A kind of lens bracket and lens assembly
Technical field
The utility model relates to apparatus for making a video recording accessory field, relates to more specifically a kind of lens bracket and lens assembly.
Background technology
Along with the development of multimedia technology, the application of lens assembly is more and more extensive, is all applied at digital camera, video camera and in electronic products such as the mobile phones of camera function.Digital camera, video camera and with the mobile phone of camera function when filmed image quality aspect is constantly improved, its structure is more and more to compact future development.
Lens assembly generally comprises the structures such as camera lens, voice coil motor, image sensor, lens bracket, coil, outside framework and permanent magnet.Camera lens is fixed on lens bracket, and lens bracket outer wall is tied with coil, and permanent magnet is fixed on outside framework.In the time of coil electricity, coil is received the magnetic fields that permanent magnet produces, and makes lens bracket drive camera lens to move along the axial direction of camera lens, thereby changes camera lens and affect concrete between sensor, and then realization is focused.
Lens bracket is used for connecting voice coil motor and flexible PCB, and generally, the shape of lens bracket and the shape of voice coil motor are suitable.In prior art, between voice coil motor and lens bracket, paste and fix by glue, but in taping process, between lens bracket and the surface of contact of voice coil motor, usually have gas and exist.If gas cannot be cleared out completely, will between lens bracket and voice coil motor, produce bubble, affect sticking effect, and then affect the usability of lens assembly.
In addition, as shown in Figure 1, lens bracket 1 of the prior art ' the sideline 2 ' parallel with the central axis of light hole in light hole cross section, be straight-tube shape structure.In the time that incident ray is inclined, the lens bracket 1 of the said structure ' easily light of heeling condition is reflected, causes translucent effect undesirable.
Utility model content
The purpose of this utility model is, proposes a kind of lens bracket that is provided with vent port, can effectively solve on the surface of contact of lens bracket and voice coil motor and deposit alveolate problem.
Another object of the present utility model is, proposes a kind of lens bracket, and the sidewall of the light hole of lens bracket and the central axis of light hole are certain angle of inclination, has solved the bad problem of lens bracket translucent effect in prior art.
Another object of the present utility model is, proposes a kind of lens assembly, can effectively improve translucent effect, and user experiences better.
For reaching this object, the utility model by the following technical solutions:
A kind of lens bracket, comprises the rack body that is framed structure, and a side of described rack body is connected with voice coil motor, and opposite side is connected with flexible PCB, and a drift angle place of described rack body offers the vent port that runs through rack body.
Preferably, the diameter of described vent port is 0.25mm ± 0.01mm.
Preferably, the distance of the described rack body side of the geometric center of described vent port distance is 0.60mm ± 0.01mm.
Preferably, the distance on the geometric center of the described vent port described rack body top margin of distance and/or base is 0.60mm ± 0.01mm.
Further, on the top margin of described rack body and/or base, be provided with the fixed sturcture for fixed lens.
Preferably, described fixed sturcture is arranged at the centre position place on described rack body top margin and/or base; Described fixed sturcture is screw.
Further, on described rack body, be provided with light hole, between the sidewall of described light hole and the central axis of described light hole, be and preset angle.
Preferably, described in, presetting the angle number of degrees is 20 ° ± 3 °.
Further, the inner wall section area that described light hole is positioned at voice coil motor one side is greater than described light hole and is positioned at the inner wall section area of flexible PCB one side.
A kind of lens assembly, comprises lens mount, voice coil motor and flexible PCB, also comprises lens bracket as above, and described lens mount is fixed on described lens bracket, and described flexible PCB is set in the outside of described lens mount.
The beneficial effects of the utility model are:
(1) the utility model is provided with the vent port that runs through rack body on lens bracket body, in the process of pasting between to voice coil motor and camera lens, vent port can be discharged the gas existing between lens bracket and voice coil motor surface of contact, prevent bubble, make the sticking effect between lens bracket and voice coil motor better;
(2) in the utility model, the sidewall of lens bracket light hole and the central axis of described light hole are and preset angle, change the straight-tube shape structure of the inner wall section of original light hole, in the time that irradiating, the light tilting is difficult for producing the phenomenon of reflection, effectively increased the percent of pass of oblique light ray, user experiences better;
(3) the utility model is provided with fixed sturcture on lens bracket, dissimilar lens mount and this lens bracket can be removably connected, thereby dissimilar camera lens can be installed, and meets the diversified demand of user.
