CN102809797B - Mechanism for accurately adjusting back focal length of lens of monitoring product - Google Patents
Mechanism for accurately adjusting back focal length of lens of monitoring product Download PDFInfo
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- CN102809797B CN102809797B CN201110405669.5A CN201110405669A CN102809797B CN 102809797 B CN102809797 B CN 102809797B CN 201110405669 A CN201110405669 A CN 201110405669A CN 102809797 B CN102809797 B CN 102809797B
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Abstract
The invention provides a mechanism for accurately adjusting a back focal length of a lens of a monitoring product. A user can manually adjust an adjustable knob exposed outside horizontally so as to enable a sensor circuit board inside to move up and down, so that the aim of adjusting a distance between the sensor circuit board and the lens is achieved. The mechanism is simple and convenient to operate, has a simple internal structure and is lower in cost, can be basically used for adjusting most CS interface lenses clearly in a current market, and has clearer images.
Description
Technical field
The present invention relates to watch-dog, especially monitoring product camera lens, particularly, relate to the mechanism of adjustment monitoring product rear lens focus distance.
Background technology
Camera lens is applied generally in camera, video camera products.Due to needs such as office, social security, life, daily interchanges, video camera is widely used, and popularizing especially along with internet, video monitoring is widely used in security administration field.For the camera used in video monitoring system, the camera lens of most of monitoring products is in the market all the object being reached adjustable lens focal length by electromotion focusing, and when using electromotion focusing, operation is comparatively complicated, and the equipment cost of power zoom is higher.
The present invention is desirable to provide a kind of mechanism of accurate adjustment monitoring product rear lens focus distance, and it should have simple, convenient feature, and inner structure is also uncomplicated, and cost is lower to be also expected to.
Summary of the invention
Mechanism operation for adjustment watch-dog rear lens focus distance similar in prior art is complicated, and the defect that cost is comparatively high, the object of this invention is to provide a kind of mechanism of accurate adjustment monitoring product rear lens focus distance.
According to an aspect of the present invention, a kind of mechanism of accurate adjustment monitoring product rear lens focus distance is provided, it is characterized in that, comprise spring bearer plate, back-moving spring, sensor circuit board, sensor circuit board fixing bracket, to guide pillar, lens fixing base, adjusting knob and external lens, the bottom of its inside is described adjusting knob, the upper surface of described adjusting knob and the lower surface of described sensor circuit board fixing bracket are affixed, described sensor circuit board fixing bracket places described sensor circuit board, described back-moving spring is placed at least one angle of described sensor circuit board fixing bracket, one piece of spring bearer plate is covered with on described back-moving spring, the inside of described lens fixing base is at least provided with three to guide pillar, described laminating respectively to guide pillar is arranged at described lens fixing base inside, described to guide pillar successively through described sensor circuit board fixing bracket, back-moving spring and spring bearer plate, described outside camera lens is also fixed in the bottom of described lens fixing base.
Preferably, the lower surface of described sensor circuit board fixing bracket is provided preferably with the first inclined-plane 42 of at least one projection, the upper surface of described conciliation knob is provided preferably with the second inclined-plane 71 of at least one projection, described first inclined-plane 42 adapts with the position on described second inclined-plane 71, both make described first inclined-plane 42 described second inclined-plane 71 vertical direction can be driven to move up and down by horizontally rotating towards symmetry.
Preferably, described spring bearer plate is at least provided with three the first through holes 11, described first through hole 11 is arranged on the relative both sides of described spring bearer plate, described sensor circuit board fixing bracket is at least provided with three the second through holes 41, and the shape of described first through hole and described second through hole, size and position and describedly to adapt to guide pillar, enable describedly just in time to penetrate described first through hole and described second through hole to guide pillar.
Preferably, the inside of described lens fixing base is at least provided with a described back-moving spring, described back-moving spring is placed between described spring bearer plate and described sensor circuit board fixing bracket, to described sensor circuit board fixing bracket downforce, make the first inclined-plane 42 of the lower surface of described sensor circuit board fixing bracket can touch the second inclined-plane 71 of the upper surface of adjusting knob.
