Galvanometer scanning laser range finder

Abstract

The utility model relates to a galvanometer scanning laser range finder, which belongs to the technical field of laser range finders, and comprises a casing, and a galvanometer device, a laser transmitter, an objective lens, a fixed frame A, a fixed frame B, a mirror ring, a movable piece, a bolt C and a bolt D. The laser transmitter is fixed on the galvanometer device and is communicated with the galvanometer device through a light path; the objective lens is fixed in the shell; the fixing frame A and the fixing frame B are both fixed in the machine shell, the fixing frame A is provided with a mirror hole and an adjusting hole, and the fixing frame B is provided with a long-strip hole and a screw hole E; the mirror ring is detachably sleeved outside one end of the galvanometer and rolls in the mirror hole; the movable piece is fixed at the other end of the galvanometer device and is provided with a screw hole F; the bolt C is screwed into the screw hole E to be in contact with the movable piece; and the bolt D slidably penetrates through the long-strip-shaped hole to be screwed into the screw hole F. According to the utility model, the mirror ring is detachably sleeved outside one end of the galvanometer device, and then the movable piece is fixed at the other end of the galvanometer device, so that the swinging angle of the galvanometer device in the X-axis direction and the pitching angle of the galvanometer device in the Z-axis direction can be adjusted, and the objective lens target center can be aligned.

Description

Technical Field

[0001] This utility model relates to the field of laser rangefinder technology, and in particular to a galvanometer scanning laser rangefinder. Background Technology

[0002] The galvanometer scanning laser rangefinder mainly consists of a housing, a mounting frame, a galvanometer, a laser emitter, and an objective lens. The mounting frame, galvanometer, laser emitter, and objective lens are all located inside the housing. The mounting frame is fixed inside the housing; the galvanometer is fixed on the mounting frame; the laser emitter is fixed on the galvanometer and communicates with the optical path of the galvanometer; the objective lens is located on one side of the galvanometer and fixed on the mounting frame. In practical applications, the galvanometer is first used to deflect the laser beam emitted by the laser emitter to expand the laser scanning range, and then the objective lens is used to display the data of the target being hit.

[0003] Currently, the machining precision of the housing, mounting bracket, galvanometer, laser emitter, and objective lens is limited. Glue is needed to assist in bonding the screws at the locking points to improve fastening accuracy. However, under extremely complex conditions or after being subjected to a certain degree of external impact, the glue at the screw locking points may shrink, causing the locking screws between the housing, mounting bracket, galvanometer, laser emitter, and objective lens to loosen. This results in unstable laser beam emission angles after the galvanometer deflects, leading to significant errors from angle calculations, deviation from the objective lens target center, and affecting scanning accuracy.

[0004] Therefore, how to design a galvanometer scanning laser rangefinder that is simple in structure, easy to operate, has a firm connection, is not easy to loosen, and can be adjusted at multiple angles is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This invention provides a galvanometer scanning laser rangefinder, which solves the technical problem of the laser beam deviating from the objective lens target center after the galvanometer is deflected in existing galvanometer scanning laser rangefinders.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a galvanometer scanning laser rangefinder, comprising: a housing and a galvanometer, a laser emitter, an objective lens, a mounting bracket A, a mounting bracket B, a mirror ring, a moving part, bolts C and D located inside the housing.

[0007] The sagittal axis of the galvanometer is the X-axis, the coronal axis is the Y-axis, and the vertical axis is the Z-axis; the laser emitter is fixed on the galvanometer and communicates with the optical path of the galvanometer; the objective lens is located on one side of the galvanometer corresponding to the Z-axis direction and is fixed inside the housing; the mounting bracket A and the mounting bracket B are located at both ends of the galvanometer corresponding to the Y-axis direction and are both fixed inside the housing; the mounting bracket A has a mirror hole arranged along the Y-axis direction and the inner surface of the mirror hole is an inwardly concave arc surface arranged along the axial direction; the mounting bracket B has an adjustment hole arranged along the Y-axis direction and also has an elongated hole and a screw hole E arranged along the X-axis direction and communicating with the adjustment hole;

[0008] The mirror ring is detachably sleeved on one end of the galvanometer and its outer ring surface is an outwardly convex arc surface arranged along the axial direction. The outwardly convex arc surface rolls in the inwardly concave arc surface. The moving part is fixed to the other end of the galvanometer and has a screw hole F arranged along the Z-axis direction and opposite to the elongated hole.

