CN100582848C - Lens barrel and photography device - Google Patents
Lens barrel and photography device Download PDFInfo
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- CN100582848C CN100582848C CN200710154789A CN200710154789A CN100582848C CN 100582848 C CN100582848 C CN 100582848C CN 200710154789 A CN200710154789 A CN 200710154789A CN 200710154789 A CN200710154789 A CN 200710154789A CN 100582848 C CN100582848 C CN 100582848C
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Abstract
Light-shade components 21 are arranged on one side of photographic elements of shutter device 15. The main body of light-shade component, flat-shaped light-shade parts form a face which is approximately vertical to and intersects at optical axis, and the light-shade parts itself is disposed on the face vertical to and intersecting at optical axis tightlocked with one side of photographic elements of shutter device 15.Cam ring 8 is wedged in flat-shaped light-shade parts of light-shade components 21, when cam ring rotates around optical axis. The movement of rotation is transferred, which caused rotation of light-shade components21 with optical axis centered. Light-shade part of light-shade components 21 roughly has the shape of a truncated cone, shadows or open backoff-open-part 15a of shutter device 15 and backoff- open-part 12a of the second lens group (lens supporting frame)12 by the movement of rotation. So it can be installed in a narrow part in order to have a good shadow composition with good durability and to prevent harm light from getting to photographic part.
Description
Technical field
Involved in the present invention is in certain mode accommodates lens combination is built-in, in another kind of mode, again lens combination is produced the lens barrel that uses to assigned position, particularly be suitable for a plurality of lens combination are relatively moved with the lens barrel of the zoom lens that change its focal length, and the camera that uses this kind lens barrel.
Background technology
In cameras such as digital camera, high performance along with the photographic lenss such as zoom lens that can change focal length, and the development of the desired miniaturization of user etc., beyond photography state, lens barrel is housed in the camera body, that is the use of built-in photographic lens more and more widely.Further being, is not simple miniaturization, but according to the further requirement of slimming, whether built-in gauge of accommodating the lens barrel part under the state can reduce to the limit just becomes extremely important.
As the technology that requires corresponding to this camera slimming, though what adopt is the built-in formation of beyond photography state lens barrel being accommodated in the camera body, but in this built-in lens barrel, the shutter device that has comprised tripper or tripper and aperture diaphragm mechanism, and support a plurality of lens combination have lens separately at least, a plurality of lens supports frames etc. each other, perhaps the shortening owing to distance produces intervention between the fixed part of they and base side, in order to eliminate this intervention, or with the excision of the part of lens supports frame, or in the part of lens supports frame, establish the hole, prevent to intervene shutter device or lens supports frame with formation, as the peristome of keeping out of the way, promptly keep out of the way peristome.Such result is the light path by original lens not, but keeping out of the way in shutter device or lens supports frame produce harmful light in the peristome, this harmful light can cause image deteriorations such as flare.
For example, as be used to make lens barrel more slimming technology and by the having of motion, in that lens combination is built-in when accommodating, the part of lens combination is removed the mechanism of keeping out of the way beyond the optical axis.When carry out with this lens combination keep out of the way and when inserting correlate on the optical axis mobile, guide support is kept out of the way the axis of guide of keeping out of the way the lens supports frame of lens combination and is accommodated under the state built-in, is configured in the same space with shutter device and other lens supports frames.At this moment, at least one in shutter device and the lens supports frame kept out of the way peristome in order to prevent from must offer with the intervention of the axis of guide.
When producing, lens barrel enters photography may state the time, because shutter device and lens supports frame are to producing by the thing side, though can not intervene with the axis of guide, but by the thing side, for example the incident light that comes of the 1st lens combination can be by the peristome of keeping out of the way of shutter device and lens supports frame, and arrives for example by CCD (charge bonded element) photographic element that solid photographic element constituted.
That is, this lens barrel as shown in Figure 7, include CCD solid photographic element 1, low-pass filter (LPF) 2, fixed frame the 3, the 1st rotate mobile frame the 4, the 1st directly advance mobile frame the 5, the 2nd rotate mobile frame the 6, the 2nd directly advance mobile frame 7, cam ring the 8, the 3rd directly advance mobile frame 9, front decoration parts the 10, the 1st lens combination the 11, the 2nd lens combination the 12, the 3rd lens combination the 13, the 4th lens combination 14, have aperture diaphragm mechanism shutter device 15, keep out of the way lens supports frame 16, carriage rotation axis 17, the axis of guide 18, substrate 19 and fixed head 20.At this moment, the 2nd lens combination 12 comprises the lens supports frame that supports it.When being built-in accommodating, the 3rd lens combination 13 keeps out of the way the lens combination of keeping out of the way beyond the optical axis, it is supported by keeping out of the way lens supports frame 16, keeping out of the way lens supports frame 16 is that rotate at the center with carriage rotation axis 17, and the 3rd lens combination 13 is being moved on the optical axis and between the retreating position.The effect of the axis of guide 18 is, for example is positioned on the optical axis when the 3rd lens combination 13, and advances and retreat when mobile along optical axis, and the regulation guiding is made in the position of keeping out of the way lens supports frame 16.In the lens supports frame of the 2nd lens combination 12, offer when being used for built-in accommodating insert gathering sill 18 keep out of the way peristome 12a, 15 li of shutter devices, also offered insert gathering sill 18 when being used for built-in accommodating keep out of the way peristome 15a.Incident light by the 1st lens combination 11, it or not the aperture diaphragm opening of shutter device 15, but the lens supports frame by the 2nd lens combination 12 keep out of the way peristome 12a and shutter device 15 keep out of the way peristome 15a, arrive the CCD photographic element after reflection at the inside diameter 8b of cam ring 8.
At this moment, the frame transmission of CCD solid photographic element 1 in proper order as illustrated in Figure 8, after mechanical shutter is closed, though being accumulated in the electric charge of 1 li of CCD solid photographic element between exposure period obtains transmitting, owing to also have the incident of light in this transmission, in the image that obtains as the photography result, the such whiting decorative pattern of so-called flare can take place, perhaps band takes place in the frame delivery time deviation because of CCD in image.