Preferably, at least one side of described lens fixing base is provided with second groove 61, the centre of described second groove 61 is provided with second opening 62, position and the described adjusting knob of described second groove 61 and described second opening 62 adapt, and make a part for described adjusting knob can protrude the outside that be exposed at described lens fixing base from described second opening 62.
Preferably, one first groove 43 is provided preferably with in the middle of described sensor circuit board fixing bracket, its profile, size and described sensor circuit board adapt, and described sensor circuit board is provided with sensitive chip, and described sensor circuit board is fixed with in described first groove 43.
Preferably, the centre of described spring bearer plate is provided with one first opening 12, and described first opening 12 can be connected with other external equipments.
Preferably, the profile of described lens fixing base is a square.
The present invention is by providing a kind of mechanism of accurate adjustment monitoring product rear lens focus distance, user can manual Level tune its be exposed on the external adjusting knob, the sensor circuit board of its inside is moved up and down, thus reach the object of the distance regulated between sensor circuit board and camera lens, it is simple, convenient, and inner structure is also uncomplicated, and cost is lower, and adjustable clear most CS interface camera lens in the market substantially, image is also very clear.It is clear that the present invention realizes image to adjust by adjustment sensor plate movable, makes the camera lens of the different model of different manufacturers that mechanism can be used to adjust image, and product corresponding to the present invention has high popular style.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 illustrates according to the first embodiment of the present invention, the structural representation of the mechanism of described accurate adjustment monitoring product rear lens focus distance;
Fig. 2 illustrates according to a second embodiment of the present invention, the structural representation when mechanism of described accurate adjustment monitoring product rear lens focus distance uses;
According to the third embodiment of the invention Fig. 3 illustrates, the structural representation when mechanism of described accurate adjustment monitoring product rear lens focus distance uses;
Fig. 4 illustrates according to a fourth embodiment of the invention, the structural representation when mechanism of described accurate adjustment monitoring product rear lens focus distance uses; And
Fig. 5 illustrates according to a fifth embodiment of the invention, the contour structures schematic diagram after mechanism's installation of described accurate adjustment monitoring product rear lens focus distance.
Embodiment
The invention provides a kind of mechanism of accurate adjustment monitoring product rear lens focus distance, described watch-dog structure is simple, easy to adjust, unlike power zoom is so complicated in the market, cost is low, middle no-idle running, and sport efficiency is high, before and after the scope of adjustment wide, substantially can raise most monitoring product camera lens clearly in the market and it good can form image very clearly by the removal of images shadow that may occur to guide structure.
Fig. 1 shows according to the first embodiment of the present invention, the structural representation of the mechanism of described accurate adjustment monitoring product rear lens focus distance.Particularly, in the present embodiment, the mechanism of described accurate adjustment monitoring product rear lens focus distance mainly include spring bearer plate 1, back-moving spring 2, sensor circuit board (inductor circuit plate) 3, sensor circuit board fixing bracket 4, to guide pillar 5, lens fixing base 6, adjusting knob 7 and external lens 8.
According to embodiment illustrated in fig. 1, preferably, its top of mechanism of described accurate adjustment monitoring product rear lens focus distance is the lens fixing base 6 of a square, and its underpart is the columniform external lens 8 of a projection.Described lens fixing base 6 and the monnolithic case of described external lens 8 are similar to a traditional camera, and described lens fixing base 6 is for fixing described external lens 8, and be also the main framing of whole mechanism, other parts are all placed in its inside simultaneously.
More specifically, described spring bearer plate 1 is for pushing down described back-moving spring 2, to the pressure that described back-moving spring 2 one is downward, described spring bearer plate 1 is placed in the top of described back-moving spring 2, be placed in the described spring bearer plate 1 of described lens fixing base 6 inside in square, and the inside dimension of its size and described lens fixing base 6 adapts, its four angles are respectively provided with first through hole 11, the size of described first through hole 11 and position and the described size to guide pillar 5 adapt, described can right through described first through hole 11 to guide pillar 5, described spring bearer plate 1 is made to be fixed on described lens fixing base 6 inner, and can move up and down along to guide pillar 5, more specifically, the centre of described spring bearer plate 1 is provided with first opening 12, described first opening 12 is connected for other external equipments of the mechanism with described accurate adjustment monitoring product rear lens focus distance, the data line etc. of such as image, its size shape also should adapt with described external equipment, it will not go into details herein.
