CN1246735C - Positioning device for camera lens and its focusing device - Google Patents

Positioning device for camera lens and its focusing device Download PDF

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Publication number
CN1246735C
CN1246735C CN02121367.4A CN02121367A CN1246735C CN 1246735 C CN1246735 C CN 1246735C CN 02121367 A CN02121367 A CN 02121367A CN 1246735 C CN1246735 C CN 1246735C
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China
Prior art keywords
setting element
limit
vertical rod
ratchet
lens
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Expired - Fee Related
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CN02121367.4A
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Chinese (zh)
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CN1464334A (en
Inventor
蔡镇硕
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Yudong Plasm Technology Co., Ltd.
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Primax Electronics Ltd
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Abstract

The present invention provides a focusing locating mechanism used for a camera lens. The camera lens comprises a base, a focusing lens, a locating element and a clamping and fastening device, wherein the base comprises a cylindrical vertical circular hole. The focusing lens is fixed in the circular hole in a rotatable mode, the locating element is fixed on the base in a horizontally mobile mode, and one side of the locating element in the horizontal direction comprises a ratchet side, a smooth side, a first end and a second end. The clamping and fastening device comprises a horizontal spiral arm and a vertical rod, the horizontal spiral arm and be horizontally moved above the locating element, and therefore, the vertical rod fixed below the locating element can contact side edges of the locating element which are positioned in horizontal direction.

Description

Camera lens and its focusing detent mechanism
Technical field
The invention provides a kind of focusing detent mechanism, particularly a kind of focusing detent mechanism that is used for camera lens.
Background technology
Please refer to Fig. 1, Fig. 1 is the vertical view of the lens driving apparatus 10 of traditional camera.Lens driving apparatus 10 is to be disclosed in No. 5,680,649, United States Patent (USP) numbering, and name is called " lens driving apparatus with camera of automatic focus function ".Lens driving apparatus 10 includes a pedestal 12, and it includes a columniform vertical circular hole 16, one focusing lens 14 rotatably is fixed in the circular hole 16, one driving ring 40 is fixed on the pedestal 12 in mode that can sideway swivel outside the circular hole 16 of pedestal 12, it is to be fixed on the pedestal 12 in the mode that fastens with driving ring 40 for one shutter interlock ring 44, one setting element 42, it is to be fixed on the pedestal 12 in the mode that fastens with driving ring 40 and setting element 42 for one camera lens interlock ring 18, one first bi-directional drive motor 20 and one second bi-directional drive motor 30 are fixed on the pedestal 12 respectively, one flexible member 34 is fixed on the pedestal, and a solenoid valve 22 is located on the pedestal 12.In addition, driving ring 40 be provided with one columniform protruding 46 its be with camera lens interlock ring 18 on one of actuated element 19 tablings, make that camera lens interlock ring 18 also can and then be pushed and then drive the rotation of focusing lens 14 when driving ring 40 is driven rotations.The second bi-directional drive motor 30 is to be used for driving shutter interlock ring 44 with the unlatching of control shutter (not shown) and cut out.The first bi-directional drive motor 20 is to be used for driving solenoid valve 22 so that setting element 42 is fixed on the predeterminated position, and and then interlock focusing lens 14 it is rotated on the corresponding position.In addition, the drive connection between setting element 42 and the solenoid valve 22 is reached via a neutral gear 70 and one first ratchet 50.
As shown in Figure 1, when the second bi-directional drive motor 30 via one second ratchet 32 drive shutter interlock ring 44 towards forward rotation when controlling the open site of this shutter, shutter interlock ring 44 can promote driving ring 40 interlock camera lens interlock rings 18 and drive focusing lens 14 rotations, simultaneously, driving ring 40 also can promote setting element 42 and makes a plurality of ratchets 43 of setting element 42 to engage with the open handle 60 of a shutter seriatim.Setting element 42 can rotate via drive a ratchet 50 with the tooth portion tabling of neutral gear 70.
