Zoom laser irradiation module

Abstract

The utility model discloses a zoom laser irradiation module, which comprises a barrel shell, a lens assembly and a light source assembly, the lens assembly is fixed at a first port of the barrel shell, the light source assembly is fixedly arranged in the barrel shell, and a certain distance is reserved between a light source of the light source assembly and a zoom plano-convex lens of the lens assembly. The zoom laser irradiation module further comprises a zoom mechanism which is movably arranged on the barrel shell and provided with a driving part and a focus-adjustable lens part which is connected with the driving part and located between the zoom plano-convex lens and the light source. And the focus-adjustable lens part can be driven to move in an area between the zoom plano-convex lens and the light source. According to the zoom laser irradiation module, the zoom mechanism is in threaded connection with the cylindrical shell, so that the focusable lens part can move in the movable cavity, the cost is saved, and the focusing is accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a laser module, concretely relates to a zoom laser irradiation module. BACKGROUND

[0002] Semiconductor diode laser is the most practical and important class of laser, it is small, long life.

[0003] Laser module preparation process needs to focus on the laser, there is a big astigmatism, so through a single lens to realize the focusing after will make the slow axis divergence angle is bigger, in the case of higher collimation or smaller focusing spot is difficult to use.

[0004] Prior art, laser module focusing mode has push-pull type focusing, buckle type focusing, adjusting hole position focusing, these several focusing modes have the following defects:

[0005] 1. Push-pull type focusing involves electric drive, through the micro motor drive pull rod drives the movable lens to move, this kind of focusing structure is complex, still need to develop control end, high cost.

[0006] 2. The structure of buckle type focusing and adjusting hole position focusing has low focusing precision in the application process.

[0007] Therefore, it is necessary to improve the existing laser module focusing structure. INVENTION CONTENTS

[0008] In view of the deficiencies in the prior art, the utility model wants to solve the technical problem to provide a zoom laser irradiation module, the purpose of designing the zoom laser irradiation module is: one is to reduce the cost, two is to adjust the focal length precision through thread progression or retrogression.

[0009] To solve the above technical problems, the utility model realizes through the following scheme: a zoom laser irradiation module of the utility model, including cylinder shell, lens assembly and light source assembly, the lens assembly is fixed in the first port of the cylinder shell, the light source assembly is fixedly arranged in the cylinder shell and is spaced apart from the zoom plano-convex lens between the light source and the lens assembly, the zoom laser irradiation module further includes a zoom mechanism, the zoom mechanism is movably arranged in the cylinder shell, and the zoom mechanism is provided with a driving part and an adjustable focusing lens part connected with the driving part and located between the zoom plano-convex lens and the light source, the adjustable focusing lens part can be driven to move in the area between the zoom plano-convex lens and the light source.

[0010] Further, the light source assembly includes a zoom LD seat, a light source;

[0011] The light source is fixed to the first end of the zoom LD seat;

[0012] The second end of the zoom LD seat is fixed with the lens assembly, and an active cavity is formed between the zoom LD seat and the lens assembly. The active cavity is open on both sides and has a gap on both sides to the second port of the barrel.

[0013] Further, the barrel has an internal thread in the second port.

[0014] Further, the driving part comprises:

[0015] A zoom knob has a through cavity with two ends, and an external thread is arranged on the outer circumferential surface of the zoom knob. The external thread cooperates with the internal thread. By rotating the zoom knob, the zoom knob can move along the length direction of the internal cavity of the barrel.

[0016] A zoom transmission rod is connected to the first end of the zoom knob and can drive the zoom knob to rotate when the zoom transmission rod is rotated.

[0017] A zoom movable lens seat is rotatably connected to the second end of the zoom knob and can move synchronously with the zoom knob. The zoom movable lens seat extends to the active cavity through the gaps on both sides, and the second end of the zoom movable lens seat fixes the adjustable focus lens part in the active cavity.

[0018] Further, a plurality of recessed clamping grooves and a first circular groove are arranged at the first end port of the zoom knob. A plurality of first drum surfaces are arranged on the first end surface of the zoom transmission rod to one-to-one cooperate with the plurality of clamping grooves. The first circular groove is embedded with a first clamping ring to prevent the first end of the zoom transmission rod from being separated from the first end port of the zoom knob.

[0019] Further, a step is formed inside the second end port of the zoom knob. The first end of the zoom movable lens seat is provided with a plug column which can enter the second end port of the zoom knob. The side circumferential surface of the plug column is provided with a second circular groove, and the second circular groove is embedded with a second clamping ring to prevent the plug column from being separated from the zoom knob.

