US20020005993A1 - Lens barrel - Google Patents
Lens barrel Download PDFInfo
- Publication number
- US20020005993A1 US20020005993A1 US09/902,005 US90200501A US2002005993A1 US 20020005993 A1 US20020005993 A1 US 20020005993A1 US 90200501 A US90200501 A US 90200501A US 2002005993 A1 US2002005993 A1 US 2002005993A1
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- United States
- Prior art keywords
- cam
- follower
- lens barrel
- cam groove
- conical surface
- Prior art date
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
Definitions
- the present invention relates to the structure of a lens barrel (lens frame structure) having plural frame members capable of moving back and forth relatively.
- a prior art discloses a lens barrel having a lens frame capable of moving back and forth, a mechanism for driving the cylindrical lens frame using a combination of a cam groove run on the bias to the optical axis and a cam-follower that engages freely with the cam groove.
- the whole surface of the sliding surface of the cam-follower is in contact with the sliding plane of the cam groove.
- This design has been used for the structure around the conjugated area of the cam-follower put in the cam groove.
- the present invention is made to resolve this problem.
- the object of the present invention is to provide the lens barrel using the cam mechanism with a cam-follower, where the lens barrel is capable of a smooth driving back and forth and its engaging is unlikely to be pulled out the engaging part of the cam-follower and, in addition, its frame is easy to be manufactured.
- the lens barrel of the present invention comprises a first frame having a cam-follower with a conical surface part and a circular ring part where the edge is formed in the outer circumference, and a second frame having the first cam groove engaged and conjugated with sliding only with the conical surface part of the cam-follower and the second cam groove engaged and conjugated with sliding simultaneously with both the conical surface part and the circular ring part of the cam-follower.
- the lens barrel of the present invention comprises a first frame having a cam-follower with a conical surface part and a circular ring part where the edge is formed in the outer circumference, and a second frame having the cam groove engaged and conjugated with sliding of both the conical surface part and the circular ring part of the cam-follower.
- FIG. 1 is an exploded oblique perspective view of a lens barrel of one embodiment related to the present invention.
- FIG. 2 is a longitudinal sectional diagram of the lens barrel of the embodiment related to the present invention.
- FIG. 3 is a lateral diagram of the cam-follower applying to the lens barrel of the embodiment related to the present invention.
- FIG. 4 is a development diagram of the inner circumference showing the shape of the cam groove at the cam ring of the lens barrel of the embodiment related to the present invention.
- FIG. 5 is a partially sectional diagram engaging part of the cam groove and cam-follower of the lens barrel of the embodiment related to the present invention, showing V-V section of FIG. 4.
- FIG. 6 is a partially sectional diagram engaging part of the cam groove and cam-follower of the lens barrel of the embodiment related to the present invention, showing VI-VI section of FIG. 4.
- FIG. 7 is a partially sectional diagram engaging part of the cam groove and cam-follower of the lens barrel of the embodiment related to the present invention, showing VII-VII section of FIG. 4.
- FIG. 8 is a partially sectional diagram engaging part of the cam groove and cam-follower of the lens barrel of the embodiment related to the present invention, showing VIII-VIII section of FIG. 4.
- FIG. 1 is an exploded oblique perspective view of the lens barrel showing partial elements of the zoom lens barrel of one embodiment related to the present invention.
- FIG. 2 is a longitudinal sectional diagram of the lens barrel mentioned above.
- FIG. 3 is a lateral diagram of the cam-follower with the lens barrel mentioned above, and
- FIG. 4 is a development diagram of the inner circumference surface showing the configuration of the cam groove at the cam ring of the lens barrel mentioned above.
- FIGS. 5 to 8 are partially sectional diagrams engaging part of the cam groove and cam-follower of the lens barrel mentioned above, and FIG. 5 shows V-V section of FIG. 4, FIG. 6 shows VI-VI section of FIG. 4, FIG. 7 shows VII-VII section of FIG. 4, and FIG. 8 shows VIII-VIII section of FIG. 4.
- Lens barrel 10 of the embodiment of the present invention comprises a moving frame 1 supported by a fixed frame (not shown) so as to move back and forth, a cam ring 2 as the first frame member supported with rotational ability put into outer surface 1 a of moving frame 1 , a holding frame 3 with lens 4 , which is the second frame member supported with movement ability in relative displacement put into inner circumference surface 2 a of the cam ring 2 and guided to the optical axis O direction by moving frame 1 .
