Lens adjustment device and projection equipment

Abstract

The present invention discloses a lens adjustment device and a projection device. The lens adjustment device comprises a lens holder, an adjustment holder, a first direction adjustment component, a second direction adjustment component, a guide arm, an upper cover and a shell; the first direction adjustment component and the second direction adjustment component are arranged on the upper cover, and the lens holder, the adjustment holder and the guide arm are contained in a space formed by the upper cover and the shell; the first direction adjustment component drives the lens holder to slide in the first direction, the second direction adjustment component and the guide arm drive the adjustment holder to rotate, and the lens holder moves along the second direction, and the first direction and the second direction are perpendicular to each other. The lens adjustment device of the present invention uses the adjustment component to displace the lens in one direction, drives the lens to rotate through the guide arm, and the component forms a movement in another direction, thereby adjusting the position of the lens, and the two direction adjustment components are relatively independent, the overall adjustment device has a simple and compact structure, occupies little space, reduces the manufacturing cost and is easy to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of position adjustment, and in particular to a lens adjustment device and a projection device. Background Art

[0002] Currently, in the field of projection equipment, there are mature motor-driven lens adjustment solutions that can automatically adjust the direction of the lens to make the lens move. However, due to cost requirements and volume limitations, as well as low frequency of use, some projection devices require manual lens adjustment to move the projected image, while minimizing the size of the lens adjustment mechanism to adapt to the internal space limitations of the projection device. Summary of the invention

[0003] The invention provides a lens adjusting device and a projection device, which can manually adjust the position of a lens and have a simple structure and a small volume, thereby solving the problem that the current electric lens adjusting device is not suitable for certain projection devices.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a lens adjustment device, the lens adjustment device comprises a lens holder, an adjustment holder, a first direction adjustment component, a second direction adjustment component, a guide arm, an upper cover and a shell; the first direction adjustment component and the second direction adjustment component are arranged on the upper cover, and the lens holder, the adjustment holder and the guide arm are accommodated in a space formed by the upper cover and the shell;

[0005] Wherein, the lens bracket is movably connected to the adjustment bracket; the first end of the guide arm is hinged to the adjustment bracket, and the second end of the guide arm is hinged to the housing;

[0006] Driven by the first direction adjustment component, the lens holder can move in a first direction relative to the upper cover, and driven by the second direction adjustment component and the guide arm, the lens holder moves along a second direction, and the first direction and the second direction are perpendicular to each other.

[0007] Wherein, the adjustment bracket can rotate around the first end, and the guide arm can rotate around the second end;

[0008] The adjustment bracket rotates around the second end along with the guide arm, thereby driving the lens bracket to have a rotation tendency; one component of the rotation of the lens bracket is the first direction, and the other component is the second direction. The lens bracket is limited in the first direction by the first direction adjustment component, and the lens bracket moves linearly along the second direction.

[0009] Wherein, the first direction adjustment component comprises a first knob, a first screw rod and a first slider, the first knob is fixed to one end of the first screw rod, and the first slider is clamped with the lens bracket;

[0010] When the first knob is rotated, the first screw rod is driven to rotate, and when the first screw rod is rotated, the first slider moves along the length direction of the first screw rod, and the lens holder moves along the length direction of the first screw rod together with the first slider;

[0011] The length direction of the first screw rod is a first direction.

[0012] Wherein, the second direction adjustment component comprises a second knob, a second screw rod and a second slider, the second knob is fixed to one end of the second screw rod, and the second slider is clamped with the adjustment bracket;

[0013] When the second knob is rotated, the second screw rod is driven to rotate. When the second screw rod is rotated, the second slider moves along the length direction of the second screw rod. The adjustment bracket has a tendency to move along the length direction of the second screw rod together with the second slider. The adjustment bracket rotates around the second end under the action of the guide arm. The side edge of the adjustment bracket drives the lens bracket to rotate.

[0014] The rotation component of the lens holder in the first direction is limited by the first slider, and the rotation of the lens holder is converted into a linear motion in the second direction.