According to embodiment illustrated in fig. 1, those skilled in the art understand, in a change case, described spring bearer plate 1 can not be arranged described first through hole 11, particularly, described spring bearer plate 1 covers on described back-moving spring 2, owing to not arranging described first through hole 11, so described to guide pillar 5 not through described spring bearer plate 1, in the case, those skilled in the art understand, describedly now should design shorter to guide pillar, more specifically, describedly still penetrate described back-moving spring 2 to guide pillar 5, unlike, describedly do not pass described back-moving spring 2, thus, described back-moving spring 2 is made can still to have extruding space, and then, be supplied to the power that described sensor circuit board fixing bracket 4 one is downward, reach effect similar to the above embodiments, it will not go into details herein.
According to embodiment illustrated in fig. 1, further, be provided with described to guide pillar 5 in described lens fixing base 6, described is the guide that described sensor circuit board 3 moves up and down to guide pillar, and it can ensure that the center of described sensor circuit board 3 is consistent with the center of described external lens 8.Preferably, on described four angles being arranged at described lens fixing base 6 inside to guide pillar 5, and fit with described lens fixing base 6 inner tight.Describedly pass successively from the bottom to top to guide pillar 5 and fix described sensor circuit board fixing bracket 4, back-moving spring 2 and spring bearer plate 1, described back-moving spring 2 is fixed and between described spring bearer plate 1 and described sensor circuit board fixing bracket 4, downforce is provided for giving described sensor circuit board fixing bracket 4, the lower surface of described sensor circuit board fixing bracket 4 is made to be close to the upper surface of adjusting knob 7, described sensor circuit board fixing bracket 4 is then by the described below being fixed on described back-moving spring 2 to guide pillar 5, it is for fixing described sensor circuit board 3, and drive described sensor circuit board 3 to move up and down together, the distance between described sensor circuit board 3 and described external lens 8 is adjusted with this, preferably, the size and dimension of described sensor circuit board fixing bracket 4 also adapts with described lens fixing base 6, its four angles are also provided with the described position corresponding to guide pillar 5 and described the second through hole 41 adapted to guide pillar 5 size, make describedly just in time to penetrate described second through hole 41 to guide pillar 5.
More specifically, according to embodiment illustrated in fig. 1, those skilled in the art understand, preferably, the middle part of described sensor circuit board fixing bracket 4 upper surface is provided with the first groove 43 that a geomery and described sensor circuit board 3 adapt, described sensor circuit board 3 just in time can be placed into and be fixed in the first groove 43 of described sensor circuit board fixing bracket 4, the lower surface place of the four edges edge of described sensor circuit board fixing bracket 4 is preferably respectively provided with a first protruding inclined-plane 42, described first inclined-plane 42 is for being affixed with the inclined-plane of described adjusting knob 7 upper surface, thus by regulating described adjusting knob 7 to make described sensor circuit board fixing bracket 4 move up and down, described sensor circuit board 3 is then provided with sensor sensitive chip, and then moving up and down by described sensor circuit board 3, image-forming range between adjustable described sensor circuit board 3 and described external lens 8, form image clearly.
According to embodiment illustrated in fig. 1, further, described adjusting knob 7 is fixed in the below of described sensor circuit board fixing bracket 4, the similar disk of profile of described adjusting knob 7, preferably, the upper surface at four sides place of described adjusting knob 7 symmetry be respectively provided with one with second inclined-plane 71 of described first inclined-plane 42 towards the projection of symmetry, and the position on described second inclined-plane 71 is corresponding with the position on described first inclined-plane 42, thus, when adjusting the image-forming range of described sensor circuit board 3 and described external lens 8, described first inclined-plane 42 can be affixed all the time with described second inclined-plane 71, and then, can adjusting knob 7 described in manual rotation, described sensor circuit board fixing bracket 4 is made to drive described sensor circuit board 3 to move upward by described second inclined-plane 71 of its upper surface, reach the object of the focal length of adjustment, more specifically, described at least one side of lens fixing base 6 is provided with second groove 61, the position of described second groove 61 is corresponding with the position of described adjusting knob 7, and the centre of described second groove 61 is provided with second opening 62, described second opening 62 is fitted described adjusting knob 7, thus, a part for described adjusting knob 7 protrudes from described second opening 62 outside being exposed at described lens fixing base 6, user is enable to regulate described adjusting knob 7.
