WO2021043108A1

WO2021043108A1 - Lens adjusting device and optical apparatus

Info

Publication number: WO2021043108A1
Application number: PCT/CN2020/112636
Authority: WO
Inventors: 周正平; 闫成亮; 李屹
Original assignee: 深圳光峰科技股份有限公司
Priority date: 2019-09-05
Filing date: 2020-08-31
Publication date: 2021-03-11
Also published as: CN210639326U

Abstract

Provided is a lens adjusting device (100), comprising a collection sleeve (1) having a receiving space (10) and being used for fixing a lens in the receiving space (10), a fixing base (2) sheathed in the collection sleeve (1), and an elastic member (3) sheathed in the collection sleeve (1), wherein the elastic member (3) is clamped between the fixing base (2) and the collection sleeve (1), with one end of the elastic member (3) abutting against and being connected to the fixing base (2), and the other end thereof abutting against and being connected to the collection sleeve (1); and the collection sleeve (1) can move relative to the fixing base (2) in the direction of the optical axis of the lens under the action of the elastic member (3). An optical apparatus using the lens adjusting device is further provided. The lens adjusting device (100) and the optical apparatus are simple in structure, easy to operate, and high in reliability.

Description

Lens adjusting device and optical equipment

【Technical Field】

The utility model relates to the technical field of optics, in particular to a lens adjusting device and optical equipment.

【Background technique】

With the continuous development of science and technology, optical equipment is constantly moving towards fine development. For example, the precise position of the lens in the optical design of the projector affects the optical efficiency.

The related art optical device includes a housing, a fixing seat fixed to the housing, a collecting sleeve threadedly connected to the fixing seat, a lens fixed to the collecting sleeve, and a color wheel arranged spaced apart from the lens.

However, in the optical design of the current optical equipment, the distance between the lens and the color wheel has a great impact on the efficiency. Generally, the tolerance is required to be within 0.1mm. The existing processing and assembly cannot meet the requirements due to accumulated tolerances. The maximum optical efficiency is achieved by adjusting the distance between the lens and the color wheel. At present, the lens of most optical equipment is fixed on the housing by a fixed sleeve, and the fixing device is not adjustable. If the optical effect is not optimal due to the cumulative tolerance of the optical device, it is necessary to adjust the fixed sleeve or add gaskets, etc., which consumes a lot of man-hours and high cost, and the mold or gaskets need to be repaired or added. The reliability is not high.

Therefore, it is necessary to provide a new device and optical equipment to solve the above technical problems.

[Utility model content]

The purpose of the present invention is to overcome the above technical problems and provide a lens adjusting device and optical equipment with simple structure, easy operation and high reliability.

In order to achieve the above objective, the present invention provides a lens adjusting device, which includes a collection sleeve having a storage space and used to fix the lens in the storage space, a fixing seat sleeved on the collection sleeve, and a sleeve In the elastic piece of the collecting sleeve, the elastic piece is clamped between the fixing seat and the collecting sleeve, and one end of the elastic piece is in abutting connection with the fixing seat, and the other end is connected to the fixing seat. The collection sleeve is abutted and connected; the collection sleeve can move relative to the fixed seat along the optical axis direction of the lens under the action of the elastic member.

More preferably, the elastic member is a spring.

More preferably, the collection sleeve includes a cylindrical wall with the accommodating space in a columnar shape, and a flange extending radially outward from one end of the cylindrical wall away from the fixing seat, and the elastic The piece is sleeved on the cylinder wall and abutted and connected with the flange.

More preferably, the fixing seat includes a fixing wall in a hollow ring shape and an internal thread formed on the inner side of the fixing wall, the outer surface of the cylinder wall is provided with an external thread matching the internal thread, and the fixing The wall and the cylinder wall are engaged with the internal thread and the external thread to form a threaded connection.

More preferably, the fixing seat further includes a handle portion extending from the fixing wall in a direction away from the cylinder wall; the handle portion includes two, and the two handle portions are spaced apart from each other.

More preferably, the lens adjusting device further includes a fixing device for fixing the relative position of the collecting sleeve and the fixing seat.

More preferably, the fixing device includes a fixing hole provided through the fixing wall and glue filled in the fixing hole, and the glue forms a fixed connection between the fixing wall and the cylinder wall.

More preferably, the fixing device includes a fixing hole provided through the fixing wall and a screw that cooperates with the fixing hole, and the screw is inserted into the fixing hole and forms the fixing wall and the cylinder wall. Fixed connection.

