CN2565044Y - Shading device for optical passometering sensor - Google Patents
Shading device for optical passometering sensor Download PDFInfo
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- CN2565044Y CN2565044Y CN 02243215 CN02243215U CN2565044Y CN 2565044 Y CN2565044 Y CN 2565044Y CN 02243215 CN02243215 CN 02243215 CN 02243215 U CN02243215 U CN 02243215U CN 2565044 Y CN2565044 Y CN 2565044Y
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- counting sensor
- lightproof
- optical
- optical step
- sensing
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Abstract
The utility model relates to a lightproof device for an optical step counting sensor. The utility model is mainly composed of a position fixing frame groove assembled at the back end of a zoom lens barrel, an optical step counting sensor, a main lightproof blocking component, an accessory lightproof blocking component and a linkage gear set, wherein, the position fixing frame groove can be inside assembled and positioned with the optical step counting sensor, the main lightproof blocking component, the accessory lightproof blocking component and the linkage gear set, and the middle of the optical step counting sensor is provided with an air transmission sensing region making light ray corresponding sensing so that sensing light shading or light transmission is used as the control of the driving step counting travel range of the zoom lens barrel. Thus, the linkage relationship of a guiding component of an initial point of a zoom lens and the main lightproof blocking component is utilized, the judgment and the reading of the initial step counting of the optical step counting sensor can be controlled, the linkage relationship is matched with the intermittent lightproof control of the accessory lightproof blocking component which is synchronously rotated by the linkage gear set and the optical step counting sensor, and is matched with the speed reducing transmission of the linkage gear set and a driving tooth of the zoom lens barrel, the automatic zoom step counting travel range of the zoom lens barrel can be controlled, and the step-out control of the optical step counting sensor is achieved.
Description
Technical field
The utility model relates to a kind of optical step-counting sensor shade, especially refer to a kind ofly can make the initial initial point detecting and the shade of meter step sensing control again to its optical step-counting sensor, and then reach the out-of-step free autozoom control of camera at camera automatic zooming.
Background technology
The action of general camera zoom comprises and raises stroke and zoom stroke.Wherein raise stroke and be meant that but camera starts rear lens and extend out to the stroke of camera site from reception position: the then action of conversion focal length when taking of zoom stroke.As if no suitable position detecting, will make camera lens location misalignment and influence the photography quality.
In addition, common mechanical location sensitive mechanism and optical profile type meter step two kinds in the mechanism that divides into of zoom lens meter walking process control.
Figure 1 shows that mechanical location sensitive mechanism, its utilize plate on the zoom lens outer peripheral edges one deck Copper Foil 1 ', this Copper Foil 1 ' go up and several grid block that is shaped is done separating of location sensitive, the multijaw contact flat spring 2 ' with Copper Foil 1 ' go up grid block of arranging in pairs or groups again contact with the formation location sensing to be controlled, but the mechanical sensor designs mode of this kind, though can detect the position that raises stroke and zoom stroke, do initial initial point detecting and the control of stroke sensing, but can't reflect the motor step-out immediately, and contact flat spring 2 ' claw make need possess keep on certain elasticity processing procedure quite difficult, and the technical height of demand, so cost of manufacture is quite expensive, life-span and fiduciary level are not good, are difficult for a large amount of popularizing and adopt, and only are suitable on a spot of high-order product.
And for example Figure 2 shows that meter step mechanism of optical profile type, its be utilize an optical step-counting sensor 3 ' with corresponding space in the middle of it be provided with a grating 4 ' constituted.Optical step-counting sensor 3 ' a contain infrared and a receiving trap wherein, and can export specific voltage signal according to the infra-red intensity that receiving trap is sensed, output voltage is 100% of an input terminal voltage when infrared ray is received fully, is 0% when covering fully.So utilize its grating 4 ' on possess have in response to camera lens meter step value the array hole that separates out of correspondence, when rotating, grating 4 ' does the control of shading or printing opacity with this hole, and convert autozoom meter walking journey to through the interpretation of output voltage height, though shading meter step mode like this can reach the control of autozoom meter step, but it has grating 4 ' cost of manufacture height, and when going on foot control, meter can't really pick out initial initial point, thereby make the camera lens location may be subjected to rigging error or raise the influence that journey error is accumulated, so the situation that can cause camera lens zoom location to have misalignment takes place, so its applicability haves much room for improvement.
