CN214474167U

CN214474167U - Lens module and projection equipment

Info

Publication number: CN214474167U
Application number: CN202120236722.2U
Authority: CN
Inventors: 王小强; 赵文; 尹蕾
Original assignee: Chengdu Jimi Technology Co Ltd
Current assignee: Chengdu Jimi Technology Co Ltd; Chengdu XGIMI Technology Co Ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-10-22
Anticipated expiration: 2031-01-27

Abstract

The utility model provides a camera lens module and projection equipment relates to optical projection technical field, and this camera lens module includes the lens cone and sets up the diaphragm in the lens cone, and the lens cone has one and leads to the light mouth, and the diaphragm is located one side at least of lens cone inner wall, and the integrative setting of diaphragm and lens cone. The utility model discloses a lens module of an organic whole setting can be so that lens cone and diaphragm integrated into one piece simultaneously, reduces man-hour and cost, and the relative position between diaphragm and the lens cone has been guaranteed to integrative design simultaneously, and the precision is high for the equipment size of diaphragm is more stable. And the use of gum is avoided, the risk of gum volatilization can be avoided, and the reliability of the lens is improved.

Description

Lens module and projection equipment

Technical Field

The utility model relates to an optical projection technical field particularly, relates to a lens module and projection equipment.

Background

In order to improve the contrast ratio of the existing projection equipment/optical machine products on the market, diaphragms with corresponding shapes are required to be added in lens barrels, and most of the diaphragms of the lens barrels are assembled with the lens barrels by adopting independent parts so as to improve the contrast ratio of the optical machine.

The inventor researches and discovers that the current common schemes on the market all adopt the independent design of the diaphragm and use the screw, the glue dispensing or the gum to lock and fix on the lens cone so as to form the shelter in the lens cone. This split fixing method adds a separate part, requires separate locking of the diaphragm, and increases the working hours and cost. In addition, if the diaphragm on the market is fixed in an adhesive-backed mode, the risk of volatilization exists, the reliability of the lens is reduced, and the light blocking size of the diaphragm in an assembled state is not stable enough by the adhesive-backed scheme.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a camera lens module and projection equipment, it can reduce man-hour and cost, makes the equipment size of diaphragm more stable simultaneously to can avoid the volatile risk of gum, improve the reliability of camera lens.

The embodiment of the utility model is realized like this:

in a first aspect, the present invention provides a lens module, which comprises a lens barrel and a diaphragm arranged in the lens barrel, wherein the lens barrel has a light opening, the diaphragm is arranged on at least one side of the inner wall of the lens barrel, and the diaphragm and the lens barrel are integrally arranged.

In an alternative embodiment, the diaphragm is arcuate and blocks part of the light-passing opening.

In an alternative embodiment, the diaphragm is annular and blocks part of the light-passing opening.

In an alternative embodiment, the light shielding area of the diaphragm is less than or equal to half of the light transmission area of the light transmission port.

In an alternative embodiment, a side edge of the diaphragm close to the center of the light through opening is provided with a demoulding slope.

In an alternative embodiment, the diaphragm is disposed obliquely to an end of the barrel.

In an optional embodiment, a joint of the diaphragm and the inner wall of the lens barrel is provided with a reinforcing rib, and the reinforcing rib is respectively connected with the diaphragm and the inner wall of the lens barrel.

In an optional embodiment, the lens barrel is a plastic lens barrel, and the lens barrel and the diaphragm are integrally injection-molded.

In an optional embodiment, the lens module further includes a lens, a supplementary point bearing structure is disposed on an inner side of the lens barrel, and the lens is disposed on the supplementary point bearing structure.

In an optional embodiment, each of the supplementary point bearing structures is further provided with a glue dispensing groove, and the glue dispensing groove is filled with glue for fixing the lens.

In an optional embodiment, the supplementary bearing structure includes an annular step and a bearing boss, the annular step is located inside the lens barrel, and the bearing boss is located on a mesa of the annular step and is arranged in a protruding manner relative to the mesa of the annular step.

In an alternative embodiment, the outer circumferential surface of the lens barrel is provided with a reinforcing grid structure.

