CN220626834U - Laser projection device - Google Patents

Abstract

The present disclosure relates to the technical field of optical lenses, and in particular, to a laser projection device, which includes a laser, a light combining lens group, and an adjusting structure, wherein the adjusting structure includes a driving ring, a connecting ring, a driving ring, and a composite lens group; the compound lens group comprises a front lens and a compound lens, the compound lens is connected with the front lens, the front lens is arranged on the adjusting piece, the transmission ring is nested with the connecting ring, the transmission ring is connected with the adjusting piece, and the transmission ring drives the adjusting piece to axially move along the connecting ring when rotating relative to the connecting ring; and the laser beam emitted by the laser is converged with the lens group and then irradiates the compound spectacle lens. The compound lens group is arranged on the adjusting piece, the driving ring is nested with the connecting ring, the driving ring is connected with the adjusting piece, when the driving ring rotates, the driving ring drives the adjusting piece to axially move along the connecting ring when rotating relative to the connecting ring, the position of the adjusting piece on the axial direction of the connecting ring can be adjusted, the synchronous adjustment of the front lens and the compound lens is realized, the imaging quality of the compound lens is not influenced, and the optimization of the light path is further realized.

Description

Laser projection device

Technical Field

The disclosure relates to the technical field of optical lenses, and in particular relates to a laser projection device.

Background

The optical path of the laser projection equipment mainly emits light beams through a laser, the light beams are transmitted to the fly-eye lens through different optical objects, and the light beams are converged on the fluorescent wheel after passing through the focusing lens. At present, in the existing optical path design, the lens and the compound lens are separately designed, so that the size is increased, the variety of materials is increased, and the processing requirement on the fixing position of the compound lens is increased, so that the cost is increased.

In order to solve the problems, the compound spectacle lens and the lens are combined to form a combined lens group, so that the volume is reduced, and the optimization of an optical path can be realized. However, due to the requirement of the fly-eye lens on the incident light, the combined lens group can only move back and forth relative to the fluorescent wheel and can not rotate, so that the imaging of the fly-eye lens is not influenced. Therefore, how to adjust the position of the combined lens assembly in the optical path without affecting the imaging quality of the compound spectacle lens is one of the problems to be solved.

Disclosure of Invention

In order to solve the technical problems, the present disclosure provides a laser lens apparatus to achieve adjustment of a position of a combined lens group in an optical path without affecting imaging quality of a compound spectacle lens.

The utility model provides laser projection equipment, which comprises a laser, a light combining lens group and an adjusting structure, wherein the adjusting structure comprises an adjusting piece, a connecting ring, a driving ring and a compound lens group, the compound lens group comprises a front lens and a compound lens, the compound lens is connected with the front lens, the front lens is arranged on the adjusting piece, the driving ring is nested with the connecting ring, the driving ring is connected with the adjusting piece, and the driving ring drives the adjusting piece to axially move along the connecting ring when rotating relative to the connecting ring;

and the laser beam emitted by the laser irradiates the compound spectacle lens after passing through the light converging lens group.

Optionally, the adjustment structure further comprises a first connector; the connecting ring is positioned at the inner side of the transmission ring, a first limit groove extending along the axial direction of the connecting ring is formed in the connecting ring, a driving groove extending along the axial direction and the circumferential direction of the driving ring is formed in the driving ring, and the first connecting piece penetrates through the driving groove and the first limit groove and is connected with the adjusting piece;

when the transmission ring rotates, the first connecting piece moves in the first limiting groove along the axial direction of the connecting ring under the axial driving of the driving groove.

Optionally, the first connecting piece includes first guide bracket and first fastener, first guide bracket wears to locate the drive slot with first spacing groove, first wearing to establish the hole has been seted up on the first guide bracket, first fastener wear to locate first wearing to establish the hole and connect in the regulating part, just first fastener support press in first guide bracket.

Optionally, the adjustment structure further comprises a second connector; the driving ring is provided with a second limiting groove extending along the circumferential direction of the driving ring, and the second connecting piece is arranged in the second limiting groove in a penetrating manner and is connected with the connecting ring;

when the transmission ring rotates, the second connecting piece moves in the second limiting groove along the circumferential direction of the transmission ring.

Optionally, the driving ring is provided with a plurality of driving grooves and a plurality of second limiting grooves, and a driving groove is arranged between two adjacent second limiting grooves in the circumferential direction of the driving ring.

Optionally, the outer periphery of the front lens is provided with an anti-rotation positioning surface, the adjusting piece is of an annular structure, and the inner side of the adjusting piece is provided with a datum plane which can be attached to the anti-rotation positioning surface;

and/or the inner side of the adjusting piece is provided with an axial limiting surface which is used for limiting the front lens in the axial direction of the adjusting piece, and the front lens is abutted against the axial limiting surface.

Optionally, the compound lens group further includes a rear lens, the rear lens is disposed in the adjusting member, and the compound lens is located at a side of the front lens facing away from the front lens.

