CN219302857U - Lens adjusting mechanism and projection equipment - Google Patents

Abstract

The embodiment of the application provides a lens adjusting mechanism and projection equipment, and relates to the technical field of lens adjustment. The lens adjusting mechanism can adjust the parallelism between the image light of the lens and the light valve optical axis of the light valve. The lens adjusting mechanism includes: a light valve housing having a first connection portion; the lens shell is provided with a second connecting part, and the second connecting part is arranged corresponding to the first connecting part; the positioning structure is arranged between the first connecting part and the second connecting part and is used for enabling the first connecting part to be abutted with the second connecting part and positioning the first connecting part and the second connecting part; the adjusting assembly is arranged between the first connecting part and the second connecting part, and the second connecting part moves around the positioning structure relative to the first connecting part through the adjusting assembly, so that the parallelism between the image light of the optical lens and the light valve optical axis of the light valve meets the use requirement. The lens adjusting mechanism is used for adjusting the relative position between the optical lens and the light valve.

Description

Lens adjusting mechanism and projection equipment

Technical Field

The embodiment of the application relates to the technical field of lens adjustment, in particular to a lens adjustment mechanism and projection equipment.

Background

A lens is an optical component for generating an image, and is typically a lens group consisting of one or more optical glass lenses, typically a concave lens, a convex lens, or a combination of a concave lens and a convex lens. Lenses may be used in cameras, video cameras, microscopes, telescopes and projectors, or in conjunction with other 3C (Computer, communication, consumer Electronics, 3C) products.

The lens is used for enabling the image light to pass through, and the image light can be imaged after passing through the lens. The lens in the lens has a lens optical axis, and after the lens in an ideal state is assembled, the image light can be corresponding to and matched with the lens optical axis. However, when the lens needs to be combined with other structures, errors exist in manufacturing and assembling parts, so that the optical axis of the lens cannot correspond to the image light. Taking a projector as an example, when the parallelism between the image light and the optical axis of the lens is not satisfied, the projected image will be deformed in unequal proportions, and the resolution will be reduced, so that the display quality will be poor.

Therefore, a mechanism is needed to adjust the position of the lens, and the adjusting mechanism can make the image light of the lens match the optical axis of the lens or make the image light of the lens parallel to the optical axis of the light valve.

Disclosure of Invention

The embodiment of the application provides a lens adjusting mechanism and projection equipment, which can adjust the position of an optical lens relative to a light valve so that the parallelism between the image light of the optical lens and the light valve optical axis of the light valve meets the use requirement.

The embodiment of the application provides a lens adjustment mechanism, including: the lens comprises a light valve shell, a lens shell, a positioning structure and at least one group of adjusting components, wherein the light valve shell is provided with a first connecting part for arranging a light valve; the lens shell is provided with a second connecting part, the second connecting part is arranged corresponding to the first connecting part, and the lens shell is used for arranging an optical lens; the positioning structure is arranged between the first connecting part and the second connecting part and is used for enabling the first connecting part to be in butt joint with the second connecting part and positioning the first connecting part and the second connecting part; each group of adjusting components is arranged between the first connecting part and the second connecting part, and the second connecting part moves around the positioning structure relative to the first connecting part through the adjusting components, so that the parallelism between the image light of the optical lens and the light valve optical axis of the light valve meets the use requirement.

In the embodiment of the application, since the first connecting part and the second connecting part are respectively arranged on the light valve shell and the lens shell, the light valve shell and the lens shell can be connected through the first connecting part and the second connecting part; the positioning structure is arranged between the first connecting part and the second connecting part, the first connecting part and the second connecting part can be positioned through the positioning structure, and the first connecting part and the second connecting part can be abutted through the positioning structure; meanwhile, at least one group of adjusting components is arranged between the first connecting part and the second connecting part, and the second connecting part can move around the positioning structure by taking the positioning structure as a supporting point through adjusting at least one group of adjusting components, so that the position of the lens shell relative to the light valve shell can be adjusted, the position of the optical lens relative to the light valve can be adjusted, and the parallelism between the image light of the optical lens and the light valve optical axis of the light valve can meet the use requirement.