The technology of the harmful light of keeping out of the way peristome of this scioptics carriage of alignment processing, be disclosed in for example patent documentation 1 (spy opens 2006-79070 number), patent documentation 2 (spy opens 2005-308843 number), and patent documentation 3 (utility model is logined communique No. 2565022) lining.1 li of patent documentation, disclose can elastic deformation elasticity shading tongue piece be fixed in the lens supports frame formation of the peristome of groove shape being carried out shading by this elasticity shading tongue piece is contacted with the inner peripheral surface of periphery lens barrel.2 li of patent documentations, disclose in the wall portion of the lens supports frame that the excision peristome is arranged, with be provided with in the face that optical axis intersects vertically with the substantially parallel axis of optical axis be anti-dazzling screen axle, that can shake, under built-in state of accommodating, because of the projection of other lenses frame is kept out of the way to substantially parallel with optical axis direction; Under photography state, anti-dazzling screen is returned to and the intersect vertically formation of the substantially parallel shading state of face of optical axis because of paying the gesture parts.3 li of patent documentations, the light-blocking member that is made of the film shading thin slice that is processed with many radial entries in peripheral edge portion by being provided with is disclosed, come the space peristome of sliding gomphosis portion is carried out the formation of shading.
Patent documentation 1: the spy opens the 2006-79070 communique
Patent documentation 2: the spy opens the 2005-308843 communique
Patent documentation 3: utility model is logined communique No. 2565022
Summary of the invention
Yet, because the formation shown in patent documentation 1～patent documentation 3, not the flexural deformation that utilizes light-blocking member, utilize exactly intersect vertically in the face with optical axis, with the optical axis parallel shafts be that the center rotates, it is with respect to guiding parts, keep out of the way peristome as the lens supports frame kept out of the way and the such part of peristome of keeping out of the way of shutter device, and it is inappropriate carrying out shading at very narrow position.And, in patent documentation 1 disclosed formation, since be push can elastic deformation parts make it flexural deformation, take place with regard to having persistent problem, and become with respect to the resistance that relatively moves between lens supports frame and the periphery lens barrel, can the driving force of lens barrel be exerted an influence.In patent documentation 2 disclosed formations, to accommodate under the state because anti-dazzling screen is kept out of the way with the direction substantially parallel with optical axis built-in, the size of anti-dazzling screen can influence lens barrel in built-in size of accommodating under the state, for example can increase thickness etc.If adopt the formation of patent documentation 3 to be used as lens barrel of the present invention, lens barrel is built-in when accommodating state, photomask is produced load always, if keep the built-in state of accommodating for a long time, plastic yield will take place in photomask, and the shading in the time of just might giving photography state brings obstacle.
Because the present invention in view of above situation, can be installed in narrow positions, reaches the shading formation of high-durability and can prevent effectively that harmful light from arriving the lens barrel and the camera of photographic element so its purpose is to provide.
That is, the purpose of the 1st technical scheme of the present invention is to be to provide a kind of like this lens barrel, and it does not need to occupy more space, only with simple formation, just can prevent effectively that harmful light from arriving photographic element, the shading that can also reach high-durability constitutes.
The purpose of the 2nd technical scheme of the present invention is to be to provide a kind of like this lens barrel, and its characteristics are that its formation is narrower, the more miniaturization in space that tripper and aperture diaphragm are occupied.
The purpose of the 3rd technical scheme of the present invention is to be to provide a kind of like this lens barrel, even its characteristics are also can reach shading effectively and constitute for the lens supports frame that exists the configuration of next-door neighbour's shutter device.
The purpose of the 4th technical scheme of the present invention is to be to provide a kind of like this lens barrel, and its characteristics are can be effectively and reach easily keeping out of the way the switch of peristome.
The purpose of the 5th technical scheme of the present invention is to be to provide a kind of like this lens barrel, and its characteristics are to make relatively moving and the shift position stabilization with respect to the light-blocking member of shutter device.
The purpose of the 6th technical scheme of the present invention is to be to provide a kind of like this lens barrel, its characteristics be can with the action of lens supports frame that is in close proximity to shutter device and does the connection action mutually behind the interlock, come switch to keep out of the way peristome.
The purpose of the 7th technical scheme of the present invention is to be to provide a kind of like this camera, and it does not need to occupy more space, only with simple formation, just can prevent effectively that harmful light from arriving photographic element, and the shading that can also reach high-durability constitutes.
According to technical scheme 1 described lens barrel involved in the present invention, in order to achieve the above object, it provides a kind of like this lens barrel, it can be from at least a portion a plurality of lens combination the is built-in built-in state of accommodating after accommodating, that accommodate these a plurality of lens combination, to by at least a portion in described a plurality of lens combination being moved to a side to thing, make it to enter the photography state that can photograph, it comprises: shutter device, and it has the tripper of switch light path of photography; At least one lens supports frame, its support to constitute in the lens of described a plurality of lens combination and the lens combination at least any one; Guiding parts, it is set at the outside that is not described shutter device, but in the inboard field, is used for guiding at least one of described lens supports frame; And, in described shutter device, be formed with and insert the keep out of the way peristome of described guiding parts to keep out of the way; It is characterized in that: in the described opening portion of described shutter device, be provided with the face of optical axis approximate vertical in rotary light-blocking member.
Technical scheme 5 described lens barrels involved in the present invention, be according to any one described lens barrel in the technical scheme 1 to 4, it is characterized in that: described light-blocking member between described shutter device and described light-blocking member, should present friction, at least a portion is that elasticity forms.
According to the present invention, can provide and to be installed in narrow positions, reach the shading formation of high-durability and can prevent effectively that harmful light from arriving the lens barrel and the camera of photographic element.
That is, the described lens barrel of the 1st technical scheme according to the present invention, it can be from at least a portion a plurality of lens combination the is built-in built-in state of accommodating after accommodating, that accommodate these a plurality of lens combination, to by at least a portion in described a plurality of lens combination being moved to a side to thing, make it to enter the photography state that to photograph, it comprises: shutter device, and it has the tripper of switch light path of photography; At least one lens supports frame, its support to constitute in the lens of described a plurality of lens combination and the lens combination at least any one; Guiding parts, it is set at the outside that is not described shutter device, but in the inboard field, is used for guiding at least one of described lens supports frame; And, in described shutter device, be formed with and insert the keep out of the way peristome of described guiding parts to keep out of the way; It is characterized in that: in the described opening portion of described shutter device, be provided with the face of optical axis approximate vertical in rotary light-blocking member, do not need to occupy more space, only with simple formation, just can prevent effectively that harmful light from arriving photographic element, the shading that can also reach high-durability constitutes.
