Laser range finder capable of being installed and adjusted at high precision

Abstract

A laser range finder capable of high-precision adjustment comprises an emission lens, an emission reducing sleeve, an emission light source, a receiving lens and a detector assembly, the emission lens and the emission light source are installed at the two ends of the emission reducing sleeve in the axial direction respectively, and the emission light source can emit range finding laser to a target through the emission lens; the receiving lens can receive laser echoes reflected by a target, and the detector assembly calculates the distance of the target according to the laser echoes. Two parallel positioning holes are formed in the side face of the transmitting reducing sleeve, two cylindrical pins matched with the positioning holes are arranged on the side face of the receiving lens, and the transmitting lens assembly and the receiving lens assembly are oppositely installed and fixed in the mode that the two cylindrical pins stretch into the positioning holes respectively. And the two positioning screws are respectively pressed on the positioning surfaces of the side walls of the two cylindrical pins, so that firm connection is ensured, the relative positions of the transmitting lens and the receiving lens can be accurately ensured, the adjustment precision of the laser range finder is improved, and the accuracy of a ranging result is further ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser ranging equipment field especially relates to a laser range finder of high precision equipment. BACKGROUND

[0002] Laser distance sensor, also called laser range finder, is an instrument for accurately measuring the distance of target, and has the advantages of simple operation, high measurement precision, long action distance and strong anti-interference ability, and is widely used in military and civilian fields. The existing laser range finder mainly comprises a transmitting lens, a transmitting light source, a receiving lens and a detector assembly, the transmitting light source emits ranging laser to the target through the transmitting lens, the receiving lens receives the laser echo reflected by the target, and the detector assembly calculates the distance of the target according to the laser echo. In actual use, the transmitting lens and the transmitting light source are usually connected along the axial direction, and the receiving lens and the detector assembly are also connected along the axial direction. However, the relative position of the transmitting lens and the receiving lens needs to be ensured finally, but the existing laser range finder has insufficient equipment precision, which leads to errors in the final ranging result. SUMMARY

[0003] The utility model aims at providing a laser range finder of high precision equipment, which can improve the equipment precision of the laser range finder.

[0004] The utility model provides a laser range finder of high precision equipment, which comprises a transmitting lens, a transmitting adapter sleeve, a transmitting light source, a receiving lens and a detector assembly. The transmitting lens and the transmitting light source are respectively installed at the two ends of the transmitting adapter sleeve along the axial direction. The transmitting light source can emit ranging laser to the target through the transmitting lens. The receiving lens can receive the laser echo reflected by the target. The receiving lens is located on the side of the transmitting lens and the transmitting adapter sleeve along the radial direction. The detector assembly is located on the side of the transmitting light source along the radial direction. The detector assembly is connected with the end of the receiving lens along the axial direction, so as to calculate the distance of the target according to the laser echo. The side of the transmitting adapter sleeve facing the receiving lens is provided with two mutually parallel positioning holes. The side of the receiving lens facing the transmitting adapter sleeve is provided with two cylindrical pins matched with the positioning holes. The two cylindrical pins are respectively inserted into the two positioning holes along the axial direction. Two positioning screws are further screwed on the transmitting adapter sleeve. The positioning screws are perpendicular to the cylindrical pins. The ends of the two positioning screws are respectively radially penetrated into the side walls of the two positioning holes. The ends of the two positioning screws are respectively pressed on the positioning surfaces of the side walls of the two cylindrical pins, so as to limit the cylindrical pins from separating from the positioning holes.

[0005] Preferably, the outer sides of the transmitting lens and the receiving lens are matched with lens outer frames.

[0006] Preferably, the axes of the two positioning screws are arranged to coincide, and the axial directions of the positioning screws are perpendicular to the length directions of the transmitting adapter sleeve and the receiving lens.

[0007] According to the above technical scheme, the laser range finder with high-precision assembly and adjustment has the following beneficial effects:

[0008] The two cylindrical pins are respectively inserted into the positioning holes to relatively fix the transmitting lens assembly and the receiving lens assembly, and the two positioning screws are respectively pressed on the positioning surfaces of the side walls of the two cylindrical pins to ensure firm connection. The connection mode of the cylindrical pin and the positioning hole has very high precision, the machining precision of the cylindrical pin can reach 0.005 mm, and the relative positions of the transmitting lens and the receiving lens can be finally accurately ensured, the assembly and adjustment precision of the laser range finder is improved, and the accuracy of the ranging result is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a principle block diagram of the laser range finder;

[0010] Figure 2 It is a schematic view of the laser range finder;

[0011] Figure 3 It is a sectional view of the laser range finder.