According to embodiment illustrated in fig. 1, more specifically, described to guide pillar 5 described first through hole 11 that pass corresponding to it, second through hole 41 and back-moving spring 2 are preferably respectively provided with four and are arranged on four angles of described lens fixing base 6 each one, and those skilled in the art understand, in some change case embodiment illustrated in fig. 1, described four positions that also can be arranged on other to guide pillar 5, only need described four symmetrical between two to guide pillar 5, the such as described mid point being arranged on four sides of described lens fixing base 6 to guide pillar 5, and in different change case embodiment illustrated in fig. 1, in order to strengthen the downforce being applied to described sensor circuit board 3 fixed support 4, described to guide pillar 5 described first through hole 11 that pass corresponding to it, second through hole 41 and back-moving spring 2 can arrange and be less than four, but at least should arrange three, make described sensor circuit board 3 parallel all the time with described external lens 8, and also can more than four, such as five, six, seven or eight, but need described to guide pillar 5 described first through hole 11 that pass corresponding to it, second through hole 41 is all arranged on the both sides that described sensor circuit board fixing bracket 4 is relative with back-moving spring 2, thus, ensure the depth of parallelism of described sensor circuit board 3 and described external lens 8, improve the sharpness of external lens 8 imaging, avoid the shadow that may occur, those skilled in the art understand, described change case cloud can be achieved in conjunction with embodiment illustrated in fig. 1, and reach and similar effect embodiment illustrated in fig. 1, it will not go into details herein.
Further, according to embodiment illustrated in fig. 1, those skilled in the art understand, in some change case of Fig. 1, described back-moving spring 2 also can not be established in the inside of described lens fixing base 6, some only need be set and can play the material of similar effect with described back-moving spring 2, there is provided the material of downforce namely can to described sensor circuit board fixing bracket 4, such as elastic caoutchouc etc., described change case all embodiment can be achieved described in composition graphs 1, and reach and similar effect embodiment illustrated in fig. 1, it will not go into details herein.
Further, according to embodiment illustrated in fig. 1, those skilled in the art understand, described preferably cylindrical to guide pillar 5, and in some change case, the described shape to guide pillar can adopt other shape, such as rectangle, triangle etc., and correspondingly, corresponding change also should be made to its corresponding described first through hole 11 with the shape of described second through hole 41, it will not go into details herein.
According to embodiment illustrated in fig. 1, those skilled in the art understand, in some change case embodiment illustrated in fig. 1, the upper surface of described sensor circuit board fixing bracket 4 can not arrange described first groove 43, and then, described sensor circuit board 3 is not fixed by described first groove 41, and use other method to be fixed on described sensor circuit board fixing bracket 4, such as by the mode of welding, described sensor circuit board 3 is welded on the upper surface of described sensor circuit board fixing bracket 4, or by arranging the mode such as screw and screw on described sensor circuit board 3 with described sensor circuit board fixing bracket 4, those skilled in the art understand, described change case all can be achieved by embodiment illustrated in fig. 1, and reach and similar effect embodiment illustrated in fig. 1, it will not go into details herein.
Further, according to embodiment illustrated in fig. 1, those skilled in the art understand, described second groove 61 and the second opening 62 are preferably only arranged in a side of described lens fixing base 6, and in some change case embodiment illustrated in fig. 1, focal length between described sensor circuit board 3 and described external lens 8 is regulated more easily in order to make user, second described second groove 61 and the second opening 62 or the 3rd can be set in other several sides of described lens fixing base, even arrange one in each side of described lens fixing base 6, described change case all can be achieved by embodiment illustrated in fig. 1, it will not go into details herein.
