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Rotary type multichannel fluorescence excitation apparatus and method based on input-output optical fiber

A technology of excitation fluorescence, input and output, applied in the field of photoelectric detection in biomedicine, to achieve the effects of high detection accuracy, fast speed, and simple electromechanical structure

Inactive Publication Date: 2008-04-09
BEIJING UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In this way, the two-dimensional plane movement in the X and Y directions is replaced by a rotational movement, which avoids the two-dimensional movement of the optical system. Advantages of high precision

Method used

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  • Rotary type multichannel fluorescence excitation apparatus and method based on input-output optical fiber
  • Rotary type multichannel fluorescence excitation apparatus and method based on input-output optical fiber

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Embodiment

[0018] For the single-channel detection device shown in Figure 1, the light emitted by the light source 1 becomes monochromatic light through the excitation light filter 2, then converges through the incident coupling lens 3, and couples into one of a group of multi-channel input optical fibers 4. In the optical fiber, the monochromatic light irradiates the sample 5 in the reaction cell after coming out of the input optical fiber 4, and the sample 5 is excited to emit fluorescence; The emitted fluorescence becomes parallel light through the output coupling lens 7, and all the narrow-band fluorescence filtered by the release filter 8 is projected onto a rotatable disk, and the drive motor drives the disk to rotate; a hole is opened where the fluorescence is projected onto the disk After the projected fluorescence passes through the hole, it is vertically incident on the photodetector 9, and the photodetector 9 performs photoelectric conversion, amplification, filtering and analo...

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Abstract

The invention discloses a rotary type multichannel fluorescence excitation device and a method based on inlet and outlet optical fibre, belonging to the photoelectric detection field. The device sequentially consists of a light source (1), an incidence coupling lens (3), inlet optical fibre (4), outlet optical fibre (6) and an outlet coupling lens (7), and is characterized in that: the inlet optical fibre is a group of multichannel inlet optical fibre, and the outlet optical fiber is a group of multichannel outlet optical fibre; the rear of the outlet coupling lens also comprises a releasing optical filter or a prism device (8) and a photoelectric detector (9) connected with a computer (10); the light emitted by the outlet optical fibre becomes parallel light through the outlet coupling lens, and the light passing through the releasing optical filter or the prism device is all projected on a rotary disk to drive a motor so as to drive the disk to rotate; a hole is opened in a position where the light is projected on the disk, after passing through the hole, the projection light is vertically injected on the photoelectric detector which is connected with the computer, thus completing a detection; the rotation of the disk sequentially leads the light of each channel optical fibre to pass through the hole for detecting so as to realize a multichannel detection. The mechatronics of the invention has simple structure, fast speed and high detection precision.

Description

technical field [0001] The invention relates to a rotary multi-channel excitation fluorescence device and method based on input and output optical fibers, and belongs to the technical field of photoelectric detection in biomedicine. Background technique [0002] Because the external light source stimulates the object to be detected to induce fluorescence detection, it has very little impact on organisms, animals and human bodies. More importantly, the dynamic range and sensitivity of fluorescence detection are getting higher and higher, approaching or catching up with radioactive detection, so fluorescence detection It is widely used in life sciences, medical research and practical applications, especially in the field of real-time detection of living organisms, animals and human bodies. [0003] In the classic multi-channel excitation-induced fluorescence device and method, one input optical fiber and another output optical fiber are used to transmit light, that is, one inp...

Claims

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Application Information

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IPC IPC(8): G01N21/64G01N21/01
Inventor 冯继宏曾毅耿利娜张清悦刘长波张兰
Owner BEIJING UNIV OF TECH
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