In addition, according to the described lens barrel of the 2nd technical scheme of the present invention, in the described lens barrel of the 1st technical scheme, comprising the aperture diaphragm mechanism of the light beam that limits described light path of photography by described shutter device, is narrower, the more miniaturization in space that tripper and aperture diaphragm are occupied particularly in its formation.
According to the described lens barrel of the 3rd technical scheme of the present invention, in the described lens barrel of the 1st or the 2nd technical scheme, by with described shutter device thing one side is done next-door neighbour's configuration, at least one lens supports frame, also be provided with and insert the keep out of the way peristome of described guiding parts to keep out of the way, even in particular for the lens supports frame that exists the configuration of next-door neighbour's shutter device, also can reach shading effectively and constitute.
According to the described lens barrel of the 4th technical scheme of the present invention, in any one described lens barrel of the 1st to the 3rd technical scheme, cover the described peristome of keeping out of the way of described shutter device when the photography state by described light-blocking member, when from photography state to built-in when accommodating status transition, after rotating, the described peristome of keeping out of the way of described shutter device is opened, particularly in can be effectively and reach easily keeping out of the way the switch of peristome.
According to the described lens barrel of the 5th technical scheme of the present invention, in any one described lens barrel of the 1st to the 4th technical scheme, by described light-blocking member between described shutter device and described light-blocking member, should present friction, at least a portion is that elasticity forms, particularly in making relatively moving and the shift position stabilization with respect to the light-blocking member of shutter device.
According to the described lens barrel of the 6th technical scheme of the present invention, in any one described lens barrel of the 1st to the 5th technical scheme, the cam frame that is had the cam that is used for mobile described lens supports frame by described light-blocking member rotates, particularly in can with the action of lens supports frame that is in close proximity to shutter device and does the connection action mutually behind the interlock, come switch to keep out of the way peristome.
In addition, according to the described camera of the 7th technical scheme of the present invention, as the photography optical system, it is by comprising any one described lens barrel in the technical scheme 1 to 6, can not need to occupy more space, only with simple formation, just can prevent effectively that harmful light from arriving photographic element, the shading that can also reach high-durability constitutes.
Description of drawings
Shown in Figure 1 according to an embodiment of the invention, be in the longitudinal sectional drawing of the formation pattern of the lens barrel in the state of looking in the distance.
Be in the longitudinal sectional drawing of the formation pattern in the wide-angle state shown in Fig. 2 first half according to Fig. 1 embodiment, lens barrel; It shown in the Lower Half longitudinal sectional drawing of built-in formation pattern when accommodating state.
Shown in Fig. 3 first half according to the longitudinal sectional drawing of the formation pattern of the middle focal length state of Fig. 1 embodiment, lens barrel; It shown in the Lower Half the built-in longitudinal sectional drawing that comprises near the formation pattern of the part axis of guide when accommodating state.
Shown in Figure 4 is near the built-in transverse cross-sectional view of the formation pattern of the part light-blocking member when accommodating state according to Fig. 1 embodiment, lens barrel.
Shown in Figure 5 according to Fig. 1 embodiment, near the transverse cross-sectional view of formation pattern of part light-blocking member when lens barrel is the wide-angle state.
Shown in Figure 6 is near the transverse cross-sectional view of formation pattern of the part light-blocking member when looking in the distance state according to Fig. 1 embodiment, lens barrel.
Shown in Figure 7 is the longitudinal sectional drawing of the formation pattern of common lens barrel.
Shown in Figure 8 is the time diagram that frame transmits ordered mode in the CCD solid photographic element.
Fig. 9 is the figure according to other embodiments of the present invention, is that the longitudinal sectional drawing that gesture constitutes in the lens barrel behind the electromagnet, under the photography state is paid in the lens barrel elongation shown in the first half, and Lower Half is the longitudinal sectional drawing of the formation of lens barrel in the state of accommodating.
Shown in Figure 10 is the details drawing that Fig. 9 wants portion.
Shown in Figure 11 is in the embodiment of Fig. 9, after the lens barrel elongation electromagnet castration, the longitudinal sectional drawing of the formation of the lens barrel non-photography state under.
Shown in Figure 12 is the details drawing that Figure 11 wants portion.
Shown in Figure 13 is in the embodiment of Fig. 9, accommodates the longitudinal sectional drawing that lens barrel constitutes in the way.
Shown in Figure 14 is in the embodiment of Fig. 9, is used to illustrate that the 1st of the portion that wants of lens barrel rotates the decomposition side view of mobile frame and fixed frame.
Shown in Figure 15 is in the embodiment of Fig. 9, the 1st transverse cross-sectional view of rotating the configuration relation pattern of mobile frame and electromagnet when electromagnet is paid gesture.
Shown in Figure 16 is in the embodiment of Fig. 9, the 1st transverse cross-sectional view of rotating the configuration relation pattern of mobile frame and electromagnet during the electromagnet castration.
The module map of the 1st formation pattern according to other embodiments of the present invention, lens control device shown in Figure 17.
The module map of the 2nd formation pattern according to other embodiments of the present invention, lens control device shown in Figure 180.
Embodiment
Below, according to the embodiment of the present invention, come lens barrel of the present invention is elaborated with reference to drawing.
Fig. 1～shown in Figure 6 be an embodiment of the invention related, want portion's pie graph as photography with the lens barrel of optical system in as the digital camera of camera.Shown in Figure 1 is the longitudinal sectional drawing of the formation of the lens barrel in the state of looking in the distance.Being the formation of the lens barrel in the wide-angle state shown in Fig. 2 first half, is the built-in longitudinal sectional drawing separately that lens barrel constitutes when accommodating state shown in the Lower Half.The formation of the lens barrel when being the middle focal length state shown in Fig. 3 first half is the built-in longitudinal sectional drawing separately that comprises near the formation of the part lens barrel axis of guide when accommodating state shown in the Lower Half.Shown in Figure 4 is near the built-in transverse cross-sectional view of the formation of the part lens barrel light-blocking member when accommodating state.Near the transverse cross-sectional view of the formation of the part lens barrel light-blocking member when being the wide-angle state shown in Figure 5.Shown in Figure 6 is near the transverse cross-sectional view of the formation of the part of lens barrel light-blocking member when looking in the distance state.