[0009] The bolt C is screwed into the screw hole E and contacts the moving part, while the bolt D slides through the elongated hole and is screwed into the screw hole F to adjust the swing angle of the galvanometer in the X-axis direction and the pitch angle in the Z-axis direction, so that the galvanometer is aligned with the objective lens.

[0010] The beneficial effects of this utility model are: it improves the structure of traditional galvanometer scanning laser rangefinders. First, the mirror ring is detachably sleeved on one end of the galvanometer, and then the moving part is fixed on the other end of the galvanometer. Since the outer convex arc surface of the mirror ring rolls in the inner concave arc surface of the fixed frame mirror hole, and since the X-axis bolt is screwed into the screw hole A and contacts the moving part, and the Z-axis bolt slides through the elongated hole and is screwed into the screw hole B, the connection point where the outer convex arc surface and the inner concave arc surface roll together can be used as the origin to adjust the swing angle of the galvanometer in the X-axis direction and the pitch angle in the Z-axis direction, so as to align the objective lens target center, thereby improving the adjustment efficiency and adjustment accuracy.

[0011] Based on the above technical solution, the present invention can be further improved as follows.

[0012] Furthermore, the retaining frame A includes an outer retaining ring and an inner retaining ring. The outer retaining ring is arranged along the Y-axis direction and its outer ring wall is fixed inside the housing. The inner retaining ring is detachably inserted into the outer retaining ring. The mirror hole is the inner ring hole of the inner retaining ring.

[0013] Furthermore, it also includes a clamping ring, a locking ring, and multiple locking bolts. The clamping ring, the locking ring, and the multiple locking bolts are all located inside the housing. The outer retaining ring has multiple circumferentially spaced screw holes G at one end corresponding to the galvanometer. The clamping ring is slidably sleeved on the outside of the mirror ring and extends into the outer retaining ring. The end of the clamping ring extending into the outer retaining ring can contact the inner retaining ring. The locking ring is located on the side of the clamping ring corresponding to the galvanometer, and its ring wall has multiple circumferentially arranged screw holes H, which are respectively arranged opposite to the multiple screw holes G. The multiple locking bolts are respectively screwed into the oppositely arranged screw holes G and screw holes H in sequence to push the locking ring to squeeze the clamping ring, so that the clamping ring slides outside the mirror ring, elastically opens the clamping ring, and holds the mirror ring tightly.

[0014] The further beneficial effect of the above is that the clamping ring is slidably sleeved on the outside of the mirror ring. When the locking ring pushes the clamping ring to advance into the outer fixed ring, since the outer ring surface of the mirror ring is an outwardly convex arc surface arranged along the axial direction, the outwardly convex arc surface will elastically open the clamping ring, so that the clamping ring hugs the mirror ring and locks the mirror ring in a fixed position.

[0015] Furthermore, the galvanometer includes a galvanometer housing, an entrance mirror, an exit mirror, a relay mirror, and a MEMS module. The galvanometer housing is located between the mounting frame A and the mounting frame B, with an exit aperture at one end corresponding to the mounting frame A and an entrance aperture at its top end corresponding to the Z-axis direction. An optical path communicating with the entrance aperture and the exit aperture is provided inside the galvanometer housing. The entrance mirror is fixed at the entrance aperture; the exit mirror is fixed at the exit aperture; the relay mirror and the MEMS module are spaced apart within the optical path and fixed at intervals within the galvanometer housing; the entrance mirror, the relay mirror, the MEMS module, and the exit mirror have interconnected optical paths; a mirror ring is detachably sleeved on one end of the galvanometer housing; a moving element is fixed at the other end of the galvanometer; and the objective lens is located on one side of the galvanometer housing corresponding to the Z-axis direction.

[0016] Furthermore, the laser emitter includes a laser emitting housing and a diode. The laser emitting housing is fixed on the galvanometer housing and has a laser emitting hole arranged opposite to the light inlet hole. The diode is fixed inside the laser emitting housing corresponding to the laser emitting hole.

[0017] Furthermore, the objective lens includes an objective lens housing and multiple lens elements. The objective lens housing is located on the side of the galvanometer housing corresponding to the Z-axis direction and is fixed inside the housing. The objective lens housing has an observation channel that extends through both ends. The multiple lens elements are spaced apart within the observation channel and are all fixed to the objective lens housing.