- cam grooves 2 C are described later referring to FIGS. 4 to 8 .
- the lens holding frame 3 comprises 3 lines of guide grooves 3 b that slide freely into 3 lines of straight guides 1 c of moving frame 1 in the inner circumference, and cam-follower installation holes 3 c on the outer circumference surface 3 a at three locations. Three cam-followers 5 are pressed into the cam-follower installation holes 3 c and fixed.
- the cam-follower 5 comprises a conical surface part 5 a in the upper part, a circular ring part 5 c , and a flange plane 5 d in the lower part, and a shaft part 5 e pressed into the installation hole 3 c .
- the conical surface part 5 a in the upper part has a conical surface with ⁇ 1 at angle of conical surface (2 ⁇ cone angle) and an edge part with an external diameter D 1 (the greatest external diameter of conical surface) formed by an oblique part 5 b making angle ⁇ 2 with the conical surface.
- the circular ring part 5 c is arranged underneath the oblique part 5 b and has an edge part with external diameter D 2 having an edge angle ⁇ 3 .
- the external diameter of circular ring part 5 c has a circumference surface with tube shape and slight width to adjust the width. Size of external diameter D 2 is greater than one of external diameter D 1 .
- Cam groove 2 C arranged on cam ring 2 is composed of 3 portions and the same shape of inner cam grooves as shown in the development figure of the inner circumference of the cam ring 2 of FIG. 4.
- Each cam groove 2 C is a cam groove to introduce a cam-follower.
- a cam to provide the position of zoom wide end of the cam-follower (wide end function) is corresponding to the cam groove 2 C 2
- a cam to provide the position of zoom tele end of the cam-follower (tele end function) is corresponding to the cam groove 2 C 4
- a cam to provide zoom area between wide end and tele end of the cam follower is corresponding to the cam groove 2 C 3 .
- Sectional shape at a right angle of the cam groove 2 C 2 and 2 C 4 is a shape having oblique plane part 2 Ca with the same angle as conical surface angle ⁇ 1 of the cam-follower 5 as shown in sectional view of FIG. 5, and a pair of parallel wall planes 2 Cb perpendicular to the direction of moving (optical axis O) toward the inner circumference surface from the oblique plane.
- the groove width of the pair of parallel wall planes 2 Cb is nearly the same as the external diameter D 2 of the circular ring part and has the groove width B 2 which can be fitted for the circular ring part 5 c in such status that the gap is so narrow that the circular ring part 5 c of the cam-follower 5 could manage to slide smoothly.
- the height of the parallel wall plane 2 Cb mentioned above gets lower gradually. (Refer to FIG. 6)
- cam groove 2 C 3 its sectional shape at right angle of the cam groove 2 C 3 is formed by oblique plane part 2 Cd whose angle is equal to conical angle ⁇ 1 of the cam-follower 5 shown in sectional view of FIG. 7. Its oblique plane is extended to inner circumference surface 2 a of the cam ring 2 , and opening groove width B 3 on the inner circumference is greater than the external diameter D 2 at the circular ring of the cam-follower.
- cam grooves 2 c sectional shape at right angle of the groove of introductory groove 2 C 1 is the same shape as the cam groove 2 C 2 . But there is no limitation if the cam-follower 5 has a shape that is insertable.
- the cam-follower 5 of the lens holding frame 3 is put in place to be engaged and slid with the cam groove 2 C of the cam ring 2 .
- the cam-follower 5 slides along the cam groove 2 C.
- the cam-follower 5 is in the area of the cam groove 2 C 2 or the cam groove 2 C 4 , the lens holding frame 3 is not subject to be driven back and forth, only the cam ring 2 rotates with respect to the moving frame 1 .
- cam-follower 5 is in the area of the cam groove 2 C 3 , when the cam ring 2 rotates, the lens holding frame 3 is subject to be driven back and forth in the direction of the optical axis O by the cam groove 2 C 3 and the cam-follower 5 as cam means.
- edge of the circular ring 5 c will dig into the parallel wall plane 2 Cb, parallel to the direction where the cam-follower pulls off the cam groove.
