TW201040607A - Lens module and camera module using same - Google Patents

Abstract

The present invention relates to a lens module. The lens module includes a holder, a barrel and at least one lens. The lens is received in the barrel. The barrel defines a through receiving space. The through receiving space includes a first receiving space. The sidewall surrounding the first receiving space includes a first matching surface formed close to the object side of the lens module. The first matching surface is a continual smooth curved surface. The barrel includes an engaging portion. At least three bumps are disposed on the sidewall of the engaging portion. The sidewalls of the bumps are formed on a circle. The radius of the first matching surface is equal to the radius of the bumps. The present invention also relates to a camera module using the lens module.

Description

201040607 VI. Description of the Invention: [Technical Field] The present invention relates to a lens module and a camera module thereof. [Prior Art] = Development of camera technology The camera module has been widely used in camera devices of various materials. The camera module typically includes a mirror mount and a lens barrel. The image sensor (four) is assembled in the lens holder, and the lens is assembled in the lens barrel. Now the threaded frame and the lens barrel are usually threaded, but the threaded structure requires the internal thread and the external thread to match each other in the thread shape and the thread pitch. Therefore, to machine a high precision thread, precision is required. High molds greatly increase production costs. In order to properly reduce the production cost, the manufacturer generally uses ordinary molds for thread processing, but the precision of the thread processed by the ordinary mold is not high, so that the coaxiality of the lens and the image sensor after the lens holder and the lens barrel are processed and assembled. A deviation occurs. 〇 [Summary of the Invention] It is necessary to provide a lens module that can effectively ensure the coaxial precision of the lens and the image sensor and a camera module thereof. μ A lens module comprising a mirror holder, a lens barrel and at least one lens located within the mirror. A through chamber is formed in the lens holder, and the first receiving cavity of the lens barrel is formed. The cavity wall of the first accommodating cavity includes a first mating wall of the object side of the lens module, and the first mating wall is a continuous smooth curved surface. The lens barrel includes at least two positioning protrusions adjacent to the object side of the lens module of the 201040607. Said to the same circumference. The outer diameter of the first bump of the lens holder. . The outer surface of the two positioning protrusions is located on the side surface of the locking portion. The inner diameter of the two matching protrusions is equal to the positioning - the camera module of the technology includes the lens module, and the image sensing , and - light transmitting components. The image sensor is disposed on the substrate: the substrate is electrically connected. The lens module and the image sensor are: 5^ and U on the substrate. The light element is aligned with the image and fixed in the chamber of the lens module. The lens module, the lens holder, a lens barrel and at least one lens located in the lens barrel. A through-opening chamber is formed in the lens holder, and the chamber includes a first accommodating cavity for arranging the lens barrel. The cavity wall of the first accommodating cavity includes a first mating wall adjacent to the object side of the lens module. The first mating wall is a continuous smooth curved surface. The lens barrel includes a jam near the object side of the lens module. Hey. At least three positioning protrusions are disposed on a side surface of the locking portion. The outer surfaces of the at least three positioning lugs are on the same circumference. The inner diameter of the first mating wall of the mirror mount is equal to the outer diameter of the positioning lug. The lens module of the present invention and the camera module of the same, wherein at least three positioning protrusions are disposed on a side surface of the top of the lens barrel, and an inner diameter of the first matching wall of the lens holder is equal to the positioning convex The outer diameter of the block can effectively improve the coaxial accuracy of the lens and the image sensor. [Embodiment] Hereinafter, the present invention will be further described in detail with reference to the accompanying drawings. 5 and 2010, a camera module 100 includes a lens module 10, an image sensor 20, a substrate 30, and a light transmissive element 40. The image sensor 20 is disposed on the substrate 30 and electrically connected to the substrate 30. The lens module 10 is opposite to the image sensor 20 and is fixed on the substrate 30. The light transmissive element 40 is opposite to the image sensor 20 and is fixed in the lens module 10 . In the embodiment, the light transmissive element 40 is an infrared filter. The lens module 10 includes a lens holder 11, a lens barrel 12 and at least one cymbal lens 13. The lens barrel 12 is sleeved in the lens holder 11, and the at least one lens piece 13 is disposed in the lens barrel 12. The lens holder 11 has a cylindrical structure in which a through chamber 111 is formed. The light transmissive element 40 is fixed in the chamber 111 to divide the chamber 111 into a first accommodating cavity 112 and a second accommodating cavity 113. The first accommodating cavity 112 is adjacent to the object side of the lens module 10, and the second accommodating cavity 113 is adjacent to the image side of the lens module 10. The first accommodating cavity 112 is for accommodating the lens barrel 12. The cavity wall 114 of the first accommodating cavity 112 includes a first mating wall 114a ❹ and a second mating wall 114b. The first mating wall 114a is a continuous smooth curved surface. The second mating wall 114b is internally threaded. The second receiving cavity 113 is configured to receive the image sensor 20. The lens barrel 12 includes a locking portion 121 and a screw portion 122. The locking portion 121 is adjacent to the object side of the lens module 10, and the screwing portion 122 is adjacent to the image side of the lens module 10. At least three focusing bumps 124 are disposed on the side surface 121a of the locking portion 121. In the present embodiment, the number of the focusing bumps 124 is three. The three focus bumps 124 are equally spaced. 6 201040607 and the side walls 124a of the three focus bumps 124 facing the lens holder 11 are both located on the same circumference. A positioning protrusion 125 is disposed on the sidewall 124a of each of the focus bumps 124. The outer surfaces 125a of the three positioning projections 125 are located on the same circumference. The inner diameter of the first mating wall 114a of the lens holder 11 is equal to the sum of the outer diameter of the focusing bump 124 and the radial thickness of the positioning bump 125, thereby ensuring the lens 13 and the image sensor 20. Coaxial accuracy. At the same time, the contact area between the positioning protrusions 125 and the first matching wall 114a of the lens holder 11 is larger than the contact area between the external thread and the internal thread when the lens barrel and the lens holder are screwed in the prior art. It is much smaller, so the friction between the lens barrel 12 and the lens holder 11 during the focusing process can be reduced. The threaded portion 122 is provided with an external thread loosely coupled with the internal thread on the second mating wall 114b of the lens holder 11 so that the lens barrel 12 can be along the first receiving cavity 112 of the lens holder 11 The optical axis direction moves slowly and evenly, thereby facilitating more accurate focusing of the camera module 100. In the present embodiment, the focus bump 124 and the lens barrel 12 have an integral structure. The positioning protrusion 125 is integrated with the focusing protrusion 124