Fig. 2 shows according to a second embodiment of the present invention, the structural representation when mechanism of described accurate adjustment monitoring product rear lens focus distance uses.Particularly, described external lens 8 is fixed in the bottom of described lens fixing base 6, and its inside places described adjusting knob 7 from the bottom to top successively, sensor circuit board fixing bracket 4, sensor circuit board 3, back-moving spring 2 and spring bearer plate 1, described to guide pillar 5 then successively through described sensor circuit board fixing bracket 4, back-moving spring 2 and spring bearer plate 1(are as described in Figure 1), more specifically, when adjusting focal length increases the image-forming range of described sensor circuit board 3 and described external lens 8, adjusting knob 7 described in user's manual rotation, described adjusting knob 7 produces a component straight up by described second inclined-plane 71 of its upper surface four with the structure on described sensor circuit board fixing bracket 4 lower surface four the first inclined-planes 42, by described first inclined-plane 42 jack-up, described sensor circuit board fixing bracket 4 is made to drive described sensor circuit board 3 to move up, thus reach the object of the image-forming range increasing described sensor circuit board 3 and described external lens 8, and when adjusting focal length reduces the image-forming range of described sensor circuit board 3 and described external lens 8, described back-moving spring 2 passes to described sensor circuit board fixing bracket 4 one downforce and between described first inclined-plane 42 and the second inclined-plane 71, structure can make described sensor circuit board fixing bracket 4 drive described sensor circuit board 3 to move down, thus reach the object of the image-forming range reducing described sensor circuit board 3 and described external lens 8, and the scope of described adjustment is wide, 4.24mm can be reached, substantially to flirt most CS interface camera lens in the market.It will not go into details herein.
According to embodiment illustrated in fig. 2, more specifically, user can continue to rotate described adjusting knob 7 toward the direction, when described sense of rotation is the direction making described sensor circuit board 3 reduce with the image-forming range of described external lens 8, user can continue to rotate towards same sense of rotation until distance between described sensor circuit board 3 and described external lens 8 minimum after, rotating described adjusting knob 7 again will make described sensor circuit board 3 increase with the image-forming range of described external lens 8, similarly, when described sense of rotation is the direction making described sensor circuit board 3 increase with the image-forming range of described external lens 8, user can continue to rotate towards same sense of rotation until distance between described sensor circuit board 3 and described external lens 8 maximum after, rotating described adjusting knob 7 again will make described sensor circuit board 3 reduce with the image-forming range of described external lens 8, therefore, user also need not consider its direction rotated when rotating described adjusting knob 7, it is convenient to reconcile, simply, flexibly, its structure also can avoid stuck irreducible defect, second inclined-plane 71 and second inclined-plane 42 of sensor circuit board fixing bracket 4 lower surface of described conciliation knob 7 upper surface are all the curved surfaces according to helix Curve Design, therefore well can ensure under the downforce of back-moving spring 2 that described first inclined-plane 42 fully effectively contacts with between the second inclined-plane 71, this can improve greatly reconciles the efficiency that when button 7 rotates in the horizontal direction, described sensor circuit board fixing bracket 4 moves up and down, the appearance of idle motion can be avoided, well can ensure that described sensor circuit board 3 aligns with described external lens 8 center in addition under the guiding of described guidepost 5 and the pushing of back-moving spring 2, what can well ensure between described sensor circuit board 3 with described external lens 8 is parallel simultaneously, avoid occurring non-parallel situation therebetween, this will well improve the sharpness of described external lens 8 imaging and evade the shadow that image may occur, it will not go into details herein.
According to embodiment illustrated in fig. 2, more specifically, those skilled in the art understand, described first inclined-plane 42 and the surface on described second inclined-plane 71 should have suitable roughness, its friction factor should about 0.35, make to produce certain friction force between described first inclined-plane 42 and described second inclined-plane 71, the horizontal component that described back-moving spring 2 can be applied to the downforce on described first inclined-plane 42 by described friction force offsets, slide to avoid described first inclined-plane 42 and described second inclined-plane 71 to produce, the two relative position is not fixed, and then the imaging that described external lens 8 occurs is unstable, situation about even can not focus, it will not go into details herein.
