CN2380933Y - Lens-improved multi-film type diaphragm - Google Patents
Lens-improved multi-film type diaphragm Download PDFInfo
- Publication number
- CN2380933Y CN2380933Y CN 99214406 CN99214406U CN2380933Y CN 2380933 Y CN2380933 Y CN 2380933Y CN 99214406 CN99214406 CN 99214406 CN 99214406 U CN99214406 U CN 99214406U CN 2380933 Y CN2380933 Y CN 2380933Y
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- blade
- ring
- lens
- camera lens
- aperture
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Abstract
The utility model relates to an improved multi-piece type diaphragm for a lens, which comprises the lens, a plurality of blades, an annular ring and a driving device of the annular ring, wherein, the annular ring is used for driving a plurality of pieces of blades to move in a slot arranged on a lens barrel of the lens so that the size of an opening of the diaphragm is changed, and in addition, the opening of the diaphragm is formed by the surrounding of each blade. The change of a plurality of diaphragms can be made, and in addition, because the lens barrel of the lens only needs to be provided with a plurality of slots into which a plurality of pieces of blades are respectively inserted, the lens barrel does not need to be divided into a front and a back sections in order to be provided with a swing type diaphragm mechanism with complicated structure, structure can be simplified, the difficulty of the assembly of the lens is reduced and the cost of the manufacture of the lens is reduced.
Description
The utility model relates to a kind of improved multiple-piece aperture of camera lens, refers to a kind of variation of making multiple aperture especially, and simple structure, easy assembling and improved cheaply multiple-piece aperture.
The aperture of general camera lens can be located in the forward and backward and camera lens of camera lens, wherein to be located at the most common in the camera lens.Monolithic extraction-type aperture for example shown in Figure 1, it is to drive slotted eye 102 on the lens barrel of the blade 200 turnover camera lenses 100 offer big small sircle hole 202 with driving lever, magnetic motor or motor (not shown), makes big small sircle hole 202 aim at optical axises respectively and does the switching of aperture.Though the structure of this monolithic extraction-type aperture is simple, can only make the two-part aperture and switch, can't adapt to different capture demands and do the variation of multiple aperture.
Can make aperture that multiple aperture changes and be two-piece type aperture as shown in Figure 2, but to be the blade 210 of and slide in opposition recessed with two front ends form the opening that varies in size for it.Change though this two-piece type aperture can be made multiple aperture, its opening be shaped as rectangle but not sub-circular, the light income of picture uniform plane can't be provided.
Another aperture that can make the shape approximation circle of multiple aperture variation and its aperture is an iris diaphragm (Iris Diaphragm) as shown in Figure 3-Figure 5, Fig. 3 shows that the rotation of the hoop 212 of iris diaphragm and an end are provided with bearing pin 217, the other end is slidedly arranged on the blade 214 of groove 213 on the rotation of the hoop 212 with projection 218, wherein track T is a rotation of the hoop 212 when rotating, projection 218 because of blade 214 swings the track of process.Bearing pin 217 is to be hubbed on the fixedly ring 216 shown in Figure 4, multi-disc blade 214 overlapped openings 220 that promptly form similar circle wherein, and when rotation of the hoop 212 rotates with respect to fixing ring 216, can continuously change the size of opening 220, Fig. 5 shows that iris diaphragm (Iris Diaphragm) is installed in the cut-open view of 114 on pre-group eyeglasses 112 and back group's eyeglass in the camera lens 110, wherein drive runner 219 and be connected in rotation of the hoop 212, in order to drive rotation of the hoop 212.
Though can making multiple aperture to iris diaphragm shown in Figure 5, Fig. 3 changes, but its complex structure, and general camera lens is divided into lens barrel the leading portion that comprises pre-group eyeglass 112 usually and comprises the back segment of group's eyeglass 114 afterwards, to make things convenient for the installation of this iris diaphragm, the camera lens that is divided into two sections must be quite accurate on making, and just can guarantee the aligning of pre-group eyeglass 112 and back group's eyeglass 114 optical axises.Therefore, also has the shortcoming that assembling is difficult for, manufacturing cost is high.
The purpose of this utility model provides a kind of improved multiple-piece aperture of making the camera lens of multiple aperture variation.