- the force by digging works effectively and prevents deviation of the frame member with more certainty.
- Lens barrel 10 of the embodiment of the present invention as described above presents smooth driving back and forth of the lens holding frame 3 , and at the same time, when the cam-follower 5 is engaged with the cam groove 2 C 3 of the cam ring 2 , or with the cam groove 2 C 2 and 2 C 4 , the lens barrel 10 prevents the cam ring 2 and the lens holding frame 3 from being deviated with more certainty, as the cam-follower 5 is unlikely to be deviated off each cam groove, if any stress is applied to the cam-follower 5 through the frame member.
- the cam groove 2 C 2 and 2 C 4 of the cam ring 2 have parallel wall plane 2 Cb perpendicular to the optical axis O.
- the groove direction of the cam groove runs along the periphery direction perpendicular to the optical axis O and the rest of the cam groove has oblique plane open to the optical axis O. Therefore, even if the sliding direction of the molding die for the cam groove of the cam ring 2 is perpendicular to the optical axis O, no production of an undercut part makes manufacturing easy.
- the greatest external diameter of the conical surface in the cam-follower of the embodiment of the present invention is different from an external diameter of the circular ring.
- the second groove width can be made with the same diameter as an external diameter of the circular ring.
- the second cam groove is formed on the circumference of the circular cylinder frame crossed with the plane perpendicular to the optical axis. But it is not necessary that the second cam groove be made on this circumference, if dies cutting by injection molding are feasible.
- the second cam groove can be made in direction oblique to the optical axis.
- a groove is provided at the axis 5 e of the cam-follower 5 and edge generated by formation of the groove is located in the installation hole of the frame 3 . Then, making the edge dig in the hole, the stress can make engagement of the edge part and the hole stronger.
- a lens barrel using the cam mechanism with a the cam follower makes feasible a smooth driving back and forth, with the deviation engagement of a frame member at the engaging part of a cam-follower is less likely to happen. In addition, manufacturing of the frame member is easy.
Abstract
Description
- This application claims benefit of Japanese Application No. 2000-211576 filed on Jul. 12, 2000, the contents of which is incorporated by this reference.
- 1. Field of the Invention
- The present invention relates to the structure of a lens barrel (lens frame structure) having plural frame members capable of moving back and forth relatively.
- 2. Description of Related Art
- A prior art discloses a lens barrel having a lens frame capable of moving back and forth, a mechanism for driving the cylindrical lens frame using a combination of a cam groove run on the bias to the optical axis and a cam-follower that engages freely with the cam groove. The whole surface of the sliding surface of the cam-follower is in contact with the sliding plane of the cam groove. This design has been used for the structure around the conjugated area of the cam-follower put in the cam groove.
- The size of lens frame structure has been getting compact and thickness of the lens frame structure itself has been inclined to be thinner due to the demand for downsizing and weight saving for these products in recent years. In the event of careless stress such as impact to a cam-follower, there is a chance that the lens frame will be distorted and the engagement of the cam and the cam-follower will be pulled out. Also, in the case the cam groove has a parallel side wall, manufacturing the lens frame is difficult because the cam groove may be undercut.
- To solve said problem, in the lens frame disclosed in Laid Open Patent Publication 2000-131588, one cam structure has been proposed, applying a cam groove with a V-shape in the cross-section and a cam-follower with a tapered shape. In this cam structure, the phenomenon of digging occurs due to the edge part arranged at the cam-follower with a tapered shape that makes direct contact with the cam groove plane, which is an oblique plane. This results in preventing the cam-follower from pulling out of the cam groove.
- The cam structure disclosed in the Laid Open Patent Publication 2000-131588 could prevent the cam-follower and the cam groove from being pulled out by the edge caused by the cam-follower digging into the cam groove plane, which is an oblique plane. However, effecting the prevention of pulling out has not been always achieved for frame structure with extremely weak rigidity in particular, since the plane in direct contact with said edge part is an oblique plane over the area of the cam groove.
- The present invention is made to resolve this problem. The object of the present invention is to provide the lens barrel using the cam mechanism with a cam-follower, where the lens barrel is capable of a smooth driving back and forth and its engaging is unlikely to be pulled out the engaging part of the cam-follower and, in addition, its frame is easy to be manufactured.