More preferably, the fixing device includes a clamping groove and a clamping head respectively provided on the fixing wall and the cylinder wall, and the fixing wall and the cylinder wall are buckled and fixed by the clamping groove and the clamping head.

The utility model also provides an optical device, which includes a housing, a lens and a color wheel arranged in the housing, and the lens adjustment device as described in any one of the above, the lens and the color wheel are arranged at intervals, The lens is fixed in the accommodating space, the fixing seat is fixed to the housing, and the collection sleeve rotates forward or reversely in the fixing seat so that the lens and the color wheel can face each other. The location changes.

Compared with the prior art, the lens adjusting device and optical equipment of the present invention form a threaded connection with the collecting sleeve through the fixing seat, and rotating the collecting sleeve to make it along the optical axis direction of the lens Move relative to the fixed base to adjust the position of the lens along the optical axis direction, that is, adjust the lens to advance or retreat to a proper position along the optical axis direction. This structure adjusts the front and rear positions of the collection sleeve through the fixing seat and the collection sleeve thread, thereby adjusting the position of the lens in the vertical optical path direction, so that the light passing through the lens is focused, and the structure is simple It is easy to operate, can greatly save the time for the operator to adjust the lens focus during the assembly process, improve work efficiency, save labor costs, and the assembly process is simple and the precision is controllable. In addition, the elastic piece is sleeved on the collecting sleeve, and two ends of the elastic piece are connected to the fixing seat and the collecting sleeve respectively in abutment, and when the collecting sleeve is rotated, the elastic The compression or elongation of the element produces elastic deformation, and this structure enables the elastic element to play a role in buffering and preventing idling, thereby improving the reliability of the lens adjusting device and the optical device of the present invention.

【Explanation of the drawings】

In order to more clearly explain the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present utility model. For example, for those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:

Figure 1 is a schematic diagram of the three-dimensional structure of the lens adjusting device of the present invention;

Figure 2 is an exploded view of a part of the three-dimensional structure of the lens adjusting device of the present invention;

Fig. 3 is a cross-sectional view taken along the line A-A in Fig. 1.

【detailed description】

The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. Examples. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

Please refer to FIGS. 1-3. The present invention provides a lens adjusting device 100. The lens adjusting device 100 includes a collecting sleeve 1, a fixing seat 2, an elastic member 3, and a fixing device 4. The lens adjusting device 100 is used to fix a lens (not shown) and adjust the position of the lens. The lens adjusting device 100 is applied to optical equipment.

The collecting sleeve 1 has a receiving space 10. The collecting sleeve 1 is used to fix the lens in the receiving space 10. Specifically, the collecting sleeve 1 includes a cylindrical wall 11 with the receiving space 10 in a columnar shape, and a flange extending from the end of the cylindrical wall 11 away from the fixing seat 2 and extending radially outwardly. 12.

The barrel wall 11 is used to fix the lens. The cylinder wall 11 can fix the collection sleeve 1 to the fixing seat 2 through the fixing device 4.

The flange 12 is used by the operator to rotate the collection sleeve 1. In this embodiment, the flange 12 is circular, and the periphery of the flange 12 is provided with a plurality of notches 120 spaced apart from each other. The notch 120 is more conducive to the convenience of the operator to rotate the collecting sleeve 1 so as to provide a good user experience.

The fixing seat 2 is sleeved on the collecting sleeve 1. Wherein, the collecting sleeve 1 and the fixing seat 2 form a threaded connection. The fixing seat 2 is used to fix the collection sleeve 1 to the housing of the optical device. Specifically, the fixing base 2 includes a fixing wall 21, an internal thread (not shown in the figure) formed on the inner side of the fixing wall 21, and a handle 22.

The fixed wall 21 has a hollow ring shape. The fixed wall 21 is used to sleeve the collection sleeve 1. The outer surface of the cylinder wall 11 is provided with an external thread matching the internal thread, and the fixing wall 21 and the cylinder wall 11 are engaged with the internal thread and the external thread to form a threaded connection. The threaded connection structure facilitates adjustment of the positions of the fixing base 2 and the collecting sleeve 1. Specifically, the collection sleeve 1 can move relative to the fixing base 2 along the optical axis direction of the lens under the action of the elastic member 3. That is to say, the collecting sleeve 1 is adjusted to move relative to the fixed base 2 along the optical axis direction of the lens to adjust the position of the lens along the optical axis direction. The way of collecting the sleeve 1 is to rotate the collecting sleeve 1. This structure adjusts the front and rear positions of the collection sleeve 1 through the fixing seat 2 and the collection sleeve 1, thereby adjusting the position of the lens along its optical axis. The optical axis advances or retreats to a suitable position, so that the light passing through the lens is focused. The structure is simple and easy to operate, which can greatly save the time for the operator to adjust the lens focus during the assembly process, improve work efficiency, and save manpower Cost, simple assembly process and controllable precision.