[0015] Wherein, a first bayonet is provided on a side of the first slider facing the lens holder, and a first protrusion is correspondingly provided on the lens holder, and the first slider and the lens holder are engaged with the first protrusion via the first bayonet;

[0016] A second bayonet is provided on a side of the second sliding block facing the adjusting bracket, and a second protrusion is correspondingly provided on the adjusting bracket. The second sliding block and the adjusting bracket are engaged with each other through the second bayonet and the second protrusion.

[0017] A notch is formed on one side of the lens holder corresponding to the second protrusion, so that the second protrusion passes through the notch and is engaged with the second sliding block.

[0018] Among them, a first boss is provided on the side of the lens holder facing the adjustment holder, and a second boss is provided on the side of the adjustment holder facing the lens holder, and the positions of the first boss and the second boss correspond to each other; when the lens holder moves along the first direction, the first boss slides on the second boss.

[0019] The adjusting bracket is provided with a first slide groove, the lens bracket is sleeved in the first slide groove, the lens bracket can move along the first direction in the first slide groove, and has a tendency to rotate driven by the lens bracket;

[0020] The first sliding groove is formed by a bottom plate of the adjusting bracket and a first side wall and a second side wall extending from both sides of the bottom plate.

[0021] Wherein, a clearance groove is provided on the first side wall located on the same side as the first protrusion, for accommodating the first protrusion;

[0022] The avoidance groove is arranged along the first direction, and the width of the avoidance groove is greater than the width of the first protrusion in the first direction, so that the first protrusion can slide in the avoidance groove when moving in the first direction. A second slide groove is provided on the shell, and a third boss is provided on the side of the adjustment bracket facing the shell;

[0023] The third boss extends into the second slide groove, and when the lens holder rotates around the second end along with the guide arm, the third boss slides in the second slide groove.

[0024] Wherein, the lens adjustment device further comprises a sealing pressure plate; the sealing pressure plate is connected to the housing and is covered on a side of the second slide groove away from the lens bracket;

[0025] The lens adjustment device further comprises a plurality of screw rod pressure plates, and the screw rod pressure plates are respectively covered on a side of the first screw rod and the second screw rod away from the lens bracket.

[0026] In order to solve the technical problem, the present invention further provides a projection device, the projection device comprising a lens and a lens adjustment device, and the lens adjustment device is the lens adjustment device described above.

[0027] Compared with the prior art, the lens adjustment device and the projection equipment of the present invention achieve the following beneficial effects: the lens is displaced in one direction by using an adjustment component, and the lens is driven to rotate by a guide arm, and the component forms a movement in another direction, thereby adjusting the position of the lens, and the two direction adjustment components are relatively independent, the overall adjustment device has a simple and compact structure, occupies little space, reduces manufacturing costs and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 This is a schematic diagram of a first disassembled state of the lens adjustment device of the present invention;

[0030] Figure 2 is a schematic diagram of a second disassembled state of the lens adjustment device of the present invention;

[0031] Figure 3 is a stereogram of the lens adjustment device of the present invention after being assembled with the lens;

[0032] Figure 4 It is a schematic diagram of the front structure after the adjustment bracket and the lens bracket are assembled;

[0033] Figure 5 This is a back view of the lens mount;

[0034] Figure 6 is a front view of the adjustment bracket;

[0035] Figure 7 It is a schematic diagram of the structure of the shell;

[0036] Figure 8 It is a schematic diagram of the back structure of the adjustment bracket. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] See also Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the first disassembled state of the lens adjustment device of the present invention, Figure 2 This is a schematic diagram of a second disassembled state of a lens adjustment device of the present invention, wherein the lens adjustment device comprises a lens holder 1, an adjustment holder 2, a first direction adjustment assembly 3, a second direction adjustment assembly 4, a guide arm 5, an upper cover 6 and a shell 7; the first direction adjustment assembly 3 and the second direction adjustment assembly 4 are arranged on the upper cover 6, and the lens holder 1, the adjustment holder 2 and the guide arm 5 are accommodated in a space formed by the upper cover 6 and the shell 7; wherein the lens holder 1 is movably connected to the adjustment holder 2; the first end of the guide arm 5 is hinged to the adjustment holder 2, and the second end of the guide arm 5 is hinged to the shell 7, the adjustment holder 2 can rotate around the first end, and the guide arm 5 can rotate around the second end; driven by the first direction adjustment assembly 3, the lens holder 1 can move in a first direction relative to the upper cover 6, and driven by the second direction adjustment assembly 4 and the guide arm 5, the lens holder 1 moves in a second direction, and the first direction and the second direction are perpendicular to each other. The adjusting bracket 2 rotates around the second end along with the guide arm 5, thereby driving the lens bracket 1 to have a tendency to rotate; one component of the rotation of the lens bracket 1 is in the first direction, and the other component is in the second direction perpendicular to the first direction. The lens bracket 1 is limited by the first direction adjusting component 3 in the first direction, and the lens bracket 1 moves linearly along the second direction.

