A laser device and method

A laser and photomask technology, applied in the laser field, can solve the problems of increasing the number of mosquito killing devices, reducing the effect of chemical methods, and failing to achieve the killing effect, and achieves the effects of simple structure, high cost performance, and easy maintenance.

Inactive Publication Date: 2021-03-26
HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] First, although the method of chemical pest control is efficient, it also causes a certain degree of pollution to the environment; the use of pesticides in agricultural production directly leads to the fact that the fruits of crops are rich in toxic pesticides, and long-term consumption will affect human health;
[0007] Second, although the method of physical destruction is non-polluting, the initiative of this kind of method is poor, the scope of destruction is limited, and the effect of destruction is not obvious, and it cannot achieve a very thorough and good effect of destruction;
[0008] The 3rd, existing chemical and physical harm killing method, all can only carry out mosquito killing at general housing space scope when carrying out life killing mosquitoes and flies, in large breeding ground area or breeding area, these methods just are not easy to implement, The effect of chemical methods decreases with the expansion of the space range, and has chemical damage. Physical mosquito control will inevitably increase the number of mosquito control devices, and the cost is high

Method used

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  • A laser device and method
  • A laser device and method
  • A laser device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The laser harm killing device that embodiment 1 provides is a kind of laser mosquito killing device combining ellipsoidal optical properties and photocatalyst; Its working environment is indoor, and its partial ellipsoid reflector eccentricity The major axis a is 70cm, and the focal length c is 50cm; the surface shape of the laser light source is a rotatable elliptical surface with a fixed position, and a rectangular surface light source can also be used; the main wavelength of the laser light source is 365nm;

[0052] Under the working initial state of the laser harm killing device that embodiment 1 provides, its optical path initial state is as follows figure 2 As shown, the beam divergence angle θ 1 is 9°; the angle between the incident angle and the vertical direction α 0 0°~45°; the light beam is reflected by a part of the ellipsoidal reflector, passes through the diaphragm on the side of the dark box, and irradiates the area centered on the left focal point II ...

Embodiment 2

[0059] The laser harm killing device that embodiment 2 provides, its structure is as Image 6 As shown, it is a kind of laser harm killing device using the optical properties of the partial ellipsoidal reflector, and its working environment is a large-scale farmland; the eccentricity of the partial ellipsoidal reflector The major axis a is 7m, and the focal length c is 5m; the light source emits a vertically upward elliptical annular beam with a divergence angle θ 1 5°~9°; the dominant wavelength λ of the beam 2 It is 330nm~400nm; the light source can be translated along the axial direction (positive to the left); in the initial state, the center of the light source coincides with the right focus I of the partial ellipsoid mirror, such as Figure 7 As shown; the induced light beam passes through the reflective surface of a part of the ellipsoidal mirror, and passes through the diaphragm on the side of the obscura to form a large-scale mask;

[0060] After the first preset t...

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Abstract

The present invention discloses a laser pest-killing device and method. Pests are inductively killed by using sensitivity and phototaxis of pest visual nerves to a specific wavelength range of light and optical properties of a partially elliptical mirror. The laser pest-killing device comprises an ellipsoidal mirror, a light source, a light source bracket and a dark chamber with an aperture slot. The light emitted by the light source with a certain divergence angle in the focal region of the ellipsoidal mirror forms a magnified light spot and a corresponding space mask corresponding to the magnified light spot on other side of the ellipsoidal mirror after ellipsoidal reflection of the partially elliptical mirror. The mask is changed from big to small by changing the reflection point position of the incident light on the ellipsoidal mirror, so that the purpose of optical control of the pests is achieved. The laser pest-killing device aims at trapping the pests while avoiding from doing harm to the human or environment; meanwhile, according to differences of pest-killing environments, and the devices with different scales can be adopted, so that the device has the characteristics of being green and efficient.

Description

technical field [0001] The invention belongs to the field of laser technology, and more specifically, relates to a laser harm killing device and method. Background technique [0002] In agricultural production, winged subclass pests cause large-scale damage to crops. For the damage caused by pests, the methods of killing pests are mainly divided into two categories: chemical killing and physical killing. [0003] Chemical pest control is to directly spray poisonous chemicals in the environment where pests are active. For example, in agricultural production, insecticides are directly sprayed on large areas of vegetation to kill pests; in family life, mosquito coils or Insecticides are used to kill mosquitoes. [0004] Physical pest control does not directly apply toxic drugs to the environment, but uses various biological properties of pests to trap and kill. For example, in agricultural production, sexual traps, yellow board traps, sweet and sour traps, poison bait traps, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01M1/04
Inventor 朱广志朱晓赵文广王海林齐丽君宋恩茂
Owner HUAZHONG UNIV OF SCI & TECH
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