Optionally, the adjustment structure further comprises a first connector; the connecting ring is positioned at the outer side of the transmission ring, the transmission ring is provided with a driving groove extending along the axial direction and the circumferential direction of the driving groove, the connecting ring is provided with a first limit groove extending along the axial direction of the connecting ring, and the first connecting piece is arranged in the first limit groove, the driving groove and the adjusting piece in a penetrating way;

when the transmission ring rotates, the first connecting piece moves in the first limiting groove along the axial direction of the connecting ring under the axial driving of the driving groove.

Optionally, the adjustment structure further comprises a second connector; the connecting ring is provided with a second limiting groove extending along the circumferential direction of the connecting ring, and the second connecting piece penetrates through the second limiting groove and is connected with the adjusting piece;

when the transmission ring rotates, the second connecting piece moves in the second limiting groove along the circumferential direction of the connecting ring.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the laser beam that the laser instrument sent shines to compound spectacle lens behind the beam combining lens group, and compound lens group sets up on the regulating part, and drive ring and go-between nest mutually, and the drive ring is connected with the regulating part, when rotating the drive ring, drive the relative go-between of drive ring drive regulating part along go-between axial displacement to can adjust regulating part at go-between axial position, and can avoid compound lens group to rotate, realize the synchronous regulation to preceding lens and compound spectacle lens, and do not influence the formation of image quality of compound spectacle lens, and then realize the optimization to the light path.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic view of an optical path of a laser projection device;

FIG. 2 is a schematic structural view of an adjustment structure according to an embodiment of the present disclosure;

FIG. 3 is a schematic exploded view of an adjustment structure according to an embodiment of the present disclosure;

FIG. 4 is a schematic partial cross-sectional view of an adjustment structure according to an embodiment of the present disclosure;

FIG. 5 is a schematic top view of a first view of an adjustment structure according to an embodiment of the present disclosure;

FIG. 6 is a schematic top view of a second view of an adjustment structure according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of a front lens according to an embodiment of the disclosure;

FIG. 8 is a schematic view of a drive ring according to an embodiment of the present disclosure;

fig. 9 is a partially disassembled schematic illustration of an adjustment structure according to an embodiment of the present disclosure.

FIG. 10 is a schematic diagram illustrating an assembly of an adjustment structure according to an embodiment of the present disclosure;

FIG. 11 is a second schematic assembly view of an adjustment structure according to an embodiment of the disclosure;

FIG. 12 is a third schematic assembly view of an adjustment structure according to an embodiment of the present disclosure;

fig. 13 is an assembled schematic view of an adjustment structure according to an embodiment of the present disclosure.

Wherein,

100. a laser; 200. a light combining lens group; 300. a combination lens group; 400. an adjustment structure;

1. an adjusting member; 11. a reference surface; 12. an axial limit surface; 13. a first fixing hole;

2. a connecting ring; 21. a first limit groove; 22. a positioning seat; 221. positioning holes; 23. a second fixing hole;

3. a drive ring; 31. a driving groove; 32. the second limit groove;

4. a front lens; 41. an anti-rotation positioning surface;

5. a compound spectacle lens;

6. a rear lens;

7. a first connector; 71. a first guide bracket; 72. a first fastener;

8. a second connector; 81. a second guide bracket; 82. a second fastener;

9. a base; 91. positioning columns; 92. a threaded hole;

10. and (5) a screw.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

Example 1

The optical path of the laser projection device is mainly that the laser 100 emits laser beams, and the laser beams irradiate onto the compound spectacle lens 5 after passing through the light combining lens set 200 and are concentrated on the fluorescent wheel after passing through the lens. At present, in the existing optical path design, the lens and the compound lens 5 are separately designed, so that the volume is increased, the variety of materials is increased, and the processing requirement on the fixing part of the compound lens 5 is increased, so that the cost is increased. In order to solve the above-mentioned problems, referring to fig. 1, in the conventional optical path design, the compound lens 5 and the lens are combined to form the combined lens group 300, so that the volume is reduced and the optical path can be optimized, but the inventor notes that the combined lens group 300 can only move back and forth relative to the fluorescent wheel and cannot rotate when adjusting due to the requirement of the compound lens 5 on the incident light, otherwise the imaging quality of the compound lens 5 is affected.

Based on the above considerations, the present inventors have made extensive studies to design a laser projection apparatus in order to adjust the front-rear position of the compound spectacle lens 5 with respect to the fluorescent wheel while ensuring that the compound spectacle lens 5 does not rotate. Specifically, as shown in fig. 2 to 13, the embodiment of the present disclosure provides a laser projection device, as shown in fig. 1 to 13, a laser 100, a lens combination group 200 and an adjustment structure 400, the adjustment structure 400 includes an adjustment member 1, a connection ring 2, a transmission ring 3 and a compound lens group, the compound lens group includes a front lens 4 and a compound lens 5, the compound lens 5 is connected to the front lens 4, and the front lens 4 is disposed in the adjustment member 1. The driving ring 3 is nested with the connecting ring 2, the driving ring 3 is connected with the adjusting piece 1, and the adjusting piece 1 is driven to axially move along the connecting ring 2 when the driving ring 3 rotates relative to the connecting ring 2.

