Laser methane telemetering light machine assembly

Abstract

The utility model relates to the technical field of laser telemetering equipment, in particular to a laser methane telemetering optical machine assembly. According to the technical scheme, the device comprises a first shell and a second shell, the second shell is fixedly installed at one end of the first shell, a receiving lens is fixedly installed at one end of the first shell, a signal light laser and an indication laser are fixedly installed on the first shell, and a reflection sheet and a transmission sheet are fixedly installed in the first shell; a first power receiving end is fixedly installed at one end of the first shell, a reference gas chamber is arranged in the first shell, and methane gas is injected into the reference gas chamber. According to the utility model, the signal laser emits signal light, a part of the signal light is reflected into the reference gas chamber by the reflector plate, the laser wavelength is calibrated by the methane gas in the reference gas chamber, and the methane gas is combined to stabilize the characteristics of an absorption spectrum, enhance the signal stability and improve the signal wavelength accuracy; the detection sensitivity is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of laser telemetry equipment technology, and in particular to a laser methane telemetry optomechanical component. Background Technology

[0002] Laser telemetry is a technology that uses lasers to detect and measure distant targets. It obtains information such as the target's distance, speed, and angle by emitting a laser beam and then receiving the laser signals reflected or scattered by the target. Laser telemetry has advantages such as high accuracy, strong anti-interference capability, high resolution, and non-contact measurement, and has wide applications in military, aerospace, meteorology, environmental monitoring, and industrial inspection fields.

[0003] Existing telemetry optical mechanisms typically lack a laser wavelength reference calibration unit during actual telemetry processes, resulting in insufficient wavelength accuracy, poor signal stability, and reduced detection sensitivity. Therefore, this application proposes a laser-methane telemetry optical mechanism component capable of calibrating the laser wavelength using methane gas. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a laser methane telemetry optical mechanism that can calibrate the laser wavelength using methane gas.

[0005] The technical solution of this utility model is as follows: A laser methane telemetry optical engine assembly, comprising a first housing and a second housing, wherein the second housing is fixedly installed at one end of the first housing, and further comprising:

[0006] A receiving lens is fixedly installed at one end of a first housing. A signal laser and an indicator laser are fixedly installed on the first housing. A reflective sheet and a transmissive sheet are fixedly installed inside the first housing. A first power receiving terminal is fixedly installed at one end of the first housing.

[0007] A reference gas chamber is disposed inside the first housing. One end of the reference gas chamber is in contact with the first power receiving end, and the other end of the reference gas chamber is in contact with the transmission plate. Methane gas is injected into the reference gas chamber. A first through hole and a second through hole are drilled in the top of the reference gas chamber. Ultraviolet glue is injected into the first through hole and the second through hole.

[0008] Optionally, the signal laser includes a laser body and a flexible printed circuit board. The laser body is fixedly bonded to the inside of a first housing by thermally conductive adhesive, and one end of the flexible printed circuit board is electrically connected to the laser body.

[0009] Optionally, both the reflective sheet and the transmissive sheet are fixedly installed inside the first housing with adhesive, and the outer surfaces of both the reflective sheet and the transmissive sheet are covered with an antireflective film.

[0010] Optionally, the first power receiving end is fixedly bonded to the first housing with adhesive, and one end of the first power receiving end is inserted into the reference gas chamber.

[0011] Optionally, one end of the indicator laser is fixedly bonded to the first housing with adhesive. A laser cover plate and an indicator laser cover plate are fixedly installed on the first housing with screws. The laser cover plate covers the outside of the laser body, and the indicator laser cover plate covers the outside of the indicator laser.

[0012] Optionally, a power receiving end adjustment ring is fixedly installed at one end of the second housing, and a second power receiving end is movably installed on the power receiving end adjustment ring. The second power receiving end consists of a power receiving end body and a stray light filter. The power receiving end body is movably installed on the power receiving end adjustment ring, and the stray light filter is fixedly installed at one end of the power receiving end body that is inserted into the first housing.

