CN102547101A - Camera module - Google Patents

Abstract

A camera module comprises a circuit board, an image sensor, a lens barrel and a lens base. The image sensor is arranged on the circuit board, and the lens barrel is fixedly supported by the lens base. The lens base consists of a connecting portion, a dustproof portion and a fixing portion, the connecting portion is fixedly connected with the lens barrel, the dustproof portion is used for protecting the image sensor from dust, and the fixing portion is connected with the dustproof portion. The dustproof portion encircles to form a holding space, and both the image sensor and the fixing portion are disposed in the holding space. The fixing portion is fixedly arranged on the image sensor, and a gap is formed between the dustproof portion and the circuit board. The fixing portion of the lens seat of the camera module is fixedly arranged on the image sensor instead of being fixedly disposed on the circuit board, stability of the lens seat cannot be affected even if the circuit board is expanded and tilted due to excessively high ambient temperature, accordingly, a lens is assuredly aligned with an optical center of the image sensor, and an image effect is improved. Simultaneously, the image sensor is sealed and covered by the dustproof portion, so that a good dustproof effect can be realized.

Description

The camera module

Technical field

The present invention relates to a kind of camera module.

Background technology

General camera module generally includes lens barrel, is arranged in the eyeglass in the lens barrel, the microscope base of fixed lens barrel, circuit board and be arranged at the CIS on the circuit board.The lens barrel outside has external screw thread, and the microscope base inboard has the internal thread that cooperates with the external screw thread of lens barrel.During assembling; Earlier eyeglass is arranged in the lens barrel, again microscope base and lens barrel is screwed togather fixingly, be fixedly set in CIS on the circuit board then and make its electric connection; Aim at the sensitivity centre of eyeglass and CIS at last, microscope base is fixedly set on the circuit board.Yet when ambient temperature was too high, the circuit board that contacts with microscope base was prone to the expansion perk, influences microscope base and stablizes the fixing lens barrel, thereby influence image effect in the use.

Summary of the invention

In view of above content, be necessary to provide the stable and image effect of a kind of lens barrel fixing camera module preferably.

A kind of camera module, it comprises circuit board, is arranged at the microscope base of CIS, lens barrel and fixing lens barrel on the circuit board.Microscope base comprises the connecting portion that is fixedly connected with lens barrel, is used for CIS is carried out the dustproof portion of dustproof, and the fixed part that is connected with dustproof portion.Dustproof portion surrounds a receiving space, and CIS and fixed part all are contained in the receiving space.Fixed part is fixedly arranged on the CIS, and the gap between dustproof portion and the circuit board is greater than zero.

Said camera module is fixedly set in through the fixed part with microscope base and avoids on the CIS microscope base is fixedly set on the circuit board; Cause circuit board expansion perk even ambient temperature is too high; Can not influence the stability of microscope base yet; Thereby the assurance eyeglass is aimed at the optical centre of CIS, improves image effect.Dustproof simultaneously portion capping CIS can play dustproof effect preferably.

Description of drawings

Fig. 1 is the solid assembling sketch map of the camera module of embodiment of the present invention.

Fig. 2 is the perspective exploded view of camera module shown in Figure 1.

Fig. 3 is the schematic perspective view of the microscope base of camera module shown in Figure 1.

Fig. 4 is the cutaway view of camera module shown in Figure 1 along the IV-IV line.

The main element symbol description

The camera module	100
		Circuit board	10
CIS	20
		Lens barrel	30
Microscope base	40
		Connecting portion	41
Screw thread	411
		Dustproof portion	43
Roof	431
		Perisporium	433
End face	4331，4511
		Receiving space	435
Through hole	437
		Fixed part	45
Main body	451
		Ribs	453

Embodiment

See also Fig. 1 and Fig. 2, the camera module 100 of embodiment of the present invention comprises circuit board 10, CIS 20, lens barrel 30, eyeglass (figure does not show) and microscope base 40.CIS 20 is fixedly arranged on the circuit board 10.Eyeglass is installed in the lens barrel 30.Microscope base 40 fixing lens barrels 30, and be fixedly arranged on the CIS 20.