[0041] The lens adjustment device in the present application is used to adjust the lens of the projection device. The existing lens adjustment device usually uses a motor to drive the lens to move on the guide rails on both sides, so as to adjust the position of the lens up, down, left, and right. However, the structure is relatively complex and the volume is large, which is not suitable for projection devices with certain specific purposes. The lens adjustment device in the present application is manually adjusted, and the position adjustment in the up and down directions and the left and right directions are independent of each other. The structure is relatively simple. The structure of the lens adjustment device will be described in detail below.

[0042] The lens holder 1 in the present application is provided with a lens mounting area for mounting and carrying the lens. The lens is fixed on the lens holder 1 and moves with the movement of the lens holder 1. The movement of the lens holder 1 is directly driven by the first direction adjustment component 3 or indirectly driven by the second direction adjustment component 4 through the adjustment holder 2. The movement of the lens holder 1 driven by the first direction adjustment component 3 is a linear movement, and the movement direction is the first direction. The adjustment holder 2 and the lens holder 1 are movably connected, and the two can move relative to each other. The adjustment holder 2 is driven by the second direction adjustment component 4 to move linearly, and the linear movement is converted into a rotational movement through the guide arm 5 during the movement process. The adjustment holder 2 drives the lens holder 1 to move together during the above-mentioned movement process, so the lens holder 1 is also driven to form a trend of rotational movement. One component of the rotational movement of the lens holder 1 is the first direction, and the other component is the second direction perpendicular to the first direction. However, the lens holder 1 is limited by the first direction adjustment component 3 in the first direction, and the lens holder 1 cannot move in the first direction. Therefore, the movement component in the first direction is offset, and the lens holder 1 only has the movement component in the second direction, thereby converting the rotational movement of the lens holder 1 into a linear movement in the second direction. Through the functions of the first direction adjustment component 3, the second direction adjustment component 4 and the guide arm 5, the lens holder 1 drives the lens to move linearly in the first direction and the second direction respectively, so that the position adjustment in different directions is independent.

[0043] The upper cover 6 and the housing 7 in this embodiment are the outer protective shells of the lens. The two are bolted together to form an accommodating space. When the lens holder 1 drives the lens to move, the upper cover 6 and the housing 7 are relatively stationary. The first direction adjustment component 3 and the second direction adjustment component 4 are both installed on the upper cover 6. The guide arm 5 is used to convert the linear motion of the adjustment bracket 2 into a rotational motion. One end of the guide arm 5 is hinged with the adjustment bracket 2 to form a first end, and the other end is hinged with the housing 7 to form a second end. The guide arm 5 can rotate around the first end or the second end respectively. When the second direction adjustment component 4 drives the adjustment bracket 2 to move linearly, the first end of the guide arm 5 is subjected to force and rotates with the second end as the fulcrum, and at the same time drives the adjustment bracket 2 to rotate with the second end as the fulcrum. The lens holder 1 is slidably connected to the adjustment bracket 2, so the adjustment bracket 2 drives the lens holder 1 to form a tendency of rotational motion. Since the first direction adjustment component 3 is limited in the first direction, the lens holder 1 can only move in the second direction, so that the position of the lens in the second direction is adjusted by the second direction adjustment component 4.

[0044] The first direction and the second direction in this embodiment are perpendicular to each other, and can be the vertical direction of the lens and the horizontal direction of the lens, respectively. The movement of the lens holder 1 in the first direction can be understood as the up and down movement in the vertical direction, and the movement of the lens holder 1 in the second direction can be understood as the left and right movement in the horizontal direction. Of course, it is also possible to interchange the first direction and the second direction, or to set the first direction and the second direction to be inclined to the direction of the lens, which are all technical concepts of the present invention. For ease of explanation, in this embodiment, the first direction and the second direction are taken as the vertical direction of the lens and the horizontal direction of the lens, respectively, as an example.