According to embodiment illustrated in fig. 2, further, those skilled in the art understand, preferably, the lower surface of described sensor circuit board fixing bracket 4 arranges four described first inclined-planes 42, and the upper surface of described adjusting knob 7 also arranges four described second inclined-planes 71, and in different change case, described first inclined-plane 42 can be different from the quantity on described second inclined-plane 71, the such as lower surface of described sensor circuit board fixing bracket 4 arranges described first inclined-plane 42, and the upper surface of described adjusting knob 7 also arranges described second inclined-plane 71, or the lower surface of described sensor circuit board fixing bracket 4 arranges two described first inclined-planes 42, and the upper surface of described adjusting knob 7 arranges three described second inclined-planes 71 etc., described change case all can be achieved in conjunction with embodiment illustrated in fig. 2, and reach and similar effect embodiment illustrated in fig. 2, it will not go into details herein.
According to the third embodiment of the invention Fig. 3 illustrates, the structural representation when mechanism of described accurate adjustment monitoring product rear lens focus distance uses.The present embodiment can be understood as a change case of above-mentioned Fig. 2, in order to be illustrated more clearly in the difference of the present embodiment and above-mentioned Fig. 2, the present embodiment show separately the structural representation of the part of described sensor circuit board fixing bracket 4 and described adjusting knob 7, particularly, the lower surface of described sensor circuit board fixing bracket 4 does not establish the first inclined-plane 42 shown in Fig. 1 or Fig. 2, and the projection of the upper surface of described adjusting knob 7 does not establish the second inclined-plane 71 shown in Fig. 1 or Fig. 2 yet, alternatively, the lower surface of described sensor circuit board fixing bracket 4 is the semicircular first circular arc 42' of concavity of a projection, and the upper surface of described adjusting knob 7 is also be the semicircular second circular arc 71' of concavity of a projection, those skilled in the art understand, embodiment illustrated in fig. 3ly do not affect specific embodiment of the invention, and can reach and similar effect embodiment illustrated in fig. 2, it will not go into details herein.
Fig. 4 shows according to a fourth embodiment of the invention, the structural representation when mechanism of described accurate adjustment monitoring product rear lens focus distance uses.The present embodiment can be understood as a change case of above-mentioned Fig. 2, in order to be illustrated more clearly in the difference of the present embodiment and above-mentioned Fig. 2, the present embodiment show separately the structural representation of the part of described sensor circuit board fixing bracket 4 and described adjusting knob 7, particularly, with embodiment illustrated in fig. 2 similar, the lower surface of described sensor circuit board fixing bracket 4 is similar the 3rd inclined-plane 42'' in the first inclined-plane 42 shown in Yu Fig. 1 or Fig. 2, and the upper surface of described adjusting knob 7 is also the 4th inclined-plane 71'' that the second inclined-plane 71 shown in Fig. 1 or Fig. 2 is similar, with embodiment illustrated in fig. 2 unlike, the inclined-plane of described 3rd inclined-plane 42'' and described 4th inclined-plane 71'' is towards relative, its mode implemented is similar to the mode that nut (horizontally rotating) is implemented with bolt (moving up and down), but those skilled in the art understand, in the process of the actual enforcement of described change case, the imaging precision of described external lens 8 may be caused not to be very high, sensor plate center and optical center misalignment can be caused in gap between the inclined-plane of described 3rd inclined-plane 42'' and described 4th inclined-plane 71'', this misalignment can have influence on image image quality further, certain angle that there will be image occur shadow or image local area fuzzy, and there will be the situation of killing between the described 4th inclined-plane 71'' horizontally rotated after the 3rd inclined-plane 42'' and described 4th inclined-plane 71'' has moved to extreme position and the described 3rd inclined-plane 42'' moved up and down, be unfavorable for returning, it will not go into details herein.
According to Fig. 2 to embodiment illustrated in fig. 4, further, those skilled in the art understand, in different change case, the lower surface of described sensor circuit board fixing bracket 4 and the upper surface of described adjusting knob 7 can be set to other shapes in correspondence with each other, but described shape need drive moving up and down of described sensor circuit board fixing bracket 4 by horizontally rotating of described adjusting knob 7, such as be set to relative triangle etc., those skilled in the art understand, these change case are all achieved by embodiment illustrated in fig. 2, and reach similar effect embodiment illustrated in fig. 2, it will not go into details herein.