In an alternative embodiment, the reinforcing grid structure is provided with screw holes.

In a second aspect, the present invention provides a projection apparatus, which includes a projection main body and a lens module according to any one of the foregoing embodiments, wherein the lens barrel is disposed on the projection main body.

The utility model discloses beneficial effect includes:

the utility model provides a lens module sets up the diaphragm in at least one side of the inner wall of lens cone, and the integrative setting of diaphragm and lens cone. Adopt the integrative lens module that sets up, can be so that lens cone and diaphragm integrated into one piece simultaneously, reduce man-hour and cost, the relative position between diaphragm and the lens cone has been guaranteed to integrative design simultaneously, and the precision is high for the equipment size of diaphragm is more stable. And the use of gum is avoided, the risk of gum volatilization can be avoided, and the reliability of the lens is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a lens module according to a first embodiment of the present invention at a first viewing angle;

fig. 2 is a schematic cross-sectional view of a lens module according to a first embodiment of the present invention;

FIG. 3 is an enlarged partial view of III of FIG. 2;

fig. 4 is a schematic structural diagram of a lens module according to a second view angle according to a first embodiment of the present invention;

fig. 5 is a schematic structural diagram of a lens module according to a second embodiment of the present invention.

Icon:

100-a lens module; 110-a lens barrel; 111-light through port; 130-a diaphragm; 131-demoulding inclined plane; 133-reinforcing ribs; 150-a lens; 170-supplement bearing structure; 171-glue dispensing groove; 190-reinforcing the grid structure; 191-screw holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As disclosed in the background art, in the lens module of the existing optical machine, the diaphragm and the lens barrel are usually separately arranged, and the diaphragm and the lens barrel are two independent parts during manufacturing, and are manufactured separately and assembled together finally, and the assembling mode may be a connecting member such as a screw or an adhesive tape. When adopting connecting pieces such as screw to install, need set up the screw in diaphragm and lens cone inside for the structure of diaphragm and lens cone is complicated, and pack into this screw with connecting pieces such as screw, realize locking alone to the diaphragm and attach, increased the process undoubtedly for man-hour and cost greatly increased. When the mode that adopts gum to bond is fixed, then there is the volatile risk of gum still, can influence the transmissivity of light after the gum volatilizes, and then reduced the reliability of camera lens. Further, in the gum solution, since the gum water amount is difficult to control, the diaphragm in the assembled state cannot be accurately positioned, so that the light blocking size of the diaphragm is not stable enough.

In order to solve the problem, the utility model provides a novel lens module, it can reduce man-hour and cost, makes the equipment size of diaphragm more stable simultaneously to can avoid the volatile risk of gum, improve the reliability of camera lens. It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

First embodiment

Referring to fig. 1 to 4, the present embodiment provides a lens module 100, which can reduce the man-hour and cost, and make the assembly size of the diaphragm 130 more stable, and can avoid the risk of gum volatilization, thereby improving the reliability of the lens.

The lens module 100 provided by this embodiment includes a lens barrel 110, a diaphragm 130 and a lens 150, wherein the diaphragm 130 is disposed in the lens barrel 110, the lens barrel 110 has a light-passing opening 111, the diaphragm 130 is located on at least one side of an inner wall of the lens barrel 110, and the diaphragm 130 and the lens barrel 110 are integrally disposed. The lens 150 is disposed in the lens barrel 110, and the diaphragm 130 and the lens 150 partially overlap in the light exiting direction, and the diaphragm 130 is used for blocking the light exiting.

It should be noted that, the lens module 100 in this embodiment is suitable for a projection apparatus, the lens barrel 110 is disposed on a projection main body, the lens 150 may be multiple, and the multiple lenses 150 are coaxially disposed in the lens barrel 110. The projection main body is provided with a light source, light emitted by the light source is emitted after passing through the lens 150, the diaphragm 130 is arranged in the middle of the lens barrel 110 in the embodiment, so that the light is shielded, and the specific working principle can refer to the existing diaphragm 130 structure. Of course, the lens module 100 can also be applied to other optical devices having the stop 130, such as a camera, a monitor, etc., and is not limited herein.

