CN2694300Y

CN2694300Y - Image view-finding unit

Info

Publication number: CN2694300Y
Application number: CN 200320117976
Authority: CN
Inventors: 李俊佑; 蔡明江; 江宗韦
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: 2003-11-08
Filing date: 2003-11-08
Publication date: 2005-04-20
Anticipated expiration: 2013-11-08

Abstract

The utility model discloses an image view-finding unit, comprising an external lens barrel, an internal lens barrel, a plurality of lenses, a basic base which includes a base and a framing barrel, an image sensor that is used for converting light signals to electrical signals. Wherein, a plurality of lenses are respectively arranged and fixed inside the internal lens barrel and the external lens barrel. The internal lens barrel can be plugged into the external lens barrel and move correspondingly. The lens barrel of the image view-finding unit of the utility model can adjust the space between lenses and adjust lenses to make the light axis aim, and improve good quality rate of assembling.

Description

Image capture unit

[technical field]

The utility model be about a kind of be used for portable electron device image capture unit.

[background technology]

Along with the continuous development of science and technology, portable electron device such as mobile phone are used increasingly extensively, also day by day trend towards simultaneously light and handy, attractive in appearance and multifunction, and wherein camera function is the additional function of new development mobile phone in recent years.Please refer to shown in Figure 1ly, at present the image capture unit 10 of the digital camera of widespread usage generally comprises a plurality of lens 130, a plurality of rubber blanket 132, lens barrel 12, pedestal 14 and sensor 16.This lens barrel 12 comprises a stack shell 120 and a loam cake 122, this stack shell 120 be a hollow circuit cylinder to hold this a plurality of rubber blankets 132 and a plurality of lens 130, its outer wall is provided with screw thread.Sensor 16 is installed on the circuit board 15, is connected with interlock circuit on it.Pedestal 14 comprises base 141 and the tube 142 of finding a view, and base 141 can be fixed on the circuit board 15.Tube 142 correspondences of finding a view are installed in sensor 16 tops, and tube 142 inwalls of finding a view are provided with the screw thread with the threads engaged of lens barrel 12 outer walls.During assembling, these a plurality of lens 130 and a plurality of rubber blanket 132 plug at interval is contained in the cavity of this stack shell 120, these a plurality of rubber blankets 132 between a plurality of lens 130 to locate the spacing of these a plurality of lens 130.Pedestal 14 is fixed on the circuit board top, makes the tube of finding a view over against sensor 16.Again lens barrel 12 is inserted the tube of finding a view, utilize stack shell 120 outer walls and the threaded adjustment lens combination that tube 142 inwalls of finding a view match and the spacing of sensor 16, the lens barrel 12 and the tube 142 of finding a view is fixing when the most clear to imaging.Because rubber blanket is yielding, cause the angular deviation of lens during plug dress lens easily, optical axis is inaccurate, and the assembling yield is on the low side, influences the image quality of digital camera, and in addition, when the spacing of these a plurality of lens did not reach requirement because of accidental cause, this spacing inconvenience was regulated.

In view of this, provide spacing and aligning lens combination optical axis between a kind of adjustable lens, the image capture unit that improves the assembling yield is necessary in fact.

[utility model content]

The purpose of this utility model is to provide a kind of lens position adjustable, thereby spacing and aim at the lens combination optical axis between adjustable lens improves the image capture unit of assembling yield.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: image capture unit of the present utility model comprises: an outer lens barrel; One inner lens cone; A plurality of lens; One pedestal, this pedestal comprise base and the tube of finding a view; One image sensor is used for light signal is converted into electric signal; Wherein, these a plurality of lens are mounted and fixed on respectively in inner lens cone and the outer lens barrel, being somebody's turn to do the internal diameter of outer lens barrel and the external diameter of inner lens cone matches, inner lens cone can insert outer lens barrel and its motion relatively, the internal diameter of the tube of finding a view of the external diameter of outer lens barrel and pedestal matches, outer lens barrel can insert find a view tube and its motion relatively, and image sensor is contained in the base of pedestal.