Specifically, when the positions of the front lens 4 and the compound lens 5 need to be adjusted, the specific operation of the adjusting structure 400 is as follows: the driving ring 3 is rotated, and the adjusting piece 1 is driven to axially move along the connecting ring 2 through the driving ring 3, so that the front lens 4 and the compound lens 5 are driven to axially move along the connecting ring 2, the positions of the front lens 4 and the compound lens 5 are synchronously adjusted, and the imaging quality of the compound lens 5 is not affected.

It should be noted that the light combining lens set 200 includes two reflective sheets, that is, the laser beam emitted by the laser 100 is reflected by the two reflective sheets and then irradiates the compound spectacle lens 5.

As shown in fig. 3, in some embodiments, the compound lens group further includes a rear lens 6, the rear lens 6 is disposed in the adjustment member 1, and the fly-eye lens 5 is located on a side of the front lens 4 facing away from the rear lens 6.

That is, the fly's-eye lens 5 is located upstream of the front lens 4 and the front lens 4 is located upstream of the rear lens 6 in the propagation direction of the optical path, so that the optical path passes through the fly's-eye lens 5, then the front lens 4, and finally the rear lens 6. In addition, since the rear lens 6 is also embedded in the adjusting member 1, when the driving ring 3 is rotated, the front lens 4, the rear lens 6 and the compound lens 5 are adjusted synchronously in the axial direction of the connecting ring 2 by driving the adjusting member 1 to move in the axial direction of the connecting ring 2.

As shown in fig. 2 to 5, in some embodiments, the connecting ring 2 is located inside the driving ring 3, the connecting ring 2 is provided with a first limiting groove 21 extending along the axial direction of the connecting ring, and the driving ring 3 is provided with a driving groove 31 extending along the axial direction and the circumferential direction of the driving ring.

It should be understood that the first limiting groove 21 is a bar-shaped groove, and the length direction of the first limiting groove 21 is the axial direction of the connecting ring. The driving groove 31 may also be a bar-shaped groove, and when the driving groove 31 is a bar-shaped groove, one end thereof extends not only in the axial direction but also in the circumferential direction with respect to the other end. In addition, unless specified otherwise, the grooves described in this disclosure are all through-going grooves on both sides, for example, the drive groove 31 is through-going on both sides of the annular wall of the drive ring 3.

It should be appreciated that when the driving groove 31 extends in the circumferential and axial directions and is a bar-shaped groove, the length of the driving groove 31 may be curved, thereby making the driving groove 31 a curved groove.

The adjustment structure 400 further comprises a first connection piece 7. The first connecting piece 7 is arranged in the driving groove 31 and the first limiting groove 21 in a penetrating mode and is connected to the adjusting piece 1.

Specifically, one end of the first connecting member 7 sequentially passes through the driving slot 31 and the first limiting slot 21, and is further fixed to the adjusting member 1. The outer diameter of the first connecting piece 7 is smaller than or equal to the widths of the driving groove 31 and the first limiting groove 21, so that the first connecting piece 7 can move in the driving groove 31 and the first limiting groove 21 along the extending directions of the driving groove 31 and the first limiting groove 21 respectively.

For a further arrangement of the first connecting piece 7, a first fixing hole 13 may be formed on the outer wall of the adjusting piece 1, and one end of the first connecting piece 7 may be directly fixed in the first fixing hole 13.

When the transmission ring 3 rotates, the first connecting piece 7 moves along the radial direction of the connection ring 2 in the first limiting groove 21 under the axial driving of the driving groove 31.

Specifically, the transmission ring 3 rotates relative to the connection ring 2, and since the first connection member 7 is fixed to the adjustment member 1, the inner wall of the driving groove 31 is configured to press the first connection member 7 in the radial direction and the circumferential direction of the connection ring 2, so that the first connection member 7 tends to move in the radial direction and the circumferential direction of the connection ring 2. The first stopper groove 21 prevents the first coupling member 7 from moving in the circumferential direction, and allows the first coupling member 7 to move in the axial direction. Therefore, in the case where the transmission ring 3 rotates, the driving groove 31 plays a role of driving the first connecting member 7 to move in the axial direction, and the first limiting groove 21 plays a role of limiting the first connecting member 7 in the circumferential direction to finally move the first connecting member 7 in the axial direction of the connecting ring 2, thereby causing the first connecting member 7 to drive the adjuster 1 to move in the axial direction of the connecting ring 2.

