Optical spot detection method and system based on fiber coupling

A technology of spot detection and fiber coupling, which is applied in the field of optical measurement, can solve the problems of limited application range and large error, and achieve the effects of cost reduction, wide application range and high precision

Active Publication Date: 2020-04-10
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] For this reason, it is necessary to provide a technical solution for spot detection based on optical fiber coupling, which is used to solve the problems of large errors and limited application range when the current detection method detects spots with drastic changes in light intensity.

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  • Optical spot detection method and system based on fiber coupling
  • Optical spot detection method and system based on fiber coupling
  • Optical spot detection method and system based on fiber coupling

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Embodiment Construction

[0038] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.

[0039] see Figure 4 , the spot detection system detects the shape of the spot by scanning, including a light source 1, a scanning device 2, an optical fiber 4 and a photodetector 5; The device 5 is arranged sequentially along the optical path direction; the scanning device 2 is used to continuously scan the light spot, the optical fiber 4 is used to receive the transmitted light energy, and the photodetector 5 is used to record the coupling energy value; the shape of the light spot and The energy distribution is obtained by deconvolution of the coupled energy values. Preferably, the input light beam is determined according to the optical system to be inspected, and the input light beam may be parallel light or divergent spherical wa...

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Abstract

The invention discloses a light spot detection method and system based on optical fiber coupling. The light spot detection system detects the shape of the light spot by scanning, including a light source, a scanning device, an optical fiber and a photodetector; the light source is used to emit an input light beam , a scanning device, an optical fiber, and a photodetector are sequentially arranged along the direction of the optical path; the scanning device is used to drive the optical fiber to continuously scan the spot, the optical fiber is used to receive the transmitted light energy, and the photodetector is used to record the coupling energy value , the shape and energy distribution of the spot are obtained by the deconvolution operation of the coupling energy value. The invention can not only be used to detect different optical systems, but also can be directly used to detect light sources regardless of the size of the light spot, the degree of divergence and convergence, and has the characteristics of compact structure, convenient use, wide application range and the like.

Description

technical field [0001] The invention relates to the field of optical measurement, in particular to an optical spot detection system and method based on optical fiber coupling. Background technique [0002] With the development of light source technologies such as lasers and LEDs, spot detection has become an important part of optical detection. The most widely used spot detection method in the industry is the slit method. This method has the characteristics of high speed and high precision, but this method is generally only suitable for Gaussian beams. Diffusion function) is not applicable. At the same time, the chopper element and scanning device introduced by the slit method also limit its application range. [0003] At present, the point spread function of the laboratory detection optical system is mostly assisted by a microscope. Due to the aberration of the microscope itself, additional errors will be brought to the spot detection process, resulting in inaccurate mea...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
CPCG01M11/00
Inventor 何锋赟曾飞赵楠胡玥董健刘韬
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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