The part that the lens barrel of Fig. 1～shown in Figure 6 is identical with common formation shown in Figure 7 represents that with identical symbol it comprises CCD solid photographic element 1, low-pass filter (LPF) 2, fixed frame 3, the 1st rotates mobile frame 4, the 1st directly advances mobile frame 5, the 2nd rotates mobile frame 6, the 2nd directly advances mobile frame 7, cam ring 8, the 3rd directly advances mobile frame 9, front decoration parts 10, the 1st lens combination 11, the 2nd lens combination 12, the 3rd lens combination 13, the 4th lens combination 14, shutter device 15 with aperture diaphragm mechanism, keep out of the way lens supports frame 16, carriage rotation axis 17, the axis of guide 18, substrate 19, fixed head 20 and light-blocking member 21.
At this moment, the 2nd lens combination 12 comprises the lens supports frame that supports it.When being built-in accommodating, the 3rd lens combination 13 removes the lens combination of keeping out of the way beyond the optical axis, it is supported by keeping out of the way lens supports frame 16, keeping out of the way lens supports frame 16 is that rotate at the center with carriage rotation axis 17, and the 3rd lens combination 13 is being moved on the optical axis and between the retreating position.The effect of the axis of guide 18 is, for example is positioned on the optical axis when the 3rd lens combination 13, and advances and retreat when mobile along optical axis, and the regulation guiding is made in the position of keeping out of the way lens supports frame 16.In the lens supports frame of the 2nd lens combination 12, offer when being used for built-in accommodating insert gathering sill 18 keep out of the way peristome 12a, 15 li of shutter devices, also offered insert gathering sill 18 when being used for built-in accommodating keep out of the way peristome 15a.
At this moment, in photographic element one side of shutter device 15, be provided with light-blocking member 21.Light-blocking member 21 is as Fig. 1～shown in Figure 3, and the flat light shielding part that constitutes main body has formed the plane that intersects vertically substantially with optical axis, and it is configured to connect airtight in plane shutter device 15, that intersect vertically substantially with the optical axis of photographic element one side.In the flat light shielding part of this light-blocking member 21, as shown in Figure 2, in the direction parallel, be formed with outstanding arm 21a that be provided with, the arm shape, at the recess that is formed with concave shape foremost of this arm 21a with optical axis.As Fig. 2 and Fig. 4～shown in Figure 6, its formation is in this recess, chimeric have a protuberance 8a that protrudes in cam ring 8 and form with flange shape, when cam ring 8 around optical axis when rotating, this rotational action is situated between by protuberance 8a and is communicated to arm 21a by recess, makes that light-blocking member 21 also is that rotate at the center with the optical axis.
The light shielding part of light-blocking member 21 such as Fig. 4～shown in Figure 6, its formation is to be essentially circular, in its neighboring, cover shutter device 15 keep out of the way peristome 15a and the 2nd lens combination (lens supports frame) 12 keep out of the way peristome 12a in, form the cut shape of a part of surrounding edge, thus form open these keep out of the way peristome 15a and 12a keep out of the way peristome 21b.
In photography state, as Fig. 5 and Fig. 6 wide-angle state and state of looking in the distance shown in respectively, the edge of the light shielding part of light-blocking member 21 covered shutter device 15 keep out of the way peristome 15a and the 2nd lens supports frame (the 2nd lens combination) 12 keep out of the way peristome 12a.When from these photography states when the built-in state of accommodating shown in Figure 4 moves, rotate light-blocking member 21, because its position of keeping out of the way peristome 21b is corresponding to keeping out of the way peristome 15a and 12a, the axis of guide 18 can be by light-blocking member 21 keep out of the way peristome 21b, what enter shutter device 15 and the 2nd lens supports frame 12 keeps out of the way peristome 15a and 12a, thereby excessively to the built-in state of accommodating.
Just can prevent thus from the incident light of the 1st lens combination 11, arrive the CCD solid photographic element by the part beyond the aperture diaphragm opening of shutter device 15.Also have, in this embodiment, can move integratedly with respect to optical axis,, along equally spaced substantially 3 places on the circumference carving of claw-like is set and closes pawl 15b as Fig. 4～ground shown in Figure 6,15 li of shutter devices in order to make shutter device 15 and light-blocking member 21.In addition,, in light-blocking member, light-blocking member 21 is adjacent in the position of shutter device 15, is formed with the excision portion of closing pawl 15b of carving of keeping out of the way though clearly do not show.
Therefore, by such formation, can reach such lens barrel, be that it can prevent from the light of the 1st lens combination 11 incidents, lens supports frame by the 2nd lens combination 12 keep out of the way peristome 12a and shutter device 15 keep out of the way peristome 15a positions such, beyond the shutter device 15 aperture diaphragm openings, the reflection back arrives CCD photographic element 1 in the inside diameter 8b of cam ring 8.In addition, though more than be to use lens barrel involved in the present invention to come the explanation of doing as the digital camera of camera constituting, for other cameras such as portable type information terminal that possess camera-enabled, the present invention also is suitable for.
Next, to the related lens barrel of other embodiments of the present invention connection, elaborate with reference to diagram.
The camera of digital camera etc. generally possesses photographic element, is used for a plurality of lens of imaging in photographic element and is used to make a plurality of lens to make the lens barrel that moves, comprise lens driver at assigned position.In recent years, in miniature camera, mostly adopt be by: through rotating the rotary cylinder more than 1 of advancing and retreat on the optical axis direction, with directly advance guide cylinder without rotating more than 1 what advance and retreat on the optical axis direction, with without rotate, support of lens constitutes at the lens supports tube more than 1 of advancing and retreat on the optical axis direction etc., shorten when not using and accommodate, extend along optical axis during use, with each lens supports in the position of regulation to obtain the lens barrel of regulation focal length.
Also have,, tend in the optical axis contraposition, need higher precision along with the development of miniaturization.In order to improve this precision, be not only the precision of lens supports frame and lens, the optical axis position deviation for the rotary cylinder that drives the lens supports frame also is necessary to guarantee its high precision.Can move owing to have space (gap) between rotary cylinder and the object that relatively moves,, will move bad or useless energy loss if when making this gap turn narrow in order to improve precision.More seriously, camera just must make lens barrel make high-speed mobile from the built-in state of accommodating to photography state in order to enter photography state at once behind power initiation, if with gap turn narrow, will increase frictional resistance, thereby be difficult to reach high-speed mobile.
