CN100445861C - Optical unit and imaging device comprising optical unit - Google Patents
Optical unit and imaging device comprising optical unit Download PDFInfo
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- CN100445861C CN100445861C CNB200380106593XA CN200380106593A CN100445861C CN 100445861 C CN100445861 C CN 100445861C CN B200380106593X A CNB200380106593X A CN B200380106593XA CN 200380106593 A CN200380106593 A CN 200380106593A CN 100445861 C CN100445861 C CN 100445861C
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Abstract
A collapsible lens mount optical unit comprises a fixed lens mount, a lens mount movable along the optical axis with respect to the fixed lens mount, an infrared ray intercepting filter interposed between the fixed lens mount and the lens mount. The collapsible lens mount optical unit further comprises a move-aside mechanism. When the lens mount is retracted and made to approach the infrared ray intercepting filter, the move-aside mechanism moves aside the infrared intercepting filter out of the optical axis in a direction perpendicular to the optical axis. The lens can be accommodated in a position on the optical axis after the infrared intercepting filter is moved.
Description
Technical field
The present invention relates to scalable optical unit that optical system can move and image pick-up device between its working position and its retracted position, such as digital camera and digital camera with this optical unit.Particularly, the present invention relates to such optical unit and image pick-up device with this optical unit, wherein by when stretching optical unit, optical filter is withdrawed from the direction with its optical axis intersection, for example the camera lens frame indentation of amasthenic lens is owing to withdraw from the space of formation, so that the retractable lens shape is thinner, and in firmly stretch operation or during at flexible optical unit under the idle abnormal conditions of drawing-out mechanism, the optical filter that is on the optical axis is forced to withdraw from optical axis of user.
Background technology
In recent years, to such as the improvement of the portability of the image pick-up device of digital camera and digital camera and operability among demand, whole device size is pursued miniaturization, and wherein, the camera lens of used optical system and lens barrel also are miniaturized in image pick-up device.In addition, people also press for the picture of clapping and have high-quality and the high density pixel, so that such situation occurs, that is, become big even form the Lens of optical system, also need by dwindling driving mechanism the lens barrel in the optical system to be diminished.
In addition, about being used as so-called retractable lens,, then require to make the size of camera lens little slim body from the aspect that is easy to carry such as the image pick-up device of digital camera and digital camera.And, in image pick-up device such as digital camera and digital camera, solid imaging element such as CCD, CMOS picks up the image of the object that forms by the lens barrel in the optical system, convert the light that is picked up the electric signal of output to by photoelectric method, and produce numerical data corresponding to the image of object.
In this case, because solid imaging elements such as CCD, CMOS carry out geometry chromatic dispersion sampling, so when image pick-up device is taken the geometric scheme (hair, candy strip, tiling pattern etc.) thinner than its periodic arrangement, for example false colour signal or moir will appear, cover with a kind of discordant sensation to picture, this is very inconvenient.
In order to eliminate unnecessary high frequency composition, be by means of the optics low pass filter traditionally, increase fuzzy (blur).As for the optics low pass filter, people propose and use various " bluring " member that has utilized diffraction phenomena, birefringence, spherical aberration etc.
In addition,, and infrared ray all had high sensitivity usually, just can not restore correct color so do not eliminate unnecessary infrared ray because solid imaging element such as CCD or CMOS be not only to visible light.For eliminating unnecessary infrared ray, adopted cutoff filter, this cutoff filter has by not only absorbing infrared ray, and absorbs light from orange to redness, the function of sequentially carrying out the color rendition of long wavelength's light along the absorption curve of gradual change.About cutoff filter, except that the absorption-type of using glass or plastics, use the type of the reflected infrared of lighttight multilayer film in addition.
Traditional image pick-up device such as digital camera and digital camera uses cutoff filter, so that obtain aforesaid height color reducibility (for example referring to Patent Document 2).It is designed so that this cutoff filter can be arranged on the light path, and can remove from light path.In addition, by using infrared light etc. with the infrared radiation object, even in the very black environment that the common image pick-up device such as digital camera and digital camera can't be taken pictures, do not use its yet can take pictures (" shooting function at night ") of flashlamp or light fixture.
Except that above-mentioned shooting function at night (photographic IR function), applicant of the present invention has developed such function (" function of finding a view night ") recently, wherein in focusing, cutoff filter is arranged on the optical axis of camera lens or departs from optical axis, obtain to find a view in the dark and with the compatibility between the natural tone document image.This is a kind of like this photography, wherein, when finding a view, withdraws from or withdraw from optical axis by making cutoff filter, realizes accurately finding a view under the photographic IR state; In the focusing stage, cutoff filter is turned back to be used for focusing on the optical axis, when photography (record), drive the picture that taking photos by using flashlights has correct color rendition then.