Referring to fig. 2 to 6, in some embodiments, the adjusting structure 400 further includes a second connecting member 8, the driving ring 3 is provided with a second limiting groove 32 extending along a circumferential direction of the second connecting member, and the second connecting member 8 is disposed through the second limiting groove 32 and connected to the connecting ring 2.

Specifically, the width of the second limiting groove 32 is greater than or equal to the diameter of the second connecting piece 8, so that the second connecting piece 8 can move in the second limiting groove 32 along the extending direction of the second limiting groove 32.

When the transmission ring rotates, the second connecting piece 8 moves along the circumferential direction of the transmission ring 3 in the second limiting groove 32. At this time, the second stopper groove 32 acts as an obstacle to the movement of the drive ring 3 in the axial direction of the link ring 2 so that the relative position of the drive ring 3 remains unchanged when the drive ring 2 rotates on the link ring.

In order to ensure a reasonable layout, the width of the driving ring 3 may be set smaller, and in combination with the setting of the driving groove 31, the second limiting grooves 32 and the driving groove 31 may be arranged at intervals in the circumferential direction of the driving ring 3.

In combination with the above, for a specific arrangement of the widths of the driving groove 31 and the first limiting groove 21, see the following:

in some embodiments, the difference between the width of the driving groove 31 and the first limiting groove 21 and the outer diameter of the first connecting member 7 is smaller than a preset value. The setting conditions of the preset value may include: when the difference between the widths of the driving groove 31 and the first limiting groove 21 and the outer diameter of the first connecting member 7 is smaller than the preset value, the first connecting member 7 can move in the extending direction of the driving groove 31 and the first limiting groove 21 and cannot move in the width direction of the driving groove 31 and the first limiting groove 21.

By this arrangement, it is ensured that the first connecting piece 7 is moved only in the extending direction of the drive slot 31 and the first limit slot 21.

Similarly, for the arrangement of the second connecting piece 8 and the second limiting groove 32, reference may be made to the above arrangement, and the description thereof will not be repeated.

In connection with the above, as the setting of the extension length of the driving groove 31 and the first limiting groove 21, the following can be referred to:

the difference between the extension of the drive groove 31 in the axial direction of the drive ring 3 and the diameter of the first connection piece 7 is equal to the maximum displacement distance of the first connection piece 7. The difference between the extension length of the first limiting groove 21 in the axial direction and the diameter of the first connecting piece 7 is equal to the maximum moving distance of the first connecting piece 7.

Through this kind of setting scheme, can set up the length of drive slot 31 and first spacing groove 21 to comparatively suitable length, can carry out the restriction of position to first connecting piece 7, on the one hand avoid the fluting overlength to lead to the excessive motion of first connecting piece 7 and damage other parts. On the other hand, the first connecting member 7 is prevented from moving two short times due to too short a slot.

With reference to fig. 2 and 3, the driving ring 3 and the connecting ring 2 are in a closed annular structure with end to end, and when the driving ring 3 is sleeved on the connecting ring 2, the rotation center of the driving ring 3 can be coincident with the rotation center of the connecting ring 2, so that the driving ring 3 can rotate around the central axis of the connecting ring 2.

Referring to fig. 3 to 5, in some embodiments, the first connecting piece 7 includes a first guide bracket 71 and a first fastening piece 72, the first guide bracket 71 is disposed through the driving slot 31 and the first limiting slot 21, a first through hole is formed in the first guide bracket 71, the first fastening piece 72 is disposed through the first through hole and connected to the adjusting piece 1, and the first fastening piece 72 abuts against the first guide bracket 71.

That is, the first connecting piece 7 is formed by two parts, the first guiding bracket 71 is penetrated through the driving groove 31 and the first limiting groove 21 and is abutted against the adjusting piece 1, and the first fastening piece penetrates through the first guiding bracket 71 to be connected with the adjusting piece 1 and is abutted against the first guiding bracket 71, so that the first guiding bracket 71 is fixed relative to the adjusting piece 1.

Illustratively, in one specific implementation, referring to fig. 3, the first guide bracket 71 is a cylindrical structure, and the first guide bracket 71 is less than or equal to the width of the driving slot 31 and less than or equal to the width of the first limiting slot 21.

Illustratively, in one specific implementation, referring to fig. 3, the first fastener 72 may be selected as a screw, and the first fixing hole 13 on the adjusting member 1 is a first threaded hole that mates with the screw. Alternatively, the first fastener 72 may be a pin, where the adjusting member 1 is provided with a pin hole that is in interference fit with the pin.

Illustratively, in one specific implementation, the first guide bracket 71 is provided with a stop step in the first through hole, against which the head of the first fastener 72 abuts. At this time, the first fastening member 72 may be hidden in the first through hole, so as to avoid the first fastening member 72 from leaking out.

As shown in fig. 3 and fig. 4, the second connecting piece 8 includes a second guiding bracket 81 and a second fastening piece 82, the second guiding bracket 81 is penetrated in the second limiting groove 32, a second penetrating hole is formed in the second guiding bracket 81, the second fastening piece 82 is penetrated in the second penetrating hole and is connected to the connecting ring 2, and the second fastening piece 82 is pressed against the second guiding bracket 81.