[0013] Optionally, two circular holes are drilled at one end of the first housing, one of which is located on the side of the indicator laser and the other is located on the side of the reflector.

[0014] Optionally, a built-in conical cylinder is fixedly installed inside the second housing, and a rubber sealing ring is fixedly installed at the opening of the built-in conical cylinder near the second power receiving end, with the outer wall of the second power receiving end in close contact with the inner wall of the rubber sealing ring.

[0015] Compared with the prior art, this application includes at least one of the following beneficial technical effects: a signal laser emits a signal light, a portion of which is reflected by a reflector into a reference gas chamber. The laser wavelength is calibrated using methane gas in the reference gas chamber. Combined with the characteristic that methane gas can stably absorb the spectrum, the signal stability is enhanced, the accuracy of the signal wavelength is improved, and the detection sensitivity is effectively increased. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the first housing of this utility model;

[0018] Figure 3 This is a schematic diagram showing the location of the reference air chamber in this utility model;

[0019] Figure 4 This is a schematic diagram showing the connection between the second power receiving end and the power receiving end adjustment ring of this utility model;

[0020] Figure 5 This is a schematic diagram showing the positions of the first through hole and the second through hole of this utility model.

[0021] Figure 6 This is a schematic diagram of the internal structure of the second shell of this utility model;

[0022] Figure 7 This is a schematic diagram of the built-in conical cylinder structure of this utility model.

[0023] Reference numerals: 13, receiving lens;

[0024] 14. First housing; 141. First through hole; 142. Second through hole; 143. Reference chamber;

[0025] 15. Laser cover plate;

[0026] 16. Indicator laser cover plate;

[0027] 17. Reflective sheet;

[0028] 18. Transmitting film;

[0029] 19. Indicator laser;

[0030] 20. Signal laser; 201. Laser body; 202. Flexible printed circuit board;

[0031] 21. Second housing; 211. Internal conical cylinder; 212. Rubber sealing ring;

[0032] 22. Power receiving end regulating ring;

[0033] 23. Second power receiving terminal; 231. Power receiving terminal body; 232. Stray light filter;

[0034] 24. First power receiving end. Detailed Implementation

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] Example

[0037] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, the present invention proposes a laser methane telemetry optical assembly, comprising a first housing 14, a second housing 21 fixedly mounted to one end of the first housing 14 by screws, and a receiving lens 13 fixedly mounted to the end of the first housing 14 away from the second housing 21. The receiving lens 13 receives reflected light. A signal laser 20 and an indicator laser 19 are fixedly mounted on the first housing 14. The signal laser 20 emits laser light, and the indicator laser 19 emits reference light. The reference light passes through a circular hole drilled at the end of the first housing 14 and is emitted outward. The signal light and the reference light are parallel, and the reference light provides a stable spatial reference for the signal light. By comparing the changes in position, angle, and other parameters of the signal light and the reference light, it is possible to accurately determine whether the signal light is affected by external factors (such as atmospheric refraction, turbulence, etc.) during propagation, thereby correcting the measurement results and improving the accuracy of the measurement. A reflector 17 and a transmissive plate 18 are fixedly mounted inside the first housing 14. The reflector 17 reflects the signal light, and part of the reflected signal light passes through the transmissive plate 18 and enters the reference light. Inside the reference gas chamber 143, the aforementioned reference gas chamber 143 is disposed inside the first housing 14. A first power receiving terminal 24 is fixedly mounted on the first housing 14, and one end of the first power receiving terminal 24 is inserted into the reference gas chamber 143. The aforementioned transmissive sheet 18 covers the end of the reference gas chamber 143 away from the first power receiving terminal 24. A first through hole 141 and a second through hole 142 are drilled in the top of the reference gas chamber 143. Methane gas can be injected into the reference gas chamber 143 through the two through holes. After the methane gas injection is completed, the first through hole 141 and the second through hole 142 are sealed with ultraviolet glue. The system seals the holes to prevent light entering the reference chamber 143 from being reflected outwards through the through-hole structure. If methane gas leaks from the reference chamber 143 after prolonged use of the optomechanical assembly, the UV adhesive used to seal the first through-hole 141 and the second through-hole 142 can be scraped off, allowing for easy replenishment of methane gas into the reference chamber 143. After replenishment, the through-holes are sealed again with UV adhesive, resulting in low maintenance costs. The methane gas can be used to calibrate the reflected signal light, enhancing signal stability, improving signal wavelength accuracy, and effectively increasing detection sensitivity.