In one possible implementation of the present application, the positioning structure includes: a positioning protrusion provided on the first connection part, and a positioning groove provided on the second connection part in correspondence with the positioning protrusion; or, a positioning groove provided on the first connection portion, and a positioning protrusion provided on the second connection portion in correspondence with the positioning groove.

In one possible implementation of the present application, at least one of the first abutment surface on the positioning protrusion and the second abutment surface on the positioning protrusion and the positioning protrusion is an arc surface.

In one possible implementation of the present application, the positioning protrusion is provided with a first fastening hole, the positioning groove is provided with a second fastening hole corresponding to the first fastening hole, and the first fastening member is disposed in the first fastening hole and the second fastening hole, so that the positioning protrusion and the positioning groove can be abutted against each other in a relatively movable manner.

In one possible implementation of the application, the first fastening member is provided with a first elastic member, and the positioning protrusion and the positioning groove are pressed against each other by the first elastic member.

In one possible implementation of the application, the first fastening hole comprises a first through hole, the second fastening hole comprises a second threaded hole, the first fastening piece comprises a first bolt matched with the second threaded hole, and the diameter of the first through hole is larger than the diameter of the first bolt; or, the first fastening hole comprises a first threaded hole, the second fastening hole comprises a second through hole, the first fastening piece comprises a first bolt matched with the first threaded hole, and the aperture of the second through hole is larger than the diameter of the first bolt.

In one possible implementation manner of the present application, a first adjusting hole corresponding to each group of adjusting components is provided on the first connecting portion, and a second adjusting hole corresponding to the first adjusting hole is provided on the second connecting portion; the adjusting assembly comprises an adjusting fastener and a second elastic piece, the adjusting fastener is arranged in the first adjusting hole and the second adjusting hole, the second elastic piece is arranged between the first connecting portion and the second connecting portion, the first connecting portion and the second connecting portion are enabled to move relatively through the adjusting fastener, and the second elastic piece enables the first connecting portion and the second connecting portion to move in opposite directions.

In one possible implementation manner of the present application, a first fixing groove is disposed on a side, facing the second connecting portion, of the first connecting portion, the first fixing groove is disposed coaxially with the first adjusting hole, and the second elastic member is disposed in the first fixing groove; or, a second fixing groove is formed in one side, facing the first connecting portion, of the second connecting portion, the second fixing groove and the second adjusting hole are coaxially arranged, and the second elastic piece is arranged in the second fixing groove.

In one possible implementation manner of the present application, the adjusting assemblies are two groups, and the adjusting assemblies of the two groups are all disposed on one side opposite to the positioning structure on the first connection portion.

In another aspect, an embodiment of the present application provides a projection apparatus, including: the projection host, the optical lens and the lens adjusting mechanism of any one of the embodiments are arranged on the projection host through the lens adjusting mechanism.

The projection device provided by the embodiment of the application has the same technical effect as the lens adjusting mechanism of any one embodiment, namely, the position of the lens in the projection device relative to the light valve can be adjusted, so that the parallelism between the image light of the lens and the light valve optical axis of the light valve meets the use requirement.

Drawings

Fig. 1 is an exploded view of a lens adjusting mechanism according to an embodiment of the present disclosure;

fig. 2 is a cross-sectional view of a lens adjustment mechanism provided in an embodiment of the present application;

FIG. 3 is an enlarged schematic view of a portion A of FIG. 2 according to an embodiment of the present application;

fig. 4 is a cross-sectional view of a lens adjustment mechanism provided in an embodiment of the present application;

FIG. 5 is a partially enlarged schematic illustration of portion B of FIG. 4 provided in an embodiment of the present application;

FIG. 6 is a cross-sectional view of a lens adjustment mechanism provided in an embodiment of the present application;

fig. 7 is a cross-sectional view of a lens adjustment mechanism provided in an embodiment of the present application;

FIG. 8 is a schematic view of a light valve housing of a lens adjustment mechanism according to an embodiment of the present disclosure;

fig. 9 is a schematic diagram of a lens housing of a lens adjusting mechanism according to an embodiment of the present disclosure.