Fig. 9 is that camera lens that digital camera is shown is not used and the skeleton view of the outward appearance the during state of indentation, and described state refers to that specifically lens barrel is contracted to the state when being in the indentation state.Figure 10 be illustrate camera in use and lens barrel be elongated state the time the skeleton view of outward appearance, described state specifically refers to the wide-angle state or the state of dolly-out,ing dolly-back.Figure 11 A, 11B and 11C show the outward appearance that is included in the retractable lens among the optical unit; Figure 11 A is the skeleton view that contraction state is shown; Figure 11 B illustrates its wide-angle state; Figure 11 C illustrates its state of dolly-out,ing dolly-back.
In addition, Figure 12 A, 12B and 12C illustrate the traditional retractable lens that is included among the optical unit; Figure 12 A is the cut-open view that is illustrated in camera lens retracted position when not using; Figure 12 B is the cut-open view of wide-angle position; Figure 12 C is the cut-open view of position of dolly-out,ing dolly-back.Also have, Figure 13 is the decomposition diagram of the retractable lens shown in Figure 12 A-12C.
The primary structure of digital cameras at first, is described with reference to Fig. 9 and 10.The fuselage of label 1 expression digital camera, the image pickup camera lens part of label 2 expression telescopics, it is positioned at the front surface of a side of fuselage 1.Under the indentation state of Fig. 9, the preceding camera lens surface of lens barrel 3 protection image pickup camera lens parts 2.Be provided with viewing lens 4, flashlamp 5 and be used to detect the automatic focusing fill-in light receiving unit 6 of the distance of object in the front surface side of fuselage 1.Label 7 expression viewfinders; Label 8 expression shutter release buttons; Label 9 expressions are used to change the knob of pattern.
Next, describe structure in detail with reference to Figure 11 A to 11C and Figure 12 A to 12C as the image pickup camera lens part 2 of scalable optical unit.At the scalable optical unit shown in Figure 12 A to 12C is can not be in the type (type that does not promptly have the shooting function at night) of night photography.
Above-mentioned cam ring 12 comprises that the gear 14a by gear unit 14 drives with gear parts 12c that rotates and a plurality of cam pin 12d that cooperate with the cam path 15a of set collar 15 in the inner periphery of set collar 15.Cam ring 12 is by molded the forming of black polycarbonate resin of for example containing glass fibre, has intensity and light covers characteristic.The first cam path 12a of cam ring 12 and the second cam path 12b make the first and second set of shots frames 10 and 13 move on its optical axis L direction along predetermined curve, are used for zoom (zooming) operation.
Set collar 15, catch driving mechanism 20 and gear unit 14 are fixed on the lens barrel 17 of back.In addition, in the lens barrel 17 of back, comprise optical filter 22 usefulness caulking gums 23 stationary positioned of optics low pass filter and cutoff filter, caulking gum 23 is supporting part 21 places flexibly to promote optical filter facing to the 3rd set of shots frame 18.And, in the lens barrel 17 of back, be provided with and be fixed on after the optical filter 22 such as the solid imaging element 24 of CCD, CMOS etc.
Then, will the operation of above-mentioned image pickup camera lens part 2 be described.
From the indentation state of Figure 12 A to the operation of the wide-angle position of Figure 12 B, by the gear 14a that drives such as the drive source of DC motor with the gear parts 12c meshed gears unit 14 of cam ring 12, simultaneously towards movement of objects, at this moment cam pin 12d rotates along the cam path 15a of set collar 15 along optical axis L for cam ring 12.At this moment, directly guide ring 16 integrally moves forward for 12 one-tenth with cam ring, as shown by arrow A.
Simultaneously, the first set of shots frame 10 moves forward, and as shown by arrow B, cam pin 10a moves along the first cam path 12a of cam ring 12 and the gathering sill 16a of direct guide ring 16.Meanwhile, the second set of shots frame 13 moves forward, and as shown by arrow C, cam pin 13b moves along the second cam path 12b of cam ring 12 and the gathering sill 16b of direct guide ring 16.The result of aforesaid operations is that the first set of shots frame 10 and the second set of shots frame 13 are placed in the optics wide-angle position.