[0045] The first direction adjustment component 3 in this embodiment includes a first knob 31, a first screw rod 32 and a first slider 33. The first knob 31 is fixed to one end of the first screw rod 32, and the first slider 33 is clamped with the lens holder 1. When the first knob 31 is rotated, the first screw rod 32 is driven to rotate. When the first screw rod 32 is rotated, the first slider 33 moves along the length direction of the first screw rod 32, and the lens holder 1 moves along the length direction of the first screw rod 32 together with the first slider 33. The length direction of the first screw rod 32 is the first direction. The first direction adjustment component 3 in this embodiment is a screw rod and slider structure, which converts the rotational movement of the first knob 31 into the linear movement of the first slider 33 on the first screw rod 32. The first screw rod 32 is vertically mounted on the upper cover 6, so the length direction of the first screw rod 32, that is, the movement direction of the first slider 33, is also the vertical direction. Since the first slider 33 is clamped with the lens holder 1, when the first slider 33 moves in the vertical direction, it also drives the lens holder 1 and the lens to move up and down, thereby adjusting the position of the lens in the up and down direction through the first direction adjustment component 3.

[0046] The second direction adjustment component 4 in this embodiment includes a second knob 41, a second screw rod 42 and a second slider 43. The second knob 41 is fixed to one end of the second screw rod 42, and the second slider 43 is engaged with the adjustment bracket 2. When the second knob 41 is rotated, the second screw rod 42 is driven to rotate. When the second screw rod 42 is rotated, the second slider 43 moves along the length direction of the second screw rod 42. The adjustment bracket 2 has a tendency to move along the length direction of the second screw rod 42 together with the second slider 43. The adjustment bracket 2 rotates around the second end under the action of the guide arm 5, and the side of the adjustment bracket 2 drives the lens bracket 1 to rotate. The rotation component of the lens bracket 1 in the first direction is limited by the first slider 33, and the rotation of the lens bracket 1 is converted into a linear motion in the second direction. The second direction adjustment component 4 in this embodiment is also a screw slider structure, which converts the rotational motion of the second knob 41 into a linear motion of the second slider 43 on the second screw rod 42. The second screw rod 42 is vertically mounted on the upper cover 6, so the movement direction of the second slider 43 is the vertical direction. Since the second slider 43 is clamped with the adjustment bracket 2, the second slider 43 also drives the adjustment bracket 2 to move up and down when it moves in the vertical direction. When the adjustment bracket 2 moves, it drives the guide arm 5 hinged with the adjustment bracket 2 to rotate. During the above movement process, the housing 7 is in a stationary state. The movement of the guide arm 5 is to rotate with the second end hinged with the housing 7 as the fulcrum. The rotation of the guide arm 5 drives the adjustment bracket 2 to rotate with the second end as the fulcrum, and the lens bracket 1 movably connected with the adjustment bracket 2 rotates at the same time. The movement of the lens bracket 1 in the vertical direction is clamped by the first slider 33 through the first protrusion 11 described below, and it cannot move in the up and down direction. Therefore, the rotation component of the lens bracket 1 in the up and down direction is offset, and there is only the movement component in the left and right direction. The lens bracket 1 drives the lens to move in the horizontal direction, thereby adjusting the position of the lens in the left and right direction through the second direction adjustment component 4.

[0047] In this embodiment, the first screw rod 32 and the second screw rod 42 are both disposed on the upper cover 6, and the first knob 31 and the second knob 41 are located on the same side, which meets the use requirement of adjusting the lens in different directions on one side and is convenient for user operation.