Reference numerals illustrate:

1-a light valve housing; 11-a first connection; 111-a first adjustment hole; 112-a first fixing groove; 113-a first positioning column; 114-a second positioning column; 12-a light-emitting through hole; 2-a lens housing; 21-a second connection; 211-a second adjustment hole; 212-a second fixing groove; 213-a first positioning hole; 214-a second locating hole; 3-positioning structure; 31-positioning protrusions; 311-a first fastening hole; 312-a first abutment surface; 313-a third fixing groove; 32-positioning grooves; 321-a second fastening hole; 322-a second abutment surface; 33-a first fastener; 34-a first elastic member; 4-an adjustment assembly; 41-adjusting the fastener; 42-a second elastic member; 5-a light valve; 6-optical lens.

Detailed Description

For the purposes, technical solutions and advantages of the embodiments of the present application to be more apparent, the specific technical solutions of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are illustrative of the present application, but are not intended to limit the scope of the present application.

In the present embodiments, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

Furthermore, in the embodiments of the present application, the terms "upper," "lower," "left," and "right," etc., are defined with respect to the orientation in which the components in the drawings are schematically disposed, and it should be understood that these directional terms are relative terms, which are used for descriptive and clarity with respect to each other, and which may vary accordingly with respect to the orientation in which the components in the drawings are disposed.

In the embodiments herein, unless explicitly specified and limited otherwise, the term "connected" is to be construed broadly, and for example, "connected" may be either a fixed connection, a removable connection, or an integral body; can be directly connected or indirectly connected through an intermediate medium.

In the present embodiments, 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.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The embodiment of the application provides a projection device, and the working principle of the projection device is that light irradiates onto a display element of an image, so that an image is generated, and then the image is projected through a lens.

The projection device provided by the embodiment of the application comprises: the projection system comprises a projection host, an optical lens and a lens adjusting mechanism, wherein the optical lens is arranged on the lens adjusting mechanism, the lens adjusting mechanism is fixed on the projection host, and the position of the optical lens relative to the projection host can be adjusted through the lens adjusting mechanism.

Meanwhile, the embodiment of the application also provides a lens adjusting mechanism, which can be applied to projection equipment, but also can be applied to other equipment needing an optical lens, such as a camera, a telescope, a video camera, a microscope and the like, and the embodiment of the application is not limited to the above. For convenience of description, a projection apparatus is taken as an example, and a lens adjustment mechanism provided in an embodiment of the present application is described below.

Referring to fig. 1, fig. 1 is an exploded view of a lens adjusting mechanism according to an embodiment of the present disclosure. The lens adjusting mechanism comprises a light valve shell 1, a lens shell 2, a positioning structure 3 and at least one group of adjusting components 4, wherein the light valve shell 1 is used for arranging a light valve 5, and one end of the light valve shell 1 is provided with a first connecting part 11; the lens housing 2 is used for setting the optical lens 6, a second connecting part 21 is arranged at one end of the lens housing 2, and the second connecting part 21 is correspondingly arranged with the first connecting part 11; the positioning structure 3 is arranged between the first connecting part 11 and the second connecting part 21, and the positioning structure 3 enables the first connecting part 11 to abut against the second connecting part 21 and positions the first connecting part 11 and the second connecting part 21; at least one set of adjustment assemblies 4 is also provided between the first connection portion 11 and the second connection portion 21, the second connection portion 21 being movable about the positioning structure 3 relative to the first connection portion 11 by adjusting the adjustment assemblies 4 of each set.

In the embodiment of the application, since the first connecting portion 11 and the second connecting portion 21 are respectively provided on the light valve housing 1 and the lens housing 2, the light valve housing 1 and the lens housing 2 can be connected through the first connecting portion 11 and the second connecting portion 21; the positioning structure 3 is arranged between the first connecting part 11 and the second connecting part 21, the first connecting part 11 and the second connecting part 21 can be positioned through the positioning structure 3, and the first connecting part 11 and the second connecting part 21 can be abutted through the positioning structure 3; meanwhile, at least one group of adjusting components 4 is further disposed between the first connecting portion 11 and the second connecting portion 21, and the second connecting portion 21 can move around the positioning structure 3 with respect to the first connecting portion 11 by adjusting at least one group of adjusting components 4, so that the position of the lens housing 2 with respect to the light valve housing 1 can be adjusted to adjust the position of the optical lens 6 with respect to the light valve 5, and further the parallelism between the image light of the optical lens 6 and the light valve optical axis of the light valve 5 meets the use requirement.