It can be understood that the positioning bumps 124 may not be disposed, and the positioning protrusions 125 are directly disposed on the side surface 121a of the locking portion 121 of the lens barrel 12. At this time, the mirror housing 11 is The inner diameter of a mating wall 114a is equal to the outer diameter of the positioning protrusion 125 to ensure the coaxial precision of the lens 13 and the image sensor 20. The assembly process of the camera module 100 is as follows. The lens barrel 12 is placed in the lens holder 11 and then clamped at a gap between adjacent focus bumps 124 by a pair of dice (not shown). Rotating the lens barrel 12 slowly, due to the mirror 7 201040607

The inner diameter of the first mating wall 114a of the A seat 11 is equal to 叱t ^ * The outer diameter of the focusing bump 124 and the radial thickness of the positioning bump 125 * θ < and ' can ensure the lens 13 The coaxial precision with the image sensor 20 is the same as the internal thread of the screw portion 122 of the lens barrel 12 and the second alignment of the lens holder 11 and the internal thread of the wall U4b. The lens barrel 12 is uniformly lowered in the mirror holder u until the lens barrel 12 is rotated to a proper position in the lens holder 11. In the camera module of the present invention, at least a scoring bump is disposed on a side surface of the engaging portion, and a positioning protrusion is disposed on a sidewall of the hard bump, and the first mating (four) inner # is equal to The sum of the convex thickness H and the radial thickness of the positioning bumps, so that the coaxial precision of the sheet and the image sensor can be obtained. It is intended that the present invention may be practiced otherwise, and that it is within the scope of the invention as claimed. ❹ [Simplified illustration of the drawing] FIG. 2 is a cross-sectional view of the camera module of FIG. 1 . [Main component symbol description] Camera module 100 Mirror base 11 Lens 13 Substrate 30 Lens module 10 hiL· Mirror Gang 12 Image sensor 20 Light transmitting element 40 8 201040607 Room 111 First accommodating cavity 112 Second capacity Cavity 113 cavity wall 114 first mating wall 114a second mating wall 114b carding portion 121 side surface 121a screwing portion 122 focusing bump 124 side wall 124a positioning bump 125 outer surface 125a

Claims (1)