In order to solve the optical axis swing of similar lens, in supporting, the loading and unloading of attachment lens used magnet.In addition, also can consider in the lens supports frame, magnet to be set, make that it is that the support of lens carriage can move along optical axis direction to being arranged on, the sucking action of the metal cap generation magnet of the motor in the guiding means, with prevent with the direction of optical axis intersection in the swing that takes place, and make action sliding suitable.Yet, in the method because the lens supports frame is in the state of being paid gesture always, so can also need to consume electric power in the place that does not need to aim at lens axis.In addition, this method owing to the magnet that is a place is stressed, is shaken so can not remove effectively when the lens supports frame rotates.
Therefore, the related lens barrel of present embodiment is when photography state, attractive force by magnet makes rotary cylinder be paid gesture, so that in photography state, can aim at optical axis accurately, and the action when non-photography state can make the attractive force of magnet disappear, thus the loss of the electric power when being able to effectively to prevent to move.
That is the lens barrel of the 1st form that this embodiment is related possesses:
By the lens combination that can photograph in the imaging of photographic plane power; With
Support described lens combination at least one, more than one lens supports frame; With
By supporting described lens frame and rotation, so that the lens that described lens supports frame can move in the assigned position of optical axis direction drive tube; With
Support the stationary magazine creel that described lens combination, described lens supports frame and described lens drive frame;
Described lens drive tube and are rotating so that have following feature in the formation of described lens supports frame lens barrel that can advance and retreat, that have an above rotary cylinder:
Possessing the body of being magnetic in the back quadrate part of the described stationary magazine creel that described stationary magazine creel supported, the parts that magnetic force takes place are set at least 2 places of the front part of described stationary magazine creel, with near the parts that described magnetic force takes place, form described rotary cylinder is paid gesture because of magnetic force the gesture face of paying;
When described rotary cylinder is forwards mobile, with the perpendicular direction of optical axis direction in described magnetic in produced attractive force, and when making that because of attractive force described rotary cylinder is extremely paid the gesture face by pair gesture, the central shaft of photographic plane and the central shaft of rotary cylinder are consistent.
The lens barrel of the 1st form only when rotary cylinder forwards moves, because of magnetic force produces attractive force, and is paid gesture by rotary cylinder and is aimed at optical axis to paying the gesture face.
The lens barrel of the 2nd form that this embodiment is related has following feature according to the configuration of the described lens barrel of above-mentioned the 1st form:
Till before described rotary cylinder can make lens barrel from the shortening position to photography, when rotating, move along optical axis direction, only rotate in photography,, make attractive force in photography, reach maximum afterwards by the parts of described magnetic and generation magnetic force.
The lens barrel of the 2nd form is needing in the photography of optical axis alignment, produce attractive force by magnetic force, between shortening position that does not need optical axis alignment and photography, do not produce the attractive force of magnetic force, reduce the energy loss that is used to rotate rotary cylinder with this.
The lens barrel of the 3rd form that this embodiment is related has following feature according to the above-mentioned the 1st or the 2nd described lens barrel of form:
The parts that produce described magnetic force are made of magnet.
The lens barrel of the 3rd form can carry out high-precision optical axis alignment by parts at a low price.
The lens barrel of the 4th form that this embodiment is related has following feature according to the above-mentioned the 1st or the 2nd described lens barrel of form:
The parts that produce described magnetic force are made of electromagnet.
The lens barrel of the 4th form can simply be controlled only carrying out optical axis alignment in needs, and when not needing optical axis alignment, can suppress energy loss.
The lens barrel of the 5th form that this embodiment is related has following feature according to the described lens barrel of above-mentioned the 4th form:
Only when photography, switch on to produce magnetic force.
The lens barrel of the 5th form only carries out optical axis alignment when photography state, in other states following times, hold the gap by making rotary cylinder, the energy loss that suppresses to move.
The cameras such as camera of the 6th form that this embodiment is related have following feature:
It comprises according to any one described lens barrel in above-mentioned the 1st～the 5th form.
The camera of the 6th form can obtain high image quality, and suppresses energy loss.
Next the embodiment with the related lens barrel of other embodiments of the present invention connection is elaborated.
Fig. 9～shown in Figure 16 be employed in the digital camera of camera, want portion as photography with the formation of the lens barrel of optical system.Be lens barrel elongation shown in Fig. 9 first half, to the formation that electromagnet is paid the lens barrel in the photography state after the gesture, be the built-in longitudinal sectional drawing separately that lens barrel constitutes when accommodating state shown in the Lower Half.Figure 10 be Fig. 9 want portion's details drawing.Shown in Figure 11 be lens barrel elongation, with the longitudinal sectional drawing of the formation of the lens barrel in the non-photography state after the electromagnet castration.Figure 12 be Figure 11 want portion's details drawing.Shown in Figure 13 is the longitudinal sectional drawing of accommodating the formation of lens barrel in the way.Shown in Figure 14 is to be used to illustrate that the 1st of the portion that wants of lens barrel rotates the decomposition side view of mobile frame and fixed frame.Shown in Figure 15 is electromagnet the 1st transverse cross-sectional view of rotating the configuration relation pattern of mobile frame and electromagnet when paying gesture.The 1st transverse cross-sectional view of rotating the configuration relation pattern of mobile frame and electromagnet when being the electromagnet castration shown in Figure 16.
Fig. 9～lens barrel part identical with formation shown in Figure 1 shown in Figure 16 represent with identical symbol, it comprise CCD solid photographic element 1, low-pass filter (LPF) 2, fixed frame the 3, the 1st rotate mobile frame the 4, the 1st directly advance mobile frame the 5, the 2nd rotate mobile frame the 6, the 2nd directly advance mobile frame 7, cam ring the 8, the 3rd directly advance mobile frame 9, front decoration parts the 10, the 1st lens combination the 11, the 2nd lens combination the 12, the 3rd lens combination the 13, the 4th lens combination 14, have aperture diaphragm mechanism shutter device 15, carve dowel pin 30, magnetic ring 31, electromagnet 32 and link 33.