Compared with the structure of locking the optical valve housing 1 and the lens housing 2 through a plurality of adjusting points in the prior art, the lens adjusting mechanism in the embodiment of the application forms a structure with at least one point relatively fixed support through the positioning structure 3 and at least one group of adjusting components 4, at least one point is adjustable, in the process of adjusting the relative position between the lens housing 2 and the optical valve housing 1 through the adjusting components 4, the lens housing 2 swings relative to the optical valve housing 1 by taking the positioning structure 3 as a supporting point, the situation that the lens housing 2 is deformed in the process of adjusting the lens housing 2 can be avoided, because the structure of the plurality of adjusting points adopted in the prior art does not have fixed supporting points, but the plurality of adjusting points can be adjusted, the lens housing 2 can be positioned in the adjusting process, and the lens housing 2 can be deformed if the operation is improper.

In an alternative implementation, referring to fig. 2, fig. 2 is a cross-sectional view of a lens adjustment mechanism provided in an embodiment of the present application. As shown in fig. 1 and 2, the positioning structure 3 includes a positioning protrusion 31 and a positioning groove 32, wherein the positioning protrusion 31 is provided on the first connection portion 11 toward the side of the second connection portion 21, the positioning groove 32 is provided on the second connection portion 21 at a position corresponding to the positioning protrusion 31, and the shape of the positioning groove 32 is adapted to the shape of the positioning protrusion 31. It should be noted that the positioning structure 3 may be disposed between the opposite surfaces of the first connecting portion 11 and the second connecting portion 21, or may be disposed on the side of the first connecting portion 11 and the side of the second connecting portion 21, which is not limited in the embodiment of the present application. In this way, the first connection portion 11 and the second connection portion 21 can be abutted by the positioning projection 31 and the positioning groove 32, and the first connection portion 11 and the second connection portion 21 can be abutted together by only one point or face, and at the same time, the first connection portion 11 and the second connection portion 21 can be accurately positioned.

Illustratively, referring to fig. 3, fig. 3 is an enlarged partial schematic view of portion a of fig. 2 provided in an embodiment of the present application. The first abutment surface 312 on the positioning projection 31 that abuts against the positioning groove 32 may be set as a convex arc surface; correspondingly, the second abutting surface 322 on the positioning groove 32 abutting against the positioning protrusion 31 is set as an arc surface of concave. For example, the first abutting surface 312 and the second abutting surface 322 may each be provided as a spherical surface, and the radii of the two spherical surfaces are the same. In this way, during the movement of the second connection portion 21 around the first abutment surface 312 through the second abutment surface 322, the second connection portion 21 can be swung around the center of the first abutment surface 312, so as to adjust the position of the lens housing 2 relative to the light valve housing 1.

In another alternative implementation, referring to fig. 4 and 5, fig. 4 is a cross-sectional view of a lens adjustment mechanism provided in an embodiment of the present application, and fig. 5 is a partially enlarged schematic view of a portion B in fig. 4 provided in an embodiment of the present application. As shown in fig. 4 and 5, the first abutment surface 312 on the positioning projection 31 that abuts against the positioning projection 31 may be provided as a convex arc surface, and the second abutment surface 322 on the positioning projection 32 that abuts against the positioning projection 31 may be provided as a concave non-arc surface; alternatively, the first abutment surface 312 is provided as a concave non-circular arc surface and the second abutment surface 322 is provided as a convex circular arc surface. For example, the first abutment surface 312 may be provided as a spherical surface and the second abutment surface 322 as a conical surface; alternatively, the first abutment surface 312 is provided as a conical surface and the second abutment surface 322 is provided as a spherical surface. In this way, during the movement of the second connection portion 21 around the first abutment surface 312 through the second abutment surface 322, the second connection portion 21 can be swung around the center of the first abutment surface 312, so as to adjust the position of the lens housing 2 relative to the light valve housing 1.