In this embodiment, the collecting sleeve 1 adjusts the relative front and rear positions of the collecting sleeve 1 and the fixing seat 2 through threads, thereby adjusting the positions of the lens and the color wheel, thereby greatly saving operations. During the assembly process, the person adjusts the focusing time of the lens, the assembly process is simple and the precision is controllable.

The handle portion 22 extends from the fixed wall 21 in a direction away from the cylinder wall 11. The structure provided with the handle portion 22 facilitates the fixing of the fixing base 2 to the housing of the optical device. In this embodiment, the handle portion 22 includes two, and the two handle portions 22 are spaced apart from each other. This structure facilitates better fixing of the fixing base 2 to the housing of the optical device, and has high stability.

The elastic member 3 is sleeved on the collecting sleeve 1. The elastic member 3 is clamped between the fixing base 2 and the collecting sleeve 1, and one end of the elastic member 3 is abutted and connected to the fixing base 2, and the other end is connected to the collecting sleeve 1 butt and connect. Specifically, the elastic member 3 is sleeved on the cylinder wall 11 and connected to the flange 12 in abutment. When the collecting sleeve 1 is rotated, the position of the fixing seat 2 and the collecting sleeve 1 causes the elastic member 3 to be compressed or elongated to produce elastic deformation. This structure enables the elastic member 3 to buffer and prevent The idling function prevents idling from causing a decrease in the accuracy of adjusting the position of the fixing seat 2 and the collecting sleeve 1, thereby improving the reliability of the lens adjusting device 100 of the present invention.

In this embodiment, the elastic member 3 is a spring. The use of a spring can be structurally easy to cooperate with the fixing seat 2 and the collecting sleeve 1, and is also easy to install. Of course, it is not limited to this, other elastic materials can also be used, such as metal shrapnel and plastic shrapnel can also be used to connect the fixing seat 2 and the collection sleeve 1 and play a role of buffering and preventing idling.

The fixing device 4 fixes the relative positions of the collecting sleeve 1 and the fixing seat 2, that is to say, after the collecting sleeve 1 is adjusted to a proper position, the fixing device 4 fixes the position of the collecting sleeve 1 to a proper position. The collecting sleeve 1 is fixed to the fixing seat 2.

In this embodiment, the fixing device 4 includes a fixing hole 40 provided through the fixing wall 21 and glue filled in the fixing hole 40, and the glue connects the fixing wall 21 and the cylinder wall. 11 Form a fixed connection. Wherein, the fixing holes 40 include at least two, and the fixing holes 40 are used after the operator adjusts the position of the lens, that is, after the distance between the lens and the color wheel of the optical device reaches a maximum optical efficiency , The fixing wall 21 and the barrel wall 11 are fixed by dispensing (that is, the glue is filled into the fixing hole 40), so as to avoid the screw sliding of the fixing wall 21 and the barrel wall 11 due to vibration , To ensure the precise position of the lens and the color wheel, thereby improving the optical performance and reliability. Of course, it is not limited to this, and other forms of fixing are also possible. For example, another embodiment is to replace the glue with a screw: that is, the fixing device 4 further includes a screw (not shown) that cooperates with the fixing hole 40, and the screw is inserted into the fixing hole 40. And the fixed wall 21 and the cylinder wall 11 form a fixed connection. Of course, it is also possible to use the screw and the glue at the same time. Another embodiment is to use a buckle method. Specifically, the fixing device 4 includes a groove (not shown) and a chuck (not shown) respectively provided on the fixing wall 21 and the barrel wall 11, and the The fixing wall 21 and the cylinder wall 11 are fixed by a buckle through the groove and the chuck.

In this embodiment, the adjustment process of the lens adjustment device 100 is as follows:

The operator rotates the collecting sleeve 1 by rotating the flange 12, so that the collecting sleeve 1 moves in the direction of the vertical optical path of the lens by threads relative to the fixing base 2, thereby making it fixed to The lens in the collection sleeve 1 moves along the direction of the vertical light path of the lens, thereby adjusting the distance between the lens and the color wheel, so as to achieve the effect of adjusting the focus point of the light path. The operator then fixes the fixing wall 21 and the cylinder wall 11 by dispensing glue.