When the second bi-directional drive motor 30 continues to drive shutter interlock ring 44 towards forward rotation to a predeterminated position (this predeterminated position is the appropriate location of user institute desire focusing), the first bi-directional drive motor 20 can control electromagnetic valve 22 be rotated further to prevent first ratchet 50, at this moment, because the effect of pulling back that the prevention effect of solenoid valve 22 can stop flexible member 34 to be produced for setting element 42, therefore, eyeglass interlock ring 18 and shutter interlock ring 44 all can not produce rotating action, and make lens driving apparatus 10 reach the purpose that focuses on and locate.At this moment, 44 on shutter interlock ring can arrive the position of default open shutter and open shutter, and camera lens interlock ring 18 also can drive focusing lens 14 rotates on this corresponding position it.
The second bi-directional drive motor 30 can continue towards forward rotation and drive shutter interlock ring 44 to one extreme positions 45,20 in the first bi-directional drive motor can drive solenoid valve 22 simultaneously and rotate first ratchet 50, makes first ratchet 50 and setting element 42 can turn to its corresponding extreme position respectively.This moment, the second bi-directional drive motor 30 can not provide any electric power to lens driving apparatus 10, that is to say after the second bi-directional drive motor 30 drives shutter interlock rings 44 to the utmost point fetch bit puts 45, lens driving apparatus 10 only need by the first bi-directional drive motor 20 provide slightly electric power so that the focusing detent mechanism of lens driving apparatus 10 (as: first ratchet 50, setting element 42, camera lens interlock ring 18, shutter interlock ring 44 and flexible member 34 etc.) return back on the reference position.After the first bi-directional drive motor driven solenoid valve 22 makes first ratchet 50 turn to its extreme position, the ratchet part of first ratchet 50 can break away from and the contacting of solenoid valve 22, one of being located on the pedestal 12 returning pull-spring 62 then can be towards oppositely flexibly being returned to its reference position with the open handle 60 of shutter, and this action is the closing motion of shutter.In addition, flexible member 34 also can be returned to its reference position with setting element 42 towards reverse elasticity ground, and linkedly shutter interlock ring 44, camera lens interlock ring 18 and first ratchet 50 is driven to its reference position.
From the above, the lens driving apparatus 10 of traditional camera has numerous and diverse focusing detent mechanism, and need a calutron and a gear combination, complexity and element cost are improved, and the structure of this high complexity also can't reduce assembly cost.In addition, though calutron can reach the function of precision positioning effectively, also reduced the usage space in the lens driving apparatus 10 of camera simultaneously.
Summary of the invention
Therefore, the invention provides a kind of focusing detent mechanism that is used in the camera lens, its simple design is significantly simplified the focusing location machinery of camera.
The object of the present invention is achieved like this, and a kind of camera lens promptly is provided, and it includes:
One pedestal, it includes a columniform vertical circular hole;
One focusing lens is installed in this circular hole, and can axially moving towards a first direction or a second direction along this circular hole central shaft;
One setting element, be fixed on this pedestal in the mode that can move horizontally, be used for making this focusing lens to be able in this circular hole, be positioned, and the side of this setting element horizontal direction includes a ratchet limit, one level and smooth limit, one first end and one second end lay respectively between two end points on this ratchet limit and level and smooth limit; And
One clamping device, it includes a horizontal rotary arm and is fixed in a movable manner on this pedestal, and one vertical rod be fixed in the downside of this horizontal rotary arm, this horizontal rotary arm can move horizontally in the top of this setting element and therefore make the vertical rod that is fixed in its downside be touched each side that this setting element is positioned at horizontal direction;
Wherein when this focusing lens by drive and when this first direction moves, the vertical rod of this clamping device can be affixed to the ratchet limit of this setting element by first end of this setting element and slide along this ratchet limit and stop when mobile and this ratchet limit fastens the position of this setting element is fixed in this focusing lens, when this focusing lens when this second direction moves, the vertical rod of this clamping device can slide along the level and smooth limit of this setting element up to by till first end of this setting element.
