...

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Abstract

The technological scheme of fiber coherent chromatographic imaging is that an adaptive optical path regulator is set in the parallel optical path of fiber collimator in either reference arm or measurement arm of optical coherent chromatographic imaging system. The regulator has a movable cubic prism or cat's eye system for optical path regulation. The cubic prism or cat's eye ystem has its reflected light always parallel to its incident light, so that its miniature swinging during translation has no any influence on the subsequent optical system and this reach the aim of adaptive optical pathregulation.

Description

technical field [0001] The invention relates to an optical coherence tomography (OCT) system, in particular to an optical coherence tomography system with an adaptive optical path adjustment device, and belongs to the technical field of medical instruments. Background technique [0002] Optical coherence tomography (Optical Coherence Tomography, OCT for short) is a new technology developed in recent years. Damage, clear imaging and other advantages. OCT technology is widely used in the medical field, and can be used for early diagnosis of some diseases in ophthalmology, dermatology, esophagus and stomach. It is also widely used in materials and basic research. [0003] An OCT system consists of a light source with a very short coherence length, a Michelson interferometer, usually made of fiber optics, a measurement arm, where the light is directed onto the sample to be measured, a reference arm, where the light is directed onto a mirror, and a Photoelectric converters and...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00A61B6/02A61B6/03G01N21/00
Inventor 郭继华高湔松孙汕许小楠
Owner TSINGHUA UNIV
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