[0038] like Figures 2-3 As shown, the signal laser 20 consists of a laser body 201 and a flexible printed circuit board 202. The laser body 201 is fixedly bonded to the inside of the first housing 14 with thermally conductive adhesive, which not only ensures the firmness of the laser body 201 after installation, but also improves its heat dissipation effect. One end of the flexible printed circuit board 202 is fixed to the laser body 201 and electrically connected to it, and the other end of the flexible printed circuit board 202 is electrically connected to the back-end terminal, which facilitates parameter conversion of the received signal and makes recording convenient.

[0039] Furthermore, both the reflector 17 and the transmissor 18 are fixedly bonded to the inside of the first housing 14 with adhesive, which effectively improves their firmness after installation; the outer surfaces of both the reflector 17 and the transmissor 18 are covered with an anti-reflection film, which can improve the penetration of signal light waves.

[0040] Secondly, the first power receiving end 24 is fixedly bonded to the first housing 14 with glue to ensure the firmness of the first power receiving end 24 after installation. After the glue cures, it can seal the gap at the connection between the first power receiving end 24 and the reference gas chamber 143, thus ensuring the airtightness of the reference gas chamber 143.

[0041] like Figures 1-2 As shown, in order to improve the protection of the laser, a laser cover plate 15 and an indicator laser cover plate 16 are fixedly mounted on the first housing 14 with screws. The laser body 201 is located inside the laser cover plate 15, and the indicator laser 19 is located inside the indicator laser cover plate 16. This avoids physical damage to the laser from external objects and effectively improves the protection of the laser.

[0042] like Figures 3-4 As shown, a receiving end adjustment ring 22 is fixedly installed at one end of the second housing 21, and a second receiving end 23 is movably installed on the receiving end adjustment ring 22. The second receiving end 23 consists of a receiving end body 231 and a stray light filter 232. The stray light filter 232 is fixedly glued to one end of the receiving end body 231. The stray light filter 232 can filter out non-signal light, such as visible light and light emitted by the indicator laser 19. The receiving end body 231 is movably inserted into the receiving end adjustment ring 22 to ensure that the receiving end body 231 can be adjusted laterally, so as to facilitate the adjustment of the distance between the receiving end body 231 and the receiving lens 13, and ensure that the second receiving end 23 can receive the maximum signal light.

[0043] like Figure 6 and Figure 7 As shown, in order to prevent light leakage from reflected light, an internal conical cylinder 211 is fixedly installed inside the second housing 21. A rubber sealing ring 212 is fixedly installed at the opening of the internal conical cylinder 211 near the second power receiving end 21. During the extension and retraction adjustment of the second power receiving end 23, the outer wall of the second power receiving end 23 is in close contact with the inner wall of the rubber sealing ring 212, preventing reflected light from leaking out from the gap between the second housing 21 and the second power receiving end 21, effectively reducing the probability of light leakage from reflected light.