For achieving the above object, the present invention also provides a kind of lens locator, and it includes:
One pedestal, it includes a columniform vertical circular hole; Be used for ccontaining this focusing lens;
One setting element, articulating is in the periphery of this vertical circular hole, and it is rotatable to control the position of this focusing lens in this vertical circular hole, and this setting element includes a ratchet limit, one level and smooth limit, one first end and one second end lay respectively between two end points on this ratchet limit and level and smooth limit;
One first drive unit is used for driving this setting element and rotates towards one first sense of rotation;
One second drive unit is used to provide the driving force that this setting element rotates towards one second sense of rotation, and wherein this second direction is opposite with this first direction;
One clamping device, it includes a horizontal rotary arm, the one end is to be fixed on this pedestal, an and vertical rod, it is connected in the other end of this horizontal rotary arm, this horizontal rotary arm can move horizontally in the top of this setting element and therefore make the vertical rod that is fixed in its downside be touched each side that this setting element is positioned at horizontal direction, when this setting element is used for closing with this ratchet checkpost when this first sense of rotation turns to an ad-hoc location, to stop this second drive unit that this setting element is rotated towards this second sense of rotation, and reach the location this focusing lens function, when this focusing lens when this second direction moves, the vertical rod of this clamping device can slide along the level and smooth limit of this setting element up to by till first end of this setting element.
Description of drawings
Fig. 1 is the vertical view of the lens driving apparatus of traditional camera.
Fig. 2 is the vertical view of first embodiment after appropriateness is simplified of the lens driving apparatus of camera of the present invention.
Fig. 3 is each combination of elements part drawing in the lens driving apparatus of Fig. 2.
Fig. 4 is the oblique side view of each element after assembling and appropriateness are simplified in the lens driving apparatus of Fig. 3.
Fig. 5 is the vertical view of second embodiment after appropriateness is simplified of the lens driving apparatus of camera of the present invention.
Symbol description
100,150 lens driving apparatus, 102,152 pedestals
103 stationary shaft, 118 push rods
104,154 focusing lens, 106,156 vertical circular holes
143,141,145 lower tooth portions of tooth portion on 146
110,160 driving rings, 114,164 interlock rings
116,166 transmission handles, 120,170 setting elements
111,115,123 tooth limits
112, two ends, 122, the 172 ratchet limits on 113 tooth limits
124,174 level and smooth limits, 125,175 chutes
126, first end of 176 setting elements
128, second end of 178 setting elements
130,180 clamping devices, 132,182 horizontal rotary arms
134,184 vertical rods, 136,186 flexible members
140,190 step motor
142,192 first transmission gears
144,194 second transmission gears, 117 camera lens traces
Embodiment
All the conventional art with shown in Figure 1 is identical for the shutter interlinked mechanism of camera lens drive unit of the present invention and the interlock mode of shutter close, therefore below no longer with diagram and character narrate repeat specification.Please refer to Fig. 2, Fig. 3 and Fig. 4.Fig. 2 is the vertical view of first embodiment after appropriateness is simplified of the lens driving apparatus 100 of camera of the present invention.Fig. 3 is each combination of elements part drawing in the lens driving apparatus 100 of Fig. 2.Fig. 4 is the oblique side view of each element after assembling and appropriateness are simplified in the lens driving apparatus 100 of Fig. 3.
As Fig. 2 and shown in Figure 3, lens driving apparatus 100 includes a pedestal 102, it includes a columniform vertical circular hole 106, one focusing lens 104 rotatably is installed in the circular hole 106, one interlock ring 114, one setting element 120 and a driving ring 110 are installed on the pedestal 102 in mode that can sideway swivel outside the circular hole of pedestal 102 in regular turn, one clamping device 130 is fixed on the pedestal 102, one flexible member 136 is fixed on the pedestal 102, one step motor 140 is fixed on the pedestal 102, and one first transmission gear 142 and one second transmission gear 144 are that the mode that fastens with the tooth limit with driving ring 110 and setting element 120 respectively is located on the pedestal 102.
