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A focused lighting system and method

A lighting system, lens technology

Active Publication Date: 2021-08-03
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The focusing effect of the light spot in the existing technology is not good, and its special application effect in the microscopic system cannot be realized

Method used

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  • A focused lighting system and method
  • A focused lighting system and method
  • A focused lighting system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] see figure 1 , which is a schematic structural diagram of a focused lighting system in an embodiment of the present invention.

[0037] A focusing illumination system, including a laser 1, a polarizer 2, a first lens 3, a pinhole 4, a shading plate 5, a second lens 6, a radial polarization converter 7 and a partitioned phase filter located on the same optical path 8. The shading plate 5 and the subregional phase filter 8 can move along the direction parallel to the optical path. In this embodiment, the shading plate 5 and the subregional phase filter 8 move along the horizontal direction to change the focus of the light spot size.

[0038] The laser 1 generates a laser beam with good coherence to ensure the focusing effect. The polarizer 2 is used to further improve the polarization degree of the light beam. The first lens 3 and the pinhole 4 jointly realize the shaping and collimation of the beam. The pinhole 4 is used for filtering and shaping, removing astigmatism...

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PUM

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Abstract

The present invention relates to a focused lighting system and method, including a linearly polarized light generating device, a light shield, a second lens, a radially polarized light converter, and a phase partition filter plate located on the same optical path. Compared with the prior art, the present invention The invention combines the annular light beam with the partitioned phase filter by using the shading plate and the phase partition filter, and realizes the effective compression of the focus spot by adjusting the axial displacement of the shading plate and the phase partitioning filter.

Description

technical field [0001] The invention relates to the lighting field, in particular to a focusing lighting system and method. Background technique [0002] In recent years, the special focusing properties of radially polarized beams have attracted attention, and its special intensity at the focal plane has important applications in particle trapping, super-resolution in confocal microscopy, and optical storage. [0003] However, whether it is used to improve the lateral resolution and information capacity of the confocal microscope system, or the control precision of molecular atoms, it is required that the beam focusing spot should be as small as possible. The focusing effect of the light spot in the existing technology is not good, and its special application effect in the microscopic system cannot be realized. Contents of the invention [0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a focusing l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B21/00
CPCG02B21/0032
Inventor 岳成凤唐志列吴泳波
Owner SOUTH CHINA NORMAL UNIVERSITY