Basic comprising in Fig. 9～embodiment shown in Figure 16 is, the 1st lens combination 11 is supported by directly advancing mobile frame 9 with the 1st lens supports frame the incorporate the 3rd, the 3rd directly advance mobile frame 9 be situated between by be arranged on the 2nd and rotate cam path in mobile frame 6 inner peripheral surfaces and carve the 3rd cam follower 9a that directly advances mobile frame 9 that closes mutually, rotate mobile frame 6 by the 2nd and supported.The 3rd directly in the inner peripheral surface of mobile frame 9, directly advancing mobile frame 7 with respect to the 2nd, can directly to advance to carry out movably groove chimeric, the 2nd directly advance mobile frame 7 can with the 2nd rotate mobile frame 6 and relatively rotate, and can be integratedly along optical axis direction movably, with the vertical face of optical axis direction in the keyway 6a and the 2nd of the mobile frame 6 of the 2nd rotation 7a of key portion that directly advances mobile frame 7 carve mutually and close.Thus, the 3rd directly advances mobile frame 9 when the mobile frame 6 of the 2nd rotation rotates, and can move along being arranged on the 2nd cam path that rotates in mobile frame 6 inner peripheral surfaces.The 2nd rotates mobile frame 6 is arranged on the 1st directly in the bung flange 5b in the inner peripheral surface of mobile frame 5 because of its bung flange 6b is fitted to, the 2nd directly advance mobile frame 7 can be along optical axis direction directly advance movably, the 2nd directly advance mobile frame 7 directly advance the 7b of key portion be fitted to be arranged on directly in the inner peripheral surface of mobile frame 5 directly in gathering sill 5b.
The 1st rotates mobile frame 4 closes and is able to and the 2nd rotates mobile frame 6 and do to rotate integratedly by carving carving of dowel pin 30, the 1st directly advances mobile frame 5 in order can be on optical axis direction to move integratedly and to relatively rotate, with the perpendicular face of optical axis direction in the 1st keyway 4a that rotates mobile frame 4 carve and be incorporated into the 1st directly in the 6a of key portion of mobile frame 6.Thus, the 1st rotates mobile frame 4 by rotating, and the 2nd rotates mobile frame 6 along being arranged on the 1st bung flange in the internal diameter of mobile frame 5 directly, advances and retreat when rotating, the 2nd does not directly rotate mobile frame 6 is made one in optical axis direction rotation with the 2nd advance mobile frame 7, and it can directly advance.The 1st rotates mobile frame 4 and the inner peripheral surface of the fixed frame 3 that supports CCD photographic element 1, and to make bung flange chimeric, the 1st directly advance mobile frame 6 directly in 6b of key portion and fixed frame 3 inner peripheral surfaces, carve mutually and close along the set gathering sill 3a that directly advances of optical axis direction.3 li of fixed frames, the motor and a plurality of gear that drive the mobile frame 4 of the 1st rotation be equipped with, it is carved mutually with the mobile frame 4 of the 1st rotation and closes.Thus, be situated between in the rotation that comes from motor and rotate the 1st by gear and rotate mobile frame 4, be situated between and directly advance mobile frame the 5, the 2nd by the 1st and rotate mobile frame 6 and the 2nd and directly advance mobile frame 7, can make and support the 3rd of the 1st lens combination 11 and directly in optical axis direction, advance and retreat advance mobile frame 9.
The 3rd lens combination 13 and the 4th lens combination 14 are supported by the carriage rotation axis 17 that is arranged on 3 li of fixed frames and the axis of guide 18, be that the center rotates in the action to support rotation axis 17, can do to advance and retreat in optical axis direction along the axis of guide 18 and move.
The 1st rotate mobile frame 4 and the 1st directly advance mobile frame 5 in order in optical axis direction, to advance and retreat with respect to fixed frame 3, the outer diameter part and the 1st of the bung flange of the mobile frame 4 of the 1st rotation directly enters directly advancing between the key portion of mobile frame 5 and keeps certain clearance.By this gap the rotation and the translatory movement that rotate mobile frame are carried out with being able to the noenergy loss.
At this moment, rotate in the basic end of mobile frame 4 the 1st, be provided with the ring component 31 of magnetic, 3 li of fixed frames, rotate mobile frame 4 when producing when the 1st, with the 1st to rotate the ring component 31 of mobile frame 4 relative and to be the center with the optical axis roughly be provided with 2 blocks of electromagnet 32 in 120 ° the angle intervals position to photography.When electromagnet 32 is paid gesture, rotate between the ring component 31 of mobile frame 4 and the electromagnet 32 and exist electromagnetic force, make with ring component 31 between the effect of generation attractive force.At this moment, between the ring component 31 that rotates mobile frame 4 and 2 blocks of electromagnet 32, be provided with 2 links 33 that are connected in electromagnet one side.This moment, electromagnet 32 was paid gesture, when being situated between the state that is adsorbed by link 33, so that the 1st rotate the central shaft of mobile frame 4 and the optical axis of the 3rd lens combination 13 and the 4th lens combination 14 as one man disposes link 33.
In sum, rotate mobile frame 4 when being in photography state when the 1st, be pressed against in electromagnet 32 1 sides, just can under photography state, aim at optical axis accurately by attractive force because of the magnetic force that comes from electromagnet 32; Under non-photography state,, just can prevent with the energy loss that is used as power owing to electromagnet 32 is lost attractive force from magnetic force by castration.
Below, for the related lens barrel of other embodiments of the present invention connection, elaborate with reference to diagram.
In cameras such as digital camera, the development along with the high performance of photographic lenss such as the zoom lens that can change focal length and the desired miniaturization of user etc. buffer unit occurred being provided with to construct the vibration countermeasure in lens barrel.Yet in this case, the duplex that can produce because of employing picture frame and picture frame guard block makes shape become big problem.In addition, when external force is arranged, can move such structure, the installation of picture frame guard block and the buffering parts very difficulty that becomes in order to take buffer unit when additional.
On the other hand, be in for producing photography may state following lens barrel, after the cameraman pushes unintentionally, make lens barrel to accommodating side shifting, and the thing of damage lens barrel also has generation.Also have, vibrate lens barrel unintentionally, generation is also arranged in the thing that takes place just to photograph under the focusing condition of poor.
For such problem, present embodiment provides the breakage that both can prevent lens barrel, again lens control device and the camera of assembling easily.In addition, according to the lens control device and the camera of present embodiment, also can under because of generations such as vibration focusing condition of poor, restore automatically.
That is the lens control device of the 1st form that present embodiment is related has following feature:
Be used for the lens control device that control possesses the lens barrel of d.c. motor (it is as the drive source that drives lens and lens barrel frame), what carry out when stopping described d.c. motor is instantaneous interrupt control, does not also cut off energising afterwards and proceeds instantaneous interrupt control.
The lens control device of the 2nd form that present embodiment is related has following feature:
Comprising, as the d.c. motor of the drive source that is used to drive lens and lens barrel frame; With the photodetector that possesses the rotation that is used to detect described d.c. motor and the lens barrel of light-blocking member; With central calculation processing apparatus; In the lens control device of motor controlling and driving means,
Drive order at the d.c. motor that is not coming from described central calculation processing apparatus, and when detecting the rotation of described motor, just carry out the instantaneous interrupt control of certain hour by described detecting device.