[0020] Further, the first end of the zoom movable lens seat is a "T" type structure composed of a circular plate and a plug column. The side edges of the circular plate are connected to two symmetrical side plates which can pass through the gaps on both sides and connect the second end of the zoom movable lens seat. The second end of the zoom movable lens seat is a circular ring body structure. The inner ring of the circular ring body fixes the adjustable focus lens part, and the outer ring circumferential surface of the circular ring body is provided with a third circular groove. The third circular groove is embedded with an "O" ring.

[0021] Further, the adjustable focus lens part comprises a zoom flat-concave lens which is fixed to the inner ring of the circular ring body.

[0022] Further, the lens assembly comprises a zoom fixed lens seat, a zoom flat convex lens arranged in the zoom fixed lens seat, and an inner threaded section arranged on the zoom fixed lens seat and facing the mouth of the adjustable focus lens part.

[0023] Further, the first end edge of the zoom LD seat is connected with two symmetrical arc panels, the second end of the zoom LD seat extended from the lens assembly is provided with an outer threaded section, and the outer threaded section is screwed with the inner threaded section to fix the zoom LD seat and the zoom fixed lens seat.

[0024] Compared with the prior art, the utility model has the beneficial effects that:

[0025] 1. The zoom laser irradiation module is screwed with the barrel shell through the zoom mechanism, the adjustable focus lens part can move in the movable cavity, the zoom transmission rod is extended out of the barrel shell as a manual part, and power driving is not needed, so that the cost is saved.

[0026] 2. The zoom laser irradiation module is screwed with the barrel shell through the zoom mechanism, and the focal length adjusting precision is high.

[0027] 3. The zoom mechanism and the light source assembly adopt the staggered distribution structure, which is simple and convenient to disassemble and assemble. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a perspective view of the zoom laser irradiation module.

[0029] Figure 2 It is a structure view of the zoom laser irradiation module after removing the barrel shell.

[0030] Figure 3 It is a perspective view of the zoom LD seat.

[0031] Figure 4 It is a structure view of the barrel shell.

[0032] Figure 5 It is a sectional view of the zoom laser irradiation module after removing the barrel shell and the zoom transmission rod.

[0033] Figure 6 It is a structure view of the zoom movable lens seat.

[0034] Figure 7 It is a structure view of the zoom mechanism.

[0035] Figure 8 It is a structure view of the zoom transmission rod.

[0036] The marks in the drawings: barrel shell 1, zoom mechanism 2, lens assembly 3, light source assembly 4, internal thread 11, first snap ring 21, clamping groove 22, zoom knob 23, zoom movable lens holder 24, zoom flat concave lens 25, "O" ring 26, second snap ring 27, zoom transmission rod 28, zoom fixed lens holder 31, zoom flat convex lens 32, zoom LD holder 41, light source 42, second circular groove 241, side plate 242, third circular groove 243, inner ring 244, second drum surface 281, connecting rod 282, first drum surface 283, arc surface plate 411, external thread section 412. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, so that the advantages and characteristics of the present application can be more easily understood by those skilled in the art, and the protection scope of the present application can be more clearly and definitely defined. Obviously, the described embodiments of the present application are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0039] Embodiment 1: The specific structure of the present application is as follows:

[0040] Please refer to the drawings Figures 1-8 The zoom laser irradiation module of the present application comprises a barrel shell 1, a lens assembly 3 and a light source assembly 4. The lens assembly 3 is fixed to the first port of the barrel shell 1, and the light source assembly 4 is fixedly arranged in the barrel shell 1 and spaced apart from the zoom flat convex lens 32 of the lens assembly 3 by a distance. The barrel shell 1 is a cylindrical sleeve structure, and an internal thread 11 is arranged in the second port thereof.

[0041] The zoom laser irradiation module further comprises a zoom mechanism 2, which is movably arranged in the barrel shell 1 and provided with a driving part and an adjustable focus lens part connected with the driving part and located between the zoom flat convex lens 32 and the light source 42. The adjustable focus lens part can be driven to move in the area between the zoom flat convex lens 32 and the light source 42. The zoom flat convex lens 32 has a flat surface on one side facing the light source 42 and a convex surface on the other side. The lens assembly 3 comprises a zoom fixed lens holder 31 and a zoom flat convex lens 32 arranged in the zoom fixed lens holder 31. The zoom fixed lens holder 31 is provided with an internal thread section at the port facing the adjustable focus lens part.

[0042] The light source assembly 4 includes a zoom LD seat 41 and a light source 42, which is an LD infrared laser diode. The light source 42 is fixed to the first end of the zoom LD seat 41; the second end of the zoom LD seat 41 is fixed with the lens assembly 3, and an active cavity is formed between the zoom LD seat 41 and the lens assembly 3. The active cavity is open on both sides, and gaps are left on both sides to the second port of the barrel shell 1. The light emitting direction of the light source 42 is towards the zoom plano-convex lens 32.