Although the operation of the position of dolly-out,ing dolly-back,, move along the horizontal cam groove 15b of cam path 15a, make cam ring 12 not move along optical axis direction at this opereating specification cam ring pin 12d also by gear unit 14 driving cam rings 12 from wide-angle position to Figure 12 C; Therefore, directly guide ring 16 does not move along optical axis direction yet, as shown by arrow D.At this moment, the first set of shots frame 10 moves as shown by arrow E, and cam pin 10a moves along the second cam path 12a of cam ring 12 and the gathering sill 16a of direct guide ring 16.
Simultaneously, the second set of shots frame 13 moves forward, and as shown by arrow F, its cam pin 13b moves along the cam path 12b of cam ring 12 and the gathering sill 16b of direct guide ring 16.The result of aforesaid operations is, the first set of shots frame 10 and the second set of shots frame 13 are at wide-angle position and dolly-out, dolly-back that optics moves between the position, are used for zoom operation (in the direction of arrow G).
In addition, finish to the gear 14a reverse rotation that moves through driven wheel unit 14 mobile and from the wide-angle position to the retracted position of wide-angle position from the position of dolly-out,ing dolly-back, so cam ring 12 rotates in the opposite direction.
So when the first set of shots frame 10 and the second set of shots frame 13 carried out zoom operation in this way, the 3rd set of shots frame 18 was by unshowned another drive source, for example stepper motor critically moves along optical axis direction.
When having traditional retractable lens 2 indentations of said structure, because thickness such as the optical filter self of low pass filter and cutoff filter, insert the thickness that reaches fixing part with optical filter, limited the mobile range of the 3rd set of shots frame 18 towards the solid imaging element of forming by CCD, CMOS etc. 24.And, the distance between the distance between the 3rd set of shots frame 18 and the second set of shots frame 13 and the second set of shots frame 13 and the first set of shots frame 10 also there is certain restriction.
Even the 3rd set of shots frame 18 is moved to back lens barrel 17 (optical filter inserts and fixing place) to contact always, distance between the distance between the 3rd set of shots frame 18 and the second set of shots frame 13 and the second set of shots frame 13 and the first set of shots frame 10 also can be as small as them and is in contact with one another respectively, and total indentation length of image pickup camera lens part 2 (retractable lens) only can be as thin as to a certain degree in shape.
And, under cutoff filter is attached to state on the optics low pass filter, optical filter 22 is used as and is fixed to the optical filter of back on the lens barrel 17, makes cutoff filter can not be arranged on the optical axis or departs from optical axis, thereby can not carry out night and clap.
Then, with reference to Figure 14 A to 14C, Figure 15 A and 15B, Figure 16 and 17 describes in detail according to can be in the structure of the retractable lens (image pickup camera lens part) 70 of traditional telescopic optical unit of night photography (having the shooting function at night).
It is a kind of by being arranged on cutoff filter on the optical axis or departing from optical axis and realize the technology of taking clapping night.The one-piece construction of optical unit with above-mentioned can not be identical in the structure of the scalable optical unit 2 (referring to Figure 12 A to 12C) of the type of night photography (no night shooting function).Therefore, same parts is represented only different parts to be illustrated to save explanation with identical label.
As shown in Figure 14 A to 14C, back lens barrel 17A comprise roughly be in its surperficial center facing to set collar 15, form the housing (casing) 71 of approximate rectangular parallelepipedon.As shown in Figure 16 and 17, in housing 71, be provided with optical filter and return part 72, be used for optical filter (referring to cutoff filter 91 in this embodiment) is arranged in the appropriate location on the camera lens optical axis direction.In the front of housing 71, be provided with this optical filter and return part 72 corresponding opening 73, be used to make incident light process, the solid imaging element 24 that directive is supported by back lens barrel 17A, for example CCD and CMOS from object side.
In addition, be provided with at the upper surface of housing 71 and withdraw from mouthful (an escape exit) 74, be used to make cutoff filter 91 edges to withdraw from the direction that its optical axis L intersects, cutoff filter is to return a concrete example of returning the optical filter in the part 72 at optical filter.Be provided with a pair of targeting part 75 and 75 in the both sides of withdrawing from mouthfuls 74, be used for when infrared cutoff filter is mobile under power drive, suitably with the direction of optical axis intersection on guide cutoff filter 91.
In addition, on the diagonal line top on the surface of back lens barrel 17A power source mounting portion 77 is set, is used to install power source 76, its generation is used for the power of mobile cutoff filter 91.As an example of power source 76, can use stepper motor, a side of its rotating shaft 76a projection is provided with flange (flange) part 76b, is used for cooperating with power source mounting portion 77.By using the fastener such as screw that flange section 76b is fixed to power source mounting portion 77, power source 76 is installed on the lens barrel 17A of back.At this moment, rotating shaft 76a inserts in the bearing 77a.