Brief description of the drawings
Fig. 1 is the cross section structure schematic diagram of lens bracket in prior art;
Fig. 2 is the front view of the lens bracket that proposes of the utility model embodiment mono-;
Fig. 3 is the rear view of the lens bracket that proposes of the utility model embodiment mono-;
Fig. 4 is the cross section structure schematic diagram of the lens bracket that proposes of the utility model embodiment mono-.
In figure:
1 ', lens bracket; 2 ', sideline; 1, rack body; 11, top margin; 12, side; 13, base; 2, sideline; 3, light hole; 4, fixed sturcture; 5, vent port.
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.
Embodiment mono-
As Figure 2-3, it is a kind of lens bracket that the present embodiment proposes, comprise the rack body 1 that is framed structure, one side of described rack body 1 is connected with voice coil motor, opposite side is connected with flexible PCB, and a drift angle place of described rack body 1 offers the vent port 5 that runs through rack body.The diameter of described vent port 5 is 0.25mm ± 0.01mm, is preferably 0.25mm.The present embodiment is provided with the vent port 5 that runs through rack body 1 on rack body 1, in the process of pasting between to voice coil motor and camera lens, vent port 5 can be discharged the gas existing between lens bracket and voice coil motor surface of contact, prevent bubble, make the sticking effect between lens bracket and voice coil motor better.
The distance of the described rack body side 12 of geometric center distance of described vent port 5 is 0.60mm ± 0.01mm; The distance on the described rack body top margin 11 of distance and/or base 13 is 0.60mm ± 0.01mm.Vent port 5 in the present embodiment is arranged on the upper right corner of rack body 1, distance bracket body side 12 be specially 0.60mm, the distance of distance bracket body top margin 11 is 0.60mm.But the position of vent port 5 is not limited to above-mentioned position, can also be arranged on the upper left corner, the lower right corner or the position, the lower left corner of rack body 1, as long as can be by the Bas Discharged between the surface of contact of rack body 1 and voice coil motor.
In order to make the lens bracket in the present embodiment can coordinate more camera lens to use, facilitate the camera lens of different model to change, on the top margin 11 of the rack body 1 in the present embodiment and/or base 13, be provided with the fixed sturcture 4 for fixed lens.As one preferred embodiment, described fixed sturcture 4 is arranged at the centre position place on described rack body top margin 11 and/or base 13, and the fixed sturcture 4 in the present embodiment is screw.
As shown in Figure 4, on described rack body 1, be provided with light hole 3, the central axis of the sidewall of described light hole 3 and described light hole 3 is and presets angle, the cross section at central axis place and the inwall of described light hole 3 that are described light hole 3 form sideline 2, described sideline 2 is and presets angle with the central axis of light hole 3, preferably, the angle number of degrees that preset angle described in are 20 ° ± 3 °.The angle number of degrees that preset in the present embodiment are 20 °.
The area of section that described light hole 3 is positioned at voice coil motor one side inwall is greater than described light hole 3 and is positioned at the inner wall section area of flexible PCB one side.When light hole 3 be shaped as circle time, the diameter that described light hole 3 is positioned at the inner wall section of voice coil motor one side is greater than described light hole 3 and is positioned at the diameter of the inner wall section of flexible PCB one side; When light hole 3 be shaped as rectangle time, described light hole 3 be positioned at the inner wall section of voice coil motor one side rectangle length and be highly greater than described light hole 3 be positioned at the inner wall section of flexible PCB one side rectangle length and height.
In the present embodiment, the central axis of the inwall of lens bracket light hole 3 and described light hole 3 is and presets angle, change the straight-tube shape structure of the inner wall section of original light hole 3, in the time that irradiating, the light tilting is difficult for producing the phenomenon of reflection, the percent of pass that has effectively increased oblique light ray, user experiences better.
Embodiment bis-
The present embodiment discloses a kind of lens assembly, comprise lens mount, voice coil motor and flexible PCB, also comprise disclosed lens bracket in embodiment mono-, described lens bracket one side is connected with voice coil motor, one end is connected with flexible PCB, described lens mount is fixed on described lens bracket, and described flexible PCB is set in the outside of described lens mount.
Lens assembly in the present embodiment, due to the lens bracket that comprises that embodiment is a kind of, on lens bracket, be provided with fixed sturcture, dissimilar lens mount and this lens bracket can be removably connected, thereby dissimilar camera lens can be installed, meet the diversified demand of user.
Below described in conjunction with specific embodiments know-why of the present utility model, these are described is in order to explain principle of the present utility model, can not be interpreted as by any way the restriction to the utility model protection domain.Based on explain herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, within these modes all will fall into protection domain of the present utility model.