- The lens barrel of the present invention comprises a first frame having a cam-follower with a conical surface part and a circular ring part where the edge is formed in the outer circumference, and a second frame having the first cam groove engaged and conjugated with sliding only with the conical surface part of the cam-follower and the second cam groove engaged and conjugated with sliding simultaneously with both the conical surface part and the circular ring part of the cam-follower.
- Also, the lens barrel of the present invention comprises a first frame having a cam-follower with a conical surface part and a circular ring part where the edge is formed in the outer circumference, and a second frame having the cam groove engaged and conjugated with sliding of both the conical surface part and the circular ring part of the cam-follower.
- The invention is described in detail in the following figures, in which like elements are referred to with like numerals, and in which:
- FIG. 1 is an exploded oblique perspective view of a lens barrel of one embodiment related to the present invention.
- FIG. 2 is a longitudinal sectional diagram of the lens barrel of the embodiment related to the present invention.
- FIG. 3 is a lateral diagram of the cam-follower applying to the lens barrel of the embodiment related to the present invention.
- FIG. 4 is a development diagram of the inner circumference showing the shape of the cam groove at the cam ring of the lens barrel of the embodiment related to the present invention.
- FIG. 5 is a partially sectional diagram engaging part of the cam groove and cam-follower of the lens barrel of the embodiment related to the present invention, showing V-V section of FIG. 4.
- FIG. 6 is a partially sectional diagram engaging part of the cam groove and cam-follower of the lens barrel of the embodiment related to the present invention, showing VI-VI section of FIG. 4.
- FIG. 7 is a partially sectional diagram engaging part of the cam groove and cam-follower of the lens barrel of the embodiment related to the present invention, showing VII-VII section of FIG. 4.
- FIG. 8 is a partially sectional diagram engaging part of the cam groove and cam-follower of the lens barrel of the embodiment related to the present invention, showing VIII-VIII section of FIG. 4.
- The embodiment of the present invention will be described referring to the drawings.
- FIG. 1 is an exploded oblique perspective view of the lens barrel showing partial elements of the zoom lens barrel of one embodiment related to the present invention. FIG. 2 is a longitudinal sectional diagram of the lens barrel mentioned above. FIG. 3 is a lateral diagram of the cam-follower with the lens barrel mentioned above, and FIG. 4 is a development diagram of the inner circumference surface showing the configuration of the cam groove at the cam ring of the lens barrel mentioned above. FIGS.5 to 8 are partially sectional diagrams engaging part of the cam groove and cam-follower of the lens barrel mentioned above, and FIG. 5 shows V-V section of FIG. 4, FIG. 6 shows VI-VI section of FIG. 4, FIG. 7 shows VII-VII section of FIG. 4, and FIG. 8 shows VIII-VIII section of FIG. 4.
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Lens barrel 10 of the embodiment of the present invention comprises a movingframe 1 supported by a fixed frame (not shown) so as to move back and forth, acam ring 2 as the first frame member supported with rotational ability put intoouter surface 1 a of movingframe 1, aholding frame 3 withlens 4, which is the second frame member supported with movement ability in relative displacement put intoinner circumference surface 2 a of thecam ring 2 and guided to the optical axis O direction by movingframe 1. - In the
cam ring 2 described above, agear part 2 b for rotational drive on the outer circumference of thecam ring 2 is provided, and in theinner circumference 2 a fitting partially to theouter circumference surface 1 a of movingframe cam grooves 2C are provided. Shapes ofcam grooves 2C are described later referring to FIGS. 4 to 8. - The lens holding
frame 3 comprises 3 lines ofguide grooves 3 b that slide freely into 3 lines ofstraight guides 1 c of movingframe 1 in the inner circumference, and cam-follower installation holes 3 c on theouter circumference surface 3 a at three locations. Three cam-followers 5 are pressed into the cam-follower installation holes 3 c and fixed. - The cam-