Setting element 120 is to be a circular arc element, the side of its horizontal direction includes the outside that a ratchet limit 122 is positioned at setting element 120, the one level and smooth limit 124 with a chute 125 is positioned at the inboard of setting element 120, and one first end 126 and one second end 128 lay respectively between two end points on ratchet limit 122 and level and smooth limit 124.Downside on ratchet limit 122 has one section tooth limit 123 in addition, has a plurality of teeth on it, in order to as the transmission interface.In addition, clamping device 130 includes a horizontal rotary arm 132, and it is to be fixed in a movable manner on the pedestal 102, and one vertical rod 134 be fixed in the downside of horizontal rotary arm 132, horizontal rotary arm 132 and vertical rod 134 then can have elastic material such as the metal wire body is made in integrated mode with one.The stage casing coiled annular of metal wire body is socketed on the stationary shaft 103 on the pedestal 102, and the two ends of metal wire body are then extended by the annular in stage casing and formed " V " font; Wherein an end forms horizontal rotary arm 132 and vertical rod 134, and the other end then is resisted against the side of pedestal 102.Make an end of horizontal rotary arm 132 be fixed on the stationary shaft 103 thus and done the elasticity turn.
Flexible member 136 is to be connected with transmission handle 116 on the interlock ring 114, is used for flexibly fixing interlock ring 114 and and then drive the fixation of driving ring 110 and setting element 120.Driving ring 110 has one section tooth limit 111 that protrudes from ring edge, is used for fastening with the last tooth portion 143 of first transmission gear 142.Step motor 140 is lower tooth portion 141 drivings, first transmission gear, 142 rotations via first transmission gear 142.Because the diameter of the last tooth portion 143 of first transmission gear 142 is that the diameter than lower tooth portion 141 is little, so 142 pairs of driving rings 110 of first transmission gear have the function of dwindling with respect to the amount of spin that step motor 140 moves.Second transmission gear 144 is amplification gears that one and first transmission gear 142 turns upside down and is provided with, and its lower tooth portion 145 is that the tooth limit 115 with interlock ring 114 fastens, and tooth portion 146 is that tooth limit 123 with setting element 120 fastens on it.Include a camera lens trace 117 on the interlock ring 114 in addition, when step motor 140 drives 142 rotations of first transmission gear, the push rod 118 that the front end 112 on the tooth limit 111 of driving ring 110 promotes on the interlock ring 114, making interlock ring 114 order about second transmission gear 144 changes and advises and drive setting element 120, simultaneously, 117 of the camera lens traces on the interlock ring 114 can drive focusing lens 104 along circular hole 106 rotation declines.Therefore 132 tops that can flatly be displaced into setting element 120 of the horizontal rotary arm of clamping device 130 make the vertical rod 134 that is fixed in horizontal rotary arm 132 downsides be touched each side that setting element 120 is positioned at horizontal direction.Chute 125 on the level and smooth limit 124 of setting element 120 is to be used for the bottom of vertical rod 134 of ccontaining clamping device 130 in addition.When the vertical rod of clamping device 130 passes through second end 128 of setting element 120, the bottom of vertical rod 134 can be imported into the chute 125 on level and smooth limit 124, and the bottom that the chute 125 on level and smooth limit 124 then can be guided vertical rod 134 slides to first end 126 of setting element 120 along level and smooth limit 124.
As shown in Figure 4, when step motor 140 drives driving ring 110 towards forward rotation via first transmission gear 142, driving ring 110 can promote interlock ring 114 makes the camera lens trace 117 meeting drive focusing lens 104 on the interlock ring 114 descend along circular hole 106 rotations, and interlock ring 114 meetings simultaneously are promotion setting element 120 via second transmission gear 144.116 of transmission handles on the interlock ring 114 can be subjected to the elastic reaction of flexible member 136 and be subjected to an elastic force of pulling back being applied to it.This moment, the vertical rod 134 of clamping device 130 can be affixed to the ratchet limit 122 of setting element 120 by first end 126 of setting element 120 and 122 slips along the ratchet limit.