[0048] In this embodiment, the first slider 33 is provided with a first bayonet 34 on the side facing the lens holder 1, and the lens holder 1 is provided with a first protrusion 11 correspondingly, and the first slider 33 and the lens holder 1 are engaged with the first protrusion 11 through the first bayonet 34. The second slider 43 is provided with a second bayonet 44 on the side facing the adjustment bracket 2, and the adjustment bracket 2 is provided with a second protrusion 21 correspondingly, and the second slider 43 and the adjustment bracket 2 are engaged with the second protrusion 21 through the second bayonet 44. The first protrusion 11 and the second protrusion 21 are respectively used to engage with the first slider 33 and the second slider 43, so that the lens holder 1 and the adjustment bracket 2 are driven to move when the first slider 33 and the second slider 43 move on the first screw rod 32 and the second screw rod 42. The engagement between the first bayonet 34 and the first protrusion 11 and the second bayonet 44 and the second protrusion 21 is not completely locked, and there is a certain gap between the two, so that they can move relative to each other. When the first slider 33 and the second slider 43 move in the vertical direction, the lens holder 1 and the adjustment holder 2 are driven to move in the vertical direction by contacting with the first protrusion 11 and the second protrusion 21. When the second slider 43 moves vertically and drives the adjustment holder 2 and the guide arm 5 to rotate, the adjustment holder 2 rotates and drives the lens holder 1 to rotate at the same time. Since the first slider 33 is stationary at this time, the lens holder 1 cannot drive the first slider 33 to move. The lens holder 1 is abutted by the first slider 33 in the vertical direction. Therefore, the lens holder 1 cannot move in the vertical direction. The rotational motion is converted into a linear motion in the horizontal direction, and the lens holder 1 slides horizontally.

[0049] In this embodiment, a notch 12 is provided on one side of the lens holder 1 corresponding to the second protrusion 21, so that the second protrusion 21 passes through the notch 12 and engages with the second slider 43. When assembling the projection device, the upper cover 6, the lens holder 1, the adjustment holder 2 and the housing 7 are arranged in sequence, and the adjustment holder 2 needs to pass through the lens holder 1 and engage with the second slider 43 installed on the upper cover 6, so the notch 12 is provided on one side of the lens holder 1, so that the second protrusion 21 on the adjustment holder 2 can pass over the lens holder 1 and contact the second slider 43. Of course, the notch 12 can also be set as a through hole, so that the second protrusion 21 passes through the through hole and contacts the second slider 43.

[0050] In one embodiment, see Figure 5 and Figure 6 , Figure 5 This is the back view of the lens mount. Figure 6 : is a front view of the adjustment bracket. The side of the lens bracket 1 facing the adjustment bracket 2 is provided with a first boss 13, and the side of the adjustment bracket 2 facing the lens bracket 1 is provided with a second boss 28. The positions of the first boss 13 and the second boss 28 correspond to each other. When the lens bracket 1 moves along the first direction, the first boss 13 slides on the second boss 28. The movement between the lens bracket 1 and the adjustment bracket 2 is the sliding of the first boss 13 on the second boss 28. Please refer to Figure 4 and Figure 5 , Figure 4 This is a back view of the lens bracket 1, that is, the side facing the adjustment bracket 2. Figure 5 To adjust the front view of the bracket 2, the first boss 13 is arranged at the four corners of the lens bracket 1, and the shape can be a cylindrical boss. The second boss 28 is arranged on the side of the adjustment bracket 2, corresponding to the position of the first boss 13 in the vertical direction, and has an elliptical or rectangular shape. The surface forms a slideway of the first boss 13, so that the first boss 13 can slide along the second boss 28.

[0051] See also Figure 1 and Figure 4 In this embodiment, the adjustment bracket 2 is provided with a first slide groove 22, and the lens bracket 1 is sleeved in the first slide groove 22. The lens bracket 1 can move in the first slide groove 22 along the first direction, and has a tendency to rotate driven by the lens bracket 1. The first slide groove 22 is formed by the bottom plate 27 of the adjustment bracket 2 and the first side wall 23 and the second side wall 24 extending from both sides of the bottom plate 27. The first side wall 23 and the second side wall 24 are arranged on both sides of the bottom plate 27 along the second direction and extend along the first direction. Further, a clearance groove 25 is provided on the first side wall 23 located on the same side as the first protrusion 11, which is used to accommodate the first protrusion 11. The lens bracket 1 is sleeved in the first slide groove 22 formed by the adjustment bracket 2. The first slide groove 22 is used to limit the movement direction of the lens bracket 1 to the vertical direction when it is driven by the first direction adjustment component 3 to move. At the same time, when the adjustment bracket 2 is driven by the second direction adjustment component 4 to move, the adjustment bracket 2 rotates, thereby driving the lens bracket 1 to form a tendency to rotate. In order to avoid position conflict, a clearance groove 25 is provided on the first side wall 23 on the same side as the first protrusion 11 to prevent the lens holder 1 from being unable to be installed in the adjustment holder 2. Moreover, the clearance groove 25 is arranged along the first direction, and the width of the clearance groove 25 in the first direction is greater than the width of the first protrusion 11 in the first direction, so that when the first protrusion 11 moves in the first direction, it can slide in the clearance groove 25 without driving the adjustment holder 2 to move in the first direction. At the same time, it is ensured that when the adjustment holder 2 rotates, the lens holder 1 does not move with the adjustment holder 2 in the first direction, but moves with the adjustment holder 2 in the second direction.