Summary of the invention
In view of this, the utility model designer is based on the autozoom meter walking formula of camera control system demand, concentrates on studies and innovates a kind of optical step-counting sensor shade, is provided with demand utilization on the industry.
Fundamental purpose of the present utility model, promptly be to provide a kind of optical step-counting sensor shade, it utilizes the guide member of the initial initial point of zoom lens and the continuous action relation of main shading block piece, and set the judgement position standard of two sections output voltages, it is the interpretation that may command optical step-counting sensor is made the zoom starting point, make and raise the unlikely zoom stroke that influences of journey error, other cooperates the attached lightproof stop member attached lightproof stop member and the shading at intermittence of optical step-counting sensor do that rotated synchronously by the linked gear group to control, and cooperate linked gear group and zoom lens barrel driving gear to do with gearing-down, it is the meter walking journey of may command varifocal mirror tube autozoom, the so meter of optical step-counting sensor step control, interpretation and the control of autozoom meter walking formula with starting point, to reach the out-of-step free control of optical step-counting sensor, and the entire mechanism design quite is simple and easy to implement, and then can reach the benefit that meets low-cost manufacturing.
For achieving the above object, the utility model provides a kind of optical step-counting sensor shade, mainly be to be provided with positioning frame trough, optical step-counting sensor, main shading block piece, attached lightproof stop member and linked gear group in varifocal mirror tube rear end group to constitute, can assemble location optical step-counting sensor, main shading block piece, attached lightproof stop member and linked gear group in this positioning frame trough, and be provided with the sensing area that sky can be made the corresponding sensing of light in the middle of this optical step-counting sensor, be provided with responding to shading or printing opacity and drive the control of meter walking journey as the zoom lens barrel, wherein:
This zoom lens barrel is provided with a guide member in initial initial point place, is provided with controlling the displacement of shading block piece, and is provided with a circle driving gear in periphery, rotates for doing to mesh to slow down with the linked gear group, to carry out autozoom control;
This main shading block piece includes a shadow shield and a link driving element, wherein shadow shield is arranged in the above-mentioned sensing area, and be provided with an optical transmission window on it in addition, and this link driving element and shadow shield link one, and may command shadow shield moving displacement is to the complete hidden position of the sensing area of optical step-counting sensor when touched by guide member for it;
This one step of optical step-counting sensor collocation is judged the control loop that the position is accurate and an initial point is judged, after the guide member of zoom lens barrel touches link driving element, shadow shield is moved in the time of the sensing area of optical step-counting sensor being covered fully, detected output signal and reached initial point judgement position standard, and link driving element can continue to be promoted, make the optical transmission window of shadow shield be moved to the position that this sensing area reaches the printing opacity opening fully, can utilize attached lightproof stop member to make meter step sensing, and this optical step-counting sensor still can utilize attached lightproof stop member to make meter step sensing in the front and back of the complete hidden position of sensing area;
The rigging position of this attached lightproof stop member can only cover a sensing area part, for make meter step output voltage during sensing can be distributed in the meter step judge the position accurate about, and make output voltage not have reaching or be lower than the effect that initial point judges that the position is accurate.
Description of drawings
Figure 1 shows that known a kind of mechanical type location sensitive mechanism associated components synoptic diagram.
Figure 2 shows that meter step mechanism's associated components synoptic diagram of known another kind of optical profile type.
Figure 3 shows that meter step mechanism's associated components synoptic diagram of the utility model optical profile type.
Figure 4 shows that main shading block piece of the utility model and optical step-counting sensor assembly corresponding relation synoptic diagram.
Figure 5 shows that the enforcement illustration when main shading block piece of the utility model and optical step-counting sensor carry out block resistance shading state.
Figure 6 shows that the main shading block piece of the utility model back side look synoptic diagram.
Figure 7 shows that the projection and main shading block piece retaining group corresponding relation synoptic diagram of the utility model positioning frame trough.
Figure 8 shows that main shading baffle plate of the utility model and the assembly of attached lightproof stop member in optical step-counting sensor sensing area concern synoptic diagram.
Figure 9 shows that the utility model attached lightproof stop member makes the enforcement illustration of meter walking process control in optical step-counting sensor sensing area.