That is, the second connecting piece 8 is formed by two parts, the second guiding bracket 81 is penetrated through the second limiting groove 32 and is abutted with the connecting ring 2, the second fastening piece 82 penetrates through the second guiding bracket 81 to be connected with the connecting ring 2 and is abutted against the second guiding bracket 81, so that the second guiding bracket 81 is fixed relative to the connecting ring 2.

Illustratively, in one specific implementation, referring to fig. 3 and 6, the second guide bracket 81 has a cylindrical structure, and an outer diameter of the second guide bracket 81 is less than or equal to a width of the second limiting groove 32.

Illustratively, in a specific implementation, the second fastening member 82 may be selected as a screw, and the connection ring 2 is provided with a second fixing hole 23 that is matched with the screw, and the second fixing hole 23 is a threaded hole. Alternatively, the second fastener 82 may be a pin, where the connecting ring 2 is provided with a pin hole that is in interference fit with the pin.

Illustratively, in one specific implementation, the second guide bracket 81 is provided with a limiting step in the second through hole, and the head of the second fastener 82 abuts against the limiting step. At this time, the second fastening member 82 may be hidden in the second through hole, so as to avoid leakage of the second fastening member 82.

In a specific implementation manner, referring to fig. 2 to 4, the driving ring 3, the connecting ring 2 and the adjusting member 1 are all in a circular ring structure, the connecting ring 2 is located between the adjusting member 1 and the driving ring 3, and the driving ring 3 is located at the outermost side, the outer side surface of the connecting ring 2 is attached to the inner side surface of the driving ring 3, and the inner side surface of the connecting ring 2 is attached to the outer side surface of the adjusting member 1, so that the adjusting member 1, the connecting ring 2 and the driving ring 3 are tightly attached to each other, and the influence of shaking between adjacent two is avoided.

As shown in fig. 3 to 6, in some embodiments, the driving ring 3 is provided with a plurality of driving grooves 31 and a plurality of second limiting grooves 32, and a driving groove 31 is disposed between two adjacent second limiting grooves 32 in the axial direction of the driving ring 3.

Through setting up a plurality of drive grooves 31 and a plurality of second spacing groove 32, a plurality of first connecting pieces 7 and second connecting piece 8 of cooperation can improve the effort to regulating part 1 when rotating drive ring 3 to be convenient for adjust regulating part 1's position, and then realize the regulation to front lens 4, rear lens 6 and compound spectacle lens 5 position.

Illustratively, in a specific implementation, as shown in fig. 3, three driving grooves 31 and three second limiting grooves 32 are provided, and three corresponding first connecting members 7 and three corresponding second connecting members 8 are provided. It can be understood that at this time, the three first connecting pieces 7 are distributed in a triangle shape, and the three second connecting pieces 8 are also distributed in a triangle shape, which is beneficial to ensuring the overall stability of the laser projection device. Alternatively, the number of the driving grooves 31 and the second limiting grooves 32 may be two or more.

Thus, when the driving ring 3 is rotated, the driving ring 3 rotates relative to the connecting ring 2, the driving ring 3 pushes the three first connecting pieces 7 to move in the first limiting groove 21 in the rotating process, and the first connecting pieces 7 are connected with the adjusting piece 1, so that the three first connecting pieces 7 drive the adjusting piece 1 to synchronously move, the second connecting pieces 8 are positioned in the second limiting groove 32, the driving ring 3 has no acting force on the second connecting pieces 8, and therefore, the second connecting pieces 8 are kept stationary, and meanwhile, the connecting ring 2 is kept stationary. That is, the rotation of the drive ring 3 only drives the adjustment element 1 to move in the extension direction of the first limiting groove 21.

In summary, in the laser projection device provided by the disclosure, the laser beam emitted by the laser 100 irradiates the compound lens 5 through the beam combining lens 200, the compound lens 5 is connected with the front lens 4 as a whole, the front lens 4 is arranged on the adjusting member 1, the transmission ring 3 is nested with the connecting ring 2, the transmission ring 3 is connected with the adjusting member 1, when the transmission ring 3 rotates, the transmission ring 3 drives the adjusting member 1 to axially move along the connecting ring 2 when rotating relative to the connecting ring 2, so that the position of the adjusting member 1 on the axial direction of the connecting ring 2 can be adjusted, the rotation of the compound lens 5 is avoided, the synchronous adjustment of the front lens 4 and the compound lens 5 is realized, the imaging quality of the compound lens 5 is not influenced, and the optimization of the optical path is further realized.

As shown in fig. 7 and 8, in some embodiments, the front lens 4 has an anti-rotation positioning surface 41 on the outer periphery, the adjusting member 1 has a ring-shaped structure, and the inner side of the adjusting member 1 has a reference surface 11 capable of being attached to the anti-rotation positioning surface 41.

