Laser module focusing and current stabilizing mechanism

Abstract

The utility model relates to a laser module focusing and current stabilizing mechanism, which comprises a control circuit board, a laser module mounting core, a first laser module mounting tube seat, a focusing device and a potentiometer type displacement sensor, the first laser module mounting tube seat is mounted in the laser module mounting core, and the potentiometer type displacement sensor is electrically connected with the control circuit board. An electric brush push rod of the potentiometer type displacement sensor is connected with the focusing device, so that the position of an electric brush is adjusted while the focusing device performs focusing, it is ensured that the illuminance of emergent light of a light emitting diode LD of the first laser module in the first laser module installation tube base is stable, and then the illuminance of laser output by the laser module optical system is stable. The focusing device is simple in structure, does not occupy an axial space, is simple and convenient to operate, is rapid in focusing, and can realize the stability of illuminance especially under the condition of meeting the focusing condition.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of laser module focusing, stabilizing mechanism. BACKGROUND

[0002] The utility model discloses a kind of three-in-one laser light source, which is provided with the inner core with three kinds of laser module, i.e., light source fixing member, in the shell, three light sources are fixed on the same inner shell, and can be adjusted simultaneously during use, with small volume and portability, facilitating use. One particularly prominent design is the focusing device for the first laser module, as described in the specification of the patent Figure 2 As can be known from the corresponding textual description, the focusing device has a complex structure, a relatively large length, and occupies a large axial space. Since the focusing is achieved by rotating the focusing hand wheel to change the position of the laser tube, the focusing process is to convert the circumferential rotation into the forward and backward linear motion of the laser tube seat. Obviously, there is a motion loss, especially in the focusing speed. In addition, if the working power of the laser module is not adjusted adaptively during the focusing, the output light intensity after focusing may be insufficient or too bright, especially when the light intensity is insufficient, which seriously affects normal use. SUMMARY

[0003] The utility model aims at overcoming the defects of the existing laser sighting device, such as complex focusing structure, slow focusing speed and unstable light intensity caused by pure focusing.

[0004] To achieve the above-mentioned purpose, the utility model provides a kind of laser module focusing, stabilizing mechanism, including control circuit board, laser module installation core and the first laser module installation tube seat installed in the laser module installation core, still including focusing device and potentiometer type displacement sensor, the potentiometer type displacement sensor is electrically connected with the control circuit board;

[0005] The brush push rod of the potentiometer type displacement sensor is connected with the focusing device to adjust the position of the brush at the same time when the focusing device is focused, and the displacement signal caused by the focusing device is transmitted to the control circuit board. The control circuit board adjusts the working current of the light-emitting diode LD of the first laser module in the first laser module installation tube seat according to the displacement signal, so that the light intensity of the light-emitting diode LD is stable, and then the stability of the laser light intensity output by the laser module optical system is realized.

[0006] The aforementioned focusing device includes a pull rod, a sliding block, a connecting plate and a push block.

[0007] The sliding block is placed on one side of the first laser module installation tube seat and extends axially in parallel with the first laser module installation tube seat.

[0008] The plate surface of the connecting plate is perpendicular to the axial direction of the first laser module mounting pipe base, and one end of the connecting plate is fixedly connected with the rear end of the sliding block, and the other end of the connecting plate is connected with the rear end of the pull rod through a screw;

[0009] The front end of the pull rod is a spherical surface, is inserted into the rear end of the first laser module mounting pipe base, and is fixed in the rear end of the first laser module mounting pipe base through a first pressing ring.

[0010] The push block is arranged above the sliding block and is connected with the first screw hole in the top of the front end of the sliding block through a first screw penetrating through the thickness direction of the push block.

[0011] The utility model discloses the advantages are: simple structure, do not occupy axial space, easy operation, focus fast, especially in the working condition of meeting the focusing, can realize the stability of illumination. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a kind of laser module focusing, steady flow mechanism composition schematic diagram.

[0013] Figure 2 It is laser module installation core end surface schematic diagram.

[0014] Figure 3 It is Figure 2 A-A view of the.

[0015] Figure 4 It is a kind of laser module focusing, steady flow mechanism overall schematic diagram.

[0016] Figure 5 It is Figure 4 The bottom surface schematic diagram of the laser module focusing, steady flow mechanism overall shown in.

[0017] Figure 6 It is a kind of sight cutting view.

[0018] Figure 7 It is laser module focusing, steady flow mechanism explosion drawing.

[0019] Figure 8 It is a kind of sight explosion drawing.