In yet another alternative implementation, referring to fig. 6, fig. 6 is a cross-sectional view of a lens adjustment mechanism provided in an embodiment of the present application. The positioning projection 31 in the positioning structure 3 may be provided on the side of the second connecting portion 21 near the first connecting portion 11, and the positioning groove 32 in the positioning structure 3 may be provided on the first connecting portion 11 at a position corresponding to the positioning projection 31. In this way, a suitable arrangement of the positioning structure 3 can be selected according to the specific structures of the light valve housing 1 and the lens housing 2.

As shown in fig. 1 and 2, in order to ensure the contact between the first connection portion 11 and the second connection portion 21 on the side where the positioning structure 3 is provided, a first fastener 33 may be provided on the side where the positioning structure 3 is provided between the first connection portion 11 and the second connection portion 21, and the positioning protrusion 31 and the positioning groove 32 may be relatively movably abutted by the first fastener 33 without separation.

Illustratively, in the axial direction along the lens housing 2, a first fastening hole 311 may be provided on the positioning boss 31, a second fastening hole 321 may be provided on the positioning groove 32, and the second fastening hole 321 and the first fastening hole 311 are provided correspondingly, with the first fastening member 33 being provided in the first fastening hole 311 and the second fastening hole 321. The first fastening hole 311 and the second fastening hole 321 may be provided at other positions on the first connection portion 11 and the second connection portion 21, which is not limited in the embodiment of the present application.

For example, the first fastening hole 311 is provided as a first through hole, the second fastening hole 321 is provided as a second threaded hole, the first fastening member 33 may employ a first bolt that is adapted to the second threaded hole, and the first through hole has a larger diameter than the first bolt. Alternatively, the first fastening hole 311 is provided as a first threaded hole, the second fastening hole 321 is provided as a second through hole, the first fastening member 33 may be a first bolt, the first bolt is adapted to the first threaded hole, and the second through hole has a larger diameter than the first bolt.

In this embodiment, since the first fastening hole 311 is provided on the positioning projection 31 and the second fastening hole 321 is provided on the positioning groove 32, the first fastening member 33 can be provided in the first fastening hole 311 and the second fastening hole 321, and in the case where the relative movement between the first connection portion 11 and the second connection portion 21 can be generated in the radial direction of the lens housing 2, the first connection portion 11 and the second connection portion 21 can be made to abut against each other in the axial direction of the lens housing 2 without being separated, so that the movement in the axial direction of the lens housing 2 does not occur between the side where the lens housing 2 and the light valve housing 1 abut against each other; meanwhile, the diameter of the first through hole or the diameter of the second through hole is set to be larger than the diameter of the first bolt, and the first bolt is not restricted by the first through hole or the second through hole during the movement of the second connection part 21 relative to the first connection part 11, so that the movement of the second connection part 21 relative to the first connection part 11 in the radial direction of the lens housing 2 is not restricted.

In order to further improve the reliability of the abutment between the positioning projection 31 and the positioning groove 32 and the convenience of the arrangement of the first fastener 33, a first elastic member 34 may be provided on the first fastener 33, and the positioning projection 31 and the positioning groove 32 may be pressed against each other by the first elastic member 34.

For example, as shown in fig. 3, a third fixing groove 313 may be provided on a side of the first connection part 11 remote from the second connection part 21, and the third positioning groove 313 is provided coaxially with the first fastening hole 311. In this way, the first elastic member 34 is disposed in the third fixing groove 313 such that the first fastening member 33 is coupled with the second fastening hole 321 through the first elastic member 34 and the first fastening hole 311. For example, the first resilient member 34 may employ a compression spring or a spring pad.