[0018] Furthermore, it also includes a storage battery, which is fixed inside the housing; the galvanometer and the laser emitter are both electrically connected to the storage battery. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a galvanometer scanning laser rangefinder according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of a galvanometer scanning laser rangefinder according to the present invention;

[0021] Figure 3 This is a side view of the structure of a galvanometer scanning laser rangefinder after the housing has been removed.

[0022] Figure 4 for Figure 3 Internal structure diagram;

[0023] Figure 5 This is a right-side structural schematic diagram of the laser emitter, frame A, frame B, moving part, and bolt D in a galvanometer scanning laser rangefinder according to the present invention.

[0024] Figure 6 This is a bottom view structural diagram of the laser emitter, frame A, frame B, moving part and bolt D in a galvanometer scanning laser rangefinder of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Housing; 2. Galvanometer; 21. Galvanometer housing; 22. Receiver lens; 23. Exit lens; 24. Relay lens; 25. MEMS module; 3. Laser emitter; 31. Laser emitter housing; 32. Diode; 4. Objective lens; 41. Objective lens housing; 42. Lens; 5. Mount A; 51. Outer retaining ring; 52. Inner retaining ring; 521. Lens hole; 53. Pressure ring; 54. Locking ring; 55. Locking bolt; 6. Mount B; 61. Adjustment hole; 62. Long strip hole; 63. Screw hole E; 7. Mirror ring; 8. Moving part; 81. Screw hole F; 9. Bolt C; 10. Bolt D; 11. Battery. Detailed Implementation

[0027] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0028] like Figure 1 and Figure 2As shown, a galvanometer scanning laser rangefinder includes: a housing 1 and a galvanometer 2, a laser emitter 3, an objective lens 4, a mounting bracket A5, a mounting bracket B6, a mirror ring 7, a moving part 8, a bolt C9, and a bolt D10 located inside the housing 1.

[0029] The sagittal axis of the galvanometer 2 is the X-axis, the coronal axis is the Y-axis, and the vertical axis is the Z-axis; the laser emitter 3 is fixed on the galvanometer 2 and communicates with the optical path of the galvanometer 2; the objective lens 4 is located on one side of the galvanometer 2 corresponding to the Z-axis direction and is fixed inside the housing 1; the brackets A5 and B6 are located at both ends of the galvanometer 2 corresponding to the Y-axis direction and are both fixed inside the housing 1. The bracket A5 is provided with a mirror hole 521 arranged along the Y-axis direction and the inner surface of the mirror hole 521 is an inwardly concave arc surface arranged along the axial direction. The bracket B6 is provided with an adjustment hole 61 arranged along the Y-axis direction and also has an elongated hole 62 arranged along the X-axis direction and communicating with the adjustment hole 61 and a screw hole E63.

[0030] The mirror ring 7 is detachably sleeved on one end of the galvanometer 2 and its outer ring surface is an outwardly convex arc surface arranged along the axial direction. The outwardly convex arc surface rolls in the inwardly concave arc surface. The moving part 8 is fixed on the other end of the galvanometer 2 and has a screw hole F81 arranged along the Z-axis direction and opposite to the elongated hole 62.

[0031] Bolt C9 is screwed into screw hole E63 and contacts moving part 8, while bolt D10 slides through elongated hole 62 and is screwed into screw hole F81 to adjust the swing angle of galvanometer 2 in the X-axis direction and the pitch angle in the Z-axis direction, so that galvanometer 2 is aligned with objective lens 4.

[0032] like Figure 2 As shown, in some specific embodiments, the retainer A5 may include an outer retaining ring 51 and an inner retaining ring 52. The outer retaining ring 51 is arranged along the Y-axis and its outer ring wall is fixed inside the housing 1. The inner retaining ring 52 is detachably inserted into the outer retaining ring 51. The mirror hole 521 is the inner ring hole of the inner retaining ring 52.

