Optical tweezers with adjustable laser beam intensity

A laser beam and optical tweezers technology, applied in the field of optical tweezers, can solve the rare problems of single-fiber optical tweezers

Inactive Publication Date: 2018-12-28
长沙健金电子技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of these new optical tweezers can realize the functions of capturing, spatially positioning, and spatially rotating a single particle, but it is rare to see a single-fiber optical tweezer that can operate multiple particles at the same time

Method used

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  • Optical tweezers with adjustable laser beam intensity
  • Optical tweezers with adjustable laser beam intensity
  • Optical tweezers with adjustable laser beam intensity

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specific Embodiment

[0029] In actual use, the user captures the particles or cells in the cell chamber 9 through the optical tweezers device, the laser light emitted by the laser 2 propagates through the optical fiber 3, and the laser light propagated by the optical fiber 3 is refracted to the The dimmer 6 arranged in the lens barrel, wherein the dimmer 6 is set as a translucent plate that gradually changes from transparent to translucent, and the translucent plate is used to adjust the strength of the optical tweezers, and the laser beam propagates to the objective lens through the dimmer 6 7. Converge in front of the objective lens 7 to form optical tweezers to shoot to the particles or cell chambers 9 on the stage 8, in this way to select qualified particles or unqualified particles.

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Abstract

The invention discloses an optical tweezers device with adjustable laser beam intensity. The optical tweezers device comprises a laser power supply, a laser device, an optical fiber and a microscope;the laser power supply is connected with the laser device, the laser emitted by the laser device is propagated through the optical fiber, and the laser propagated by the optical fiber is refracted toa dimming plate arranged in a lens cone through a refractive plate arranged in the microscope lens cone, and is propagated to an objective lens through the dimming plate, thereby forming optical tweezers by converging in front on the objective lens to shoot to particles or cell rooms on an objective table; an image sensor is arranged in the lens cone, and the image sensor is connected with a display through an image processor. The optical tweezers device disclosed by the invention is simple and practical in structure, capable of realizing the precise capturing, conveying and screening and likeoperations on the particles or the cells, and the intensity of the optical tweezers can be flexibly adjusted.

Description

technical field [0001] The invention relates to the technical field of optical tweezers, in particular to an optical tweezers device with adjustable laser beam intensity. Background technique [0002] Optical tweezers use the gradient force formed by the spatial variation of the optical field intensity to stably capture the particles at the strongest point of the optical field, that is, the focal position of the beam. When the laser beam moves, it can drive the particles to move together, realizing the precise control of the particles. Cells are the basic unit of life structure and function, and the characteristics of optical tweezers for manipulating particles in the micrometer range are just in line with the research of cells and subcellular levels. In the competition of various new technologies at the end of the 20th century, optical tweezers showed dazzling brilliance because of its unique function of dynamically studying living cells. Traditional optical tweezers are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B21/32G02B21/06G21K1/00
CPCG02B21/06G02B21/32G21K1/006
Inventor 林建斌
Owner 长沙健金电子技术有限公司
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