The lens control device of the 3rd form that present embodiment is related has following feature:
Comprising, as the d.c. motor of the drive source that is used to drive lens and lens barrel frame; With the photodetector that possesses the rotation that is used to detect described d.c. motor and the lens barrel of light-blocking member; With central calculation processing apparatus; In the lens control device of motor controlling and driving means,
Drive order at the d.c. motor that is not coming from described central calculation processing apparatus, and when detecting the rotation of described motor, after described d.c. motor is carried out the instantaneous interrupt control of certain hour, described lens barrel is made reset operation by described detecting device.
The camera of the camera of the 4th form that present embodiment is related etc. has following feature:
Comprising, as the d.c. motor of the drive source that is used to drive lens and lens barrel frame; With the photodetector that possesses the rotation that is used to detect described d.c. motor and the lens barrel of light-blocking member; With central calculation processing apparatus; With motor controlling and driving means; Be used for detecting the rolling momentum and rock the camera of detection means,
When the described detection means of rocking when detecting, just described d.c. motor is carried out the instantaneous interrupt control of certain hour than the big value of a certain threshold value.
The camera of the camera of the 5th form that present embodiment is related etc. has following feature:
Comprising, as the d.c. motor of the drive source that is used to drive lens and lens barrel frame; With the photodetector that possesses the rotation that is used to detect described d.c. motor and the lens barrel of light-blocking member; With central calculation processing apparatus; With motor controlling and driving means; Be used for detecting the rolling momentum and rock the camera of detection means,
When the described detection means of rocking when detecting, after described d.c. motor is carried out the instantaneous interrupt control of certain hour, described lens barrel is made reset operation than the big value of a certain threshold value.
Such lens control device and camera, neither can cause cost increases, even and when the cameraman pushes unintentionally, also can prevent breakage.
Next the embodiment with the related lens control device of other embodiments of the present invention connection is elaborated.
That is, constitute as shown in figure 17 with the 1st of the related lens control device of other embodiments of the present invention connection.Lens control device among Figure 17 possesses lens barrel 50 is arranged, central calculation processing apparatus 61 that is motor drive means 62.Lens barrel 50 comprises d.c. motor 51, lens driving means 52 and pick-up unit 53.
For example, producing to leaning on most by the photography possibility state of photography body, as when being in the photography state of the side of looking in the distance, when the cameraman pushes lens barrel 50 with hand unintentionally, because the cam of lens barrel tilts, rotating force is situated between from the lens barrel frame and is conveyed to d.c. motor 51 by gear mechanism, causes the rotation of d.c. motor 51 and makes the lens barrel frame to accommodating side shifting.
Here, d.c. motor 51 by detected the pick-up unit 53 of its revolution detection means that photodetector constituted by shading means in the output shaft that is arranged on d.c. motor 51 and being used to, can detect the rotation of d.c. motor when some rotations.Thus, when detecting the rotation of motor 51, central calculation processing apparatus (CPU) 61 sends the order of d.c. motor 51 being done instantaneous interruption, and motor drive means 62 just can be carried out short circuit between the terminal of d.c. motor 51.Can know by constituting of d.c. motor 51, when the terminal of d.c. motor 51 is in free state or during by short-circuit condition, significantly, torque during by short-circuit condition, that be used to d.c. motor 51 is rotated wants big.
Therefore, when the rotation detection means of d.c. motor 51 detects rotation, between the terminal of motor 51 instantaneous short-circuit taking place, makes lens barrel increase to accommodating the needed strength of side shifting, thereby can prevent automatically to accommodating moving of side.So just can prevent the breakage of lens barrel.In addition, when cameraman's hand is pushed a little,, after the instantaneous interruption of d.c. motor 51, lens barrel 50 is returned entopic reset operation, can also prevent the bad generation of focusing by carrying out because focusing position also can depart from.
In addition, constitute as shown in figure 18 with the 2nd of the related lens control device of other embodiments of the present invention connection.Lens control device among Figure 18, the part identical with Figure 17 represent with the same symbol, and what also be useful on swing such as detection hand wobble outside lens barrel 50, central calculation processing apparatus 61, motor drive means 62 rocks detection means 71.At this moment lens barrel 50 also possesses d.c. motor 51, lens driving means 52 and pick-up unit 53 is arranged.
As shown in figure 18, rock in the camera of revisal carrying out hand wobble etc., possess be used to detect the rolling momentum rock detection means 71.Because the situation of common rolling momentum and meet with situation when impacting, it is very big poor to take place in the output valve of rocking detection means 71, just can do as judging, if be not to be judged as to rock just when promptly surpassing certain threshold value, is impacted but be judged as.Because it is higher that lens barrel 50 is subjected to impacting the bad possibility of back generation focusing, detect when a certain threshold value is above when rocking detection means 71, by between the terminal of d.c. motor 51, carrying out short circuit, can also prevent moving of lens barrel frame, afterwards, by lens barrel 50 is made reset operation, just can avoid the focusing condition of poor.
In addition, the present invention is not limited to aforesaid each embodiment, and in the scope of technological thought of the present invention, except that shown in aforementioned each embodiment, it also is conspicuous making suitable gained after changing from aforementioned each embodiment.Also have, the quantity of aforementioned component parts, position, shape etc. are not limited to aforementioned each embodiment, when enforcement is of the present invention, can use suitable quantity, position, shape etc.
The basis of present patent application and priority request be on September 19th, 2006, at the Japanese patent application JP2006-253601 of Jap.P. office application, its full content draws the do combination at this.
Claims (17)
1. lens barrel, it can be from at least a portion a plurality of lens combination the is built-in built-in state of accommodating after accommodating, that accommodate these a plurality of lens combination, to by at least a portion in described a plurality of lens combination being moved to a side to thing, make it to enter the photography state that can photograph, it comprises:
Shutter device, it has the tripper of switch light path of photography;
At least one lens supports frame, its support to constitute in the lens of described a plurality of lens combination and the lens combination at least any one;
Guiding parts, it is set at the outside that is not described shutter device but in the inboard field, is used for guiding at least one of described lens supports frame; And,
In described shutter device, be formed with and insert the keep out of the way peristome of described guiding parts to keep out of the way;
It is characterized in that:
Keep out of the way in the peristome the described of described shutter device, be provided with the face of optical axis approximate vertical in rotary light-blocking member.