That is, the front lens 4 is positioned by the anti-rotation positioning surface 41 and the reference surface 11 when being mounted in the adjusting member 1, so that the accuracy of the mounting position of the front lens 4 is improved, and the front lens 4 can be prevented from rotating in the adjusting member 1 by matching the anti-rotation positioning surface 41 with the reference surface 11, so that the front lens 4 is prevented from being misplaced to affect optical imaging.

Illustratively, in a specific implementation, referring to fig. 7 and 8, the rotation preventing positioning surface is an arc concave surface, the reference surface 11 is an arc convex surface, and the cooperation of the arc concave surface and the arc convex surface prevents the front lens 4 from rotating in the adjusting member 1. Alternatively, the rotation preventing locating surface 41 and the reference surface 11 may each also be provided as a flat surface.

Illustratively, in one specific implementation, referring to fig. 7 and 8, the anti-rotation locating surface and the datum surface 11 are each provided with one. That is, the front lens 4 and the adjusting member 1 are positioned relative to each other by an anti-rotation positioning surface 41 and a reference surface 11. Alternatively, the rotation preventing positioning surface 41 and the reference surface 11 may be provided in plural numbers and in one-to-one correspondence.

In addition, the front lens 4 and the adjusting member 1 are provided with dimensional tolerances to ensure that the front lens 4 can also be fitted into the adjusting member 1 at its upper tolerance limit.

Illustratively, in a specific implementation, referring to fig. 8, the adjusting member 1 is provided inside with an axial limiting surface 12 limiting the front lens 4 in its axial direction, and the front lens 4 abuts against the axial limiting surface 12. By arranging the axial limiting surface 12, the front lens 4 is limited in the axial direction of the adjusting piece 1, and the accurate installation position of the front lens 4 is further ensured.

Illustratively, in one specific implementation, both the front lens 4 and the rear lens 6 are mounted within the adjuster 1 by adhesive bonding.

As shown in fig. 9, in some embodiments, the adjusting structure 400 further includes a base 9, the transmission ring 3 is supported on the base 9, and the connection ring 2 has a positioning seat 22 connected to the base 9.

That is, the adjusting member 1 is connected to the base 9 through the positioning seat 22, and the driving ring 3 is supported on the base 9. The adjustment member 1, the connecting ring 2 and the drive ring 3 are supported and positioned by means of a base 9.

In some embodiments, one of the base 9 and the positioning seat 22 is provided with a positioning post 91, and the other is provided with a positioning hole 221 into which the positioning post 91 protrudes. The accurate installation of the base 9 and the positioning seat 22 is realized by the cooperation of the positioning column 91 and the positioning hole 221.

Illustratively, in one specific implementation, referring to fig. 9, the base 9 is provided with a positioning post 91, and the positioning seat 22 is provided with a positioning hole 221.

Illustratively, in a specific implementation, referring to fig. 9, two positioning posts 91 are provided on the base 9, two positioning holes 221 are provided on the corresponding positioning seat 22, and the two positioning posts 91 and the two positioning holes 221 are in one-to-one correspondence. The positioning effect between the base 9 and the positioning seat 22 can be improved.

Illustratively, in a specific implementation, the base 9 and the positioning seat 22 further have positioning planes that cooperate with each other, and the positioning planes have a smaller flatness, so as to ensure that the lens 6 does not tilt after the base 9 and the positioning seat 22 are mounted, thereby affecting optical imaging.

In some embodiments, the base 9 and the positioning seat 22 are detachably connected, and the base 9 is provided with a bearing surface which can be jointed with the surface of the transmission ring 3. Thus, the supporting effect of the driving ring 3 is improved, and the driving ring 3 is prevented from tilting.

Illustratively, in a specific implementation, as shown in fig. 9, in both the base 9 and the positioning seat 22, the positioning seat 22 is provided with a light hole, the base 9 is provided with a threaded hole 92, and the screw 10 passes through the light hole and is in threaded connection with the threaded hole 92. That is, the base 9 and the positioning seat 22 are connected by the screw 10, which is convenient for assembly and disassembly.

Illustratively, in a specific implementation, as shown in fig. 9, the bearing surface is an arc-shaped surface capable of being matched with the outer peripheral surface of the driving ring 3, so that not only the driving ring 3 can be stably supported, but also the friction force during rotation of the driving ring 3 can be reduced.

The assembly process of the adjustment structure 400 will be described in detail below.

As shown in fig. 7, the front lens 4 and the compound lens 5 are assembled such that the front lens 4 and the compound lens 5 are connected as one body.

As shown in fig. 10, the front lens 4 and the rear lens 6 are both mounted in the adjuster 1, the front lens 4 and the rear lens 6 are respectively located at both axial ends of the adjuster 1, and the fly's-eye lens 5 is located at a side of the front lens 4 facing away from the rear lens 6, and the front lens 4, the fly's-eye lens 5, the rear lens 6 and the adjuster 1 form a first assembly.