Please consult Fig. 3 to Fig. 4 simultaneously, microscope base 40 comprises connecting portion 41, dustproof portion 43 and fixed part 45.Connecting portion 41 is hollow cylindrical, and its inboard is provided with screw thread 411, to screw togather fixing with lens barrel 30.Dustproof portion 43 is an approximate rectangular framework, and it comprises roof 431 and perisporium 433.Offer through hole 437 on the roof 431, connecting portion 41 is fixedly set on the roof 431, and makes through hole 437 corresponding with the hollow structure of connecting portion 41.Perisporium 433 extends to form to the one of which side from the edge of roof 431, and itself and roof 431 surround a receiving space 435 with opening jointly.Perisporium 433 comprises the end face 4331 away from roof 431.Fixed part 45 is fixedly arranged in the receiving space 435 of dustproof portion 43, and it comprises main body 451 and a plurality of ribs 453.Main body 451 is fixedly set in the inboard of the roof 431 of dustproof portion 43, and forms the framework of a sealing around through hole 437.Main body 451 comprises that end face 4511 is slightly smaller than the thickness of CIS 20 to the distance of the end face 4331 of perisporium 433 away from the end face 4511 of the roof 431 of dustproof portion 43.Each ribs 453 is arranged between the perisporium 433 of main body 451 and dustproof portion 43, to strengthen the structural strength of fixed part 45.Two opposed ends of each ribs 453 are fixedly connected with main body 451 and perisporium 433 respectively, and the other end of each ribs 453 is fixedly connected with roof 431.

During assembling; Elder generation is fixedly set in CIS 20 on the circuit board 10 and makes its electric connection, then eyeglass is arranged in the lens barrel 30, and the connecting portion 41 with microscope base 40 screws togather fixing with lens barrel 30 again; Aim at the optical centre of eyeglass and CIS 20 at last; The fixed part 45 of microscope base 40 is fixedly set on the CIS 20 accordingly,, makes the not contact circuit plate 10 of portion 43 that prevents dust because the end face 4511 of fixed part 45 is slightly smaller than the thickness of CIS 20 to the distance of the end face 4331 of perisporium 433; And the gap between it is greater than zero, and perisporium 433 surrounds the side of CIS 20 accordingly.

The camera module 100 of embodiment of the present invention; Be fixedly set on the CIS 20 through fixed part 45 microscope base 40; Avoid microscope base 40 directly is fixedly set on the circuit board 10, cause circuit board 10 expansion perks, also can not influence the stability of microscope base 40 even ambient temperature is too high; Thereby the assurance eyeglass is aimed at the optical centre of CIS 20, improves image effect.Dustproof portion 43 protects CIS 20 to play dustproof effect to CIS 20 from the side.Simultaneously; Because the main body 451 of fixed part 45 is the framework of sealing; The contact area of itself and CIS 20 is less, should more be prone to form horizontal plane than small area of contact, helps microscope base 40 and is connected with CIS 20 realization levels; Thereby guarantee that further eyeglass aims at the optical centre of CIS 20, further improve image effect.In addition; The ribs 453 of fixed part 45 is arranged between the main body 451 of perisporium 433 and fixed part 45 of dustproof portion 43; Improve the overall construction intensity of microscope base 40; Thereby further make microscope base 40 can stablize fixing lens barrel 30, further guarantee to be installed in lens barrel 30 interior eyeglasses and aim at the optical centre of CIS 20.

Be appreciated that those skilled in the art also can do other variation in spirit of the present invention, as long as it does not depart from technique effect of the present invention and all can.These all should be included within the present invention's scope required for protection according to the variation that the present invention's spirit is done.

Claims (5)

1. camera module; It comprises circuit board, is arranged at the microscope base of CIS, lens barrel and this lens barrel of fixing on this circuit board; This microscope base comprises the connecting portion that is fixedly connected with this lens barrel and is used for this CIS is carried out the dustproof portion of dustproof; Should dustproof portion surround a receiving space, this CIS is contained in this receiving space, it is characterized in that: this microscope base also comprises and should dustproof portion is connected and is contained in the interior fixed part of this receiving space; And this fixed part is fixedly set on this CIS, and the gap between this dustproof portion and this circuit board is greater than zero.

2. camera module as claimed in claim 1; It is characterized in that: this dustproof portion comprises the roof that is fixedly connected with the connecting portion of this microscope base; Offer the through hole corresponding on this roof with this connecting portion; This fixed part comprises main body, and this main body is the sealing framework and centers on this through hole setting, and the two ends of this main body are fixedly connected with this roof and this CIS respectively.

3. camera module as claimed in claim 2 is characterized in that: this dustproof portion also comprises from this roof edge the perisporium that extends to away from this connecting portion, this perisporium and this receiving space of this roof formation.

4. camera module as claimed in claim 3 is characterized in that: this fixed part also comprises the ribs that is arranged between this main body and this perisporium, and the both sides of this ribs reach with this main body respectively and are fixedly connected with this perisporium.

5. camera module as claimed in claim 4 is characterized in that: an end of this ribs is fixedly connected with this roof.

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