The present invention also provides an optical device (not shown). The optical device includes a housing, a lens and a color wheel arranged in the housing, and the lens adjusting device 100, the lens and the color wheel The lenses are arranged at intervals, the lens is fixed in the receiving space 10, and the fixing seat 2 is fixed to the housing. The positive or negative rotation of the collecting sleeve 1 in the fixing seat 2 can change the relative position of the lens and the color wheel. In other words, the collecting sleeve 1 adjusts its relative position to the fixing base 2 through forward and reverse rotation to change the relative position of the lens and the color wheel. The optical device applies the lens adjusting device 100, so that the optical device has a simple structure, good optical performance and high reliability.

Compared with the prior art, the lens adjusting device and optical equipment of the present invention form a threaded connection with the collecting sleeve through the fixing seat, and rotating the collecting sleeve to make it along the optical axis direction of the lens Move relative to the fixed base to adjust the position of the lens along the optical axis direction, that is, adjust the lens to advance or retreat to a proper position along the optical axis direction. This structure adjusts the front and rear positions of the collection sleeve through the fixing seat and the collection sleeve thread, thereby adjusting the position of the lens in the vertical optical path direction, so that the light passing through the lens is focused, and the structure is simple It is easy to operate, can greatly save the time for the operator to adjust the lens focus during the assembly process, improve work efficiency, save labor costs, and the assembly process is simple and the precision is controllable. In addition, the elastic piece is sleeved on the collecting sleeve, and two ends of the elastic piece are connected to the fixing seat and the collecting sleeve respectively by abutting, and the elastic piece Compression or extension produces elastic deformation, and this structure enables the elastic member to play a role in buffering and preventing idling, thereby improving the reliability of the lens adjusting device and the optical device of the present invention.

The above are only the embodiments of the present utility model. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present utility model, but these all belong to The scope of protection of the utility model.

Claims

A lens adjusting device, comprising a collecting sleeve having a receiving space and used for fixing the lens in the receiving space and a fixing seat sleeved on the collecting sleeve, characterized in that the lens adjusting device further includes An elastic piece sleeved on the collecting sleeve, the elastic piece is clamped between the fixing base and the collecting sleeve, and one end of the elastic piece abuts and connects with the fixing base, and the other One end is abutted and connected with the collecting sleeve; the collecting sleeve can move relative to the fixing seat along the optical axis direction of the lens under the action of the elastic member.
The lens adjusting device according to claim 1, wherein the elastic member is a spring.
The lens adjustment device according to claim 1, wherein the collecting sleeve includes a cylindrical wall with the accommodating space, and an end of the cylindrical wall away from the fixing seat radially outwards The flange plate is bent and extended, and the elastic member is sleeved on the cylinder wall and connected to the flange plate in abutment.
The lens adjustment device according to claim 3, wherein the fixing seat comprises a fixing wall in a hollow ring shape and an internal thread formed on the inner side of the fixing wall, and the outer surface of the cylinder wall is provided with a With the external thread that matches the internal thread, the fixed wall and the barrel wall are engaged with the external thread to form a threaded connection.
The lens adjustment device according to claim 4, wherein the fixing seat further comprises a handle portion extending from the fixing wall in a direction away from the barrel wall; the handle portion includes two, two The handle parts are spaced apart from each other.
4. The lens adjustment device according to claim 4, wherein the lens adjustment device further comprises a fixing device that fixes the relative position of the collection sleeve and the fixing seat.
The lens adjustment device according to claim 6, wherein the fixing device comprises a fixing hole provided through the fixing wall and glue filled in the fixing hole, and the glue connects the fixing wall with the fixing hole. The barrel wall forms a fixed connection.
The lens adjustment device according to claim 6, wherein the fixing device comprises a fixing hole provided through the fixing wall and a screw matching the fixing hole, the screw being inserted into the fixing hole and A fixed connection is formed between the fixed wall and the cylinder wall.
The lens adjustment device according to claim 6, wherein the fixing device comprises a clamping groove and a clamping head respectively provided on the fixing wall and the barrel wall, and the fixing wall and the barrel wall pass through the clamping The groove and the clip head form a buckle fixation.
An optical device, comprising a housing, a lens and a color wheel arranged in the housing, the lens and the color wheel are spaced apart, characterized in that, the optical device further comprises a lens as claimed in claims 1-9 According to any one of the lens adjustment device, the lens is fixed in the accommodating space, the fixing seat is fixed to the housing, and the collection sleeve rotates forward or backward in the fixing seat to allow The relative position of the lens and the color wheel changes.