Alternatively, as shown in fig. 5, the first fastener 33 and the first elastic member 34 may be integrated first bolts with elastic pads. The spring pad and the first bolt are integrated together, the compression spring or the spring pad is not required to be firstly placed in the third fixing groove 313 in the installation process, then the first bolt penetrates into the first fastening hole 311 through the compression spring or the spring pad, and only the first bolt integrated with the spring pad is required to penetrate into the first fastening hole 311, so that the installation steps of the first fastening piece 33 and the first elastic piece 34 can be simplified.

In this way, under the elastic force of the first elastic piece 34, the first fastener 33 drives the second connecting portion 21 to move towards the first connecting portion 11, so that the positioning groove 32 is pressed against the positioning protrusion 31; and because of the first elastic member 34, when the first fastening member 33 is arranged, the first fastening member 33 is not required to be arranged at the right position, namely, the positioning groove 32 and the positioning protrusion 31 can move relatively without the first fastening member 33, and the separation can not occur; meanwhile, the amount of compression of the first elastic member 34 can be adjusted by adjusting the first fastener 33, so that the amount of pressure with which the positioning groove 32 and the positioning projection 31 are pressed against can be adjusted.

As yet another example, referring to fig. 7, fig. 7 is a cross-sectional view of a lens adjustment mechanism provided in an embodiment of the present application. As shown in fig. 1 and 7, the adjustment assembly 4 includes an adjustment fastener 41 and a second elastic member 42, a first adjustment hole 111 is provided on the first connection portion 11, a second adjustment hole 211 corresponding to the position of the first adjustment hole 111 is provided on the second connection portion 21, the adjustment fastener 41 is provided in the first adjustment hole 111 and the second adjustment hole 211, and the first connection portion 11 and the second connection portion 21 can be moved toward each other or away from each other around the positioning structure 3 by adjusting the adjustment fastener 41; the second elastic member 42 is provided between the first connection portion 11 and the second connection portion 21, and the first connection portion 11 and the second connection portion 21 can be moved in opposite directions by the second elastic member 42.

For example, the first adjustment hole 111 may be a through hole, the second adjustment hole 211 may be a screw hole, the first adjustment hole 111 may be a screw hole, the second adjustment hole 211 may be a through hole, and the adjustment fastener 41 may be a bolt corresponding to the screw hole; alternatively, the first adjustment hole 111 and the second adjustment hole 211 may be through holes, and the adjustment fastener 41 may be a bolt pair, that is, a bolt and a nut. The second elastic member 42 may be a compression spring or a spring pad.

In order to facilitate the fixation of the second elastic member 42, as shown in fig. 7, a first fixing groove 112 for fixing the second fastening member 42 may be provided on the first connection portion 11, the first fixing groove 112 being provided on a side of the first connection portion 11 facing the second connection portion 21. A second fixing groove 212 for fixing the second fastener 42 may be provided on the second connection portion 21, and the second fixing groove 212 may be provided on a side of the second connection portion 21 facing the first connection portion 11. Alternatively, the first connection portion 11 and the second connection portion 21 are provided with the fixing grooves, that is, the first connection portion 11 is provided with the first fixing groove 112, and the second connection portion 21 is provided with the second fixing groove 212 corresponding to the first fixing groove 112.

For example, the first fixing groove 112 may be a circular groove coaxial with the first adjustment hole 111, and the first fixing groove 112 may be provided at another position on the first connection portion 11, a square groove, or a groove of another shape. The second fixing groove 212 may be a circular groove coaxial with the second adjusting hole 211, and the second fixing groove 212 may be disposed at other positions on the second connecting portion 21, may be a square groove, or may be a groove of other shapes, which is not limited in the embodiment of the present application.

In this embodiment, since the adjustment fastener 41 is disposed between the first connection portion 11 and the second connection portion 21, the first connection portion 11 and the second connection portion 21 can be moved relatively around the positioning structure 3 by adjusting the adjustment fastener 41, and at the same time, the second elastic member 42 is disposed between the first connection portion 11 and the second connection portion 21, and in the process of adjusting the adjustment fastener 41, the corresponding position change can be generated between the first connection portion 11 and the second connection portion 21 in time under the action of the second elastic member 42, and the second elastic member 42 can reduce the transmission of vibration between the lens housing 2 and the light valve housing 1, thereby reducing the vibration of the optical lens 6.