follower 5 comprises aconical surface part 5 a in the upper part, acircular ring part 5 c, and aflange plane 5 d in the lower part, and ashaft part 5 e pressed into theinstallation hole 3 c. Theconical surface part 5 a in the upper part has a conical surface with θ1 at angle of conical surface (2×cone angle) and an edge part with an external diameter D1 (the greatest external diameter of conical surface) formed by anoblique part 5 b making angle θ2 with the conical surface. Thecircular ring part 5 c is arranged underneath theoblique part 5 b and has an edge part with external diameter D2 having an edge angle θ3. The external diameter ofcircular ring part 5 c has a circumference surface with tube shape and slight width to adjust the width. Size of external diameter D2 is greater than one of external diameter D1. -
Cam groove 2C arranged oncam ring 2 is composed of 3 portions and the same shape of inner cam grooves as shown in the development figure of the inner circumference of thecam ring 2 of FIG. 4. Eachcam groove 2C is a cam groove to introduce a cam-follower. - The introductory groove2C1 along with the direction of the optical axis O having an opening on the back end plane of the
cam ring 2, the cam groove 2C2 which is the second cam groove formed in parallel to the plane perpendicular to the direction of the optical axis O, the cam groove 2C3 which is the first cam groove running obliquely to the direction of the optical axis O and the cam groove 2C4 which is the second cam groove formed in parallel to the plane perpendicular to the direction of the optical axis O are all a junctural cam. For instance a cam to provide the position of zoom wide end of the cam-follower (wide end function) is corresponding to the cam groove 2C2, a cam to provide the position of zoom tele end of the cam-follower (tele end function) is corresponding to the cam groove 2C4 and a cam to provide zoom area between wide end and tele end of the cam follower is corresponding to the cam groove 2C3. - Sectional shape at a right angle of the cam groove2C2 and 2C4 is a shape having oblique plane part 2Ca with the same angle as conical surface angle θ1 of the cam-
follower 5 as shown in sectional view of FIG. 5, and a pair of parallel wall planes 2Cb perpendicular to the direction of moving (optical axis O) toward the inner circumference surface from the oblique plane. The groove width of the pair of parallel wall planes 2Cb is nearly the same as the external diameter D2 of the circular ring part and has the groove width B2 which can be fitted for thecircular ring part 5 c in such status that the gap is so narrow that thecircular ring part 5 c of the cam-follower 5 could manage to slide smoothly. In the connection part of the cam groove 2C2 and 2C4 with the cam groove 2C3, the height of the parallel wall plane 2Cb mentioned above gets lower gradually. (Refer to FIG. 6) - As far as cam groove2C3 concerned, its sectional shape at right angle of the cam groove 2C3 is formed by oblique plane part 2Cd whose angle is equal to conical angle θ1 of the cam-
follower 5 shown in sectional view of FIG. 7. Its oblique plane is extended toinner circumference surface 2 a of thecam ring 2, and opening groove width B3 on the inner circumference is greater than the external diameter D2 at the circular ring of the cam-follower. - Among
cam grooves 2 c, sectional shape at right angle of the groove of introductory groove 2C1 is the same shape as the cam groove 2C2. But there is no limitation if the cam-follower 5 has a shape that is insertable. - As far as
lens barrel 10 of embodiment in the present invention having the configuration described above, the cam-follower 5 of thelens holding frame 3 is put in place to be engaged and slid with thecam groove 2C of thecam ring 2. When thecam ring 2 is subject to rotation by thegear 2 b, the cam-follower 5 slides along thecam groove 2C. At that time, when the cam-follower 5 is in the area of the cam groove 2C2 or the cam groove 2C4, the lens holdingframe 3 is not subject to be driven back and forth, only thecam ring 2 rotates with respect to the movingframe 1. If the cam-follower 5 is in the area of the cam groove 2C3, when thecam ring 2 rotates, the lens holdingframe 3 is subject to be driven back and forth in the direction of the optical axis O by the cam groove 2C3 and the cam-follower 5 as cam means. - When the cam-
follower 5 is engaged with the cam groove 2c3,conical surface 5 a of the cam-follower 5 is in contact with the oblique plane 2Cd as shown in FIG. 7. In the above state, when thecam ring 2 is driven or stationary and when any unnecessary or careless stress is applied to thelens holding frame 3, the cam-follower 5 will receive the lateral pressure, and the frame member will be distorted and will be deviated off cam groove 2C3. Theedge 5 f in the low end of theconical surface part 5 a of the cam-follower 5 will dig into the oblique plane part 2Cd of the cam groove and the force for the prevention of deviation will be generated. Therefore, the deviation by distortion of thecam ring 2 and thelens holding frame 3 is prevented. - On the other hand, in the state that the cam-