Fig. 5 shows according to a fifth embodiment of the invention, the contour structures schematic diagram after mechanism's installation of described accurate adjustment monitoring product rear lens focus distance.Particularly, in the present embodiment, described lens fixing base 6 one-tenth square, its underpart connects described external lens 8, its inside to guide pillar successively through described sensor circuit board fixing bracket 4, back-moving spring 2 and spring bearer plate 1 and place described sensor circuit board 3 above described sensor circuit board fixing bracket 4, the upper surface touching described adjusting knob 7 of lower surface, a part for described adjusting knob 7 is exposed at the outside of described lens fixing base 6, be convenient to regulate to user, described lens fixing base 6 and the monnolithic case of described external lens 8 are similar to a traditional camera.
Further, according to embodiment illustrated in fig. 5, those skilled in the art understand, in some change case embodiment illustrated in fig. 5, the profile of described lens fixing base 6 can be different, such as rectangular parallelepiped or right cylinder etc., to adapt to the needs under different occasion, described change case all can be achieved in conjunction with embodiment illustrated in fig. 5, and does not affect specific embodiment of the invention, and it will not go into details herein.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (7)
1. one kind adjusts the mechanism of monitoring product rear lens focus distance, it is characterized in that, comprise spring bearer plate, back-moving spring, sensor circuit board, sensor circuit board fixed support, to guide pillar, lens fixing base, adjusting knob and external lens, the bottom of described lens fixing base inside is described adjusting knob, upper surface and the support bracket fastened lower surface of described sensor circuit board of described adjusting knob are affixed, described sensor circuit board fixed support places described sensor circuit board, described back-moving spring is placed at least one angle support bracket fastened to described sensor circuit board, one piece of spring bearer plate is covered with on described back-moving spring, the inside of described lens fixing base is at least provided with three to guide pillar, described laminating respectively to guide pillar is arranged at described lens fixing base inside, described to guide pillar successively through described sensor circuit board fixed support, back-moving spring and spring bearer plate, described external lens is also fixed in the bottom of described lens fixing base, wherein, the support bracket fastened lower surface of described sensor circuit board is provided with the first inclined-plane (42) comprising at least one projection, the upper surface of described adjusting knob is provided with the second inclined-plane (71) comprising at least one projection, described first inclined-plane (42) adapts with the position of described second inclined-plane (71), both are towards symmetry, make described second inclined-plane (71) described first inclined-plane (42) vertical direction can be driven to move up and down by horizontally rotating, when user continues to rotate described adjusting knob toward the direction, and the sense of rotation of described adjusting knob is when being the direction making the image-forming range of described sensor circuit board and described external lens reduce, user can continue to rotate towards same sense of rotation until distance between described sensor circuit board and described external lens minimum after, rotate described adjusting knob again to increase making the image-forming range of described sensor circuit board and described external lens, and when the sense of rotation of described adjusting knob is the direction making the image-forming range of described sensor circuit board and described external lens increase, user can continue to rotate towards same sense of rotation until distance between described sensor circuit board and described external lens maximum after, rotate described adjusting knob again to reduce making the image-forming range of described sensor circuit board and described external lens.
2. the mechanism of adjustment monitoring product rear lens focus distance according to claim 1, it is characterized in that, described spring bearer plate is at least provided with three the first through holes (11), described first through hole (11) is arranged on the relative both sides of described spring bearer plate, described sensor circuit board fixed support is at least provided with three the second through holes (41), and the shape of described first through hole and described second through hole, size and position and describedly to adapt to guide pillar, enable describedly just in time to penetrate described first through hole and described second through hole to guide pillar.
3. the mechanism of adjustment monitoring product rear lens focus distance according to claim 1 and 2, it is characterized in that, the inside of described lens fixing base is at least provided with a described back-moving spring, described back-moving spring is placed between described spring bearer plate and described sensor circuit board fixed support, to described sensor circuit board fixed support downforce, make first inclined-plane (42) of the support bracket fastened lower surface of described sensor circuit board can touch second inclined-plane (71) of the upper surface of adjusting knob.