Another purpose of the utility model provides the improvement multiple-piece aperture of a kind of iris shape near circular camera lens.
A purpose more of the present utility model provides a kind of simple structure, assembling reaches the improved multiple-piece aperture of camera lens cheaply easily.
The utility model is achieved in that it comprises: camera lens, form by lens barrel and the eyeglass that is installed in this lens barrel, this lens barrel along around be formed with a plurality of slotted eyes; A plurality of blades are en plaque, movably are installed in the slotted eye of this lens barrel, and its front end is formed with in order to constitute the breach of aperture openings; Ring is set in this camera lens periphery rotationally, and is connected with each blade in the mode that can drive the blade action; And looped drive device, be located near this ring, in order to drive the amount of spin that ring rotated and controlled this ring, it is that the front end that utilizes each blade is overlapping and form this aperture openings by this breach in this lens barrel, and utilizing this looped drive device to drive this ring rotates, each blade is moved in this slotted eye of this lens barrel, can change the size of this aperture openings.
Wherein this blade rear end is formed with guide groove, and this ring has a plurality of projections of this guide groove that stretches into each this blade respectively, and this ring is to drive this blade straight line with this projection that slides on this guide groove to pass in and out this slotted eye.
Wherein this slotted eye forms fan-shapedly, and this blade rear end is formed with pin shaft hole, and this ring has a plurality of projections of this pin shaft hole that stretches into each this blade respectively, and this ring drives this blade with this projection and swings in this slotted eye.
Wherein this slotted eye is transversal section with respect to this lens barrel angle that tilts.
This looped drive device gear part of comprising motor and being installed in this motor output shaft wherein, this gear part is to be connected mutually with the tab-like gear part that is formed in this ring outer rim, rotates to drive this ring.
Wherein this gear part and this gear are fan-shaped.
Wherein these a plurality of slotted eyes are uniformly-spaced to be opened in around this lens barrel.
Wherein this breach is to form the parabola shaped of indented central at this blade front-end edge.
Wherein this breach is to form radian at a lateral margin of this blade front end to become big arc from front to back gradually.
Ring of the present utility model is to be connected with this blade in the mode that can drive this blade, for example: form guide groove in this blade rear end, this ring then has a plurality of projections of this guide groove that stretches into each this blade respectively, and drives this blade straight line with this projection that slides on this guide groove and pass in and out this slotted eye; Perhaps, it is peripheral inwardly gradually wide fan-shaped that this slotted eye is formed by this lens barrel, forms pin shaft hole in this blade rear end, and this ring then has a plurality of projections of this pin shaft hole that stretches into each this blade respectively, and drive this blade with this projection and swing in this slotted eye etc.
The gear part that this looped drive device comprises motor and is installed in this motor output shaft.So, just can use by motor and be installed in the looped drive device that the gear part of this motor output shaft is formed, this gear part is to be connected mutually with the tab-like gear part that is formed in this ring outer rim, drives that this ring rotates and the size that changes this opening.
In addition, formed, so its shape is easier to the convergence circle, and the blade that uses is many more, perhaps suitably designs the shape of this breach, for example: parabola shaped at this blade front-end edge formation indented central because this opening is this breach by the multi-disc blade; Or form radian at a lateral margin of this blade front end and become big arc etc. from front to back gradually, all can make the shape of this opening good more near circular effect.
Moreover, owing to improved multiple-piece aperture according to camera lens of the present utility model, the simple structure of its element, the lens barrel of camera lens only need be offered a plurality of slotted eyes, blade can be inserted respectively, then ring is set in this lens barrel periphery, and is connected with this blade.Therefore,, do not have the problem of optical axis alignment, need not accurate manufacturing and assembling, so can reach easy assembling, the purpose that reduces cost without segmentation.