[0043] The zoomable lens part includes a zoom plano-concave lens 25 fixed to the inner ring 244 of the circular ring body. The zoom plano-concave lens 25 has a concave surface on the side facing the light source 42, and a flat surface on the other side. The laser emitted by the light source 42 is diverged by the zoom plano-concave lens 25, and then focused by the zoom plano-convex lens 32. By changing the position of the zoom plano-concave lens 25, the zoom plano-convex lens 32 is focused.

[0044] Embodiment 2,

[0045] The following is a specific structure description of the zoom mechanism 2. The driving part includes:

[0046] A zoom knob 23 with a through cavity through both ends, the outer peripheral surface of which is provided with an external thread, which cooperates with the internal thread 11. By rotating the zoom knob 23, the zoom knob 23 can be moved along the length direction of the inner cavity of the barrel shell 1;

[0047] A zoom transmission rod 28 connected to the first end of the zoom knob 23 and capable of rotating the zoom knob 23 when the zoom transmission rod 28 is rotated;

[0048] A zoom movable lens seat 24, the first end of which is rotatably connected to the second end of the zoom knob 23 and can move synchronously with the zoom knob 23. The zoom movable lens seat 24 extends to the active cavity through the gaps on both sides, and fixes the zoomable lens part at the second end of the active cavity.

[0049] A plurality of recessed clamping grooves 22 and a first circular groove are arranged at the first end port of the zoom knob 23. The first end surface of the zoom transmission rod 28 is provided with a plurality of first drum surfaces 283 which are one-to-one matched with the plurality of clamping grooves 22. The first circular groove is embedded with a first clamping ring 21 to prevent the first end of the zoom transmission rod 28 from being separated from the first end port of the zoom knob 23.

[0050] A step is formed on the inner side of the second end port of the zoom knob 23. The first end of the zoom movable lens mount 24 is provided with a post that can enter the second end port of the zoom knob 23. The side circumferential surface of the post is provided with a second circular groove 241. The second circular groove 241 is fitted with a second retaining ring 27 to prevent the post from disengaging from the zoom knob 23.

[0051] The first end of the zoomable lens mount 24 is a "T"-shaped structure composed of a circular plate and a post. The side edge of the circular plate is connected to two symmetrical side plates 242. The two symmetrical side plates 242 can pass through the gaps on both sides and connect to the second end of the zoomable lens mount 24. The second end of the zoomable lens mount 24 is a ring structure. The inner ring 244 of the ring fixes the adjustable lens part. The outer ring circumference is provided with a third circular groove 243. The third circular groove 243 is fitted with an "O" ring 26.

[0052] The first edge of the zoom LD mount 41 is connected to two symmetrical arc panels 411. The second end of the zoom LD mount 41, which extends from the two symmetrical arc panels 411 toward the lens assembly 3, is provided with an external thread section 412. The external thread section 412 is screwed into the internal thread section to fix the zoom LD mount 41 to the zoom fixed lens mount 31.

[0053] Example 3:

[0054] Based on the descriptions of the zoom laser irradiation module structures in Examples 1 and 2, the following describes the operation of the zoom laser irradiation module:

[0055] like Figures 1-8 As shown, the two ends of the zoom transmission rod 28 have the same structure, both being drum-shaped structures. The first end of the zoom transmission rod 28 is provided with multiple first drum surfaces 283, and the second end is provided with multiple second drum surfaces 281. The first end and the second end of the zoom transmission rod 28 are connected by a connecting rod 282.

[0056] Rotate the zoom transmission rod 28 clockwise, and the zoom transmission rod 28 will drive the zoom knob 23 to rotate. Since the zoom knob 23 is threadedly connected to the internal thread 11, the zoom knob 23 moves toward the light source 42.

[0057] The zoom knob 23 is rotatably connected to the zoom movable lens mount 24. The zoom knob 23 pushes the zoom movable lens mount 24 to move towards the zoom plano-convex lens 32. Since the light source 42 and the zoom plano-convex lens 32 are both fixed in position, the zoom plano-concave lens 25 on the zoom movable lens mount 24 moves closer to the zoom plano-convex lens 32, thereby changing the direction of light propagation.

[0058] When the zoom transmission rod 28 is rotated counterclockwise, the zooming flat concave lens 25 moves away from the zooming flat convex lens 32, the direction of light propagation is changed, and the focusing purpose is achieved.

[0059] In conclusion, the zooming laser irradiation module is screwed with the barrel shell through the zooming mechanism, the adjustable focusing lens part can move in the movable cavity, the zooming transmission rod extends out of the barrel shell as a manual part, and power driving is not needed, so that cost is saved. The zooming laser irradiation module is screwed with the barrel shell through the zooming mechanism, and the focusing precision is high. The zooming mechanism and the light source assembly adopt the staggered distribution structure, which is simple and convenient to disassemble and assemble.