follower 5 is engaged with the cam groove 2C2 or 2C4, theconical surface 5 a gets in direct contact with the oblique plane 2Ca of the cam groove as shown in FIG. 5, and at the same time the edge of the circular ring 5C of the cam-follower gets in direct contact with the parallel wall plane 2Cb as well. - In the above state, when the
cam ring 2 is driven or stationary and when any unnecessary or careless stress is applied to thelens holding frame 3, the cam-follower 5 will receive lateral pressure, and the frame member will be distorted and be deviated off cam groove. Theedge 5 f in the low end of theconical surface 5 a of the cam-follower will dig into oblique plane 2Ca of the cam groove, and moreover edge part of thecircular ring 5 c will dig into parallel wall plane 2Cb and force for prevention of deviation will be generated. The force prevents the deviation by distortion of thecam ring 2 and thelens holding frame 3. In this case, edge of thecircular ring 5 c will dig into the parallel wall plane 2Cb, parallel to the direction where the cam-follower pulls off the cam groove. As a result, the force by digging works effectively and prevents deviation of the frame member with more certainty. -
Lens barrel 10 of the embodiment of the present invention as described above presents smooth driving back and forth of thelens holding frame 3, and at the same time, when the cam-follower 5 is engaged with the cam groove 2C3 of thecam ring 2, or with the cam groove 2C2 and 2C4, thelens barrel 10 prevents thecam ring 2 and thelens holding frame 3 from being deviated with more certainty, as the cam-follower 5 is unlikely to be deviated off each cam groove, if any stress is applied to the cam-follower 5 through the frame member. - This is especially true, if there are usual settings for the wide angle end or the telephoto end, as a zoom state of the
lens barrel 10, at that time, the cam-follower 5 is engaged with the cam groove 2C2 or 2C4. Therefore, the edge of the cam-follower 5 digs into the parallel wall plane 2Cb as described above. As its force by digging works effectively, in most of cases, deviation of thecam ring 2 and thelens holding frame 3 can be prevented. - In addition, the cam groove2C2 and 2C4 of the
cam ring 2 have parallel wall plane 2Cb perpendicular to the optical axis O. But the groove direction of the cam groove runs along the periphery direction perpendicular to the optical axis O and the rest of the cam groove has oblique plane open to the optical axis O. Therefore, even if the sliding direction of the molding die for the cam groove of thecam ring 2 is perpendicular to the optical axis O, no production of an undercut part makes manufacturing easy. - The mechanism of edge of the cam-
follower 5 digging into the contacting plane of the cam groove emerges remarkably in case thecam ring 2 and/or thelens holding frame 3 are molded parts made of synthetic resins, and the cam-follower 5 is metal parts. - The greatest external diameter of the conical surface in the cam-follower of the embodiment of the present invention is different from an external diameter of the circular ring. The second groove width can be made with the same diameter as an external diameter of the circular ring.
- In the embodiment, the second cam groove is formed on the circumference of the circular cylinder frame crossed with the plane perpendicular to the optical axis. But it is not necessary that the second cam groove be made on this circumference, if dies cutting by injection molding are feasible. The second cam groove can be made in direction oblique to the optical axis.
- Moreover, a groove is provided at the
axis 5 e of the cam-follower 5 and edge generated by formation of the groove is located in the installation hole of theframe 3. Then, making the edge dig in the hole, the stress can make engagement of the edge part and the hole stronger. - A lens barrel using the cam mechanism with a the cam follower, makes feasible a smooth driving back and forth, with the deviation engagement of a frame member at the engaging part of a cam-follower is less likely to happen. In addition, manufacturing of the frame member is easy.
- While this invention has been described in conjunction with the specific embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those of ordinary skill in the art. Accordingly, preferred embodiments of the invention as set forth herein are intended to be illustrative, not limiting. These are changes that may be made without departing from the spirit and scope of the present invention.