Below in conjunction with accompanying drawing, describe structure of the present utility model and feature in detail:
Fig. 1 is the stereographic map of the present camera lens with monolithic extraction-type aperture that uses;
Fig. 2 is the floor map of blade slide in opposition in the two-piece type aperture that uses now;
Fig. 3 is rotation of the hoop and the structure of blade and the floor map of operating principle in the iris diaphragm that uses now;
Fig. 4 is a fixing ring and form the plan view of the blade of circular open in the iris diaphragm that uses now;
Fig. 5 is that the iris diaphragm of use now is installed in the cross section view in the camera lens;
Fig. 6 is the stereographic map of preferred embodiment of the improved multiple-piece aperture of the utility model camera lens;
Fig. 7 is the three-dimensional exploded view of preferred embodiment of the improved multiple-piece aperture of the utility model camera lens;
Fig. 8, Fig. 9 and Figure 10 are that the improved multiple-piece aperture that shows the utility model camera lens is in the side view by states such as the formed opening standard-sized sheet of the breach of blade, half-open and full cut-offs;
Figure 11, Figure 12 and Figure 13 are three floor map of another embodiment of the improved multiple-piece aperture of the utility model camera lens;
Figure 14 is opened in slotted eye on the camera lens with respect to the tilt floor map at an oblique angle of the transversal section of lens barrel in the improved multiple-piece aperture of the utility model camera lens.
As shown in Figure 6, the preferred embodiment of the improved multiple-piece aperture of the utility model camera lens comprises: camera lens 10, three blades 30, ring 40 and by motor 50 and be installed in the looped drive device that the gear 52 of the output shaft front end of motor 50 is formed.Motor 50 is via the gear 52 that is connected mutually with the gear part 42 that is formed at ring 40 outer rims, rotates and drive ring 40.Because the angle of ring 40 required rotations is little in this preferred embodiment, so this gear 52 is fan-shaped with these gear part 42 formation, and this motor 50 can adopt for example motor commonly used such as stepper motor or servomotor.
Fig. 7 is the three-dimensional exploded view of preferred embodiment of the improved multiple-piece aperture of the utility model camera lens, wherein camera lens 10 is made up of lens barrel 12 and some eyeglasses 14 that is installed in the lens barrel 12, be formed with flange 16 near the stage casing of lens barrel 12, these flange 16 side faces radially uniformly-spaced offer three and use the slotted eye 18 that inserts for blade 30, the slotted eye 18 oblique angle θ that can tilt with respect to the transversal section of lens barrel 12, as shown in figure 14, can be not interfering with each other after making each blade 30 insert slotted eye 18, can not influence the mutual motion of 30 in assembling and blade yet.In addition, lens barrel 12 also is provided with some fins 20 on the barrel of flange below 16.
As shown in Figure 7, ring 40 is to be set in camera lens 10 peripheries, its side surface inner edge relative with camera lens 10 is formed with sagging recess 43, the bottom surface of this recess 43 is formed with some salient points 46, and its side surface outer rim relative with camera lens 10 then is formed with three projections 44 corresponding with the guide groove 34 of these three blades 30.The interior ring edge of ring 40 also is formed with some and fin 20 corresponding axial grooves 45 this lens barrel 12.
The following assembling mode that the preferred embodiment of the utility model camera lens is described with reference to Fig. 7.At first blade 30 is inserted the slotted eye 18 on the camera lens 10 respectively, the mode that camera lens 10 is aimed at the groove 45 that is formed at ring 40 with the fin 20 that is formed at lens barrel 12 is inserted in ring 40 again, fit into the recess 43 of ring 40 up to the flange 16 of lens barrel 12, this moment, camera lens 10 was to make point with flange 16 bottom surfaces of lens barrel 12 with the salient point 46 that is formed at this recess 43 to contact, and helped to reduce the friction force that ring 40 rotates with respect to camera lens 10.Rotation of the hoop 40 stretches into the guide groove 34 of blade 30 rear ends of slotted eye 18 respectively up to projection 44 then, and therefore by this fin 20 can prevent ring 40 and camera lens 10 break away from because this fin 20 is no longer aimed at this groove 45 this moment.
Fig. 8 to Figure 10 shows the side view of the improved multiple-piece aperture of the utility model camera lens by states such as breach 32 formed opening 36 standard-sized sheets of blade 30, half-open and full cut-offs respectively.As shown in Figure 8, projection 44 is at the end of guide groove 34 near the blade front end, this moment is by breach 32 formed opening 36 maximums of blade 30, driving ring 40 with rear motor 50 via gear 52 clockwise rotates with respect to camera lens 10, because blade 30 is subjected to the restriction of slotted eye 18, therefore during to the slip of the rear end of blade, just blade 30 straight lines can be pushed camera lens 10 along guide groove 34 when the projection 44 of ring 40.So, the amount of spin of control motor 50, i.e. the stroke of may command blade 30 straight lines turnover camera lens 10 and control the size of opening 36, and then make the improved multiple-piece aperture of the utility model camera lens make multiple aperture to change.Wherein, as shown in figure 10, the improved multiple-piece aperture of the utility model camera lens can close opening 36 fully, so the switching of improved this opening 36 of multiple-piece aperture may command of the utility model camera lens and have the function of shutter.