It should be noted that, in the present embodiment, the lens barrel 110 is a cylindrical structure, so that the cross section of the light passing opening 111 is circular, and the side of the inner wall of the lens barrel 110 mentioned herein refers to a side of any diameter line segment on the circumference of the inner wall of the lens barrel 110, that is, refers to a local line arc on the circumference of the lens barrel 110, for example, an edge position corresponding to an arc smaller than 1/2 on the circumference of the inner wall of the lens barrel 110. Of course, when the lens barrel 110 is polygonal, one side of the inner wall of the lens barrel 110 refers to the edge of the side thereof, and will not be described in detail herein.

In this embodiment, the lens barrel 110 is a plastic lens barrel 110, the lens barrel 110 and the diaphragm 130 are integrally injection molded, and the diaphragm 130 protrudes from the inner sidewall of the lens barrel 110 toward the center of the lens barrel 110. Specifically, the lens barrel 110 and the diaphragm 130 are integrally injection-molded, so that the assembling processes are reduced, the working hours and the cost are reduced, the injection-molded size is easier to control, the assembling size of the diaphragm 130 is more stable, the risk of gum volatilization can be avoided, and the reliability of the lens is improved. Of course, the lens barrel 110 and the diaphragm 130 may be made of other materials such as metal or alloy, and are not limited in this regard.

It should be noted that, in this embodiment, the lens barrel 110 is cylindrical, the center of the lens barrel 110 mentioned in this embodiment refers to a geometric central line of the lens barrel 110, i.e., a central line of the plurality of lenses 150, which is also a light-emitting axis of the light source, and the diaphragm 130 protrudes toward the center of the lens barrel 110, so as to play a role in blocking light.

In the present embodiment, the light shielding area of the diaphragm 130 is smaller than half of the light transmission area of the light transmission opening 111. Specifically, the lens barrel 110 has a light-passing opening 111, and the diaphragm 130 is arcuate and blocks part of the light-passing opening 111. Specifically, the cross section of the light-passing opening 111 is circular, the arc formed by the diaphragm 130 is a minor arc, the light-passing opening 111 is the smallest diameter position of the inner peripheral surface of the lens barrel 110, the light-passing opening 111 is located at the middle position of the lens barrel 110 in the embodiment, and the diaphragm 130 is also arranged at the light-passing opening 111 and protrudes towards the center of the light-passing opening 111 to play a role of shielding the light-passing opening 111. Of course, in other preferred embodiments, the light shielding area of the diaphragm 130 may be set to be equal to or slightly more than half of the light transmission area of the light transmission opening 111, and is not limited in particular.

Note that, in the present embodiment, the diaphragm 130 has a shape of a minor arc and is located on one side of the inner wall of the lens barrel 110, and is integrally provided on the inner wall of the lens barrel 110 at the light passing port 111. The diaphragm 130 partially blocks the light-passing opening 111, so that the non-blocked area of the light-passing opening 111 forms a major arc arch shape, and light emission is realized.

It should be noted that the light transmission area of the light transmission opening 111 mentioned in the present embodiment refers to the light transmission area of the light transmission opening 111 in the light outgoing direction, that is, the area of the portion not blocked by the diaphragm 130.

In the present embodiment, one side edge of the diaphragm 130 near the center of the light-passing opening 111 is provided with a mold-release slope 131. Specifically, the diaphragm 130 has a minor arc shape and has a chord edge and an arc edge, wherein the arc edge is located on the inner wall of the lens barrel 110 and is formed by a joining line between the diaphragm 130 and the inner wall of the lens barrel 110, the chord edge faces the center of the light passing opening 111, and the mold release slope 131 is provided on the chord edge. Through setting up drawing of patterns inclined plane 131, can make things convenient for the diaphragm 130 drawing of patterns, carry out drawing of patterns processing when being favorable to diaphragm 130 and lens cone 110 injection moulding.

In this embodiment, a rib 133 is disposed at a connection portion between the diaphragm 130 and the inner wall of the barrel 110, and the rib 133 is connected to the diaphragm 130 and the inner wall of the barrel 110 respectively. Specifically, the rib 133 is integrally provided at one side surface of the diaphragm 130 and extends to the arc edge of the diaphragm 130, so that the thickness of the diaphragm 130 at the arc edge is increased to increase the coupling strength at the arc edge.