[0012] Marked in the figure: 1, transmitting lens, 2, transmitting adapter sleeve, 3, transmitting light source, 4, receiving lens, 5, detector assembly, 6, lens outer frame, 7, positioning screw, 8, cylindrical pin, 9, positioning surface. DETAILED DESCRIPTION

[0013] Referring to the drawings, the specific implementation manner is as follows:

[0014] As Figures 1-2 shown, a laser range finder with high-precision assembly and adjustment comprises a transmitting lens 1, a transmitting adapter sleeve 2, a transmitting light source 3, a receiving lens 4 and a detector assembly 5, the transmitting lens 1 and the transmitting light source 3 are respectively installed at two ends of the transmitting adapter sleeve 2 along the axial direction, the transmitting light source 3 can emit ranging laser to a target through the transmitting lens 1, the receiving lens 4 can receive laser echo reflected by the target, the receiving lens 4 is located at a side of the transmitting lens 1 and the transmitting adapter sleeve 2 along the radial direction, the detector assembly 5 is located at a side of the transmitting light source 3 along the radial direction, and the detector assembly 5 is connected with an end of the receiving lens 4 along the axial direction, so that the detector assembly 5 can calculate the distance of the target according to the laser echo.

[0015] As Figures 2-3As shown, the side of the transmitting adapter sleeve 2 facing the receiving lens 4 is provided with two mutually parallel positioning holes, and the side of the receiving lens 4 facing the transmitting adapter sleeve 2 is provided with two cylindrical pins 8 matching the positioning holes, the two cylindrical pins 8 respectively extend into the two positioning holes along the axial direction, and the transmitting adapter sleeve 2 is further provided with two positioning screws 7, the positioning screws 7 are perpendicular to the cylindrical pins 8, the ends of the two positioning screws 7 respectively penetrate the side walls of the two positioning holes along the radial direction, and the ends of the two positioning screws 7 are respectively pressed on the positioning surfaces 9 of the side walls of the two cylindrical pins 8, so as to limit the cylindrical pins 8 from being separated from the positioning holes.

[0016] In this embodiment, the relative mounting and fixing of the transmitting lens assembly and the receiving lens assembly are achieved by the way that the two cylindrical pins 8 respectively extend into the positioning holes, and the two positioning screws 7 are respectively pressed on the positioning surfaces 9 of the side walls of the two cylindrical pins 8, the axes of the two positioning screws 7 are coincidently arranged, the axial direction of the positioning screws 7 is perpendicular to the length direction of the transmitting adapter sleeve 2 and the receiving lens 4, and the connection is firm. The way that the cylindrical pins 8 and the positioning holes are connected has high precision, the machining precision of the cylindrical pins 8 can reach 0.005 mm, and finally through the cooperation of the lens outer frame 6 mounted on the outside of the transmitting lens 1 and the receiving lens 4, the relative positions of the transmitting lens 1 and the receiving lens 4 can be accurately ensured, the precise adjustment of the laser range finder is completed, and the accuracy of the ranging result is ensured.

Claims

1. A laser rangefinder capable of high-precision assembly and adjustment, characterized in that: The application relates to a laser ranging device, which comprises a transmitting lens (1), a transmitting adapter sleeve (2), a transmitting light source (3), a receiving lens (4) and a detector assembly (5), the transmitting lens (1) and the transmitting light source (3) are respectively arranged at two ends of the transmitting adapter sleeve (2) along the axial direction, the transmitting light source (3) can emit ranging laser to a target through the transmitting lens (1), the receiving lens (4) can receive the laser echo reflected by the target, the receiving lens (4) is arranged on the side of the transmitting lens (1) and the transmitting adapter sleeve (2) along the radial direction, the detector assembly (5) is arranged on the side of the transmitting light source (3) along the radial direction, the detector assembly (5) is connected with one end of the receiving lens (4) along the axial direction, so that the detector assembly (5) can calculate the distance of the target according to the laser echo, the side of the transmitting adapter sleeve (2) facing the receiving lens (4) is provided with two parallel positioning holes, the side of the receiving lens (4) facing the transmitting adapter sleeve (2) is provided with two cylindrical pins (8) matched with the positioning holes, the two cylindrical pins (8) respectively extend into the two positioning holes along the axial direction, two positioning screws (7) are further screwed on the transmitting adapter sleeve (2), the positioning screws (7) are perpendicular to the cylindrical pins (8), the ends of the two positioning screws (7) respectively penetrate the side walls of the two positioning holes along the radial direction, and the ends of the two positioning screws (7) are respectively pressed on the positioning faces (9) of the side walls of the two cylindrical pins (8), so as to limit the cylindrical pins (8) from being separated from the positioning holes.

2. The laser range finder capable of high-precision adjustment according to claim 1, characterized in that: The outer sides of the transmitting lens (1) and the receiving lens (4) are provided with a lens outer frame (6).

3. The laser range finder capable of high-precision adjustment according to claim 1, characterized in that: The axes of the two positioning screws (7) are arranged in coincidence, and the axial direction of the positioning screws (7) is perpendicular to the length direction of the transmitting adapter sleeve (2) and the receiving lens (4).

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