[0044] In this embodiment, a signal light is first emitted by the signal laser 20, and a reference light is emitted by the indicator laser 19. The signal light and the reference light are parallel, and the reference light provides a stable spatial reference for the signal light. By comparing the changes in the position, angle, and other parameters of the signal light and the reference light, it can be accurately determined whether the signal light is affected by external factors during propagation, thereby correcting the measurement results and improving the accuracy of the measurement. When the signal light passes through the reflector 17, part of the light is reflected to the transmissive plate 18. After passing through the transmissive plate 18, this part of the light enters the reference gas chamber 1. Within the reference chamber 143, the methane gas in the reference chamber 143 calibrates the portion of the signal light, and the first receiving end 24 transmits the received signal to the back-end terminal. A portion of the signal light passing through the reflector 17 is reflected upon contact with the target object, and some of the reflected light contacts the receiving lens 13. The receiving lens 13 focuses the light and concentrates it onto the second receiving end 23, which then transmits the received optical signal to the back-end terminal. The methane gas injected into the reference chamber 143 enhances signal stability, improves signal wavelength accuracy, and effectively increases detection sensitivity.

[0045] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A laser methane telemetry optical engine assembly, comprising a first housing (14) and a second housing (21), wherein the second housing (21) is fixedly mounted on one end of the first housing (14), characterized in that, It also includes: A receiving lens (13) is fixedly installed at one end of a first housing (14). A signal laser (20) and an indicator laser (19) are fixedly installed on the first housing (14). A reflector (17) and a transmissive sheet (18) are fixedly installed inside the first housing (14). A first power receiving terminal (24) is fixedly installed at one end of the first housing (14). A reference gas chamber (143) is disposed inside the first housing (14). One end of the reference gas chamber (143) is in contact with the first power receiving terminal (24), and the other end of the reference gas chamber (143) is in contact with the transmission plate (18). Methane gas is injected into the reference gas chamber (143). A first through hole (141) and a second through hole (142) are drilled on the top of the reference gas chamber (143). Ultraviolet glue is injected into the first through hole (141) and the second through hole (142).

2. The laser methane telemetry optomechanical assembly according to claim 1, characterized in that, The signal laser (20) includes a laser body (201) and a flexible printed circuit board (202). The laser body (201) is fixedly bonded to the inside of the first housing (14) by thermally conductive adhesive. One end of the flexible printed circuit board (202) is electrically connected to the laser body (201).

3. The laser methane telemetry optomechanical assembly according to claim 1, characterized in that, The reflective sheet (17) and the transmissive sheet (18) are both fixedly installed inside the first housing (14) with glue, and the outer surfaces of the reflective sheet (17) and the transmissive sheet (18) are covered with an anti-reflection film.

4. The laser methane telemetry optomechanical assembly according to claim 1, characterized in that, The first power receiving end (24) is fixedly bonded to the first housing (14) with glue, and one end of the first power receiving end (24) is inserted into the reference gas chamber (143).

5. The laser methane telemetry optomechanical assembly according to claim 2, characterized in that, One end of the indicator laser (19) is fixedly glued to the first housing (14). A laser cover plate (15) and an indicator laser cover plate (16) are fixedly installed on the first housing (14) by screws. The laser cover plate (15) covers the outside of the laser body (201), and the indicator laser cover plate (16) covers the outside of the indicator laser (19).

6. The laser methane telemetry optomechanical assembly according to claim 1, characterized in that, A power receiving end adjustment ring (22) is fixedly installed at one end of the second housing (21). A second power receiving end (23) is movably installed on the power receiving end adjustment ring (22). The second power receiving end (23) consists of a power receiving end body (231) and a stray light filter (232). The power receiving end body (231) is movably installed on the power receiving end adjustment ring (22). The stray light filter (232) is fixedly installed at one end of the power receiving end body (231) inserted into the first housing (14).

7. The laser methane telemetry optomechanical assembly according to claim 3, characterized in that, Two circular holes are drilled at one end of the first housing (14), one of which is located on one side of the indicator laser (19) and the other is located on one side of the reflector (17).

8. The laser methane telemetry optomechanical assembly according to claim 6, characterized in that, The second housing (21) has a built-in conical cylinder (211) fixedly installed inside. A rubber sealing ring (212) is fixedly installed at the opening of the built-in conical cylinder (211) near the second power receiving end (23). The outer wall of the second power receiving end (23) is in close contact with the inner wall of the rubber sealing ring (212).

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