Referring to fig. 8 and 9, fig. 8 is a schematic view of a light valve housing of a lens adjusting mechanism according to an embodiment of the present application, and fig. 9 is a schematic view of a lens housing of a lens adjusting mechanism according to an embodiment of the present application. As shown in fig. 8, the first connection part 11 is disposed at one end of the light valve housing 1, the first connection part 11 may be rectangular, circular, or other irregular polygonal, a positioning protrusion 31 in the positioning structure 3 is disposed on one side of the first connection part 11, and a first adjustment hole 111 and a first fixing groove 112 for mounting the adjustment assembly 4 are disposed on the other side of the first connection part 11 opposite to the positioning structure 3; a light-emitting through hole 12 is provided in the middle of the first connection portion 11, the light-emitting through hole 12 communicates with the inside of the light valve housing 1, and the image light beam converted by the light valve 5 passes through the light-emitting through hole 12. Accordingly, as shown in fig. 9, a second connection part 21 is provided at one end of the lens housing 2, the second connection part 21 may be provided in a rectangular shape corresponding to the shape of the first connection part 11, or in a circular shape, other irregular polygonal shape, etc., a positioning groove 32 in the positioning structure 3 is provided on one side of the second connection part 21, and a second adjustment hole 211 and a second fixing groove 212 for mounting the adjustment assembly 4 are provided on the other side of the second connection part 21 opposite to the positioning groove 32; an optical path inlet 22 is provided in the middle of the second connection portion 21, and an image beam enters the lens housing 2 through the optical path inlet 22 and irradiates the optical lens 6.

Meanwhile, as shown in fig. 8 and 9, a first positioning column 113 and a second positioning column 114 are further provided on the first connection portion 11, the first positioning column 113 and the second positioning column 114 being provided between the positioning structure 3 and the adjustment assembly 4, respectively; accordingly, the second connection portion 21 is provided with a first positioning hole 213 corresponding to the first positioning column 113, and the second connection portion 21 is provided with a second positioning hole 214 corresponding to the second positioning column 114. For example, the first positioning column 113 and the second positioning column 114 may each be provided in a cylindrical shape, the first positioning hole 213 may be provided in an elliptical shape, and the second positioning hole 214 may be provided in a circular hole. In the process of assembling the optical valve housing 1 and the lens housing 2, coarse positioning can be performed on the optical valve housing 1 and the lens housing 2 through the positioning column and the positioning Kong Duiguang, and then the relative position between the optical valve housing 1 and the lens housing 2 can be adjusted with high precision through the positioning structure 3 and the adjusting assembly 4.

As shown in fig. 1, 8 and 9, two first adjustment holes 111 and two first fixing grooves 112 are provided on the first connection portion 11, and two second adjustment holes 211 and two second fixing grooves 212 are provided on the second connection portion 21, so that the adjustment assemblies 4 can be arranged in two groups, and both the two groups of adjustment assemblies 4 are arranged on the side opposite to the positioning structure 3 on the first connection portion 11. In this way, the positioning structure 3 and the two sets of adjusting components 4 together form a three-point locking lens adjusting mechanism, wherein the positioning structure 3 is a point which cannot be adjusted, and the two sets of adjusting components 4 can be adjusted, so that in the process of adjusting the two sets of adjusting components 4, the first connecting part 11 and the second connecting part 21 can generate relative motion around the positioning structure 3, and further, the image light of the optical lens 6 and the light valve optical axis of the light valve 5 are adjusted to be parallel, or the parallelism meeting the use requirement is adjusted.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the claims of the present application.