In this embodiment, the inner side of the lens barrel 110 is provided with a supplementary point bearing structure 170, and the lens 150 is disposed on the supplementary point bearing structure 170. Specifically, the plurality of spot supporting structures 170 are provided, and the plurality of spot supporting structures 170 are disposed at intervals on the inner circumferential surface of the lens barrel 110, so that the plurality of lenses 150 can be simultaneously mounted or the positions of the lenses 150 can be adjusted. The spot-compensating bearing structure 170 includes an annular step and a bearing boss, and the bearing boss is located on and raised relative to the mesa of the annular step and plays a role of bearing the edge of the lens 150. Meanwhile, the annular steps of the plurality of spot receiving structures 170 have different diameters, so that a plurality of lenses 150 having different sizes can be mounted. By providing the supplement point bearing structure 170, it is possible to ensure that the lens 150 is placed with high accuracy, and the mounting accuracy of the lens 150 is ensured.

In this embodiment, each spot-filling bearing structure 170 is further provided with a dispensing groove 171, and the dispensing groove 171 is filled with glue for fixing the lens 150. Specifically, the glue dispensing groove 171 is arranged on the annular step, two glue dispensing grooves 171 are at least uniformly distributed on the same annular step, the glue dispensing groove 171 is arranged, glue is filled to fix the lens 150, all the lenses 150 are fixed through the glue, and the cost is greatly reduced.

In other preferred embodiments of the present invention, an elastic supporting member may be disposed on the supplementary point bearing structure 170, and the lens 150 is assembled in place through the deformation of the elastic supporting member, thereby achieving interference fit.

In the present embodiment, the outer circumferential surface of the lens barrel 110 is provided with a reinforcing lattice structure 190. Specifically, by arranging the reinforcing grid structure 190, the structural strength of the lens barrel 110 is improved, and meanwhile, the reinforcing grid structure 190 is also provided with connecting structures such as screw holes 191 in an adaptive manner, so that the lens barrel 110 is conveniently mounted on a projection main body or an external shell.

In summary, the lens module 100 provided in this embodiment can reduce the working hours and the cost through the lens barrel 110 and the diaphragm 130 integrally disposed, and meanwhile, the assembly size of the diaphragm 130 is more stable, and the risk of volatilization of the back glue can be avoided, thereby improving the reliability of the lens.

Second embodiment

Referring to fig. 5, the basic structure and principle of the lens module 100 and the technical effects thereof are the same as those of the first embodiment, and for the sake of brief description, reference may be made to corresponding contents of the first embodiment for the sake of brevity.

The lens module 100 includes a barrel 110 and a diaphragm 130 disposed in the barrel 110, the diaphragm 130 has a light-passing opening 111, the diaphragm 130 is disposed on at least one side of an inner wall of the barrel 110, and the diaphragm 130 and the barrel 110 are integrally disposed. The lens 150 is disposed in the lens barrel 110, and the diaphragm 130 and the lens 150 partially overlap in the light exiting direction, and the diaphragm 130 is used for blocking the light exiting.

In this embodiment, the diaphragm 130 is annular and located on the inner circumferential surface of the lens barrel 110, the middle of the lens barrel 110 has the light passing opening 111, the diaphragm 130 is disposed around the inner wall of the lens barrel 110 at the light passing opening 111, the diaphragm 130 partially blocks the light passing opening 111, the non-blocked portion is also circular, and the blocking effect is achieved by the annular diaphragm 130.

In this embodiment, the diaphragm 130 has an inner ring edge and an outer ring edge, the outer ring edge is formed by a junction line of the diaphragm 130 and the inner wall of the lens barrel 110, the inner ring edge is close to the center of the light through opening 111, the inner ring edge and the outer ring edge are not coplanar and are parallel to each other, the diaphragm 130 is inclined towards the light emitting direction as a whole, namely, the inner ring edge is closer to the light emitting opening of the lens barrel 110 relative to the outer ring edge, so that the diaphragm 130 is inclined towards the end of the lens barrel 110, through the inclined diaphragm 130, demolding can be facilitated, and the diaphragm 130 and the lens barrel 110 can be manufactured conveniently.