The utility model has the advantages that: the improved multiple-piece aperture of (1) the utility model camera lens is to utilize the ring 40 that is set in camera lens 10 peripheries rotationally, drive motion in the slotted eye 18 of multi-disc blade 30 on being opened in lens barrel 12, and change is by the size of the breach 32 formed openings 36 of blade 30 front ends, therefore can make multiple aperture and change, adapt to different capture demands.(2) the improved multiple-piece aperture of the utility model camera lens, its opening 36 are that the breach 32 by multi-disc blade 30 front ends is formed, and therefore can form near circular iris shape, to be provided as the uniform light income of image planes.(3) the improved multiple-piece aperture of the utility model camera lens, it drives multi-disc blade 30 and the design of change opening 36 sizes with ring 40, not only simple structure, assembling are easily, and 12 need of the lens barrel of its camera lens 10 are offered a plurality of slotted eyes 18, without segmentation, the problem that does not have optical axis alignment need not accurate manufacturing and assembling, therefore can reduce the cost of making the assembling camera lens.
The above is to be illustrated with regard to preferred embodiment of the present utility model, yet must know that embodiment form of the present utility model is not subjected to the restriction of this embodiment, for example:
Slotted eye 18 can be any suitable shape with blade 30, and any slotted eye 18 all should belong to equivalent utilization with the change of blade 30 shapes.
Keeping under the complete prerequisite of lens barrel 12, can increase blade 30 and with the number of blade 30 corresponding slotted eyes 18, projection 44, to form the opening 36 of more approaching circle; And as Figure 11-shown in Figure 13, slotted eye 18a forms by lens barrel 12 peripheral inwardly gradually wide shapes, blade 30a rear end is formed with pin shaft hole 33, blade 30a is the projection 44 that is located in ring 40 with pin shaft hole 33, and when ring 40 rotates, be subjected to the drive of this projection 44 and swing, and then as Figure 11 size of change opening 36 shown in Figure 13 extremely.
More than each to change other effects that example obtained identical with aforesaid preferred embodiment, do not give unnecessary details in addition.
Claims (9)
1, a kind of improved multiple-piece aperture of camera lens, it is characterized in that: it comprises: camera lens, form by lens barrel and the eyeglass that is installed in this lens barrel, this lens barrel along around be formed with a plurality of slotted eyes; A plurality of blades are en plaque, movably are installed in the slotted eye of this lens barrel, and its front end is formed with in order to constitute the breach of aperture openings; Ring is set in this camera lens periphery rotationally, and is connected with each blade in the mode that can drive the blade action; And the looped drive device, be located near this ring, in order to drive the amount of spin that ring rotated and controlled this ring.
2, the improved multiple-piece aperture of camera lens as claimed in claim 1, it is characterized in that: wherein this blade rear end is formed with guide groove, this ring has a plurality of projections of this guide groove that stretches into each this blade respectively, and this ring is to drive this blade straight line with this projection that slides on this guide groove to pass in and out this slotted eye.
3, the improved multiple-piece aperture of camera lens as claimed in claim 1, it is characterized in that: wherein, this slotted eye forms fan-shaped, this blade rear end is formed with pin shaft hole, this ring has a plurality of projections of this pin shaft hole that stretches into each this blade respectively, and this ring is to drive this blade with this projection to swing in this slotted eye.
4, as the improved multiple-piece aperture of claim 1,2 or 3 described camera lenses, it is characterized in that: wherein this slotted eye is transversal section with respect to this lens barrel angle that tilts.
5, as the improved multiple-piece aperture of claim 1,2 or 3 described camera lenses, it is characterized in that: this looped drive device gear part of comprising motor and being installed in this motor output shaft wherein, this gear part is to be connected mutually with the tab-like gear part that is formed in this ring outer rim, rotates to drive this ring.