Claims (10)

1. A lens adjustment mechanism, comprising:

a light valve housing (1), the light valve housing (1) having a first connection (11) for arranging a light valve (5);

a lens housing (2), wherein the lens housing (2) is provided with a second connecting part (21), the second connecting part (21) is arranged corresponding to the first connecting part (11), and the lens housing (2) is used for arranging an optical lens (6);

a positioning structure (3), wherein the positioning structure (3) is arranged between the first connecting part (11) and the second connecting part (21), and is used for enabling the first connecting part (11) to be abutted with the second connecting part (21) and positioning the first connecting part (11) and the second connecting part (21);

at least one group of adjusting components (4), wherein each group of adjusting components (4) is arranged between the first connecting part (11) and the second connecting part (21), and the second connecting part (21) moves around the positioning structure (3) relative to the first connecting part (11) through adjusting the adjusting components (4), so that the parallelism of the image light rays of the optical lens (6) and the light valve optical axis of the light valve (5) meets the use requirement.

2. Lens adjustment mechanism according to claim 1, characterized in that the positioning structure (3) comprises:

a positioning projection (31) provided on the first connecting portion (11), and a positioning groove (32) provided on the second connecting portion (21) in correspondence with the positioning projection (31);

or, a positioning groove (32) provided on the first connecting portion (11), and a positioning projection (31) provided on the second connecting portion (21) in correspondence with the positioning groove (32).

3. The lens adjustment mechanism according to claim 2, wherein at least one of a first abutment surface (312) on the positioning projection (31) abutting the positioning groove (32), and a second abutment surface (322) on the positioning groove (32) abutting the positioning projection (31) is an arc surface.

4. A lens adjusting mechanism according to claim 2 or 3, wherein the positioning boss (31) is provided with a first fastening hole (311), the positioning groove (32) is provided with a second fastening hole (321) corresponding to the first fastening hole (311), and a first fastener (33) is provided in the first fastening hole (311) and the second fastening hole (321) so that the positioning boss (31) and the positioning groove (32) are relatively movably abutted.

5. The lens adjustment mechanism according to claim 4, characterized in that the first fastener (33) is provided with a first elastic member (34), and the positioning projection (31) and the positioning groove (32) are pressed against each other by the first elastic member (34).

6. The lens adjustment mechanism according to claim 4, wherein the first fastening hole (311) includes a first through hole, the second fastening hole (321) includes a second threaded hole, the first fastener (33) includes a first bolt that is fitted with the second threaded hole, and a diameter of the first through hole is larger than a diameter of the first bolt;

alternatively, the first fastening hole (311) includes a first threaded hole, the second fastening hole (321) includes a second through hole, the first fastening member (33) includes a first bolt adapted to the first threaded hole, and the second through hole has a diameter larger than that of the first bolt.

7. The lens adjustment mechanism according to claim 1, wherein a first adjustment hole (111) corresponding to each group of the adjustment assemblies (4) is provided on the first connection portion (11), and a second adjustment hole (211) corresponding to the first adjustment hole (111) is provided on the second connection portion (21);

the adjusting assembly (4) comprises an adjusting fastener (41) and a second elastic piece (42), the adjusting fastener (41) is arranged in the first adjusting hole (111) and the second adjusting hole (211), the second elastic piece (42) is arranged between the first connecting portion (11) and the second connecting portion (21), the first connecting portion (11) and the second connecting portion (21) are enabled to move relatively through the adjusting fastener (41), and the second elastic piece (42) enables the first connecting portion (11) and the second connecting portion (21) to move in opposite directions.

8. The lens adjustment mechanism according to claim 7, wherein a first fixing groove (112) is provided on a side of the first connecting portion (11) facing the second connecting portion (21), the first fixing groove (112) is provided coaxially with the first adjustment hole (111), and the second elastic member (42) is provided in the first fixing groove (112);

or, a second fixing groove (212) is formed in the second connecting portion (21) towards one side of the first connecting portion (11), the second fixing groove (212) and the second adjusting hole (211) are coaxially arranged, and the second elastic piece (42) is arranged in the second fixing groove (212).

9. Lens adjusting mechanism according to claim 7 or 8, characterized in that the adjusting components (4) are arranged in two groups, and that both groups of adjusting components (4) are arranged on the side of the first connecting part (11) opposite to the positioning structure (3).

10. A projection device, comprising:

a projection host;

an optical lens;

the lens adjustment mechanism of any one of claims 1 to 9, wherein the optical lens is provided on the projection host through the lens adjustment mechanism.

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