2. lens barrel according to claim 1 is characterized in that:
Described shutter device comprises the aperture diaphragm mechanism of the light beam that limits described light path of photography.
3. lens barrel according to claim 1 and 2 is characterized in that:
With thing one side being done at least one lens supports frame of next-door neighbour's configuration of described shutter device, also be provided with and insert the keep out of the way peristome of described guiding parts to keep out of the way.
4. lens barrel according to claim 1 and 2 is characterized in that:
Described light-blocking member covers the described peristome of keeping out of the way of described shutter device when photography state, when when accommodating status transition, after rotating the described peristome of keeping out of the way of described shutter device being opened to built-in from photography state.
5. lens barrel according to claim 1 and 2 is characterized in that:
With thing one side being done at least one lens supports frame of next-door neighbour's configuration of described shutter device, also be provided with and insert the keep out of the way peristome of described guiding parts to keep out of the way;
Described light-blocking member covers the described peristome of keeping out of the way of described shutter device when photography state, when when accommodating status transition, after rotating the described peristome of keeping out of the way of described shutter device being opened to built-in from photography state.
6. lens barrel according to claim 1 and 2 is characterized in that:
Described light-blocking member should present friction between described shutter device and described light-blocking member at least a portion is that elasticity forms.
7. lens barrel according to claim 1 and 2 is characterized in that:
With thing one side being done at least one lens supports frame of next-door neighbour's configuration of described shutter device, also be provided with and insert the keep out of the way peristome of described guiding parts to keep out of the way;
Described light-blocking member should present friction between described shutter device and described light-blocking member at least a portion is that elasticity forms.
8. lens barrel according to claim 1 and 2 is characterized in that:
Described light-blocking member covers the described peristome of keeping out of the way of described shutter device when photography state, when when accommodating status transition, after rotating the described peristome of keeping out of the way of described shutter device being opened to built-in from photography state;
Described light-blocking member should present friction between described shutter device and described light-blocking member at least a portion is that elasticity forms.
9. lens barrel according to claim 1 and 2 is characterized in that:
The cam frame that described light-blocking member is had the cam that is used for mobile described lens supports frame rotates.
10. lens barrel according to claim 1 and 2 is characterized in that:
With thing one side being done at least one lens supports frame of next-door neighbour's configuration of described shutter device, also be provided with and insert the keep out of the way peristome of described guiding parts to keep out of the way;
The cam frame that described light-blocking member is had the cam that is used for mobile described lens supports frame rotates.
11. lens barrel according to claim 1 and 2 is characterized in that:
Described light-blocking member covers the described peristome of keeping out of the way of described shutter device when photography state, when when accommodating status transition, after rotating the described peristome of keeping out of the way of described shutter device being opened to built-in from photography state;
The cam frame that described light-blocking member is had the cam that is used for mobile described lens supports frame rotates.
12. lens barrel according to claim 1 and 2 is characterized in that:
Described light-blocking member should present friction between described shutter device and described light-blocking member at least a portion is that elasticity forms;
The cam frame that described light-blocking member is had the cam that is used for mobile described lens supports frame rotates.
13. a camera is characterized in that:
Use optical system as photography, it comprises claim 1 or 2 described lens barrels.
14. a camera is characterized in that:
Use optical system as photography, it comprises claim 1 or 2 described lens barrels;
With thing one side being done at least one lens supports frame of next-door neighbour's configuration of described shutter device, also be provided with and insert the keep out of the way peristome of described guiding parts to keep out of the way.
15. a camera is characterized in that:
Use optical system as photography, it comprises claim 1 or 2 described lens barrels;
Described light-blocking member covers the described peristome of keeping out of the way of described shutter device when photography state, when when accommodating status transition, after rotating the described peristome of keeping out of the way of described shutter device being opened to built-in from photography state.
16. a camera is characterized in that:
Use optical system as photography, it comprises claim 1 or 2 described lens barrels;
Described light-blocking member should present friction between described shutter device and described light-blocking member at least a portion is that elasticity forms.
17. a camera is characterized in that:
Use optical system as photography, it comprises claim 1 or 2 described lens barrels;
The cam frame that described light-blocking member is had the cam that is used for mobile described lens supports frame rotates.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP253601/06 | 2006-09-19 | ||
| JP2006253601A JP5028054B2 (en) | 2006-09-19 | 2006-09-19 | Lens barrel and imaging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101149461A CN101149461A (en) | 2008-03-26 |
| CN100582848C true CN100582848C (en) | 2010-01-20 |
Family
ID=39250069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710154789A Expired - Fee Related CN100582848C (en) | 2006-09-19 | 2007-09-19 | Lens barrel and photography device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5028054B2 (en) |
| CN (1) | CN100582848C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5006576B2 (en) | 2006-05-26 | 2012-08-22 | 株式会社リコー | Lens barrel, camera using this lens barrel, digital camera, portable information terminal device, and image input device |
| JP4841336B2 (en) | 2006-07-04 | 2011-12-21 | 株式会社リコー | Lens barrel and camera |
| US20120075518A1 (en) * | 2010-09-29 | 2012-03-29 | Hoya Corporation | Imaging unit |
| JP5865027B2 (en) * | 2011-11-16 | 2016-02-17 | キヤノン株式会社 | Lens apparatus and imaging apparatus having the same |
| JP6897712B2 (en) * | 2019-03-29 | 2021-07-07 | カシオ計算機株式会社 | Lighting device and imaging device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001242365A (en) * | 2000-02-25 | 2001-09-07 | Asahi Optical Co Ltd | Stray light preventing structure for lens barrel |
| JP2004117402A (en) * | 2002-09-20 | 2004-04-15 | Ricoh Co Ltd | Camera |
| JP4605439B2 (en) * | 2004-04-19 | 2011-01-05 | ソニー株式会社 | Retractable lens barrel and imaging device |
| JP4583102B2 (en) * | 2004-08-05 | 2010-11-17 | 日東光学株式会社 | Tube |
-
2006
- 2006-09-19 JP JP2006253601A patent/JP5028054B2/en not_active Expired - Fee Related
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2007
- 2007-09-19 CN CN200710154789A patent/CN100582848C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101149461A (en) | 2008-03-26 |
| JP5028054B2 (en) | 2012-09-19 |
| JP2008076581A (en) | 2008-04-03 |
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Granted publication date: 20100120 Termination date: 20190919 |