As shown in fig. 10 and 11, the first component is placed in the connection ring 2 such that the first limiting groove 21 of the connection ring 2 is aligned with the first fixing hole 13 on the adjustment member 1, and the front lens 4, the fly's eye lens 5, the rear lens 6, and the adjustment member 1 and the connection ring 2 forming the first component form the second component.

As shown in fig. 11 and 12, the second assembly is placed in the drive ring 3 with the drive slot 31 aligned with the first limit slot 21 and the second limit slot 32 aligned with the second fixing hole 23, the second assembly and the drive ring 3 forming a third assembly.

As shown in fig. 12 and 13, the first guide bracket 71 of the first connecting member 7 passes through the driving groove 31 and the first limiting groove 21 and abuts against the adjusting member 1, and then the first fastener 72 passes through the first through hole to connect with the adjusting member 1 and abuts against the first guide bracket 71;

the second guide bracket 81 of the second connecting piece 8 passes through the second limit groove 32 and is abutted against the connecting ring 2, and then the second fastening piece 82 passes through the second penetrating hole to be connected with the connecting ring 2 and is abutted against the second guide bracket 81;

the third component, the first connection piece 7 and the second connection piece 8 form a fourth component.

As shown in fig. 9, the base 9 and the positioning seat 22 on the connecting ring 2 are positioned by the positioning post 91 and the positioning hole 221, and are connected by the screw 10, and the driving ring 3 is supported on the base 9.

The fourth component and the base 9 constitute the final state of the adjustment structure 400, as shown in fig. 2.

As shown in fig. 5 and 6, after the installation, the first connector 7 of the adjusting structure 400 is located at a middle position in the extending direction of the driving slot 31, and the second connector 8 is located at a middle position in the extending direction of the second limiting slot 32. In this way, the position of the adjusting member 1 in the extending direction of the first stopper groove 21 can be adjusted when the drive ring 3 is rotated clockwise, and the position of the adjusting member 1 in the extending direction of the first stopper groove 21 can be adjusted when the drive ring 3 is rotated counterclockwise, however, the moving direction of the adjusting member 1 is opposite when the drive ring 3 is rotated clockwise and rotated counterclockwise.

That is, when the drive ring 3 is rotated clockwise, the adjuster 1 is moved in the first direction, and at this time, the front lens 4, the compound lens 5, and the rear lens 6 are moved in the first direction; when the drive ring 3 is rotated counterclockwise, the adjuster 1 moves in the second direction, and at this time, the front lens 4, the compound lens 5, and the rear lens 6 move in the first direction, which is opposite to the second direction. Thus, the two-way adjustment of the position of the adjusting piece 1 in the extending direction of the first limiting groove 21 can be realized, and the usability is improved.

Of course, in other embodiments, the first connecting member 7 may be located at one end of the driving slot 31 in the extending direction, and the second connecting member 8 may be located at one end of the second limiting slot 32 in the extending direction, so that the position of the adjusting member 1 can be adjusted only in one direction when the first adjustment is performed after the installation is completed.

In some embodiments, the laser projection device further includes a housing (not shown in the drawings), the housing is covered on the driving ring 3, and a first limiting groove 21 for rotating the driving ring 3 is provided on the housing.

That is, the first limiting groove 21 is covered by the case, so that the dustproof effect can be achieved, and the front lens 4, the rear lens 6, and the fly's-eye lens 5 can be protected. And by arranging the first limiting groove 21, the driving ring 3 is convenient to rotate, so that the positions of the front lens 4, the compound spectacle lens 5 and the rear lens 6 are synchronously adjusted.

In addition, a detachable sealing plug may be disposed in the first limiting groove 21, so that the first limiting groove 21 is plugged by the sealing plug after the positions of the front lens 4, the compound spectacle lens 5 and the rear lens 6 are adjusted, so that dust is prevented from entering the housing through the first limiting groove 21.

Example two

The laser projection apparatus provided in the embodiment of the present disclosure is substantially the same as that in the first embodiment, except that:

the connecting ring 2 of the adjusting structure 400 is located outside the driving ring 3, driving grooves extending along the axial direction and the circumferential direction of the driving ring 3 are formed in the driving ring 3, first limiting grooves extending along the axial direction of the driving ring 2 are formed in the connecting ring 2, and the first connecting piece 7 penetrates through the first limiting grooves and the driving grooves and is connected to the adjusting piece 1. When the driving ring 3 rotates relative to the connecting ring 2, the first connecting piece 7 moves along the axial direction of the connecting ring 2 in the first limiting groove under the axial driving of the driving groove.