[0060] The preferred embodiments are only used for describing the utility model, and do not limit the patent range of the utility model, and equivalent structures or equivalent process transformations in the content of the utility model specification and drawings, or direct or indirect application in other related technical fields are also included in the patent protection range of the utility model.

Claims

1. A zoom laser irradiation module, comprising a cylindrical shell (1), a lens assembly (3), and a light source assembly (4), wherein the lens assembly (3) is fixed to a first port of the cylindrical shell (1), and the light source assembly (4) is fixedly disposed inside the cylindrical shell (1) with its light source (42) spaced apart from the zoom plano-convex lens (32) of the lens assembly (3), characterized in that, The zoom laser irradiation module further comprises a zoom mechanism (2) movably arranged on the barrel (1), which is provided with a driving part and an adjustable lens part connected with the driving part and located between the zoom flat-convex lens (32) and the light source (42), and the adjustable lens part can be driven to move in the area between the zoom flat-convex lens (32) and the light source (42).

2. The zoom laser irradiation module according to claim 1, wherein, The light source assembly (4) comprises a zoom LD seat (41) and a light source (42). The light source (42) is fixed to the first end of the zoom LD seat (41). The second end of the zoom LD seat (41) is fixed to the lens assembly (3), and an active cavity is formed between the zoom LD seat (41) and the lens assembly (3), and the active cavity is open on both sides and has a gap to the second port of the barrel (1).

3. The zoom laser irradiation module according to claim 2, wherein, The barrel (1) is provided with an internal thread (11) in the second port.

4. The zoom laser irradiation module according to claim 3, wherein, The driving part comprises: a zoom knob (23) having a through cavity with two ends, an outer periphery of which is provided with an external thread, the external thread is matched with the internal thread (11), and the zoom knob (23) can be moved along the length direction of the internal cavity of the barrel (1) by rotating the zoom knob (23); a zoom transmission rod (28) connected with the first end of the zoom knob (23) and capable of driving the zoom knob (23) to rotate when the zoom transmission rod (28) is rotated; a zoom movable lens seat (24) having a first end rotatably connected with the second end of the zoom knob (23) and capable of moving synchronously with the zoom knob (23), the zoom movable lens seat (24) extends to the active cavity through the gaps on both sides, and the second end of the zoom movable lens seat (24) in the active cavity fixes the adjustable lens part.

5. The zoom laser irradiation module according to claim 4, wherein, The first end of the zoom knob (23) is provided with a plurality of recessed clamping grooves (22) and a first circular groove, the first end surface of the zoom transmission rod (28) is provided with a plurality of first drum surfaces (283) matched with the plurality of clamping grooves (22) one by one, and the first circular groove is embedded with a first clamping ring (21) to prevent the first end of the zoom transmission rod (28) from being separated from the first end port of the zoom knob (23).

6. The zoom laser irradiation module according to claim 4, wherein, The second end of the zoom knob (23) is formed with a step inside the second end port, the first end of the zoom movable lens seat (24) is provided with a plug column capable of entering the second end port of the zoom knob (23), the side periphery of the plug column is provided with a second circular groove (241), and the second circular groove (241) is embedded with a second clamping ring (27) to prevent the plug column from being separated from the zoom knob (23).

7. The zoom laser irradiation module according to claim 6, wherein, The first end of the zoom movable lens holder (24) is a "T" shaped structure composed of a circular plate and a column, the side edges of the circular plate are connected with two symmetrical side plates (242) which can pass through the two side gaps and connect the second end of the zoom movable lens holder (24), the second end of the zoom movable lens holder (24) is a circular ring structure, the inner ring (244) of the circular ring is fixed with the adjustable focus lens part, the outer ring peripheral surface is provided with a third circular groove (243), the third circular groove (243) is embedded with an "O" ring (26).

8. The zoom laser irradiation module according to claim 7, wherein, The adjustable focus lens part comprises a zoom flat concave lens (25) which is fixed on the inner ring (244) of the circular ring.

9. The zoom laser irradiation module of claim 2, wherein, The lens assembly (3) comprises a zoom fixed lens holder (31) and a zoom flat convex lens (32) arranged in the zoom fixed lens holder (31), the zoom fixed lens holder (31) is provided with an internal thread section towards the mouth of the adjustable focus lens part.

10. The zoom laser irradiation module according to claim 9, wherein, The first end edge of the zoom LD holder (41) is connected with two symmetrical arc plates (411), the second end of the zoom LD holder (41) formed by extending the two symmetrical arc plates (411) towards the lens assembly (3) is provided with an external thread section (412), the external thread section (412) is screwed with the internal thread section to fix the zoom LD holder (41) with the zoom fixed lens holder (31).

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