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Novel light trapping device

A light-trapping and new-type technology, applied in the field of optics, can solve the problems of large background noise and low light-absorbing ability, and achieve the effect of ensuring relatively fixed and improving light-absorbing ability

Pending Publication Date: 2019-03-12
BEIFANG UNIV OF NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing optical trap structure has low light absorption capacity, and there is a problem that the light is reflected back into the measurement system, causing the background noise to be too large

Method used

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  • Novel light trapping device
  • Novel light trapping device
  • Novel light trapping device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0044] see figure 2 , this embodiment schematically discloses a novel light trapping device, comprising: a first mirror group 1, the first mirror group 1 includes at least one first mirror 2, and each first mirror 2 includes The first reflective surface 21 and the second reflective surface 22, the first reflective surface 21 and the second reflective surface 22 form a first reflective mirror 2 with an included angle, and the at least one first reflective mirror 2 is distributed sequentially along the incident direction of the incident laser light The second reflector group 3, the second reflector group 3 includes at least one second reflector 4, each second reflector 4 includes reflective surface three 41 and reflective surface four 42, the reflective surface three 41 and reflective surface four 42 Reflecting surface 442 forms a second reflector 4 with an included angle, and the at least one second reflector 4 is distributed sequentially along the incident direction of the in...

Embodiment 3

[0054] see image 3 The main difference between this embodiment 3 and the above-mentioned embodiment 1 is that the first reflective surface 21 and the second reflective surface 22 are connected head to tail and placed in parallel, and the first reflector group 1 forms an inline structure as a whole; The third reflective surface 41 and the fourth reflective surface 42 are connected end to end and placed in parallel, and the second reflective mirror group 3 forms an inline structure as a whole.

Embodiment 4

[0056] see Figure 4 The main difference between this embodiment 4 and the above-mentioned embodiment 2 is that the reflective surface one 21 and the reflective surface two 22 are connected head to tail and placed in parallel, and the first reflective mirror group 1 forms an inline structure as a whole; The third reflective surface 41 and the fourth reflective surface 42 are connected end to end and placed in parallel, and the second reflective mirror group 3 forms an inline structure as a whole.

[0057] Although in the above several embodiments, the light trapping device only contains three first reflectors 2 and three second reflectors 4, it is easy to understand that under the condition that the incident laser light is completely absorbed by the light trapping device, The number of the first reflector 2 and the second reflector 4 is not limited, and may be one or two or four or more.

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PUM

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Abstract

The invention relates to a novel light trapping device. The novel light trapping device comprises a first reflecting mirror group and a second reflecting mirror group, wherein the first reflecting mirror group comprises at least one first reflecting mirror, and each first reflecting mirror comprises a reflecting surface I and a reflecting surface II; the second reflecting mirror group comprises atleast one second reflecting mirror, and each second reflecting mirror comprises a reflecting surface III and a reflecting surface IV; the reflecting surface III is parallel to the reflecting surfaceII, and the reflecting surface IV is parallel to the reflecting surface I; a first light-absorbing material is arranged on the back face of each of reflecting surfaces I, II, III and IV. According tothe light trapping device, incident laser is reflected back and forth between the first reflecting mirror group and the second reflecting mirror group, and part of laser transmits through the reflecting mirrors and is absorbed by the first light-absorbing materials whenever the incident laser enters reflecting surfaces; through subjecting the incident laser to repeated reflection and absorption, the light absorbing capability of the light trapping device is greatly improved.

Description

technical field [0001] The invention relates to the field of optics, in particular to a novel light trapping device. Background technique [0002] At present, the main methods for detecting the concentration of dust particles in the air are contact measurement method and non-contact measurement method. Contact measurement methods include weighing method, sedimentation method, sieving method and so on. Non-contact measurement methods include light scattering and light transmission methods. Although the weighing method has high precision, the detection method is complex, the weighing environment is extremely demanding, time-consuming, labor-intensive, and the detection results cannot be displayed in real time, let alone continuous detection. Therefore, although the accuracy of the optical method for measuring dust particles is lower than that of the weighing method, it has the advantages of real-time monitoring, short time consumption, manpower saving, and continuous detecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
CPCG01N15/06G01N15/075
Inventor 康学亮张白
Owner BEIFANG UNIV OF NATITIES