In addition, the connecting ring 2 is provided with a second limiting groove extending along the circumferential direction of the connecting ring, and the second connecting piece 8 is arranged in the second limiting groove in a penetrating manner and is connected with the transmission ring 3. Thus, when the transmission ring 3 rotates, the second connecting piece 8 moves in the second limiting groove along the circumferential direction of the connection ring 2, and at this time, the second limiting groove acts as a barrier to the movement of the transmission ring 3 in the axial direction of the connection ring 2, so that the relative position of the transmission ring 3 when rotating on the connection ring 2 remains unchanged.

That is, the position of the transmission ring 3 in the adjustment structure 400 of the laser projection apparatus in the present embodiment is different from that of the transmission ring 3 in the adjustment structure 400 in the first embodiment. In the embodiment, the driving ring 3 is located between the connecting ring 2 and the adjusting member 1, and the driving ring 3 is provided with a driving groove and a second fixing hole, the second fixing hole is connected with the second connecting member 8, and the connecting ring 2 is provided with a first limit groove and a second limit groove.

The rest of the structures of the laser projection device provided in the embodiment of the present disclosure are the same as those of the laser projection device in the first embodiment, and will not be described here again.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The laser projection device is characterized by comprising a laser, a light combining lens group and an adjusting structure, wherein the adjusting structure comprises an adjusting piece, a connecting ring, a driving ring and a compound lens group, the compound lens group comprises a front lens and a compound lens, the compound lens is connected with the front lens, the front lens is arranged on the adjusting piece, the driving ring and the connecting ring are nested, the driving ring is connected with the adjusting piece, and the driving ring drives the adjusting piece to axially move along the connecting ring when rotating relative to the connecting ring;

and the laser beam emitted by the laser irradiates the compound spectacle lens after passing through the light converging lens group.

2. The laser projection device of claim 1, wherein the adjustment structure further comprises a first connector; the connecting ring is positioned at the inner side of the transmission ring, a first limit groove extending along the axial direction of the connecting ring is formed in the connecting ring, a driving groove extending along the axial direction and the circumferential direction of the driving ring is formed in the driving ring, and the first connecting piece penetrates through the driving groove and the first limit groove and is connected with the adjusting piece;

when the transmission ring rotates, the first connecting piece moves in the first limiting groove along the axial direction of the connecting ring under the axial driving of the driving groove.

3. The laser projection device of claim 2, wherein the first connecting member includes a first guide bracket and a first fastener, the first guide bracket is disposed through the driving slot and the first limiting slot, a first through hole is formed in the first guide bracket, the first fastener is disposed through the first through hole and connected to the adjusting member, and the first fastener is pressed against the first guide bracket.

4. The laser projection device of claim 2, wherein the adjustment structure further comprises a second connector; the driving ring is provided with a second limiting groove extending along the circumferential direction of the driving ring, and the second connecting piece is arranged in the second limiting groove in a penetrating manner and is connected with the connecting ring;

when the transmission ring rotates, the second connecting piece moves in the second limiting groove along the circumferential direction of the transmission ring.

5. The laser projection device of claim 4, wherein the second connecting member includes a second guiding bracket and a second fastening member, the second guiding bracket is disposed through the second limiting groove, a second through hole is formed in the second guiding bracket, the second fastening member is disposed through the second through hole and connected to the connecting ring, and the second fastening member is pressed against the second guiding bracket.

6. The laser projection device of claim 4, wherein the driving ring is provided with a plurality of driving grooves and a plurality of second limiting grooves, and one driving groove is arranged between two adjacent second limiting grooves in the circumferential direction of the driving ring.

7. The laser projection device as claimed in claim 1, wherein the front lens has an anti-rotation positioning surface on an outer periphery thereof, the regulating member has a ring-shaped structure, and a reference surface capable of being attached to the anti-rotation positioning surface is provided on an inner side of the regulating member;

and/or the inner side of the adjusting piece is provided with an axial limiting surface which is used for limiting the front lens in the axial direction of the adjusting piece, and the front lens is abutted against the axial limiting surface.

8. The laser projection device of claim 1, wherein the compound lens group further comprises a rear lens disposed within the adjustment member, the fly's eye lens being located on a side of the front lens facing away from the front lens.

9. The laser projection device of claim 1, wherein the adjustment structure further comprises a first connector; the connecting ring is positioned at the outer side of the transmission ring, the transmission ring is provided with a driving groove extending along the axial direction and the circumferential direction of the driving groove, the connecting ring is provided with a first limit groove extending along the axial direction of the connecting ring, and the first connecting piece is arranged in the first limit groove, the driving groove and the adjusting piece in a penetrating way;

when the transmission ring rotates, the first connecting piece moves in the first limiting groove along the axial direction of the connecting ring under the axial driving of the driving groove.

10. The laser projection device of claim 9, wherein the adjustment structure further comprises a second connector; the connecting ring is provided with a second limiting groove extending along the circumferential direction of the connecting ring, and the second connecting piece penetrates through the second limiting groove and is connected with the adjusting piece;

when the transmission ring rotates, the second connecting piece moves in the second limiting groove along the circumferential direction of the connecting ring.