It should be noted that the lens module 100 in the present embodiment can also be used for light incidence, that is, the stop 130 can also be used for blocking light incidence. Specifically, the diaphragm 130 is entirely inclined towards the light incident direction, that is, the edge of the inner ring is closer to the light incident opening of the lens barrel 110 than the edge of the outer ring, and the diaphragm 130 arranged in an inclined manner can facilitate demolding, thereby facilitating the manufacture of the diaphragm 130 and the lens barrel 110.

Third embodiment

The present embodiment provides a projection apparatus including a projection main body and a lens module 100 as provided in the first embodiment or the second embodiment.

In this embodiment, the projection apparatus further includes a housing, the projection main body and the lens module 100 are both accommodated in the housing, the lens module 100 includes a lens barrel 110, a diaphragm 130 and a lens 150, the diaphragm 130 is disposed in the lens barrel 110, the diaphragm 130 is located on at least one side of an inner wall of the lens barrel 110, and the diaphragm 130 and the lens barrel 110 are integrally disposed. The lens 150 is disposed in the lens barrel 110, and the diaphragm 130 and the lens 150 partially overlap in the light exiting direction, and the diaphragm 130 is used for blocking the light exiting. The lens barrel 110 is disposed on the projection main body.

In this embodiment, the outer circumferential surface of the lens barrel 110 is provided with a reinforcing grid structure 190, and the reinforcing grid structure 190 is provided with screw holes 191, so that the lens barrel 110 can be fixed on the projection body by a connector such as a screw. The projection main body is provided with a light source which can be an LED or a laser light source and the like.

It should be noted that, the projection apparatus in this embodiment is an optical machine product for implementing a projection function, and the specific type of the projection apparatus is not limited, and the working principle of the projection apparatus may also refer to an existing projection apparatus.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The lens module is characterized by comprising a lens barrel and a diaphragm arranged in the lens barrel, wherein the lens barrel is provided with a light through opening, the diaphragm is positioned on at least one side of the inner wall of the lens barrel, and the diaphragm and the lens barrel are integrally arranged.

2. The lens module as recited in claim 1, wherein the stop is arcuate and blocks a portion of the light-passing opening.

3. The lens module as claimed in claim 1, wherein the stop is annular and blocks a portion of the light-passing opening.

4. The lens module as claimed in claim 1, wherein the light blocking area of the diaphragm is less than or equal to half of the light passing area of the light passing opening.

5. The lens module as claimed in claim 1, wherein an edge of the diaphragm near a center of the light-passing opening is provided with a mold-releasing slope.

6. The lens module as claimed in claim 1, wherein the stop is disposed to be inclined toward an end of the barrel.

7. The lens module as claimed in claim 1, wherein a rib is disposed at a junction between the diaphragm and the inner wall of the barrel, and the rib is connected to the diaphragm and the inner wall of the barrel respectively.

8. The lens module as claimed in claim 1, wherein the barrel is a plastic barrel, and the barrel and the diaphragm are integrally injection molded.

9. The lens module as claimed in any one of claims 1-8, further comprising a lens, wherein the inner side of the lens barrel is provided with a supplementary point bearing structure, and the lens is disposed on the supplementary point bearing structure.

10. The lens module as recited in claim 9, wherein each of the spot-filling receiving structures further has a dispensing slot filled with glue for fixing the lens.

11. The lens module as claimed in claim 9, wherein the complementary point bearing structure comprises an annular step and a bearing boss, the annular step is located inside the lens barrel, and the bearing boss is located on and raised relative to a mesa of the annular step.

12. The lens module as claimed in any one of claims 1-8, wherein the outer peripheral surface of the lens barrel is provided with a reinforcing grid structure.

13. The lens module as recited in claim 12, wherein the reinforcing grid structure has screw holes.

14. A projection apparatus comprising a projection main body and the lens module according to any one of claims 1 to 13, wherein the lens barrel is disposed on the projection main body.