Embodiment
According to taking off technological means, feature structure and the practical effect that is adopted at the bottom of the order on the utility model, cooperate now that specific embodiment is graphic to be described as follows in detail:
See also Fig. 3 to shown in Figure 9, the structure-improved of the utility model optical step-counting sensor shading mainly is to be provided with positioning frame trough 2 in zoom lens barrel 1 rear end group, optical step-counting sensor 3, main shading block piece 4, attached lightproof stop member 5 and linked gear group 6 constitute, wherein can assemble location optical step-counting sensor 3 in this positioning frame trough 2, main shading block piece 4, attached lightproof stop member 5 and linked gear group 6, and be provided with the sensing area 31 that sky can be made the corresponding sensing of light in the middle of this optical step-counting sensor 3, be provided with responding to shading or printing opacity and drive the control of counting the walking journey as zoom lens barrel 1.
And as Fig. 4 and shown in Figure 5, this main shading block piece 4 is to include a shadow shield 41 and a link driving element 42, be provided with detecting and control optical step-counting sensor 3 interpretation in initial meters step as the initial initial point of zoom lens barrel 1, wherein shadow shield 41 is arranged in the sensing area 31 of optical step-counting sensor 3, end is provided with an optical transmission window 411 in face of its plate, and in shadow shield 41 1 side button pivot link driving element 42, make shadow shield 41 and link driving element 42 have the effect of interlock, and this link driving element 42 bottoms system is hubbed on the hinged arm 21 of positioning frame trough 2, makes link driving element 42 be positioned can do a pivot pendular motion in the positioning frame trough 2.
The initial initial point place of this zoom lens barrel 1 is provided with a guide member 11 that is trapezoidal form, and the trapezoidal wedge surface in the top of its guide member 11 can be conflicted with link driving element 42 bottoms, does with a transversal displacement in the sensing area 31 of optical step-counting sensor 3 with control shadow shield 41.
Therefore as shown in Figure 5, when zoom lens barrel 1 turns to default initial point place, the guide member 11 of this initial initial point link driving element 42 bottoms of conflicting, make the link driving element 42 that is pivoted make to go up the sensing area 31 interior transversal displacements of top guiding interlock shadow shield 41 towards optical step-counting sensor 3, allow shadow shield 41 move to the position that the sensing area 31 of optical step-counting sensor 3 can be covered fully, can assert the initial initial point interpretation of zoom lens barrel 1 to make optical step-counting sensor 3, and link driving element 42 can continue to be promoted, make the optical transmission window 411 of shadow shield 31 be moved to the position that this sensing area 31 reaches the printing opacity opening fully, that is optical transmission window 411 moves to the center of bit in sensing area 31, continues to do the control in 1 follow-up meter step of zoom lens barrel so sensing area 31 corresponding light sensings can penetrate optical transmission window 411.
In addition, link driving element 42 tops one side above-mentioned as Figure 6 and Figure 7 is provided with a salient point 421, this salient point 421 can with the projection 22 corresponding conflicts of positioning frame trough 2, therefore being led projection 11 when link driving element 42 bottoms guides when contacting, its salient point 421 promptly is subjected to interlock and is positioned projection 22 1 sides (as shown in Figure 7) of positioning frame trough 2, when these link driving element 42 bottoms are not contacted again, after its salient point 421 is the start location, just be unlikely to get back to original positioning states, make shadow shield 31 continue location in sensing area 31, contact link driving element 42 bottoms again unless zoom lens barrel 1 returns to initial initial point again and do displacement, the transversal displacement of the shadow shield 41 that begins to change again.
Hence one can see that, the continuous action relation of leading projection 11 and shading block piece 4 of above-mentioned this zoom lens barrel 1 initial initial point, the i.e. interpretation in 3 initial meters steps of may command optical step-counting sensor.And how the autozoom meter walking journey of optical step-counting sensor 3 will be controlled, and below explains with regard to the specific embodiment of the meter walking process control of optical step-counting sensor 3.
The grating that the utility model adopts the simple and cheap attached lightproof stop member 5 of a making to substitute known cost of manufacture costliness is done the 2 intermittently shadings of optical step-counting sensor, in the walking journey mode of control zoom lens barrel 1 autozoom.
With this case embodiment is example, this attached lightproof stop member 5 is a gear that is meshed with linked gear group 6, and be hubbed on the hinged arm 21 of positioning frame trough 2, and set is in the sensing area 31 of optical step-counting sensor 3, keep the certain intervals distance state with shadow shield 41, make optical step-counting sensor 3 can respond to the action (as shown in Figure 8) of attached lightproof stop member 5 fully.