201040607 • VII. Patent application scope: 1. A lens core assembly, comprising a lens holder, a lens barrel and at least a lens located in the lens barrel, wherein the lens holder forms a through chamber, the chamber The first accommodating cavity includes a sleeve, and the cavity wall of the first accommodating cavity includes a first mating wall adjacent to an object side of the lens module, and the first mating wall is a continuous smooth curved surface, the lens barrel includes a locking portion adjacent to an object side of the lens module, and at least three mosquito bit bumps are disposed on a side surface of the locking portion, the at least three positioning bumps The outer surface is located on the same crucible circumference. The inner diameter of the first mating wall of the mirror mount is equal to the outer diameter of the positioning lug. The lens group includes a lens holder, a lens barrel and at least one lens located in the lens barrel 2, wherein the lens holder forms a through chamber, and the chamber includes a lens barrel a first accommodating cavity, the cavity wall of the first accommodating cavity includes a first mating wall adjacent to an object side of the lens module, and the first "matching wall is a continuous smooth curved surface, the mirror The cartridge includes a locking portion adjacent to the object side of the ◎ lens module, at least three focusing bumps are disposed on a side surface of the locking portion, and sidewalls of the at least three focusing projections are located on the same circumference And a positioning protrusion is disposed on the sidewall of the focusing bump, the outer surfaces of the at least three positioning protrusions are located on the same circumference, and the inner diameter of the first mating wall of the lens holder is equal to the adjustment The lens module according to the second aspect of the invention, wherein the at least three focus bumps are equally spaced. 4. The lens module according to claim 1 or 2, wherein 201040607-·the first The cavity wall of the accommodating cavity further includes a second mating wall adjacent to the image side of the lens module, the second mating wall is provided with an internal thread, and the lens barrel includes an image side adjacent to the lens module. a screwing portion, wherein the screwing portion is provided with an external thread that cooperates with the internal thread of the second mating wall. 5. The lens module of claim 4, wherein the screwing The external thread of the portion is loosely coupled with the internal thread of the second mating wall of the lens holder. 〇〇6. A camera module comprising a lens module, an image sensor, a substrate and a light transmissive The image sensor is disposed on the substrate and electrically connected to the substrate, wherein the camera module further includes a lens module, and the lens module includes a lens holder. a lens barrel and at least one lens located in the lens barrel, a through cavity is formed in the lens holder, the chamber includes a first receiving cavity for sleeved the lens barrel, the first volume The cavity wall of the cavity includes a first match adjacent to the object side of the lens module. The first match The wall is a continuous smooth curved surface, the lens barrel includes a clamping jaw adjacent to the object side of the lens module, and at least three positioning protrusions are disposed on a side surface of the locking portion, the at least three positioning The outer surface of the bump is located on the same circumference ±, the inner diameter of the first mating wall of the lens holder is equal to the outer diameter of the positioning bump, and the lens module and the image sensor are relatively positive and S1 is set The light transmissive element is opposite to the image sensor and is fixed in the lens module. The camera module includes a lens module, and the image is mounted on the substrate. a sensor, a US board and a light transmissive element, wherein the image sensing H is disposed on the substrate and the substrate is electrically connected, and the method is: a lens module, the mirror group Including a lens holder, a lens barrel, and at least one lens located in the lens barrel of 11 201040607, wherein the lens holder forms a through chamber, and the chamber includes a first volume for arranging the lens barrel a cavity, the cavity wall of the cavity includes a first mating wall adjacent to the object side of the lens module The first mating wall is a continuous smooth curved piece, the lens barrel includes a carding portion adjacent to an object side of the lens module, and the card "sets at least three focus bumps, the at least Three:= the walls are located on the same circumference, and a positioning protrusion is disposed on the sidewall of the focusing protrusion, and the outer surfaces of the at least three positioning protrusions are located on the same circumference, and the first surface of the lens holder is The inner diameter of the matching wall is equal to the sum of the outer diameter of the focusing protrusion and the radial thickness of the positioning protrusion, and the lens module is opposite to the image sensor and is fixed on the substrate. The light transmissive element is opposite to the image sensor and is fixed in a chamber of the lens module. 8. The lens module of claim 7, wherein the at least three focus bumps are equally spaced. 9. The lens module of claim 6 or 7, wherein the wall of the first receiving cavity further comprises a second mating wall adjacent to the image side of the lens module. The second mating wall is provided with an internal thread, the lens barrel includes a screw portion on the image side of the lens module, and the screw portion is provided with an internal thread of the second mating wall Fitted external threads. 10. The lens module of claim 9, wherein the external thread of the screw 4 and the internal thread of the second mating wall of the lens holder are loosely fitted. 12