When step motor 140 continues to drive driving ring 110 towards forward rotation to a predeterminated position (this predeterminated position is the appropriate location of user institute desire focusing), 140 of step motor can stop to utilize interlock ring 114 to drive focusing lens 104 and descend, this moment, 134 of the vertical rods of clamping device 130 can fasten with the ratchet limit 122 of setting element 120, the elastic force effect that makes the position of setting element 120 be fixed and can not be subjected to flexible member 136 and produced and being pulled focuses on and the effect of location to reach.
Ratchet limit 122 is to have a plurality of ratchets, and each ratchet all can provide 104 1 of focusing lens to focus on the position location, with in response to different focal position demands.Because the number of ratchet and the hop count that focusing lens is focused are directly proportional, so utilize dwindling and amplification of first and second transmission gear 142 and 144, can make focusing lens 104 under restrictive conditions such as the commentaries on classics width of cloth of step motor and the camera lens finite space, obtain focusing position location, and then promote the focusing control performance of camera lens than multistage.
Finished the action of focusing and location when focusing lens 104 after, step motor 140 can counter-rotating.This moment, setting element 120 and interlock ring 114 still rested on the position location, had only driving ring 110 to be driven counter-rotating and removed to promote a shutter release (not shown) and finish photography and move with the other end 113 on tooth limit 111.
After the photography action is finished, step motor 140 is just recovering then is continuing to utilize interlock ring 114 to drive focusing lens 104 rotations to descend, the vertical rod 134 of last clamping device 130 can break away from the ratchet limit 122 of setting element 120, second end 128 by setting element 120 also is affixed to the level and smooth limit 124 of setting element 120, and this moment, the focusing detent mechanism (as: driving ring 110, setting element 120 and flexible member 136 etc.) of lens driving apparatus 100 reached its corresponding extreme position.Then flexible member 136 can make the camera lens trace 117 drive focusing lens 104 on the interlock ring 114 rise along circular hole 106 rotations by pulling interlock ring 114, and makes setting element 120 towards reverse rotation via the gearing of second transmission gear 144.When flexible member 136 pulling interlock rings 114 made setting element 120 reverse rotations, step motor 140 itself also needed reverse rotation, in order to avoid cause the resistance of setting element 120 reverse rotations.This moment, 134 of the vertical rods of clamping device 130 can slide along the chute on the level and smooth limit 124 of setting element 120 125, till getting back to its reference position by first end 126 of setting element 120.Similarly, the focusing detent mechanism of lens driving apparatus 100 (as: driving ring 110, setting element 120 and flexible member 136 etc.) also can be got back on its reference position.So promptly finished the program of the focusing location of camera lens drive unit 100.
Please refer to Fig. 5.Fig. 5 is the vertical view of second embodiment after appropriateness is simplified of the lens driving apparatus 150 of camera of the present invention.As first embodiment, lens driving apparatus 150 also includes a pedestal 152, and it includes a columniform vertical circular hole 156, one focusing lens 154 rotatably is fixed in the circular hole 156, one driving ring 160 is fixed on the pedestal 152 in mode that can sideway swivel outside the circular hole 156 of pedestal 152, one setting element, 170 articulatings are installed on the pedestal 152 in the periphery of this vertical circular hole 156, one flexible member 186 is fixed on the pedestal 152, one interlock ring 164 is fixed on the pedestal 152 in the mode that engages with driving ring 160, one clamping device 180 is located on the pedestal 152, one step motor 190 is fixed on the pedestal 152, and one first transmission gear 192 and one second transmission gear 194 are that the mode that fastens with the tooth limit with driving ring 160 and interlock ring 164 respectively is located on the pedestal 152.Wherein setting element 170 is the elements for an annular, one circular arc side of its horizontal direction includes the outside that a ratchet limit 172 is positioned at setting element 170, the one level and smooth limit 174 with a chute 175 is positioned at the inboard of setting element 170, and one first end 176 and one second end 178 lay respectively between two end points on ratchet limit 172 and level and smooth limit 174.In addition, clamping device 180 includes a horizontal rotary arm 182 one ends and is fixed on the pedestal 152, and one vertical rod 184 be fixed in the downside of horizontal rotary arm 182, horizontal rotary arm 182 and vertical rod 184 then can be made in integrated mode with a rubber-like material such as metal wire body.