[0033] like Figure 2 As shown, in some specific embodiments, the mounting bracket A5 may further include a clamping ring 53, a locking ring 54, and multiple locking bolts 55. The clamping ring 53, the locking ring 54, and the multiple locking bolts 55 are all located inside the housing 1. The outer mounting ring 51 has multiple circumferentially spaced screw holes G at one end corresponding to the galvanometer 2. The clamping ring 53 is slidably sleeved on the outside of the mirror ring 7 and extends into the outer mounting ring 51. The end of the clamping ring 53 extending into the outer mounting ring 51 can contact the inner mounting ring 52. The locking ring 54 is located on the side of the clamping ring 53 corresponding to the galvanometer 2, and its ring wall has multiple circumferentially arranged screw holes H, which are respectively arranged opposite to the multiple screw holes G. The multiple locking bolts 55 are respectively screwed into the oppositely arranged screw holes G and screw holes H in sequence to push the locking ring 54 to squeeze the clamping ring 53, so that the clamping ring 53 slides outside the mirror ring 7, elastically opens the clamping ring 53, and holds the mirror ring 7 tightly.

[0034] like Figure 2 As shown, in some specific embodiments, the galvanometer 2 may include a galvanometer housing 21, an inlet mirror 22, an outlet mirror 23, a relay mirror 24, and a MEMS module 25. The galvanometer housing 21 is located between the frame A5 and the frame B6, and has an outlet aperture at one end corresponding to the frame A5 and an inlet aperture at its top end corresponding to the Z-axis direction. It has an internal optical path that communicates with the inlet aperture and the outlet aperture. The inlet mirror 22 is fixed at the inlet aperture. The outlet mirror 23 is fixed at the outlet aperture. The relay mirror 24 and the MEMS module 25 are spaced apart within the optical path and fixed at intervals within the galvanometer housing 21. The optical paths of the inlet mirror 22, the relay mirror 24, the MEMS module 25, and the outlet mirror 23 are interconnected. The mirror ring 7 is detachably sleeved on one end of the galvanometer housing 21. The moving part 8 is fixed at the other end of the galvanometer. The objective lens 4 is located on one side of the galvanometer housing 21 corresponding to the Z-axis direction.

[0035] like Figure 4 As shown, in some specific embodiments, the laser emitter 3 may include a laser emitting housing 31 and a diode 32. The laser emitting housing 31 is fixed on the galvanometer housing 21 and has a laser emitting hole arranged opposite to the light inlet hole. The diode 32 is fixed inside the laser emitting housing 31 corresponding to the laser emitting hole.

[0036] like Figure 2 and Figure 4 As shown, in some specific embodiments, the objective lens 4 includes an objective lens housing 41 and multiple lens elements 42. The objective lens housing 41 is located on the side of the galvanometer housing 21 corresponding to the Z-axis direction and is fixed inside the housing 1. The objective lens housing 41 has an observation channel that runs through both ends. The multiple lens elements 42 are spaced apart in the observation channel and are all fixed on the objective lens housing 41.

[0037] like Figure 2 As shown, in some specific embodiments, a storage battery 11 is also included, which is fixed inside the housing 1; the galvanometer 2 and the laser emitter 3 are both electrically connected to the storage battery 11.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A galvanometer scanning laser rangefinder, characterized in that, include: The housing (1) and the galvanometer (2), laser emitter (3), objective lens (4), frame A (5), frame B (6), mirror ring (7), moving part (8), bolt C (9) and bolt D (10) located inside the housing (1). The sagittal axis of the galvanometer (2) is the X-axis, the coronal axis is the Y-axis, and the vertical axis is the Z-axis; the laser emitter (3) is fixed on the galvanometer (2) and communicates with the optical path of the galvanometer (2); the objective lens (4) is located on one side of the galvanometer (2) corresponding to the Z-axis direction and is fixed inside the housing (1); the bracket A (5) and the bracket B (6) are located at both ends of the galvanometer (2) corresponding to the Y-axis direction and are both fixed inside the housing (1); the bracket A (5) is provided with a mirror hole (521) arranged along the Y-axis direction and the inner surface of the mirror hole (521) is an inwardly concave arc surface arranged along the axial direction; the bracket B (6) is provided with an adjustment hole (61) arranged along the Y-axis direction and also has an elongated hole (62) arranged along the X-axis direction and communicating with the adjustment hole (61) and a screw hole E (63). The mirror ring (7) is detachably sleeved on one end of the galvanometer (2) and its outer ring surface is an outwardly convex arc surface arranged along the axial direction. The outwardly convex arc surface rolls in the inwardly concave arc surface. The moving part (8) is fixed to the other end of the galvanometer (2) and has a screw hole F (81) arranged along the Z-axis direction and opposite to the elongated hole (62). The bolt C (9) is screwed into the screw hole E (63) and contacts the moving part (8), and the bolt D (10) slides through the elongated hole (62) and is screwed into the screw hole F (81) to adjust the swing angle of the galvanometer (2) in the X-axis direction and the pitch angle in the Z-axis direction, so that the galvanometer (2) is aligned with the objective lens (4).