[0052] See also Figure 7 and Figure 8In this embodiment, a second slide groove 71 is provided on the housing 7, and a third boss 26 is provided on the side of the adjustment bracket 2 facing the housing 7. The third boss 26 extends into the second slide groove 71, and when the lens bracket 1 rotates around the second end with the guide arm 5, the third boss 26 slides in the second slide groove 71. Since the housing 7 is close to the lens of the lens, it is necessary to compress the distance as much as possible under the premise of ensuring sufficient strength. Therefore, a second slide groove 71 is provided on the housing 7, and the adjustment bracket 2 is slidably connected to the housing 7 through the third boss 26, which reduces the area of ​​fine processing during processing, and at the same time reduces the distance between the housing 7 and the adjustment bracket 2, making the structure of the lens adjustment device more compact. In this embodiment, four second slide grooves 71 are provided on the housing 7, and four third bosses 26 are provided on the side of the adjustment bracket 2 facing the housing 7. The four second slide grooves 71 are respectively distributed at the four corners of the housing 7, and the four third bosses 26 are also correspondingly provided at the four corners of the back of the adjustment bracket 2, so that the third bosses 26 can correspond to the second slide grooves 71 one by one.

[0053] The lens adjustment device in this embodiment further includes a sealing plate 8, which is connected to the housing 7 and is covered on a side of the second slide groove 71 away from the lens holder 1. The sealing plate 8 is provided to seal the housing 7 to prevent dust from entering the optical and mechanical system of the projection device from the lens holder.

[0054] The lens adjustment device in this embodiment also includes a plurality of screw pressure plates 9, which are respectively covered on the side of the first screw 32 and the second screw 42 away from the lens bracket 1. The screw pressure plates 9 are used to wrap and seal the first screw 32 and the second screw 42 from the outside, protect the first screw 32 and the second screw 42, and limit the positions of the first slider 33 and the second slider 43 to prevent them from jumping. In order to solve the technical problem, the present invention also provides a projection device, the projection device includes a lens and a lens adjustment device, and the lens adjustment device is the above-mentioned lens adjustment device. The lens adjustment device has been described in detail above and will not be repeated here.

[0055] By using the lens adjustment device of the present invention, the lens is displaced in one direction using an adjustment component, and the lens is driven to have a rotation tendency by a guide arm, and the component forms a movement in another direction, thereby adjusting the position of the lens, and the two direction adjustment components are relatively independent, the overall adjustment device has a simple and compact structure, occupies little space, reduces manufacturing costs and is easy to operate.

[0056] The above are only implementation modes of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A lens adjustment device, characterized in that: The lens adjustment device comprises a lens holder, an adjustment holder, a first direction adjustment assembly, a second direction adjustment assembly, a guide arm, an upper cover and a housing; the first direction adjustment assembly and the second direction adjustment assembly are arranged on the upper cover, and the lens holder, the adjustment holder and the guide arm are accommodated in a space formed by the upper cover and the housing; The lens bracket is movably connected to the adjustment bracket; the first end of the guide arm is hinged to the adjustment bracket, and the second end of the guide arm is hinged to the housing; the adjustment bracket can rotate around the first end, and the guide arm can rotate around the second end; The adjusting bracket rotates around the second end along with the guiding arm, thereby driving the lens bracket to rotate; one component of the rotation of the lens bracket is in the first direction, and the other component is in the second direction. The lens bracket is limited in the first direction by the first direction adjusting assembly, and the lens bracket moves linearly along the second direction; Driven by the first direction adjustment component, the lens holder can move in a first direction relative to the upper cover; and Driven by the second direction adjustment component and the guide arm, the lens holder moves along the second direction, and the first direction is perpendicular to the second direction.

