CN107797219A

CN107797219A - Camera lens

Info

Publication number: CN107797219A
Application number: CN201711021011.8A
Authority: CN
Inventors: 韦传冬
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2017-10-25
Filing date: 2017-10-25
Publication date: 2018-03-13

Abstract

The present invention relates to technical field of imaging, a kind of more particularly to camera lens, including lens barrel, the outer wall of the lens barrel is provided with tapered thread structure, camera lens provided by the invention can play self-locking action when helicitic texture is completely screwed into body to camera lens, prevent camera lens from departing from body, and then ensure image quality, improve the reliability of electronic device.

Description

Camera lens

Technical field

The present invention relates to technical field of imaging, more particularly to a kind of camera lens.

Background technology

With the development of science and technology, many electronic device such as digital cameras, mobile phone etc. are respectively provided with camera lens, camera lens typically passes through spiral shell Line is installed on the body of electronic device, is provided with helicitic texture outside the lens barrel of camera lens, and the big footpath of existing helicitic texture is along mirror The optical axis direction of head is equal, during electronic device use, the phenomenon of camera lens loosening usually occurs, or even departs from body, Image quality is influenceed, reduces the reliability of electronic device.

The content of the invention

The invention provides a kind of camera lens, above mentioned problem can solve the problem that.

The present invention's provides a kind of camera lens, and the outer wall of the lens barrel is provided with tapered thread structure.

Preferably, screw-in direction of the big footpath of the helicitic texture along the camera lens reduces.

Preferably, the cone angle of the helicitic texture is 50-90 degree.

Preferably, the tooth form of the helicitic texture is trapezium structure.

Preferably, the lead angle of the helicitic texture is less than or equal to 10 degree.

Preferably, spiral of the area of the cross section of the initiating terminal of the helicitic texture along the helicitic texture screws in track Increase.

Preferably, spiral of the area of the cross section of the clearing end of the helicitic texture along the helicitic texture screws in track Reduce.

Technical scheme provided by the invention can reach following beneficial effect：

Camera lens provided by the present invention, camera lens include lens barrel, the screw-in direction of the big footpath of the helicitic texture of lens barrel along camera lens It is gradually reduced, in camera lens and body rundown process, the less one end elder generation in big footpath and body contacts, big footpath are larger in helicitic texture One end progress into body, with the larger one end in big footpath and body contacts, the thrust between helicitic texture and body increases Add, and then increase frictional force therebetween, when helicitic texture is completely screwed into body, self-locking action can be played to camera lens, Prevent camera lens from departing from body, and then ensure image quality, improve the reliability of electronic device.

It should be appreciated that the general description and following detailed description of the above are only exemplary, this can not be limited Invention.

Brief description of the drawings

Fig. 1 is a kind of structural representation of specific embodiment of camera lens provided by the present invention；

Fig. 2 is a kind of side view of specific embodiment of camera lens provided by the present invention.

Reference：

10- lens barrels；

11- helicitic textures；

111- initiating terminals；

112- clearing ends.

Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the present invention Example, and for explaining principle of the invention together with specification.

Embodiment

The present invention is described in further detail below by specific embodiment and with reference to accompanying drawing.

The embodiments of the invention provide a kind of camera lens, the camera lens can be used for digital camera, video camera, mobile phone, flat board etc. Electronic device, the digital camera for the lens changeable that is particularly suitable for use in, these electronic devices include body, are typically provided with body Screwed hole, in electronic device production process or in use, camera lens is installed on body by screwed hole；Or needed more in camera lens When changing, camera lens and body are dismantled.

As shown in Figure 1-2, camera lens includes lens barrel 10, and the outer wall of lens barrel 10 is provided with helicitic texture 11, and helicitic texture 11 has Initiating terminal 111 and clearing end 112, wherein, initiating terminal 111 refers to when helicitic texture 11 screws in the screwed hole of body close to screwed hole The screw terminal of one end of bottom hole, i.e. helicitic texture 11；Clearing end 112 refers to when helicitic texture 11 screws in the screwed hole of body away from spiral shell One end of the bottom hole of pit.Specifically, helicitic texture 11 has a big footpath, the screw-in direction of the big footpath of helicitic texture 11 along camera lens (direction for referring to the image side surface that camera lens is pointed to by the thing side of camera lens) reduces.

Using said structure, the big footpath of the helicitic texture 11 of lens barrel is gradually reduced along the screw-in direction of camera lens, camera lens with In body rundown process, the less one end elder generation in big footpath and body contacts, the larger one end in big footpath progress into helicitic texture 11 Body, with the gradual screw-in of helicitic texture 11, the pressure between helicitic texture 11 and body gradually increases, made therebetween Frictional force gradually increases, when the larger one end in big footpath and body contacts and when screwing in body, between helicitic texture 11 and body Pressure reaches maximum, and correspondingly, frictional force therebetween also reaches maximum, therefore using the camera lens of the present invention, helicitic texture 11 can make camera lens play self-locking action, prevent camera lens and body from departing from, and then ensure image quality, and that improves electronic device can By property.

Along the screw-in direction of camera lens, it can also be in nonlinear change that the big footpath of helicitic texture 11, which can linearly change, When the big footpath of helicitic texture 11 linearly changes, helicitic texture 11 can be tapered thread, as shown in Fig. 2 in order to screw thread knot The processing of structure 11, and can be easier the cooperation of helicitic texture 11 and the screwed hole of body.It is in the big footpath of helicitic texture 11 During nonlinear change, on the longitudinal section of lens barrel 10, the curved shape of line of the same side in major footpath of helicitic texture 11, one As, the line is prominent to direction of the lens barrel 10 away from optical axis.Wherein, the longitudinal section of lens barrel 10 refers to section that lens barrel 10 crosses optical axis Face.

When helicitic texture 11 is tapered thread, if the cone angle A (as shown in Figure 2) of helicitic texture 11 is too big, screw thread knot The screw-in body of structure 11 is relatively difficult, if the cone angle A of helicitic texture 11 is too small, helicitic texture 11 compares the self-lock ability of camera lens again Weaker, therefore, the cone angle of helicitic texture 11 is 50-90 degree, it is preferable that is 75 degree, so that helicitic texture 11 both easily screws in this Body, and can enough ensures there is enough frictional force between helicitic texture 11 and body, and then plays a part of self-locking to camera lens.

No matter which kind of structure helicitic texture 11 uses, the tooth form of helicitic texture 11 can be trapezium structure, triangular structure Or rectangular configuration, when helicitic texture 11 is tapered thread, preferably the tooth form of helicitic texture 11 is trapezium structure, such as Fig. 2 institutes Show, further to increase the frictional force between helicitic texture 11 and body, so that camera lens has preferably self-lock ability.

Further, if the lead angle of helicitic texture 11 is too big, the frictional force of helicitic texture 11 and body can also be increased； If the lead angle of helicitic texture 11 is too small, again helicitic texture 11 can be made to be easy to loosen with body, therefore, embodiments of the invention The lead angle of middle helicitic texture 11 is less than or equal to 10 degree, it is preferred that is 8 degree, with the helicitic texture 11 changed with big footpath It is engaged, the common frictional force increased between helicitic texture 11 and body, while ensures that helicitic texture 11 can smoothly screw in this Body.

Usually, for fast assembling-disassembling camera lens, depth that helicitic texture 11 screws in body is limited, and helicitic texture 11 Pitch S (as shown in Figure 2) too conference reduce helicitic texture 11 thread turns, if the number of turns of screw thread is very little, camera lens with The contact area of body is too small, and engagement force is too small, and the self-lock ability of camera lens will decline；And the pitch S of helicitic texture is too small Words, increase processing cost again, or even can not process, therefore, the pitch S of helicitic texture 11 elects 0.21mm-0.23mm as, preferably , it is 0.22mm, to ensure that helicitic texture 11 there are enough thread turns, improves the self-lock ability of camera lens, and can be easy to add Work.

Engaged for the ease of the initiating terminal 111 of helicitic texture 11 with body, the cross section of the initiating terminal 111 of helicitic texture 11 Area threadingly structure 11 spiral screw in track increase, the cross section of initiating terminal 111 is perpendicular to the spiral shell where the cross section The tangent line that rotation is screwed at track.

Similarly, the area of the cross section of the clearing end 112 of helicitic texture 11 threadingly structure 11 spiral screw in track subtract It is small, wherein, the tangent line that the cross section of clearing end 112 is screwed at track perpendicular to the spiral where the cross section.

Preferably, the area of the cross section of the initiating terminal 111 of helicitic texture 11 threadingly structure 11 spiral screw in track Increase, meanwhile, threadingly the spiral of structure 11 screws in track and reduced for the area of the cross section of the clearing end 112 of helicitic texture 11.

A kind of embodiment, initiating terminal 111 and clearing end 112 can be wedge structure, and the lozenges of wedge structure is located at spiral shell The crest side of line structure 11, alternatively, the other parts of the both ends of wedge structure respectively with helicitic texture 11 seamlessly transit.

Another embodiment, initiating terminal 111 and clearing end 112 can also be arcuate structure, the arcwall face position of arcuate structure In the crest side of helicitic texture 11.When initiating terminal 111 is arcuate structure, tooth bottom side of the arc away from helicitic texture 11 To prominent；When clearing end 112 is arcuate structure, arc is recessed towards tooth bottom.

It should be noted that different structures can also be respectively adopted from clearing end 112 in initiating terminal 111, can also originate It is wedge structure or arcuate structure to hold one of 111 and clearing end 112.

The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims

1. a kind of camera lens, it is characterised in that including lens barrel, the outer wall of the lens barrel is provided with tapered thread structure.

2. camera lens according to claim 1, it is characterised in that screw-in side of the big footpath of the helicitic texture along the camera lens To reduction.

3. camera lens according to claim 2, it is characterised in that the cone angle of the helicitic texture is 50-90 degree.

4. camera lens according to claim 1, it is characterised in that the tooth form of the helicitic texture is trapezium structure.

5. camera lens according to claim 1, it is characterised in that the lead angle of the helicitic texture is less than or equal to 10 Degree.

6. according to the camera lens described in claim any one of 1-5, it is characterised in that the cross section of the initiating terminal of the helicitic texture Spiral of the area along the helicitic texture screw in track increase.

7. according to the camera lens described in claim any one of 1-5, it is characterised in that the cross section of the clearing end of the helicitic texture Spiral of the area along the helicitic texture screw in track and reduce.