Camera lens carrying module
Technical field
The utility model relates to a kind of camera lens carrying module, and particularly relevant for a kind of camera lens carrying module that is used in the scanner.
Background technology
In the middle of numerous peripheral equipments of PC, scanner one of the basic outfit of can saying so.Camera lens carrying module in the scanner is the critical elements of the quality of decision scan-image.It is positioned at camera lens between image distance and object distance in order to carrying, and make the image light of the file to be scanned after lens focus, can accurately be projected to the photo-sensitive cell that is disposed on the circuit board (for example can be on the charge coupled cell (charge coupleddevice, CCD)).
Please refer to Figure 1A, it illustrates is to be used in traditional camera lens carrying module in the scanner to make image light be the synoptic diagram that photo-sensitive cell received.Traditional camera lens carrying module be with its on dispose photo-sensitive cell 110 circuit board 120 couple.Camera lens carrying module includes: lens bearing seat 130, it is in order to the camera lens 150 of carrying to an optical axis 140 should be arranged.
As illustrating among the figure, camera lens 150 just can make optical axis 140 by on the photo-sensitive cell 110, that is image light can be photo-sensitive cell 110 and receives when the X1 of position.
Please refer to Figure 1B, it illustrates is that the modulation camera lens enables to obtain the synoptic diagram that the optimal imaging position but makes optical axis generation shift phenomenon.Scanner is in the process of making, often all multifactor because of shaping error, the directional error of catoptron and the foozle of camera lens 150 etc. of scanning ray machine (chassis), and make the total optical path of actual total optical path and design have on certain degree that some are inconsistent.So what palpus modulation camera lens 150 made moves forward and backward along optical axis 140, makes camera lens 150 can arrive an appropriate location X2, makes to reach an optimal imaging position, it can make the quality of scan-image reach in optimization.
Optical axis 140 can be disposed at the photo-sensitive cell 110 on the circuit board 120 by Figure 1A illustrated, that is image luminous energy is received by photo-sensitive cell 110 accurately under originally designed ideal state.But because enable to obtain the optimal imaging position and modulate camera lens 150, but make optical axis 140 produce the phenomenon of skew, that is it will make photo-sensitive cell 110 can't receive image light (as illustrating among Figure 1B).
For the shift phenomenon that is produced in response to optical axis 140, please refer to Fig. 1 C, it illustrates is to adjust circuit board position so that photo-sensitive cell must be thought the synoptic diagram that optical axis passes through.Must think that by making the photo-sensitive cell 110 that is disposed on the circuit board 120 optical axis 140 is passed through, can adjust the position of circuit board 120 on composition surface 160, as shown in graphic, circuit board 120 is moved up (in like manner, if optical axis 140 deflections down, then can adjust circuit board 120 moves down), till optical axis 140 is able to by sensing element 110, again circuit board 120 fixedly is coupled on the composition surface 160 of camera lens carrying module.
Above-mentioned traditional camera lens carrying module though can modulate the optimal imaging position, can't solve the problem because of manufacturing or the magnification error that directional error caused.
By above as can be known, traditional camera lens carrying module, its shortcoming is: the magnification that can't modulate image makes it meet design load, makes the size of the scan-image that is scanned can't meet required.
Summary of the invention
Supervise in this, the purpose of this utility model is exactly that a kind of camera lens carrying module is being provided, purpose is to make employed scanner not only can modulate the optimal imaging position of sweep trace, and the problem that also can make known magnification can't meet design load can obtain effective solution.
According to above-mentioned purpose, the utility model proposes a kind of camera lens carrying module, be to be used for the one scan device, this camera lens carrying module is to couple with a circuit board that disposes a photo-sensitive cell on it, it is characterized in that this camera lens carrying module comprises at least:
One in order to carry the lens bearing seat of a camera lens, and this camera lens is to there being an optical axis, and this camera lens also can move to a lens location along this optical axis, and this lens bearing seat has the one first mitre joint face that is not orthogonal to this optical axis; And
One in order to carry the circuit board bearing seat of this circuit board, and this circuit board bearing seat also has one second mitre joint face and a positive composition surface;
Wherein, this second mitre joint face is smooth to be moved on this first mitre joint face, so that this circuit board bearing seat is coupled to each other after can moving to one first relative position with respect to this lens bearing seat, this circuit board then can smoothly move in this positive composition surface, so that this circuit board is coupled to each other after can moving to one second relative position with respect to this circuit board bearing seat, this second relative position is to make this optical axis by this photo-sensitive cell.
Wherein, also have a guide groove on this first mitre joint face, also have the guide rail corresponding to this guide groove on this second mitre joint face, this guide rail is can slide in this guide groove so that this second mitre joint face can smoothly move on this first mitre joint face.
Wherein, also have a guide rail on this first mitre joint face, also have the guide groove corresponding to this guide rail on this second mitre joint face, this guide rail is can slide in this guide groove so that this second mitre joint face can smoothly move on this first mitre joint face.
Wherein the coupling mode of this circuit board bearing seat and this lens bearing seat is a bolt.
Wherein the coupling mode of this circuit board and this circuit board bearing seat is a bolt.
A kind of scanner of the utility model has a circuit board that disposes a photo-sensitive cell on it, it is characterized in that this scanner comprises at least:
One in order to carry the lens bearing seat of a camera lens, and this camera lens is to there being an optical axis, and this camera lens also can move to a lens location along this optical axis, and this lens bearing seat has the one first mitre joint face that is not orthogonal to this optical axis; And
One in order to carry the circuit board bearing seat of this circuit board, and this circuit board bearing seat also has one second mitre joint face and a positive composition surface;
Wherein, this second mitre joint face can smoothly move on this first mitre joint face, so that this circuit board bearing seat is coupled to each other after can moving to one first relative position with respect to this lens bearing seat, this circuit board then can smoothly move in this positive composition surface, so that this circuit board is coupled to each other after can moving to one second relative position with respect to this circuit board bearing seat, this second relative position is to make this optical axis by this photo-sensitive cell.
Wherein, also have a guide groove on this first mitre joint face, also have the guide rail corresponding to this guide groove on this second mitre joint face, this guide rail is can slide in this guide groove so that this second mitre joint face can smoothly move on this first mitre joint face.
Wherein, also have a guide rail on this first mitre joint face, also have the guide groove corresponding to this guide rail on this second mitre joint face, this guide rail is can slide in this guide groove so that this second mitre joint face can smoothly move on this first mitre joint face.
Wherein the coupling mode of this circuit board bearing seat and this lens bearing seat is a bolt.
Wherein the coupling mode of this circuit board and this circuit board bearing seat is a bolt.
Description of drawings
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, better embodiment cited below particularly, and conjunction with figs. are described in detail below, wherein:
Figure 1A formula is used in traditional camera lens carrying module in the scanner, and to make image light be the synoptic diagram that photo-sensitive cell received.
Figure 1B is that the modulation camera lens enables to obtain the synoptic diagram that the optimal imaging position but makes optical axis generation shift phenomenon.
Fig. 1 C adjusts circuit board position so that photo-sensitive cell must be thought the synoptic diagram that optical axis passes through.
Fig. 2 A makes according to the camera lens of preferred embodiment of the present utility model carrying module to reach in the optimal imaging position and be synoptic diagram that photo-sensitive cell received.
Fig. 2 B is the synoptic diagram that can modulate optimum magnification according to the camera lens carrying module of preferred embodiment of the present utility model.
Fig. 3 A is the stereographic map according to the camera lens carrying module of preferred embodiment of the present utility model.
Fig. 3 B is the exploded view according to the camera lens carrying module of preferred embodiment of the present utility model.
Embodiment
Camera lens carrying module of the present utility model mainly is to utilize lens bearing seat and the circuit board bearing seat that has the mitre joint face respectively, is adjusted at relatively moving on the mitre joint face that joins each other, to modulate the design load of magnification, to suit the requirements.Its specific embodiment will be in hereinafter being illustrated.
Please refer to Fig. 2 A, it illustrates is to make according to the camera lens of preferred embodiment of the present utility model carrying module to reach in the optimal imaging position and be synoptic diagram that photo-sensitive cell received.Camera lens carrying module of the present utility model is to use in scanner.Camera lens carrying module is to couple with circuit board 210, then disposes photo-sensitive cell 220 on the circuit board 210.Camera lens carrying module includes: lens bearing seat 230 and circuit board bearing seat 240.Lens bearing seat 230 has the mitre joint face 235 that is not orthogonal to camera lens 260 pairing optical axises 250, and circuit board bearing seat 240 then has mitre joint face 245 and positive composition surface 247.
Lens bearing seat 230 is in order to carrying camera lens 260.And can adjust camera lens 260 and move forward and backward along optical axis 250, modulation camera lens 260 makes moves to lens location X3, can obtain an optimal imaging position.
240 of circuit board bearing seats are in order to bearer circuit plate 210.After adjustment camera lens 260 made and obtains the optimal imaging position, optical axis 250 can illustrate generation one side-play amount as institute in graphic.At this moment, adjust circuit board 210, make it smooth and move up and down, make circuit board 210 and to and circuit plate load bearing seats 240 temporarily fixedly couple after making circuit board 210 move to a suitable relative position with respect to circuit board bearing seat 240 in positive composition surface 247.The relative position of this moment is and can makes the position of optical axis 250 by photo-sensitive cell 220.
Please refer to Fig. 2 B, it illustrates is the synoptic diagram that can modulate optimum magnification according to the camera lens carrying module of preferred embodiment of the present utility model.In Fig. 2 A, behind modulation camera lens 260 and circuit board 210, can obtain the optimal imaging position and make optical axis 250 be able to by photo-sensitive cell 220.The image distance of this moment then is a0.
(traditional camera lens carrying module can't be adjusted magnification for the magnification that scanner had meet design load.), can adjust circuit board bearing module 240, its mitre joint face 245 can be smooth be moved, so that circuit board bearing seat 240 temporarily fixedly couples after can moving to a suitable relative position with respect to lens bearing seat 230 each other to the lower right in the mitre joint face 235 of lens bearing seat 230.This moment, resulting image distance was the a1 as shown in Fig. 2 B, and resulting magnification is the magnification that meets design load.Then, adjust circuit board 210 again, make optical axis 250 can pass through photo-sensitive cell 220.
Also it should be noted that and to adjust circuit board bearing module 240, its mitre joint face 245 can be smooth be moved to the upper left side in the mitre joint face 235 of lens bearing seat 230.Its purpose is to be to make circuit board bearing seat 240 to move to a suitable relative position with respect to lens bearing seat 230, makes it to obtain meeting the magnification of design load.
After modulating the magnification that meets design load, the optimal imaging position then may change to some extent.In order to allow to obtain the optimal imaging position once more, must be as illustrating among Fig. 2 A, adjust camera lens 260 once more and move forward and backward to a lens location along optical axis 250 and temporarily fix, and must adjust circuit board 210 once more, make photo-sensitive cell 220 must think that optical axis 250 passes through.
After adjusting the optimal imaging position, therefore magnification will be adjusted and change to some extent.At this moment, only need follow the relative position that utilizes mitre joint face 235,245 to adjust circuit board bearing seat 240 and lens bearing seat 230 as illustrating among Fig. 2 B, can obtain another image distance once more, can modulate the magnification that meets design load.Then, adjusting circuit board 210 again makes photo-sensitive cell 220 must think that optical axis 250 passes through to get final product.
It is above-mentioned that to utilize camera lens of the present utility model carrying module modulation optimal imaging position be a kind of convergence process with the process that meets the magnification of design load, that is, can draw optimal imaging position and the magnification that meets design load at last.
Please refer to Fig. 3 A, it illustrates is the stereographic map that carries module according to the camera lens of preferred embodiment of the present utility model.Find out that by knowing in graphic lens bearing seat 230 and 240 of circuit board bearing seats are to see through mitre joint face 235 to couple mutually with mitre joint face 245, the relative displacement of mitre joint face 235 and mitre joint face 245 thus, and can modulate the magnification that meets design load.
Also can find out that in Fig. 3 A the coupling mode that circuit board bearing seat 240 and lens bearing seat are 230 can be the mode of bolt, and the coupling mode of 240 of circuit board 210 and circuit board bearing seats can also be the mode of bolt.This is for providing the coupling mode of temporarily fixing to each other or permanent fixation.
Can have slotted hole 310 on the circuit board bearing seat 240, on lens bearing seat 230, then can have circular hole (not showing among the figure), and have screw thread in the circular hole.Because of circuit board bearing seat 240 has slotted hole 310, thus can littlely loosen the screw a little 320 with the mitre joint face 245 that makes circuit board bearing seat 240 can be on the mitre joint face 235 of lens bearing seat 230 little moving.Can obtain until modulation circuit plate load bearing seat 240 to one new relative positions one meet the magnification of design load after, screw screw 320 again and circuit board bearing seat 240 can fixedly be coupled on the lens bearing seat 230 get final product.
In like manner, can also have slotted hole 330 on the circuit board 210, on circuit board bearing seat 240, then can have circular hole (not showing among the figure), and have screw thread in the circular hole.Because of circuit board 210 has slotted hole 330, so can littlely loosen the screw a little 340 with make circuit board 210 can be on the positive composition surface 247 of circuit board bearing seat 240 little moving, can make photo-sensitive cell (not showing among the figure) by optical axis (not showing among the figure) when being passed through until modulation circuit plate 210 to one new relative positions, screw screw 340 again and circuit board 210 can fixedly be coupled on the circuit board bearing seat 240 get final product.
Please refer to Fig. 3 B, it illustrates is the exploded view that carries module according to the camera lens of preferred embodiment of the present utility model.Can know the relativeness of finding out 210 of lens bearing seat 230, circuit board bearing seat 240 and circuit boards in graphic.Be positioned at the slotted hole 310 on the circuit board bearing seat 240 and be positioned at the corresponding relation of 350 of circular holes on the lens bearing seat 230, and the corresponding relation that is positioned at the slotted hole 330 on the circuit board 210 and is positioned at 360 of circular holes on the circuit board bearing seat 240 also cocoa clearly seen by we look.
As illustrating among Fig. 3 B, can have guide groove 370 on the mitre joint face 235, then can have guide rail 380 on the mitre joint face 245 corresponding to guide groove 370.Guide rail 380 can slide in guide groove 370, mitre joint face 245 can smoothly be moved, in view of the above to modulate the magnification that meets design load on mitre joint face 235.On the contrary, also can have guide rail on the mitre joint face 235, then can have the guide groove corresponding to guide rail on the mitre joint face 245, guide rail also can slide in guide groove, mitre joint face 245 can smoothly be moved on mitre joint face 235, modulate the magnification that meets design load in view of the above.
From the above, camera lens carrying module provided by the utility model, it focuses on seeing through the adjustment to the relative position between two inclined-planes, and makes image distance can obtain modulation, and then can obtain meeting the magnification of design load.By the utility model, can solve the shortcoming that traditional camera lens carrying module can't be modulated magnification.
It should be noted that, the geometry of each object only is an embodiment of the present utility model among the embodiment, be not in order to limit applicable elements of the present utility model, anyly be familiar with this operator and all can be adjusted and reach and the similar function of the utility model, only still do not break away from spirit of the present utility model.
The disclosed camera lens carrying of the utility model the foregoing description module, the advantage that has is: the magnification that can modulate image makes it meet design load, makes the size of the scan-image that is scanned can meet required.
In sum; though the utility model discloses as above with a preferred embodiment; right its is not in order to limit the utility model; anyly have the knack of this operator; in not breaking away from spirit and scope of the present utility model; when being used for a variety of modifications and variations, therefore protection domain of the present utility model is as the criterion when looking accompanying the claim person of defining.