2. The galvanometer scanning laser rangefinder according to claim 1, characterized in that, The mounting bracket A (5) includes an outer mounting ring (51) and an inner mounting ring (52). The outer mounting ring (51) is arranged along the Y-axis and its outer ring wall is fixed inside the housing (1). The inner mounting ring (52) is detachably inserted into the outer mounting ring (51). The mirror hole (521) is the inner ring hole of the inner mounting ring (52).

3. The galvanometer scanning laser rangefinder according to claim 2, characterized in that, The mounting frame A (5) also includes a clamping ring (53), a locking ring (54), and multiple locking bolts (55). The clamping ring (53), the locking ring (54), and the multiple locking bolts (55) are all located inside the housing (1). The outer mounting ring (51) has multiple circumferentially spaced screw holes G at one end corresponding to the galvanometer (2). The clamping ring (53) is slidably sleeved on the outside of the mirror ring (7) and extends into the outer mounting ring (51). The end of the clamping ring (53) extending into the outer mounting ring (51) can be connected to the inner mounting ring. (52) Contact; The locking ring (54) is located on the side of the clamping ring (53) corresponding to the galvanometer (2) and its ring wall is provided with a plurality of screw holes H arranged in the circumferential direction. The plurality of screw holes H are respectively arranged opposite to the plurality of screw holes G; The plurality of locking bolts (55) are respectively screwed into the screw holes G and the screw holes H arranged opposite to each other in sequence, so as to push the locking ring (54) to squeeze the clamping ring (53), so that the clamping ring (53) slides outside the mirror ring (7), elastically opens the clamping ring (53), and hugs the mirror ring (7).

4. The galvanometer scanning laser rangefinder according to claim 1, characterized in that, The galvanometer (2) includes a galvanometer housing (21), an inlet mirror (22), an outlet mirror (23), a transfer mirror (24), and a MEMS module (25). The galvanometer housing (21) is located between the frame A (5) and the frame B (6) and has an outlet hole at one end corresponding to the frame A (5) and an inlet hole at its top end corresponding to the Z-axis direction. It has an internal optical path communicating with the inlet hole and the outlet hole. The inlet mirror (22) is fixed at the inlet hole. The outlet mirror (23) is fixed at the... At the light exit hole; the relay mirror (24) and the MEMS module (25) are spaced apart within the optical path and fixed at intervals within the galvanometer housing (21); the light entrance mirror (22), the relay mirror (24), the MEMS module (25) and the light exit mirror (23) are connected in the optical path; the mirror ring (7) is detachably sleeved on one end of the galvanometer housing (21); the moving part (8) is fixed at the other end of the galvanometer; the objective lens (4) is located on the side of the galvanometer housing (21) corresponding to the Z-axis direction.

5. A galvanometer scanning laser rangefinder according to claim 4, characterized in that, The laser emitter (3) includes a laser emitting shell (31) and a diode (32). The laser emitting shell (31) is fixed on the galvanometer shell (21) and has a laser emitting hole arranged opposite to the light inlet hole. The diode (32) is fixed inside the laser emitting shell (31) corresponding to the laser emitting hole.

6. A galvanometer scanning laser rangefinder according to claim 4, characterized in that, The objective lens (4) includes an objective lens housing (41) and multiple lens elements (42). The objective lens housing (41) is located on the side of the galvanometer housing (21) corresponding to the Z-axis direction and is fixed inside the housing (1). The objective lens housing (41) has an observation channel that runs through both ends. The multiple lens elements (42) are spaced apart in the observation channel and are all fixed on the objective lens housing (41).

7. A galvanometer scanning laser rangefinder according to claim 1, characterized in that, It also includes a storage battery (11), which is fixed inside the housing (1); the galvanometer (2) and the laser emitter (3) are both electrically connected to the storage battery (11).

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