The beneficial effects of the utility model are: image capture unit of the present utility model is installed in lens respectively in inner lens cone and the outer lens barrel, this inner lens cone and the two relative position of outer lens barrel can change, thereby spacing and adjustment lens make its optical axis alignment between adjustable lens, improve the lens barrel of assembling yield.

[description of drawings]

Fig. 1 is existing image capture unit disassembly diagram.

Fig. 2 is an image capture unit disassembly diagram of the present utility model.

Fig. 3 is the assembly drawing of image capture unit of the present utility model.

Fig. 4 is that Fig. 3 is along IV-IV direction cut-open view.

Fig. 5 is the stereographic map that image capture unit of the present utility model is adjusted instrument.

[embodiment]

Please refer to shown in Figure 2ly, image capture unit 20 of the present utility model comprises an outer lens barrel 21, an inner lens cone 22, first lens 210, second lens 220, a pedestal 24 and an image sensor 26.

Outer lens barrel 21 is hollow circular cylinders, and the one end is provided with top cover 211, and this top cover 211 is used for protecting lens and can allows extraneous light incide on the lens.The outer wall that is somebody's turn to do outer lens barrel 21 is provided with first screw thread 212, is used for and pedestal 24 installation cooperations.First lens 210 are circular aspheric lenses normally, is mounted and fixed on outer lens barrel by top cover 211 1 ends.Inner lens cone 22 is hollow circular cylinders, and the one end is provided with a plurality of draw-in grooves 222.The internal diameter of the external diameter of this inner lens cone 22 and outer lens barrel 21 matches, and makes inner lens cone 22 can insert in the outer lens barrel 21, and closely cooperates with it and do not become flexible.Simultaneously, the length of inner lens cone should be appropriate, and it does not stretch out outer lens barrel 21 to guarantee the assembling back.Second lens 220 are generally circular aspheric lenses, are mounted and fixed on inner lens cone 22 away from draw-in groove 222 1 ends, and itself and first lens 210 are formed lens combination jointly, thereby incident ray can be focused on the image sensor 26.

Sensor 26 is installed on the circuit board 25, and is connected with other interlock circuits.This sensor 26 can be converted into electric signal with the light signal that is received for writing down the semiconductor subassembly that light changes.This sensor 26 can be CCD (Charge Coupled Device, charge coupled device) or CMOS (Complementary Metal-Oxide Semiconductor, complementary metal oxide semiconductor (CMOS)).Pedestal 24 comprises base 241 and the tube 242 of finding a view, second screw thread 243 that tube 242 inwalls of finding a view are provided with and first screw thread 212 of outer lens barrel 21 outer walls matches.Outer lens barrel 21 can insert the tube 242 of finding a view, and moves up and down by first screw thread 212 and the rotation of second screw thread 243 and with respect to the tube 242 of finding a view.

Please refer to shown in Figure 5ly, this adjustment instrument 30 is used for adjusting inner lens cone 22 position of lens barrel 21 outside.This adjustment instrument 30 comprises that a junction divides 31 and one rotating part 32.Coupling part 31 is hollow circular cylinders, and its external diameter is slightly less than the external diameter of inner lens cone 22, also can rotate to it thereby can make this adjustment instrument 30 insert outer lens barrel 21.Coupling part 31 1 ends are provided with a plurality of cards 33, and the draw-in groove 222 of this card 33 and inner lens cone 22 matches.Rotating part 32 be located at coupling part 31 away from card 33 1 ends, its external diameter is convenient to operate this rotating part 32 greater than the external diameter of coupling part 31, makes the rotation of its this adjustment instrument 30 that rotates.It is laborsaving more when then rotating that the external diameter of this rotating part 32 is big more.The length of connecting portion 31 is answered long enough, adjust inner lens cones 22 position in the lens barrel 21 outside in the outer lens barrel 21 so that be inserted into, and rotating part 32 exposes outer lens barrel 31, use during for this adjustment instrument 30 of rotation.For the ease of operation, also can be arranged to square rotating part 32 that should adjustment instrument 30 or other polygons, or on the lateral wall of rotating part 32, anti-slip tank is set.