Flexible member 186 is to be connected with transmission handle 166 on the interlock ring 164, is used for flexibly fixing interlock ring 164 and and then drive the fixation of driving ring 160 and clamping device 180.Step motor 190 is to be used for driving 192 rotations of first transmission gear to make setting element 170 rotate towards one first sense of rotation, and flexible member 186 is with the driving force that provides setting element 170 to rotate towards second sense of rotation opposite with this first sense of rotation.Include a camera lens trace (not showing among Fig. 5) on the interlock ring 164 in addition, when step motor 190 drives 192 rotations of first transmission gear, make second transmission gear 194 rotate via driving ring 160 and 164 gearings of interlock ring, simultaneously, the camera lens trace on the interlock ring 164 then can drive focusing lens 154 along circular hole 156 rotation declines.Therefore 182 tops that can flatly be displaced into setting element 170 of the horizontal rotary arm of clamping device 180 make that the vertical rod 18 that is fixed in horizontal rotary arm 182 downsides is touched each side that setting element 170 is positioned at horizontal direction.In addition, chute 175 on the level and smooth limit 174 of setting element 170, be to be used for the bottom of vertical rod 184 of ccontaining clamping device 180, when the vertical rod of clamping device 180 passes through second end 178 of setting element 170, the bottom of vertical rod 184 can be imported into the chute 175 on level and smooth limit 174, and the bottom that the chute 175 on level and smooth limit 174 then can be guided vertical rod 184 slides to first end 176 of setting element 170 along level and smooth limit 174.
When step motor 190 drives driving ring 160 when first sense of rotation is rotated via first transmission gear 192, driving ring 160 can promote interlock rings 164 and and then promote the camera lens trace on the interlock ring 164 and drive focusing lens 154 and descend along circular hole 156 rotations.166 of the transmission handles of interlock ring 164 can be subjected to the elastic reaction of flexible member 186 and be subjected to an elastic force of pulling back being applied to it.At this moment, 184 of vertical rods that are positioned at the clamping device 180 on the stacker 168 can be affixed to the ratchet limit 172 of setting element 170 and 172 slide along the ratchet limit by first end 176 of setting element 170.
When step motor 190 continuation drive driving rings 160 rotate up to a predeterminated position towards first sense of rotation (this predeterminated position is the appropriate location of user institute desire focusing), 190 of step motor can stop to utilize interlock ring 164 to drive focusing lens 154 and descend, at this moment, 184 of the vertical rods of clamping device 180 can fasten with the ratchet limit 172 of setting element 170, the elastic force effect that makes the position of clamping device 180 be fixed and can not be subjected to flexible member 186 and produced and being pulled focuses on and the effect of location to reach.
When step motor 190 continues to utilize moving of setting element 170 to drive focusing lens 154 rotation declines, the vertical rod 184 of clamping device 180 can break away from the ratchet limit 172 of setting element 170, second end 178 by setting element 170 also is affixed to the level and smooth limit 174 of setting element 170, and this moment, the focusing detent mechanism (as: driving ring 160, interlock ring 164, stacker 168 and flexible member 186 etc.) of lens driving apparatus 150 reached its corresponding extreme position.Then flexible member 186 can make that the vertical rod 184 of clamping device 180 can be along the chute 175 on the level and smooth limit 174 of setting element 170 towards reverse slide, till getting back to its reference position by first end 176 of setting element 170 by pulling setting element 170 via interlock ring 164.Camera lens trace on the interlock ring 164 also can drive focusing lens 154 along rotation rising in the circular hole 156 simultaneously, so, has promptly finished the program of the focusing location of camera lens drive unit 150.