Because the rigging position of attached lightproof stop member 5 only can cover 2/3 of sensing area 31, so during attached lightproof stop member 5 rotations, its between cog and tooth portion make voltage that optical step-counting sensor 3 exports between 100% to 30% fluctuation.Before main shading block piece 4 did not move as yet, sensing area 31 is the rotation of sensing attached lightproof stop member 5 fully.
And main shading block piece 4 is conflicted when mobile, its shadow shield 41 covers earlier inductor 31 fully, make output voltage reduce to 0, when then optical transmission window 411 transversal displacements of shadow shield 41 are to sensing area 31 centers, the number of teeth of this attached lightproof stop member 5 can corresponding optical transmission window 411, so the throw light of sensing area 31 can be projeced on the number of teeth of attached lightproof stop member 5 again, to become the walking formula control (as shown in Figure 9) that zoom lens barrel 1 drives a unit.
This optical step-counting sensor one step of 3 collocation is judged the control loop that the position is accurate and an initial point is judged, therefore as long as in optical step-counting sensor 3 control formulas, set the interpretation position standard of 60% and 10% liang of output voltage, can judge the running step number that raises stroke when recording voltage between time about in the of 60%, when voltage is lower than 10%, arrive initial point.When voltage returns back to the 10% meter step control that restarts to do the zoom stroke when above again, like this then raise the unlikely calculating that influences the zoom stroke of error of stroke.
As shown in Figure 3, the utility model utilizes this attached lightproof stop member 5 and linked gear group 6 to do to drive to slow down, and this linked gear group 6 is hubbed at first driven tooth 62 on positioning frame trough 2 each hinged arm 21 with driving tooth 61 collocation, second driven tooth 63, the 3rd driven tooth 64, the 4th driven tooth 65, idle pulley 66 formation that is meshing with each other, wherein driving tooth 61 is driven by a CD-ROM drive motor, and driving gear 61 directly drives meter step gear 5, first driven tooth 62 then is pivoted on meter step gear 5 coaxial, and first driven tooth 62, second driven tooth 63, the 3rd driven tooth 64, the 4th driven tooth 65,66 rotations that are meshing with each other in regular turn of Sui's wheel, last idle pulley 66 meshes with the driving gear 12 of zoom lens barrel 1, so the rotating ratio with attached lightproof stop member 5 and zoom lens barrel 1 driving gear 12 is designed to 80: 1, therefore the sensing area 31 of this optical step-counting sensor 3 is whenever sensed attached lightproof stop member 5 one teeth every the number rotation, then zoom lens barrel 1 is rotated 0.0125 degree, so driving the number of turns of attached lightproof stop member 5, CD-ROM drive motor can do intermittently shading, in the walking journey of control zoom lens barrel 1 autozoom to optical step-counting sensor 3.
Learn by above-mentioned explanation, the utility model utilizes the guide member 11 of zoom lens 1 initial initial point and the continuous action relation of main shading block piece 4, the interpretation in 3 initial meter steps of may command optical step-counting sensor, and the attached lightproof stop members 5 that cooperation is rotated by linked gear group 6 are synchronously controlled with the 3 do shadings at intermittence of optical step-counting sensor, cooperate the moving tooth 12 of linked gear group 6 and zoom lens barrel 1 body to do again with gearing-down, may command zoom lens barrel autozoom meter walking journey, the so meter of optical step-counting sensor 3 step control, interpretation and autozoom meter walking process control with initial meter step, to reach the 3 out-of-step free controls of optical step-counting sensor, and the entire mechanism design quite is simple and easy to implement, and then can reach the benefit that meets low-cost manufacturing.
The disclosed graphic explanation of above-mentioned the utility model; only be embodiment of the present utility model; generally those skilled in the art, its equivalence done according to the utility model spirit category change or modify, all should be encompassed within the claim protection domain of following this case.
In sum, the utility model provides the structure-improved of optical step-counting sensor shading, can reach the step-out problem that expection solves optical profile type meter step mechanism really, and can reduce the progressive effect of meter step mechanism's manufacturing cost, can utilize on the industry, has progressive.