[0020] MARKING OF DRAWINGS:

[0021] 1, laser module installation core; 2, first laser module installation pipe base; 3, potentiometer type displacement sensor; 4, brush push rod; 5, light emitting diode LD; 6, pull rod; 7, sliding block; 8, connecting plate; 9, dial block; 10, first compression ring; 11, first screw; 12, first screw hole; 13, limit gap; 14, oval hole; 15, limit pin shaft; 16, limit hole; 17, screw; 18, sliding potentiometer mounting seat; 19, battery compartment; 20, lens mounting cavity; 21, perforation; 22, assembly hole; 23, gasket; 24, sliding sheet; 25, opening; 26, round hole; 27, limit column. DETAILED DESCRIPTION

[0022] In order to further illustrate the technical means and effects taken by the utility model to achieve the predetermined purpose, the specific implementation, structural features and effects of the utility model will be described in detail below in combination with the drawings and examples.

[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "alignment", "overlap", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. The terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features; in the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specified.

[0024] In order to overcome the defects of complex focusing structure, slow focusing speed and unstable illumination caused by simple focusing of the existing laser sighting device, the embodiment provides a kind of Figure 1The shown laser module focusing and stabilizing mechanism includes a control circuit board (not shown in the figure), a laser module mounting core 1, a first laser module mounting tube base 2 mounted in the laser module mounting core 1, a focusing device, and a potentiometer type displacement sensor 3 electrically connected with the control circuit board. The brush push rod 4 of the potentiometer type displacement sensor 3 is connected with the focusing device to realize the adjustment of the brush position while the focusing device is focusing, and the displacement signal caused by the focusing device is transmitted to the control circuit board. According to the displacement signal, the control circuit board adjusts the working current of the light emitting diode LD 5 (or laser tube LD) of the first laser module in the first laser module mounting tube base 2, so that the luminous intensity of the light emitting diode LD 5 is stable. In this way, through the synchronous mechanical movement of the first laser module mounting tube base 2 and the brush push rod 4 of the potentiometer type displacement sensor 3 driven by the focusing device, combined with the design or connection of the specific circuit, the stability of the laser light luminous intensity output by the laser module optical system is ensured under the condition of meeting the working condition requirements of focusing.

[0025] In combination Figure 2 , 3 , 4, 5, 6, the focusing device includes a pull rod 6, a sliding block 7, a connecting plate 8, and a dial block 9. As can be clearly seen from Figure 4 or Figure 5 or Figure 6 , the sliding block 7 is placed on one side of the first laser module mounting tube base 2 and extends axially parallel to the first laser module mounting tube base 2. The surface of the connecting plate 8 is perpendicular to the axial direction of the first laser module mounting tube base 2, one end of the connecting plate 8 is fixedly connected with the rear end of the sliding block 7, and the other end of the connecting plate 8 is connected with the rear end of the pull rod 6 through a screw 17. As can be clearly seen from Figure 1 , the front end of the pull rod 6 is spherical, inserted into the rear end of the first laser module mounting tube base 2 shown in Figure 3 or Figure 6 , and fixed in the rear end of the first laser module mounting tube base 2 through the first pressing ring 10 shown in Figure 3 . As can be clearly seen from Figure 3 , the light emitting diode LD 5 is also sleeved in the cavity of the pull rod 6. The dial block 9 is placed above the sliding block 7 shown in Figure 1 or Figure 4 , and connected with the first screw hole 12 at the top of the front end of the sliding block 7 shown in Figure 7 through a first screw 11 penetrating the thickness direction of the dial block 9.

[0026] As can be clearly seen from Figure 8It can be seen that when the dial block 9 is assembled outside the housing of the sighting device, the sliding block 7, the first laser module mounting seat 2 and the like are assembled in the housing chamber of the sighting device. When the focusing device is assembled, a through hole 21 is formed in the thickness direction of the dial block 9. The first screw 11 passes through the through hole 21 and the assembly hole 22 on the housing of the sighting device from top to bottom and is connected with the first screw hole 12 on the top surface of the sliding block 7. In this way, the dial block 9 can be manually operated to drive the sliding block 7 to move back and forth along the axial direction of the first laser module mounting seat 2, so as to change the focal length.

[0027] In combination Figure 5 , Figure 7 It can be found that the bottom surface of the sliding block 7 is provided with a limiting notch 13, in which the brush push rod 4 is inserted, so as to drive the brush push rod 4 to move when the sliding block 7 moves back and forth, so as to transmit the displacement signal of the sliding block 7 to the control circuit board. The control circuit board adjusts the working current of the light-emitting diode LD5 according to the displacement signal, so that the luminous intensity of the light-emitting diode LD5 is stable. The luminous intensity of the sighting device is unchanged compared with the output light working condition after the focal length is changed, so as to realize the stability of the laser luminous intensity output by the laser module optical system. The specific circuit design is prior art, which will not be described here.