Comparison diagram 4 can find with Fig. 5, and clamping device 130 and 170 is to fix setting element 120 and 170 with grab and the mode replaced respectively.Certainly, clamping device also can otherwise provide the strength that stops the setting element counter-rotating.Moreover, clamping device can also be arranged at the interlock ring in a movable manner or other can be along on the element of vertical circular hole outer rim rotation, the setting element of this moment is fixed, and clamping device is for movably, the proper operation principles opposite with the above embodiments, this also is modification and application on the claim of the present invention.In addition, Fig. 4 and step motor and flexible member shown in Figure 5 can be selected other suitable drive mechanism for use.
Fig. 2 to the ratchet limit of setting element shown in Figure 5 and the orientation of level and smooth limit or guide groove can exchange or be other configuration variation, as long as the sliding path can provide clamping device forward and reverse rotation respectively the time.Clamping device reaches the combination of slightly vertical clamping structure except the elastic arm of Fig. 2 slightly level extremely shown in Figure 5, the fixing element of also available other materials and shape replaces, but elasticity slides against the ratchet limit as long as its portion with the ratchet fixing is positioned at setting element when being rotated in the forward.The flexible member of Fig. 2 to Fig. 5 any driving element of the driving force of setting element reverse rotation that provides is provided replaces.
Compare with conventional art, the maximum difference of the lens driving apparatus 100,150 of camera of the present invention and the lens driving apparatus 10 of traditional camera is: the focusing detent mechanism of lens driving apparatus 100,150 of the present invention does not only need to install additional any electronic equipment and gear set with the clamping device 130,180 of a simplicity of design as setting element, not only increase the usage space in the camera lens drive unit thus, also therefore reduced the cost of manufacture of camera integral body.
The above only is the preferred embodiments of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.

Claims (12)

1. camera lens, it includes:
One pedestal, it includes a columniform vertical circular hole;
One focusing lens is installed in this circular hole, and can axially moving towards a first direction or a second direction along this circular hole central shaft;
One setting element, be fixed on this pedestal in the mode that can move horizontally, be used for making this focusing lens to be able in this circular hole, be positioned, and the side of this setting element horizontal direction includes a ratchet limit, one level and smooth limit, one first end and one second end lay respectively between two end points on this ratchet limit and level and smooth limit; And
One clamping device, it includes a horizontal rotary arm and is fixed in a movable manner on this pedestal, and one vertical rod be fixed in the downside of this horizontal rotary arm, this horizontal rotary arm can move horizontally in the top of this setting element and therefore make the vertical rod that is fixed in its downside be touched each side that this setting element is positioned at horizontal direction;
Wherein when this focusing lens by drive and when this first direction moves, the vertical rod of this clamping device can be affixed to the ratchet limit of this setting element by first end of this setting element and slide along this ratchet limit and stop when mobile and this ratchet limit fastens the position of this setting element is fixed in this focusing lens, when this focusing lens when this second direction moves, the vertical rod of this clamping device can slide along the level and smooth limit of this setting element up to by till first end of this setting element.
2. camera lens as claimed in claim 1, wherein the horizontal rotary arm of this clamping device and vertical rod are to make in integrated mode with a rubber-like metal wire body.
3. camera lens as claimed in claim 1, it includes in addition:
One flexible member is fixed on this pedestal, is used for flexibly fixing this setting element;
One step motor is fixed on this pedestal, is used for promoting this setting element; Wherein, this step motor make this focusing lens and when this first direction moves by drive when promoting this setting element, the vertical rod of this clamping device can be affixed to the ratchet limit of this setting element by first end of this setting element and slide along this ratchet limit, when stopping to promote this setting element, this step motor make this focusing lens stop when mobile, the vertical rod of this clamping device can be fixed and can not spurred by this flexible member with the position that makes this setting element that fastens, this ratchet limit, when this step motor continue promote this setting element make this focusing lens be driven when this first direction move thereafter, the vertical rod of this clamping device can break away from the ratchet limit of this setting element, second end by this setting element also is affixed to the level and smooth limit of this setting element, thereafter this flexible member can spur this setting element and makes this focus lamp sector-meeting be moved towards this second direction by drive, and the vertical rod of this clamping device then can slide along the level and smooth limit of this setting element up to by till first end of this setting element.