6, the improved multiple-piece aperture of camera lens as claimed in claim 5, it is characterized in that: wherein this gear part and this gear part are fan-shaped.
7, as the improved multiple-piece aperture of claim 1,2 or 3 described camera lenses, it is characterized in that: wherein these a plurality of slotted eyes are uniformly-spaced to be opened in around this lens barrel.
8, the improved multiple-piece aperture of camera lens as claimed in claim 1 or 2 is characterized in that: wherein this breach is to form the parabola shaped of indented central at this blade front-end edge.
9, as the improved multiple-piece aperture of claim 1 or 3 described camera lenses, it is characterized in that: wherein this breach is to form radian at a lateral margin of this blade front end to become big arc from front to back gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99214406 CN2380933Y (en) | 1999-06-24 | 1999-06-24 | Lens-improved multi-film type diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99214406 CN2380933Y (en) | 1999-06-24 | 1999-06-24 | Lens-improved multi-film type diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2380933Y true CN2380933Y (en) | 2000-05-31 |
Family
ID=34006590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99214406 Expired - Fee Related CN2380933Y (en) | 1999-06-24 | 1999-06-24 | Lens-improved multi-film type diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2380933Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100380156C (en) * | 2005-04-20 | 2008-04-09 | 富士能株式会社 | Lens barrel |
| CN101893806A (en) * | 2009-05-20 | 2010-11-24 | 奥林巴斯映像株式会社 | Retaining device and camera head |
| CN101907814A (en) * | 2009-06-03 | 2010-12-08 | 奥林巴斯映像株式会社 | Iris apparatus |
| CN101878449B (en) * | 2008-07-01 | 2011-11-02 | 精工精密株式会社 | Speed reducing mechanism, drive device, and optical instrument |
| CN102466943A (en) * | 2010-11-18 | 2012-05-23 | 立志凯株式会社 | Light quantity adjustment apparatus and image pickup apparatus |
| CN106199784A (en) * | 2016-08-17 | 2016-12-07 | 东莞市协辰精密五金有限公司 | A kind of aperture blades and preparation method thereof |
| CN110082985A (en) * | 2018-01-25 | 2019-08-02 | 台湾东电化股份有限公司 | Optical system |
| CN110088659A (en) * | 2016-12-15 | 2019-08-02 | 日本电产科宝株式会社 | Optical devices for shooting |
-
1999
- 1999-06-24 CN CN 99214406 patent/CN2380933Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100380156C (en) * | 2005-04-20 | 2008-04-09 | 富士能株式会社 | Lens barrel |
| CN101878449B (en) * | 2008-07-01 | 2011-11-02 | 精工精密株式会社 | Speed reducing mechanism, drive device, and optical instrument |
| US8100593B2 (en) | 2008-07-01 | 2012-01-24 | Seiko Precision Inc. | Speed reducing mechanism, drive device, and optical instrument |
| CN101893806A (en) * | 2009-05-20 | 2010-11-24 | 奥林巴斯映像株式会社 | Retaining device and camera head |
| CN101893806B (en) * | 2009-05-20 | 2012-01-04 | 奥林巴斯映像株式会社 | Barrier apparatus and image pickup apparatus |
| CN101907814A (en) * | 2009-06-03 | 2010-12-08 | 奥林巴斯映像株式会社 | Iris apparatus |
| CN101907814B (en) * | 2009-06-03 | 2011-11-16 | 奥林巴斯映像株式会社 | Aperture apparatus |
| CN102466943A (en) * | 2010-11-18 | 2012-05-23 | 立志凯株式会社 | Light quantity adjustment apparatus and image pickup apparatus |
| CN102466943B (en) * | 2010-11-18 | 2016-08-03 | 立志凯株式会社 | Light amount adjusting device and camera head |
| CN106199784A (en) * | 2016-08-17 | 2016-12-07 | 东莞市协辰精密五金有限公司 | A kind of aperture blades and preparation method thereof |
| CN110088659A (en) * | 2016-12-15 | 2019-08-02 | 日本电产科宝株式会社 | Optical devices for shooting |
| CN110082985A (en) * | 2018-01-25 | 2019-08-02 | 台湾东电化股份有限公司 | Optical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |