CN212160092U - Device for quickly adjusting optimal light intensity of emitted light by aerosol laser radar - Google Patents

Abstract

The utility model discloses a device of best light intensity of aerosol laser radar quick adjustment ejection light, the device include pyramid prism, prism dustcoat and support ring, the support ring up end links firmly the connecting plate of two parallels, pyramid prism fix in the prism dustcoat, the prism dustcoat is above support ring central line one side partially, both sides face links firmly with the connecting plate, the support ring down the terminal surface be equipped with the countersunk groove of the shell diameter adaptation at cassegrain telescope top. The utility model discloses make the light of the reflection through the inside plane speculum of cassegrain telescope shell turn back behind the pyramid prism to the realization can find best emergent light focus best light intensity position fast, has improved production efficiency, consequently the utility model discloses make high altitude air quality situation detection equipment can find best emergent light intensity position fast.

Description

Device for quickly adjusting optimal light intensity of emitted light by aerosol laser radar

Technical Field

The utility model relates to an aerosol laser radar quick adjustment jets out device of the best light intensity of light.

Background

The principle of detecting the high-altitude air quality condition is shown in figure 1, a laser emitter 18, a collimating mirror 19 and a plane reflector 20 are fixedly connected to the outer wall of a Cassegrain telescope, the front end of the shell of the Cassegrain telescope is a front window sheet 10, the center of the shell of the Cassegrain telescope is provided with the plane reflector 11, the lower part of the shell is connected with a convex reflector 12, the lower part of the shell is provided with a focus F14, an analysis and processing system 15 and a signal acquisition system 16, and the basic principle is as follows: YAG laser is emitted to atmosphere as light source and interacts with atmosphere components to generate radiation signals of physical, chemical and optical information, which is the main basis for inverting relevant information of atmosphere components. Namely, the receiving system receives the echo signals of the backscattering of spherical particles and non-spherical particles in the atmospheric medium to invert the structure and optical parameters of atmospheric aerosol, sand particles, cloud and the like. Spherical particles are backscattered linearly polarized and non-spherical particles are no longer linearly polarized but are instead passed by two parallel and perpendicular polarization components, such as dust and clouds, and the depolarization characteristics of the particles can be measured. The optical path is: the laser 18 emits light → the collimating mirror 19 → the plane reflecting mirror two 20 → the plane reflecting mirror one 11 → the spherical particles in the atmosphere 9 and the aspherical particles in the atmosphere 8 → the concave reflecting mirror 13 → the convex reflecting mirror 12 → the focal point F14 → the diaphragm assembly 17. The sizes and the surface shapes of the processed parts cannot be completely consistent, and the thickness and the position of the glue joint cannot be completely consistent when the parts are installed, so that the positions of the light rays received by each installed Cassegrain telescope from the outside after being reflected by the concave reflector 13 and the convex reflector 12 and focused at the F point cannot be completely consistent. In order to find the focusing position of each device, a diaphragm assembly 17 with the functions of adjusting light intensity, field of view and collimation is additionally arranged at the bottom of the Cassegrain telescope, and the position of the optimal emergent light focus can be judged and locked by moving the assembly up and down. And convenience is provided for later installation of the signal acquisition unit. Above-mentioned air quality situation detection device in high altitude has following problem, and every equipment need be in the operating condition under the atmospheric environment when confirming best emergent light intensity position, just can find this position to reciprocate diaphragm subassembly 17, consequently can not find best emergent light intensity position fast, has reduced work efficiency, has influenced the judgement to telescope installation quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving high altitude air quality situation detection device and can not find out best emergent light intensity position fast, reduce work efficiency, can not the problem of accurate judgement equipment middle telescope installation quality.

In order to solve the technical problem, the utility model discloses a technical scheme is: the device for quickly adjusting the optimal light intensity of the emitted light by the aerosol laser radar is characterized by comprising a pyramid prism, a prism outer cover and a support ring, wherein the upper end face of the support ring is fixedly connected with two parallel connecting plates, the pyramid prism is fixed in the prism outer cover, the prism outer cover is biased on one side of the central line of the support ring, two side faces are fixedly connected with the connecting plates, and the lower end face of the support ring is provided with a countersunk groove which is directly matched with the diameter of the shell at the top of the Cassegrain telescope.

By adopting the technical scheme, the countersunk groove at the lower part of the support ring of the device is sleeved at the top of the Cassegrain telescope, light emitted from the laser is refracted to the pyramid prism through the collimating mirror, the plane mirror and the plane reflector by rotating to a proper angle, the light is refracted to the pyramid prism for two times in the pyramid prism and then reaches the reflector at the bottom of the Cassegrain telescope, and the light is refracted to the rear by the convex mirror to collect a light-gathering point, so that the optimal emergent light intensity position is obtained.

Preferably, the effective diameter of the end face of the pyramid prism is larger than 2 times of the projection diameter of the plane reflector in the cassegrain telescope in the horizontal plane and smaller than the effective diameter of the projection of the concave reflector of the cassegrain telescope in the horizontal plane.