4. camera lens as claimed in claim 3, it includes a driving ring and an interlock ring in addition, is fixed in a movable manner on this pedestal, and this step motor then is to utilize this driving ring and this interlock ring to drive this setting element.
5. camera lens as claimed in claim 4, wherein this driving ring and this interlock ring are to be fixed on this pedestal in mode that can sideway swivel outside the circular hole of this pedestal.
6. camera lens as claimed in claim 1, wherein this setting element is to be a circular arc element, respectively there is a circular arc limit its inside and outside both sides, and the ratchet limit of this setting element and level and smooth limit are to be located on the circular arc limit of its inside and outside both sides.
7. camera lens as claimed in claim 6, wherein this setting element is being fixed on this pedestal around the mode of this circular hole rotation.
8. camera lens as claimed in claim 1, wherein the level and smooth limit of this setting element is provided with a chute, be used for the bottom of vertical rod of ccontaining this clamping device, when the vertical rod of this clamping device passes through second end of this setting element, the bottom of this vertical rod can be imported into the chute on this level and smooth limit, and the bottom that the chute on this level and smooth limit then can be guided this vertical rod slides to first end of this setting element along this level and smooth limit.
9. a lens locator is used for locating a focusing lens, and it includes:
One pedestal, it includes a columniform vertical circular hole; Be used for ccontaining this focusing lens;
One setting element, articulating is in the periphery of this vertical circular hole, and it is rotatable to control the position of this focusing lens in this vertical circular hole, and this setting element includes a ratchet limit, one level and smooth limit, one first end and one second end lay respectively between two end points on this ratchet limit and level and smooth limit;
One first drive unit is used for driving this setting element and rotates towards one first sense of rotation;
One second drive unit is used to provide the driving force that this setting element rotates towards one second sense of rotation, and wherein this second direction is opposite with this first direction;
One clamping device, it includes a horizontal rotary arm, the one end is to be fixed on this pedestal, an and vertical rod, it is connected in the other end of this horizontal rotary arm, this horizontal rotary arm can move horizontally in the top of this setting element and therefore make the vertical rod that is fixed in its downside be touched each side that this setting element is positioned at horizontal direction, when this setting element is used for closing with this ratchet checkpost when this first sense of rotation turns to an ad-hoc location, to stop this second drive unit that this setting element is rotated towards this second sense of rotation, and reach the location this focusing lens function, when this focusing lens when this second direction moves, the vertical rod of this clamping device can slide along the level and smooth limit of this setting element up to by till first end of this setting element.
10. lens locator as claimed in claim 9, wherein this ratchet limit is for a circular arc limit, has a plurality of ratchets on it, to provide this focusing lens a plurality of position locations.
11. lens locator as claimed in claim 9, when wherein this setting element is towards this first sense of rotation rotation, this fixing (device) be along this ratchet limit from this first end to this second end Elastic Sliding, and stop during the position sliding with regard to a location and fix this ratchet limit in this camera lens.
12. lens locator as claimed in claim 9, wherein this second drive unit is a flexible member.
CN02121367.4A 2002-06-17 2002-06-17 Positioning device for camera lens and its focusing device Expired - Fee Related CN1246735C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN02121367.4A CN1246735C (en) 2002-06-17 2002-06-17 Positioning device for camera lens and its focusing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN02121367.4A CN1246735C (en) 2002-06-17 2002-06-17 Positioning device for camera lens and its focusing device

Publications (2)

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CN1464334A CN1464334A (en) 2003-12-31
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CN100543575C (en) * 2005-07-29 2009-09-23 鸿富锦精密工业(深圳)有限公司 Autofocus lens
TWI441513B (en) 2011-02-16 2014-06-11 Image sensing mechanism
CN102647547B (en) * 2011-02-17 2014-12-31 佳能企业股份有限公司 Image sensing mechanism and image capture device

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