Claims (15)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2000211576A JP4580516B2 (en) | 2000-07-12 | 2000-07-12 | Mirror frame device |
JP2000-211576 | 2000-07-12 |
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US20020005993A1 true US20020005993A1 (en) | 2002-01-17 |
US6373641B2 US6373641B2 (en) | 2002-04-16 |
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Application Number | Title | Priority Date | Filing Date |
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US09/902,005 Expired - Fee Related US6373641B2 (en) | 2000-07-12 | 2001-07-10 | Lens barrel |
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JP (1) | JP4580516B2 (en) |
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US20090052069A1 (en) * | 2007-08-22 | 2009-02-26 | Shuhei Kaneko | Cam follower for lens barrel and lens barrel |
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JPH0345212Y2 (en) * | 1985-08-28 | 1991-09-25 | ||
US4707083A (en) * | 1984-09-29 | 1987-11-17 | Canon Kabushiki Kaisha | Lens moving device |
JP2802950B2 (en) * | 1989-11-20 | 1998-09-24 | 旭光学工業株式会社 | Lens cam mechanism |
JP2567258Y2 (en) * | 1990-05-29 | 1998-04-02 | 旭光学工業株式会社 | Lens guide device |
JPH06250063A (en) * | 1993-02-24 | 1994-09-09 | Canon Inc | Lens barrel and engagement mechanism for cylindrical member |
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US5926322A (en) * | 1997-08-04 | 1999-07-20 | Fuji Photo Film Co., Ltd. | Zoom lens device with zooming position detector |
US6198578B1 (en) * | 1998-10-23 | 2001-03-06 | Olympus Optical Co., Ltd. | Cam follower and lens barrel |
JP2000131589A (en) * | 1998-10-23 | 2000-05-12 | Olympus Optical Co Ltd | Cam follower and lens barrel |
JP2000131588A (en) * | 1998-10-23 | 2000-05-12 | Olympus Optical Co Ltd | Lens barrel |
-
2000
- 2000-07-12 JP JP2000211576A patent/JP4580516B2/en not_active Expired - Fee Related
-
2001
- 2001-07-10 US US09/902,005 patent/US6373641B2/en not_active Expired - Fee Related
Cited By (14)
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US6538826B2 (en) * | 2001-06-28 | 2003-03-25 | Olympus Optical Co., Ltd. | Lens barrel |
US8023200B2 (en) * | 2007-02-08 | 2011-09-20 | Panasonic Corporation | Movable body driving mechanism |
US20080190241A1 (en) * | 2007-02-08 | 2008-08-14 | Matsushita Electric Industrial Co., Ltd. | Movable body driving mechanism |
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EP2458418A3 (en) * | 2007-02-08 | 2012-09-12 | Panasonic Corporation | Movable body driving mechanism |
CN102654633A (en) * | 2007-02-08 | 2012-09-05 | 松下电器产业株式会社 | Lens barrel |
US20090034858A1 (en) * | 2007-08-01 | 2009-02-05 | Flierl Markus H | Systems, Methods, Devices and Arrangements for Motion-Compensated Image Processing and Coding |
US20090052069A1 (en) * | 2007-08-22 | 2009-02-26 | Shuhei Kaneko | Cam follower for lens barrel and lens barrel |
US7839583B2 (en) * | 2007-08-22 | 2010-11-23 | Olympus Imaging Corp. | Cam follower for lens barrel and lens barrel |
CN101614859A (en) * | 2008-06-27 | 2009-12-30 | 佳能株式会社 | Lens barrel |
US20110019290A1 (en) * | 2009-07-27 | 2011-01-27 | Panasonic Corporation | Lens barrel and imaging device |
US8665535B2 (en) * | 2009-07-27 | 2014-03-04 | Panasonic Corporation | Lens barrel and imaging device |
US8953253B2 (en) | 2011-11-11 | 2015-02-10 | Panasonic Intellectual Property Management Co., Ltd. | Lens barrel |
US20160206362A1 (en) * | 2015-01-21 | 2016-07-21 | Serene Medical, Inc. | Systems and devices to identify and limit nerve conduction |
Also Published As
Publication number | Publication date |
---|---|
US6373641B2 (en) | 2002-04-16 |
JP4580516B2 (en) | 2010-11-17 |
JP2002023036A (en) | 2002-01-23 |
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