4. the mechanism of adjustment monitoring product rear lens focus distance according to claim 1, it is characterized in that, at least one side of described lens fixing base is provided with second groove (61), the centre of described second groove (61) is provided with second opening (62), position and the described adjusting knob of described second groove (61) and described second opening (62) adapt, and make a part for described adjusting knob can be exposed at the outside of described lens fixing base from described second opening (62) protrusion.
5. the mechanism of adjustment monitoring product rear lens focus distance according to claim 1, it is characterized in that, one first groove (43) is provided with in the middle of described sensor circuit board fixed support, its profile, size and described sensor circuit board adapt, described sensor circuit board is provided with sensitive chip, and described sensor circuit board is fixed in described first groove (43).
6. the mechanism of adjustment monitoring product rear lens focus distance according to claim 1, is characterized in that, the centre of described spring bearer plate is provided with one first opening (12), and described first opening (12) can be connected with other external equipments.
7. the mechanism of adjustment monitoring product rear lens focus distance according to claim 1, is characterized in that, the profile of described lens fixing base is a square.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110405669.5A CN102809797B (en) | 2011-12-08 | 2011-12-08 | Mechanism for accurately adjusting back focal length of lens of monitoring product |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110405669.5A CN102809797B (en) | 2011-12-08 | 2011-12-08 | Mechanism for accurately adjusting back focal length of lens of monitoring product |
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| CN102809797A CN102809797A (en) | 2012-12-05 |
| CN102809797B true CN102809797B (en) | 2015-01-14 |
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| CN103149774A (en) * | 2013-03-20 | 2013-06-12 | 安徽现代电视技术有限公司 | Rear focusing structure for CCD (Charge Coupled Device) and CMOS (Complementary Metal-Oxide-Semiconductor Transistor) camera |
| CN103336400A (en) * | 2013-06-20 | 2013-10-02 | 杭州同尊信息技术有限公司 | Camera back focus regulating mechanism component |
| CN103546687B (en) * | 2013-07-31 | 2017-04-05 | Tcl数码科技（深圳）有限责任公司 | A kind of camera and electronic equipment of vertical telescopic |
| CN110557536B (en) * | 2019-09-12 | 2021-03-30 | Oppo广东移动通信有限公司 | Camera assembly and electronic equipment |
| CN112532811B (en) * | 2019-09-17 | 2022-06-03 | 浙江大华技术股份有限公司 | Sensor circuit board rotating assembly and camera with same |
| CN111031207A (en) * | 2019-12-16 | 2020-04-17 | 深圳市瀚晖威视科技有限公司 | Lens back focus continuous adjusting device and camera |
| CN113163102B (en) * | 2020-01-22 | 2023-03-24 | 浙江宇视科技有限公司 | Rear focus adjusting device and camera |
| CN111580336B (en) * | 2020-04-21 | 2022-06-07 | 福建福光股份有限公司 | Focusable camera inspection jig |
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| CN2304135Y (en) * | 1997-09-04 | 1999-01-13 | 欧普罗科技股份有限公司 | Solid-state camera focal-distance regulation device |
| CN2443396Y (en) * | 2000-10-20 | 2001-08-15 | 台湾视讯系统股份有限公司 | Lens focal distance regulating structure |
| CN100561282C (en) * | 2005-09-09 | 2009-11-18 | 鸿富锦精密工业（深圳）有限公司 | Numerical camera mould |
| JP4709848B2 (en) * | 2005-10-18 | 2011-06-29 | シャープ株式会社 | Lens unit and lens driving device |
| CN201025492Y (en) * | 2007-03-16 | 2008-02-20 | 远业科技股份有限公司 | Focusing adjusting device for monitor lens |
| CN201107453Y (en) * | 2007-09-24 | 2008-08-27 | 深圳市同洲电子股份有限公司 | Lens focal length adjusting device |
| CN201707529U (en) * | 2010-06-02 | 2011-01-12 | 松下系统网络科技(苏州)有限公司 | Camera back focus adjusting mechanism |
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