CN103630994A

CN103630994A - Lens module

Info

Publication number: CN103630994A
Application number: CN201210312055.7A
Authority: CN
Inventors: 王宏坤
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: 2012-08-29
Filing date: 2012-08-29
Publication date: 2014-03-12

Abstract

A lens module comprises a plurality of passive components, a lens seat, a circuit board, an image sensor and a glass plate; the circuit board is fixed on one end of the lens seat; the passive components and the image sensor are electrically arranged on the circuit board; the passive components are positioned on the surface, facing the lens seat, of the circuit board; a photosurface of the image sensor faces towards the lens seat; the glass plate is positioned above the photosurface of the image sensor; a viscosity medium is arranged between the glass plate and the lens seat, and is bonded with the lens seat and the glass plate; at least one passive component is exposed in a sealed space limited by the circuit board, the lens seat and the glass plate. The lens module can prevent smudge from falling on the image sensor, thereby ensuring imaging quality.

Description

Camera lens module

Technical field

The present invention relates to a kind of camera lens module.

Background technology

Camera lens module generally comprises the structures such as image sensor, passive device and microscope base, wherein, passive device comprises electric capacity, resistance, the electronic devices and components that inductance equal-volume is less, in order to prevent dirty the falling in image sensor such as dust on passive device, particulate, generally can be on passive device glue coating dirty to seal.

Although above-mentioned way can prevent that dirty the falling on passive device from affecting on sensor, only, in glue coating process, glue also can fall in image sensor, and then affects the image quality of camera lens module.

Summary of the invention

In view of this, being necessary to provide a kind of prevents on passive device to the dirty camera lens module dropping in image sensor.

A kind of camera lens module, comprise some passive devices, microscope base, circuit board, image sensor and glass plate, described circuit board is fixed on picture side one end of described microscope base, described passive device and image sensor are electrically arranged on described circuit board, described passive device is positioned at described circuit board on the surface of described microscope base, the light-sensitive surface of described image sensor is towards the thing side of described microscope base, described glass plate is positioned at the light-sensitive surface top of described image sensor, between described glass plate and described microscope base, there is a resisting medium, described resisting medium and described microscope base and glass plate are bonding, have at least described passive device exposed by described circuit board, microscope base, in the confined space limiting with glass plate.

Compared to prior art, in the camera lens module of the present embodiment, passive device is sealed in the region that circuit board and microscope base limit, so, even glue coating not on passive device, dust on passive device, particulate etc. are dirty also can not be fallen in image sensor, or, even if passive device glue coating also can prevent that glue from polluting image sensor.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of embodiment of the present invention camera lens module.

Main element symbol description

Camera lens module	10
		Lens barrel	11
Microscope base	12
		First	121
Second portion	122
		Bulge-structure	123
Circuit board	13
		Image sensor	14
Glass plate	15
		Passive device	16
Resisting medium	17

Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.

Embodiment

Refer to Fig. 1, the camera lens module 10 that the embodiment of the present invention provides is used for imaging, and camera lens module 10 can have and focuses or other function such as zoom.

Camera lens module 10 comprises lens barrel 11, microscope base 12, circuit board 13, image sensor 14, glass plate 15, some passive devices (being called again passive element) 16 and resisting medium 17, and lens barrel 11 is incorporated in microscope base 12 and in lens barrel 11 and is provided with one or several eyeglasses by screw thread.

Circuit board 13 can be hardboard or soft board, and image sensor 14 can be ccd sensor or cmos sensor, and passive device 16 comprises the electronic packages such as resistance, electric capacity, inductance.

Microscope base 12 comprises the first coaxial tubular article 121 and the second tubular article 122, the first tubular article 121 is used for combining with lens barrel 11, formation annular bulge-structure 123 is protruded to the central axis direction of microscope base 12 in the first tubular article 121 and the second tubular article 122 junctions, the width of bulge-structure 123 (length that extend to central shaft the first tubular article 121 and the second tubular article 122 junctions) can be greatly, can be little, however block the light entering in image sensor 14.

Lens barrel 11 is positioned at the first tubular article 121 of microscope base 12, and circuit board 13 is fixed on the second tubular article 122 away from the end of the first tubular article 121.

Passive device 16 and image sensor 14 are electrically arranged at circuit board 13 on the surface of microscope base 12 inside so that passive device 16 and image sensor 14 are positioned at the second tubular article 122 of microscope base 12, and the light-sensitive surface of image sensor 14 is towards microscope base 12.

Two surfaces of glass plate 15 are bonded on image sensor 14 and bulge-structure 123 by resisting medium 17, passive device 16 is sealed in the region of image sensor 14, glass plate 15, circuit board 13 and microscope base 12 common restrictions, so, even if at least one or whole passive device 16 be glue coating not, dust on passive device 16, particulate etc. are dirty can not fallen in image sensor 14 yet, or, even if passive device 16 glue coatings, also can prevent that glue from polluting image sensor 14.

The rete of one fixed structure can be set with the light of the certain wavelength of filtering on glass plate 15, for example, infrared filtering film or infrared cut-off light filtering films.Rete can be arranged on glass plate 15 by modes such as evaporation, sputters.

Resisting medium 17 is positioned at the fringe region of glass plate 15, not block the light-sensitive surface of image sensor 14, is advisable.

Resisting medium 17 can be curing glue or double sticky tape.

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

Claims

1. a camera lens module, comprise some passive devices, microscope base, circuit board, image sensor and glass plate, described circuit board is fixed on one end of described microscope base, described passive device and image sensor are electrically arranged on described circuit board, described passive device is positioned at described circuit board on the surface of described microscope base, the light-sensitive surface of described image sensor is towards described microscope base, described glass plate is positioned at the light-sensitive surface top of described image sensor, it is characterized in that, between described glass plate and described microscope base, there is a resisting medium, described resisting medium and described microscope base and glass plate are bonding, have at least described passive device exposed by described circuit board, in the confined space that microscope base and glass plate limit.

2. camera lens module as claimed in claim 1, is characterized in that, described resisting medium is glue or double sticky tape.

3. camera lens module as claimed in claim 1, is characterized in that, described microscope base comprises the first tubular article and the second tubular article, and formation bulge-structure is protruded to the central shaft of described microscope base in described the first tubular article and the second tubular article junction.

4. camera lens module as claimed in claim 3, is characterized in that, described glass plate is glued on described bulge-structure by described resisting medium.

5. camera lens module as claimed in claim 1, is characterized in that, on described glass plate, is provided with filter coating.

6. camera lens module as claimed in claim 5, is characterized in that, described filter coating is infrared filtering film or infrared cut-off light filtering films.

7. camera lens module as claimed in claim 3, is characterized in that, described image sensor is positioned at described the second tubular article.

8. camera lens module as claimed in claim 3, is characterized in that, described camera lens module further comprises a lens barrel, and described lens barrel is positioned at described the first tubular article.

9. camera lens module as claimed in claim 8, is characterized in that, described camera lens module further comprises an eyeglass, and described eyeglass is positioned at described lens barrel.