Claims (3)
1, a kind of optical step-counting sensor shade, mainly be to be provided with positioning frame trough, optical step-counting sensor, main shading block piece, attached lightproof stop member and linked gear group in varifocal mirror tube rear end group to constitute, can assemble location optical step-counting sensor, main shading block piece, attached lightproof stop member and linked gear group in this positioning frame trough, and be provided with the sensing area that sky can be made the corresponding sensing of light in the middle of this optical step-counting sensor, be provided with responding to shading or printing opacity as the control of zoom lens barrel driving meter walking journey, it is characterized in that:
This zoom lens barrel is provided with a guide member in initial initial point place, is provided with controlling the displacement of shading block piece, and is provided with a circle driving gear in periphery, rotates for doing to mesh to slow down with the linked gear group, to carry out autozoom control;
This main shading block piece includes a shadow shield and a link driving element, wherein shadow shield is arranged in the above-mentioned sensing area, and be provided with an optical transmission window on it in addition, and this link driving element and shadow shield link one, and may command shadow shield moving displacement is to the complete hidden position of the sensing area of optical step-counting sensor when touched by guide member for it;
This one step of optical step-counting sensor collocation is judged the control loop that the position is accurate and an initial point is judged, after the guide member of zoom lens barrel touches link driving element, shadow shield is moved in the time of the sensing area of optical step-counting sensor being covered fully, detected output signal and reached initial point judgement position standard, and link driving element can continue to be promoted, make the optical transmission window of shadow shield be moved to the position that this sensing area reaches the printing opacity opening fully, can utilize attached lightproof stop member to make meter step sensing, and this optical step-counting sensor still can utilize attached lightproof stop member to make meter step sensing in the front and back of the complete hidden position of sensing area;
The rigging position of this attached lightproof stop member can only cover a sensing area part, for make meter step output voltage during sensing can be distributed in the meter step judge the position accurate about, and make output voltage not have reaching or be lower than the effect that initial point judges that the position is accurate.
2, optical step-counting sensor shade as claimed in claim 1, it is characterized in that: one side, driving lever top of shading block piece is provided with a salient point, this salient point must corresponding conflict with the projection of positioning frame trough, thereby when shape piece one side is contacted, its salient point promptly is subjected to interlock and positioning states that projection one side that is positioned positioning frame trough is kept driving lever to be contacted, and shadow shield also continues to remain in the sensing area to locate relatively.
3, a kind of optical step-counting sensor shade, mainly be to be provided with positioning frame trough, optical step-counting sensor, main shading block piece, attached lightproof stop member and linked gear group in varifocal mirror tube rear end group to constitute, can assemble location optical step-counting sensor, main shading block piece, attached lightproof stop member and linked gear group in this positioning frame trough, and be provided with the sensing area that sky can be made the corresponding sensing of light in the middle of this optical step-counting sensor, be provided with shading or printing opacity and drive the control of counting the walking journey, it is characterized in that as the zoom lens barrel:
This attached lightproof stop member is a gear that is meshed with the linked gear group, and be hubbed at the hinged arm of positioning frame trough, and set is in optical step-counting sensor sensing area, to make its tooth portion can be corresponding to the optical transmission window of shadow shield, thereby when sensing area energy printing opacity sensing, one tooth that can utilize this gear is provided with driving as the zoom lens barrel meter walking process control of a unit every counting rotation and making sensing area do the shading sensing control of printing opacity again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02243215 CN2565044Y (en) | 2002-07-19 | 2002-07-19 | Shading device for optical passometering sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02243215 CN2565044Y (en) | 2002-07-19 | 2002-07-19 | Shading device for optical passometering sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2565044Y true CN2565044Y (en) | 2003-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02243215 Expired - Fee Related CN2565044Y (en) | 2002-07-19 | 2002-07-19 | Shading device for optical passometering sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2565044Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654632A (en) * | 2011-03-01 | 2012-09-05 | 华晶科技股份有限公司 | Automatic focusing lens module and calibration method thereof |
| CN113960856A (en) * | 2021-12-23 | 2022-01-21 | 广州成至智能机器科技有限公司 | Optical axis adjusting device, optical equipment, shooting device and unmanned aerial vehicle |
-
2002
- 2002-07-19 CN CN 02243215 patent/CN2565044Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654632A (en) * | 2011-03-01 | 2012-09-05 | 华晶科技股份有限公司 | Automatic focusing lens module and calibration method thereof |
| CN113960856A (en) * | 2021-12-23 | 2022-01-21 | 广州成至智能机器科技有限公司 | Optical axis adjusting device, optical equipment, shooting device and unmanned aerial vehicle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |