CN102116919A

CN102116919A - Lens set and lens module using the same

Info

Publication number: CN102116919A
Application number: CN2009103127836A
Authority: CN
Inventors: 何鸿隆
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2009-12-30
Filing date: 2009-12-30
Publication date: 2011-07-06

Abstract

The invention relates to a lens set, which comprises a first lens, a second lens, a third lens and a fourth lens, wherein the first lens, the second lens, the third lens and the fourth lens all comprise optical parts and holding parts around the optical parts; each holding part comprises an object end face and an opposite image end face; a first jogging part is formed on the image end face of the first lens; a first embedding part capable of being embedded in the first jogging part is formed on the object end face of the second lens; a second jogging part is formed on the image end face of the second lens; a second embedding part capable of being embedded in the second jogging part is formed on the object end face of the third lens; a third jogging part is formed on the image end face of the third lens; and a third embedding part capable of being embedded in the third jogging part is formed on the object end face of the fourth lens. The invention also provides a lens module using the lens set. By using the lens set which is formed by mutually embedded lens, the axiality of all optical lens axes is increased, the assembling is convenient and the assembling precision is high.

Description

Lens set and use the camera lens module of this lens set

Technical field

The present invention relates to a kind of lens set and use the camera lens module of this lens set.

Background technology

Along with Development of Multimedia Technology, electronic product with camera function is more and more favored by consumers in general, people pursue miniaturization to electronic product when, the quality of image of its shooting has been proposed requirements at the higher level, wish that promptly the image frame of taking is clear.

The camera lens module of most of electronic products comprises a lens barrel and is loaded on lens barrel interior first lens, second lens, the 3rd lens, the 4th lens at present.One end of lens barrel extends internally and forms the stop section of annular.First lens, second lens, the 3rd lens, the 4th lens are contained in the lens barrel successively.This camera lens module is when assembling, usually first lens, second lens, the 3rd lens, the 4th lens are put in this lens barrel in regular turn, and the stop section of win lens and lens barrel is offseted, use UV glue (Ultraviolet glue afterwards, ultraviolet glue) the 4th lens and lens barrel are bonding, by UV-irradiation this UV glue is solidified then, the 4th lens are fixed in the lens barrel, thereby the assembly in the lens barrel is fixed between the stop section and the 4th lens of lens barrel.

Yet, a plurality of lens of this camera lens module are the difficult optical axis of aiming at when assembling, all can produce eccentric tolerance between each lens and the lens barrel, so the tolerance that whole camera lens module is produced is formed by the tolerance build-up that each lens cause, make that the assembly precision of camera lens module is lower, and comparatively inconvenience of assembling.

Summary of the invention

In view of above-mentioned condition, the camera lens module that is necessary to provide the higher lens set of a kind of assembly precision and uses this lens set.

A kind of lens set, it comprises first lens, second lens, the 3rd lens and the 4th lens, first lens, second lens, the 3rd lens and the 4th lens include optic and around the holding parts of optic, holding parts comprises thing end face and relative picture end face, first lens be formed with first fitting portion as end face, the thing end face of second lens is formed with first Embedded Division that can embed first fitting portion, second lens be formed with second fitting portion as end face, the thing end face of the 3rd lens is formed with second Embedded Division that can embed second fitting portion, the 3rd lens be formed with the 3rd Embedded Division as end face, the thing end face of the 4th lens is formed with three fitting portion chimeric with the 3rd Embedded Division.

A kind of camera lens module, it comprises a lens barrel and is contained in the first interior lens of described lens barrel, second lens, the 3rd lens and the 4th lens, lens barrel comprises cylindrical shell and the stop wall that extends internally from cylindrical shell, first lens, second lens, the 3rd lens and the 4th lens include optic and around the holding parts of optic, holding parts comprises thing end face and relative picture end face, the thing end face of first lens and stop wall mutually against, first lens be formed with first fitting portion as end face, the thing end face of second lens is formed with first Embedded Division that can embed first fitting portion, second lens be formed with second fitting portion as end face, the thing end face of the 3rd lens is formed with second Embedded Division that can embed second fitting portion, the 3rd lens be formed with the 3rd Embedded Division as end face, the thing end face of the 4th lens is formed with three fitting portion chimeric with the 3rd Embedded Division.

This camera lens module is by the mutual chimeric composition lens set of a plurality of lens, the optical axis of each lens is easier to aim at, one global tolerance is only arranged between lens set and the lens barrel, greatly reduce the tolerance stack-ups between each lens and the lens barrel, easy to assembly and assembly precision is higher, can improve the light shaft coaxle degree of each optical lens of camera lens module, thereby improve the image quality of camera lens module.

Description of drawings

Fig. 1 is the structural representation of the camera lens module of embodiment of the present invention.

The main element symbol description

Embodiment

Below in conjunction with embodiment to lens set of the present invention and use the camera lens module of this lens set to be described in further detail.

See also Fig. 1, the camera lens module 100 of embodiment of the present invention comprises that lens barrel 10 reaches first lens 20, first spaced ring 30, second lens 40, second spaced ring 50, the 3rd lens 60, the 3rd spaced ring 70 and the 4th lens 80 that are contained in successively in the lens barrel 10.

Lens barrel 10 is the semi-enclosed cylindrical body of an end, and it comprises that annular cylindrical shell 11 reaches the stop wall 12 that extends internally from an end of cylindrical shell 11.The center position of stop wall 12 offers light well 121, and extraneous light enters in the lens barrel 10 by this light well 121.The inside surface of stop wall 12 is the plane at the periphery of light well 121.The end that lens barrel 10 is relative with being provided with stop wall 12 is an openend 13.The internal diameter of one end of cylindrical shell 11 contiguous stop wall 12 is less than the diameter at cylindrical shell 11 middle parts, the diameter at cylindrical shell 11 middle parts is less than the internal diameter of an end of its neighbouring open end 13, thereby forms first cascaded surface 111, second cascaded surface 112 and the 3rd cascaded surface 113 of annular at the inside surface of cylindrical shell 11.The internal diameter at first cascaded surface, 111 places is less than the internal diameter at second cascaded surface, 112 places, and the internal diameter at second cascaded surface, 112 places is less than the internal diameter at the 3rd cascaded surface 113 places, and the junction between second cascaded surface 112 and the 3rd cascaded surface 113 forms a chamfering 114.Lens barrel 10 increases to the 3rd cascaded surface 113 from second cascaded surface 112 gradually at the internal diameter at chamfering 114 places.

First lens 20, second lens 40, the 3rd lens 60 and the 4th lens 80 are by glass or be made of plastics.

First lens 20 comprise the optic 22 in the middle of being positioned at and are positioned at the periphery and around the holding parts 24 of optic 22.Optic 22 is to play the part of optical effect in first lens 20, and optic 22 can be set to recessed or protruding shape according to concrete needs, thereby light is dispersed or assembled.Holding parts 24 surrounds and connects optic 22, mainly act as placement, supports the optic 22 that is connected.Holding parts 24 comprise thing end face 241, relative as end face 242 and connect described thing end face 241 and the picture outer peripheral edges of end face 242 between lateral surface 243.The thing end face 241 of holding parts 24 is towards light well 121 1 sides of lens barrel 10.The internal diameter at first cascaded surface, 111 places of the external diameter of first lens 20 and lens barrel 10 is suitable substantially.The thing end face 241 of the holding parts 24 of first lens 20 is the plane, and it is formed with first fitting portion 244 of depression towards second lens, 40 place directions as end face 242.

The structure of second lens 40 is identical substantially with the structure of first lens 20, and its difference is: the internal diameter at second cascaded surface, 112 places of the external diameter of second lens 40 and lens barrel 10 is suitable substantially; The thing end face 441 of second lens 40 is formed with first Embedded Division 444 that embeds first fitting portion 244 of protrusion towards first lens, 20 place directions; Second lens 40 be formed with second fitting portion 445 of depression towards the 3rd lens 60 place directions as end face 442.

The structure of the 3rd lens 60 is identical substantially with the structure of first lens 20, and its difference is: the internal diameter at the 3rd cascaded surface 113 places of the external diameter of the 3rd lens 60 and lens barrel 10 is suitable substantially; The thing end face 641 of the 3rd lens 60 is formed with second Embedded Division 644 that embeds second fitting portion 445 of protrusion towards second lens, 40 place directions; The 3rd lens 60 be formed with the 3rd Embedded Division 645 of protrusion towards the 4th lens 80 place directions as end face 642.

The structure of the 4th lens 80 is identical substantially with the structure of first lens 20, and its difference is: the internal diameter at the 3rd cascaded surface 113 places of the external diameter of the 4th lens 80 and lens barrel 10 is suitable substantially; The thing end face 841 of the 4th lens 80 towards the direction of the 3rd lens 60 be formed with depression can be chimeric with the 3rd Embedded Division 645 the 3rd fitting portion 844.

Be provided with between first lens 20 and second lens 40 to be provided with between first spaced ring, 30, the second lens 40 and the 3rd lens 60 between second spaced ring 50, the 3rd lens 60 and the 4th lens 80 and be provided with the 3rd spaced ring 70.First spaced ring 30, second spaced ring 50 and the 3rd spaced ring 70 all are circular, and its thickness is set according to the optical demands of camera lens module 100.First spaced ring 30, second spaced ring 50 and the 3rd spaced ring 70 middle parts are provided with through hole (figure does not indicate).The slightly larger in diameter of through hole is in the diameter of the optic of first lens 20, second lens 40, the 3rd lens 60 and the 4th lens 80.Crack between first spaced ring 30 can be used for controlling between first lens 20 and second lens 40, and can prevent that light is from the edge input of first lens 20 and second lens 40 and produce the floodlight phenomenon.The effect of second spaced ring 50, the 3rd spaced ring 70 is identical with the effect of first spaced ring 30.

During assembling, earlier first lens 20 and first spaced ring 30 are inserted in the lens barrel 10 from the openend 13 of lens barrel 10 successively, the thing end face 241 of the holding parts 24 of first lens 20 leans on the contacted inner surfaces of stop wall 12, and the lateral surface 243 of the holding parts 24 of first lens 20 is relative with first cascaded surface 111 of cylindrical shell 11.Then, again second lens 40 and second spaced ring 50 are pressed in the lens barrel 10 from the openend 13 of lens barrel 10 successively, make first Embedded Division 444 of second lens 40 and first fitting portion, 244 tablings of first lens 20.The 3rd lens 60, the 3rd spaced ring 70 and the 4th lens 80 are pressed in the lens barrel 10 from the openend of lens barrel 10 successively, make second Embedded Division 644 of the 3rd lens 60 and second fitting portion, 445 tablings of second lens 40, the 3rd Embedded Division 645 tablings of the 3rd fitting portion 844 of the 4th lens 80 and the 3rd lens 60.

Can adopt UV glue that the 4th lens 80 are bonding with lens barrel 10, by UV-irradiation this UV glue be solidified then, the 4th lens 80 are fixed in the lens barrel 10, thereby the assembly in the lens barrel 10 is fixed between the stop wall 12 and the 4th lens 80 of lens barrel 10.

During assembling, also can earlier first lens 20, first spaced ring 30, second lens 40, second spaced ring 50, the 3rd lens 60, the 3rd spaced ring 70 and the 4th lens 80 be assembled into lens set, make each lens chimeric mutually, lens set is inserted in the lens barrel 10.

This camera lens module 100 is by the mutual chimeric composition lens set of a plurality of lens, the optical axis of each lens is easier to aim at, between lens set and the lens barrel 10 global tolerance is only arranged, significantly reduced the tolerance stack-ups between each lens and the lens barrel, easy to assembly and assembly precision is higher, can improve the light shaft coaxle degree of camera lens module 100 each optical lens, thereby improve the image quality of camera lens module 100.

In addition, those skilled in the art also can do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included in the present invention's scope required for protection.

Claims

1. lens set, it comprises first lens, second lens, the 3rd lens and the 4th lens, described first lens, second lens, the 3rd lens and the 4th lens include optic and around the holding parts of optic, holding parts comprises thing end face and relative picture end face, it is characterized in that: described first lens be formed with first fitting portion as end face, the thing end face of described second lens is formed with first Embedded Division that can embed first fitting portion, second lens be formed with second fitting portion as end face, the thing end face of described the 3rd lens is formed with second Embedded Division that can embed second fitting portion, the 3rd lens be formed with the 3rd Embedded Division as end face, the thing end face of described the 4th lens is formed with three fitting portion chimeric with the 3rd Embedded Division.

2. lens set as claimed in claim 1 is characterized in that: described lens set also comprise first spaced ring be located between first lens and second lens, be located at second spaced ring between second lens and the 3rd lens and be located at the 3rd lens and the 4th lens between the 3rd spaced ring.

3. camera lens module, it comprises lens barrel and is contained in the first interior lens of described lens barrel, second lens, the 3rd lens and the 4th lens, described lens barrel comprises cylindrical shell and the stop wall that extends internally from cylindrical shell, described first lens, second lens, the 3rd lens and the 4th lens include optic and around the holding parts of optic, holding parts comprises thing end face and relative picture end face, it is characterized in that: the thing end face of described first lens and stop wall mutually against, described first lens be formed with first fitting portion as end face, the thing end face of described second lens is formed with first Embedded Division that can embed first fitting portion, second lens be formed with second fitting portion as end face, the thing end face of described the 3rd lens is formed with second Embedded Division that can embed second fitting portion, the 3rd lens be formed with the 3rd Embedded Division as end face, the thing end face of described the 4th lens is formed with three fitting portion chimeric with the 3rd Embedded Division.

4. camera lens module as claimed in claim 3 is characterized in that: described camera lens module also comprise first spaced ring be located between first lens and second lens, be located at second spaced ring between second lens and the 3rd lens and be located at the 3rd lens and the 4th lens between the 3rd spaced ring.

5. camera lens module as claimed in claim 3 is characterized in that: described stop wall extends internally from an end of cylindrical shell, and the central authorities of stop wall form light well.

6. camera lens module as claimed in claim 3, it is characterized in that: the internal diameter of an end of the contiguous stop wall of described cylindrical shell is less than the diameter at cylindrical shell middle part, the diameter at cylindrical shell middle part is less than the internal diameter of an end of its neighbouring open end, thereby form first cascaded surface of annular in the inside surface of this cylindrical shell, second cascaded surface and the 3rd cascaded surface, the internal diameter at the first cascaded surface place of the external diameter of described first lens and lens barrel is suitable substantially, the internal diameter at the second cascaded surface place of the external diameter of described second lens and lens barrel is suitable substantially, and the internal diameter at the external diameter of described the 3rd lens and the 4th lens and the 3rd cascaded surface place of lens barrel is suitable substantially.