[0028] In combination Figure 1 , an elliptical hole 14 is formed in the side surface of the laser module mounting seat 1. A limiting pin 15 is inserted into the elliptical hole 14 and fixedly connected with the limiting hole 16 on the side wall of the first laser module mounting seat 2, so as to limit the axial movement distance range of the first laser module mounting seat 2.

[0029] Finally, by Figure 6 and Figure 8 It can be seen that the control circuit board involved in the above embodiments is powered by the battery 20 in the battery compartment 19. In order to facilitate wiring, the sliding potentiometer 3 is fixed at one end of the battery compartment 19, that is, at one end on the same side as the rear end of the first laser module mounting seat 2 in the present embodiment. This can make the structure of the sighting device compact and facilitate disassembly and assembly.

[0030] And by Figure 8 It can be seen that a sealing gasket 23 is installed at the assembly hole 22 between the bottom surface of the dial block 9 and the housing of the sighting device. In order to reduce the friction between the sliding block 7 and the housing of the sighting device when the sliding block 7 slides, a sliding sheet 24 is arranged on the top surface of the sliding block 7. A hole 25 is formed in the sliding sheet 24 corresponding to the first screw hole 12, so as to ensure that the first screw 11 can pass through normally. A circular hole 26 is formed in the other end of the sliding sheet 24 and is sleeved on the corresponding limiting column 27 on the top surface of the sliding block 7, so as to ensure that the sliding sheet 24 is stably clamped on the top surface of the sliding block 7.

Claims

1. A laser module focusing and stabilizing current mechanism, comprising a control circuit board, a laser module mounting core (1) and a first laser module mounting socket (2) mounted in the laser module mounting core (1), characterized in that: Also include focusing device and potentiometer displacement sensor (3), the potentiometer displacement sensor (3) is electrically connected with the control circuit board; The brush push rod (4) of the potentiometer displacement sensor (3) is connected with the focusing device to realize the adjustment of the brush position while the focusing device is focusing, and the displacement signal caused by the focusing device is transmitted to the control circuit board, and the control circuit board adjusts the working current of the light emitting diode LD (5) in the first laser module mounting tube (2) according to the displacement signal, so that the light intensity of the light emitting diode LD (5) is stable, and then the stability of the laser light intensity output by the laser module optical system is realized.

2. The laser module focusing and stabilizing current mechanism according to claim 1, characterized in that: The focusing device includes a pull rod (6), a sliding block (7), a connecting plate (8) and a dial block (9); The sliding block (7) is arranged on one side of the first laser module mounting tube (2) and extends axially parallel to the first laser module mounting tube (2); The surface of the connecting plate (8) is perpendicular to the axial direction of the first laser module mounting tube (2), one end of the connecting plate (8) is fixedly connected with the rear end of the sliding block (7), and the other end of the connecting plate (8) is connected with the rear end of the pull rod (6) through a screw (17); The front end of the pull rod (6) is spherical, inserted into the rear end of the first laser module mounting tube (2), and fixed in the rear end of the first laser module mounting tube (2) through a first pressing ring (10); The dial block (9) is arranged above the sliding block (7) and connected with the first screw hole (12) at the top of the front end of the sliding block (7) through a first screw (11) penetrating the thickness direction of the dial block (9).

3. The laser module focusing and stabilizing current mechanism according to claim 2, characterized in that: The rear end of the bottom surface of the sliding block (7) is provided with a limiting notch (13) for inserting the brush push rod (4), and the brush push rod (4) moves with the sliding block (7) when the sliding block (7) moves forward and backward, so as to transmit the displacement signal of the sliding block (7) to the control circuit board, and the control circuit board adjusts the working current of the light emitting diode LD (5) according to the displacement signal, so that the light intensity of the light emitting diode LD (5) is stable, and then the stability of the laser light intensity output by the laser module optical system is realized.

4. The laser module focusing and stabilizing current mechanism according to claim 1 or 2 or 3, characterized in that: An oval hole (14) is formed in the side surface of the laser module mounting core (1), a limiting pin shaft (15) is inserted into the oval hole (14), and is fixedly connected with the limiting hole or limiting notch (16) on the side wall of the first laser module mounting tube (2), so as to limit the axial movement distance range of the first laser module mounting tube (2).

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