The fixing of the angle prism in the prism outer cover is realized in such a way, the bottom of the pyramid prism is provided with an annular boss extending radially, the opening end of the prism outer cover is provided with a countersunk groove matched with the diameter of the annular boss of the pyramid prism, the boss at the bottom of the pyramid prism is arranged in the countersunk groove at the opening end of the prism outer cover, and the locking ring in threaded connection with the inner wall of the countersunk groove of the prism outer cover is arranged below the pyramid prism in the countersunk groove to realize the fixing of the pyramid prism in the prism outer cover.

To sum up, the beneficial effects of the utility model are that the utility model discloses install the top at high altitude air quality situation detection equipment's cassegrain telescope shell, make the light of the reflection through the inside plane reflecting mirror of cassegrain telescope shell turn back behind the pyramid prism to the realization can find best emergent light focus best light intensity position fast, has improved production efficiency, consequently the utility model discloses make high altitude air quality situation detection equipment can find best emergent light intensity position fast.

Drawings

FIG. 1 is a schematic diagram of a high air quality condition detection apparatus;

fig. 2 is a sectional view of the present invention;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a left side view of this FIG. 2;

fig. 5 is an optical path diagram of the high-altitude air quality situation detection device after the installation of the utility model.

In the figure, 1, a pyramid prism, 2, a prism outer cover, 3, a locking ring, 4, a connecting plate, 5, a supporting ring, 6, a first screw, 7, a second screw, 8, non-spherical atmospheric particles, 9, spherical atmospheric particles, 10, a front window sheet, 11, a first plane mirror, 12, a convex mirror, 13, a concave mirror, 14, a focus F, 15, an analysis and processing system, 16, a signal acquisition system, 17, a diaphragm assembly, 18, a laser, 19, a collimating mirror, 20, a second plane mirror, 21 and a central shaft of a telescope.

Detailed Description

The present invention will be described in further detail with reference to the following description of the drawings.

As shown in figure 2, the aerosol laser radar device for rapidly adjusting the optimal light intensity of the emitted light comprises a pyramid prism 1, a prism outer cover 2 and a support ring 5, wherein the prism outer cover 2 is covered on the pyramid prism 1 in an opening downward mode. As shown in fig. 3, the support ring 5 is a circular ring, the upper end face of the support ring is fixedly connected with two parallel connecting plates 4, the two end sides of the connecting plates 4 in the embodiment extend to form a connecting platform, the platform is provided with through holes, and the first screws 6 penetrate through the through holes to be fixedly connected with the support ring 5. The pyramid prism 1 is fixed in the prism outer cover. As shown in fig. 3, the prism housing 2 is offset to one side of the center line of the support ring, and as shown in fig. 4, the two side surfaces are fixedly connected with the left and right side surfaces of the connecting plate 4 through two left and right second screws 7. The lower end face of the support ring 5 is provided with a countersunk groove which is directly matched with the diameter of the shell at the top of the Cassegrain telescope. The effective diameter of the end face of the pyramid prism 1 is 2 times larger than the projection diameter of the plane reflector in the Cassegrain telescope in the horizontal plane and smaller than the effective diameter of the projection of the concave reflector of the Cassegrain telescope in the horizontal plane. The utility model discloses a prism, including pyramid prism 1, prism dustcoat 2, pyramid prism 1, pyramid prism 2, pyramid prism housing, pyramid prism, pyramid. Fig. 5 is a light path diagram after the installation of the present invention.

The utility model discloses rotate reflect meter around telescope center pin 21, observe whether the light intensity on blank or the white paper keeps strongest state always.

Claims (3)

1. Aerosol laser radar quick adjustment jets out device of the best light intensity of light, and characterized by the device includes pyramid prism (1), prism dustcoat (2) and support ring (5), support ring (5) up end links firmly connecting plate (4) of two parallels, pyramid prism (1) fix in prism dustcoat (2), prism dustcoat (2) bias in support ring (5) central line one side top, both sides face links firmly with connecting plate (4), the terminal surface is equipped with the countersunk head groove with the shell diameter adaptation at cassegrain telescope top under support ring (5).

2. The device for rapidly adjusting the optimal light intensity of the emitted light by the aerosol lidar according to claim 1, wherein the effective diameter of the end surface of the pyramid prism (1) is more than 2 times of the projection diameter of the plane reflector in the cassegrain telescope in the horizontal plane and less than the effective diameter of the projection of the concave reflector in the cassegrain telescope in the horizontal plane.

3. The aerosol lidar device for rapidly adjusting the optimal light intensity of the emitted light according to claim 1 or 2, wherein the bottom of the pyramid prism (1) is provided with a radially extending annular boss, the open end of the prism housing (2) is provided with a countersunk groove matched with the diameter of the annular boss of the pyramid prism (1), the boss at the bottom of the pyramid prism (1) is arranged in the countersunk groove at the open end of the prism housing (2), and a locking ring (3) in threaded connection with the inner wall of the countersunk groove of the prism housing is arranged below the pyramid prism (1) in the countersunk groove to fix the pyramid prism (1) in the prism housing (2).

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