2. The lens adjustment device according to claim 1, characterized in that: The first direction adjustment assembly includes a first knob, a first screw rod and a first slider, wherein the first knob is fixed to one end of the first screw rod, and the first slider is clamped with the lens bracket; When the first knob is rotated, the first screw rod is driven to rotate, and when the first screw rod is rotated, the first slider moves along the length direction of the first screw rod, and the lens holder moves along the length direction of the first screw rod together with the first slider; The length direction of the first screw rod is a first direction.

3. The lens adjustment device according to claim 2, characterized in that: The second direction adjustment component comprises a second knob, a second screw rod and a second slider, wherein the second knob is fixed to one end of the second screw rod, and the second slider is clamped with the adjustment bracket; When the second knob is rotated, the second screw rod is driven to rotate. When the second screw rod is rotated, the second slider moves along the length direction of the second screw rod. The adjustment bracket has a tendency to move along the length direction of the second screw rod together with the second slider. The adjustment bracket rotates around the second end under the action of the guide arm. The side edge of the adjustment bracket drives the lens bracket to rotate. The rotation component of the lens holder in the first direction is limited by the first slider, and the rotation of the lens holder is converted into a linear motion in the second direction.

4. The lens adjustment device according to claim 3, characterized in that: A first bayonet is provided on a side of the first slider facing the lens holder, and a first protrusion is correspondingly provided on the lens holder, and the first slider and the lens holder are engaged with the first protrusion via the first bayonet; A second bayonet is provided on a side of the second sliding block facing the adjusting bracket, and a second protrusion is correspondingly provided on the adjusting bracket. The second sliding block and the adjusting bracket are engaged with each other through the second bayonet and the second protrusion.

5. The lens adjustment device according to claim 4, characterized in that: A notch is formed on one side of the lens holder corresponding to the second protrusion, so that the second protrusion passes through the notch and is engaged with the second sliding block.

6. The lens adjustment device according to claim 4, characterized in that: A first boss is provided on the side of the lens holder facing the adjustment holder, and a second boss is provided on the side of the adjustment holder facing the lens holder. The positions of the first boss and the second boss correspond to each other. When the lens holder moves along the first direction, the first boss slides on the second boss.

7. The lens adjustment device according to claim 4, characterized in that: The adjusting bracket is provided with a first sliding groove, the lens bracket is sleeved in the first sliding groove, the lens bracket can move along the first direction in the first sliding groove, and the adjusting bracket drives the lens bracket to have a tendency to rotate; The first sliding groove is formed by a bottom plate of the adjusting bracket and a first side wall and a second side wall extending from both sides of the bottom plate.

8. The lens adjustment device according to claim 7, characterized in that: A clearance groove is provided on the first side wall located on the same side as the first protrusion, for accommodating the first protrusion; The avoidance groove is arranged along the first direction, and the width of the avoidance groove is greater than the width of the first protrusion in the first direction, so that the first protrusion can slide in the avoidance groove when moving in the first direction.

9. The lens adjustment device according to claim 3, characterized in that: A second sliding groove is provided on the shell, and a third boss is provided on a side of the adjustment bracket facing the shell; The third boss extends into the second slide groove, and when the lens holder rotates around the second end along with the guide arm, the third boss slides in the second slide groove.

10. The lens adjustment device according to claim 9, characterized in that: The lens adjustment device further comprises a sealing pressure plate; the sealing pressure plate is connected to the housing and is covered on a side of the second slide groove away from the lens bracket; The lens adjustment device further comprises a plurality of screw rod pressure plates, and the screw rod pressure plates are respectively covered on a side of the first screw rod and the second screw rod away from the lens bracket.

11. A projection device, comprising a lens and a lens adjustment device, characterized in that: The lens adjustment device is the lens adjustment device as described in any one of claims 1-10.

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