Please refer to Fig. 3 and shown in Figure 4, when assembling this image capture unit 20, at first first lens 210 are mounted and fixed in the outer lens barrel 21, second lens 220 are mounted and fixed in the inner lens cone 22 have draw-in groove 222 1 ends away from it near top cover 211 1 ends.An end that again inner lens cone 22 is equipped with second lens 220 inserts in the outer lens barrel 21, thereby it has the close outer lens barrel 21 of draw-in groove 222 1 ends away from top cover 211 1 ends.To adjust instrument 30 then and insert outer lens barrel 21, the card 33 of adjustment instrument 30 and the draw-in groove 222 of inner lens cone 22 are engaged mutually, rotate rotating part 32, thereby driving inner lens cone 22 rotates, and then adjust inner lens cone 22 position in the lens barrel 21 outside, after the focal length of the lens combination that first lens 210 and second lens 220 are formed reached predetermined value and aims at optical axis, gluing was fixed.Base 241 is fixed on the circuit board 25, makes sensor 26 be contained in the base 241 and make and find a view tube 242 correspondences above sensor 26, incident ray can be incided on the sensor 26 by the tube 242 of finding a view.Inner lens cone after the assembling 22 and the outer lens barrel 21 common lens barrels that form are inserted the tube 242 of finding a view, utilize second screw thread 243 of first screw thread 212 of outer lens barrel 21 outer walls and tube 242 inwalls of finding a view to rotate the distance of adjusting lens combination and sensor 26, get final product when image quality is best, gluing is fixed then.

Be appreciated that between the inwall of the outer wall of inner lens cone 22 and outer lens barrel 21 also can be provided with the accurate thread that matches, inner lens cone can be by the outer lens barrel of this screw thread precession, thereby adjusts inner lens cone 22 position in the lens barrel 21 outside.

Claims

1. an image capture unit comprises: a plurality of lens; One pedestal, this pedestal comprise base and the tube of finding a view; One image sensor is used for light signal is converted into electric signal; Wherein, this image sensor is contained in the base of pedestal; It is characterized in that: this image capture unit further comprises: an outer lens barrel; One inner lens cone; Wherein, these a plurality of lens are mounted and fixed on respectively in inner lens cone and the outer lens barrel, being somebody's turn to do the internal diameter of outer lens barrel and the external diameter of inner lens cone matches, inner lens cone can insert outer lens barrel and its motion relatively, the internal diameter of the tube of finding a view of the external diameter of outer lens barrel and pedestal matches, and outer lens barrel can insert find a view tube and its motion relatively.

2. image capture unit as claimed in claim 1 is characterized in that: described outer lens barrel is a hollow circular cylinder, and the one end is provided with a top cover.

3. image capture unit as claimed in claim 2 is characterized in that: described epi mirror drum outer wall is provided with first screw thread, and a described inwall of finding a view is provided with second screw thread with first threads engaged.

4. image capture unit as claimed in claim 1 is characterized in that: described inner lens cone is a hollow circular cylinder.

5. image capture unit as claimed in claim 4 is characterized in that: described inner lens cone one end is provided with a plurality of draw-in grooves.

6. image capture unit as claimed in claim 5 is characterized in that: the external diameter of described inner lens cone and the internal diameter of outer lens barrel match.

7. image capture unit as claimed in claim 6 is characterized in that: described inner lens cone can insert outer lens barrel and not become flexible.

8. image capture unit as claimed in claim 6 is characterized in that: described outer lens barrel inwall and inner lens cone outer wall are provided with the screw thread that cooperatively interacts, and inner lens cone can be by the outer lens barrel of this screw thread precession.

9. image capture unit as claimed in claim 1 is characterized in that: described image sensor is a charge coupled device.

10. image capture unit as claimed in claim 1 is characterized in that: described image sensor is a complementary metal oxide semiconductor (CMOS).