The rotating shaft 76a and the rotating dog 78 of power source 76 are provided with integratedly through arm 78a.Rotating dog 78 is parallel to separate preset distance with rotating shaft 76a and through arm 78a and rotating shaft 76a.In addition, on the top of rotating shaft 76a sector gear 79 is installed, wherein gear parts 79a is positioned on its part neighboring.Be provided with engage slots 79b at the center of sector gear 79, rotating shaft 76a and rotating dog 78 insert wherein.Rotating shaft 76a and rotating dog 78 common and engage slots 79b engagements, thus drive sector gear 79 by the rotation of rotating shaft 76a, rotate with integral body.
With the gear parts 79a pinion mate 80 of sector gear 79, pinion wheel 80 is rotatably supported by the axle 76c that is arranged on the flange section 76b.The part periphery of pinion wheel 80 is provided with arm 80a, is installed on the arm 80a towards the drive pin 81 of power source 76 direction projections.The power transmission mechanism 83 that these power sources 76, rotating dog 78, sector gear 79, pinion wheel 80 and drive pin 81 constitute in order to mobile spectral filter bearing 82.
Optical filter bearing 82 is supported cutoff filters 91, to move, wherein to be provided with the support part 82a that is formed with the U-shaped opening that is used to install cutoff filter 91 in the direction that intersects with optical axis L.On two outside surfaces of the open side of supporting part 82a, projection 82b is set respectively, is used for fixing and cooperates hoop 84, with the sealing opening.Opposite side at the support part 82a of optical filter bearing 82 has elongated slot 82c, drive pin 81 slidably with its engagement.
And, on the opposite side of the open side of the support part 82a of optical filter bearing 82, bossed gib block 82d is set, when optical filter when the direction that intersects with optical axis L moves, it is by targeting part 75 guiding of housing 71.Optical filter bearing 82 forms by the polycarbonate resin that for example contains glass fibre is molded, has intensity, light and covers characteristic and the property produced in batches.
Cooperate hoop 84 elastic bodys to form, have the engaging hole 84a of a pair of and protruding 82b engagement by elastic component such as rubber.Promote part 84b cooperating to be provided with on the hoop 84, be used for resiliency urged cutoff filter 91, fall down when preventing to install.When being loaded in this opening at cutoff filter 91, will cooperate hoop 84 to be fastened to the open side of supporting part 82a, cutoff filter 91 is placed on the precalculated position, is supported by optical filter bearing 82.
Support the method for cutoff filter 91 to be not limited to use fastening (snap-fit) method that cooperates hoop 84; Can adopt the whole bag of tricks such as the Method for bonding that utilizes hot moulding or bonding agent or other method.
In this example, supported by optical filter bearing 82 under the situation that the direction that intersects with optical axis L moves that cutoff filter 91 can be used as independent formation the with the discrete member of optics low pass filter 85, this is different from traditional retractable lens.
Optics low pass filter 85 is for also being necessary the picture of recording image pick-up device in bat at the night process of photographic IR.Thereby in this example, optics low pass filter 85 is arranged in before the solid imaging element 24 along optical axis direction, is installed in the central opening place of back lens barrel 17A, places the precalculated position to be fixed.
Above-mentioned power transmission mechanism 83 and optical filter bearing 82 constitutes travel mechanisms 86, is used for departing from mobile cutoff filter 91 between the position of optical axis in the position on the optical axis and.Travel mechanism 86 and housing 71 constitutes drawing-out mechanisms 88, be used for from the optical axis the precalculated position, along the linear mobile cutoff filter 91 of rectangular direction with it, so that optical filter is withdrawn into the precalculated position of departing from optical axis.
Below with the operation of brief description drawing-out mechanism 88.It at first is the situation description that moves to the position of departing from optical axis about cutoff filter from the position on the optical axis.
During beginning, drive source 76 is driven, to press predetermined sense of rotation rotating shaft 76a and rotating dog 78.This makes sector gear 79 with the equidirectional rotation, and rotates identical amount, and it is rotated with rotating shaft 76a, just likes an integral body.Along with the rotation of sector gear 79, the amount of rotating corresponding meshing gear number in opposite direction with the pinion wheel 80 of gear parts 79a engagement.
Along with drive pin 81 around axle 76c rotation, drive pin 81 moves along slotted hole 82c, and optical filter bearing 82 is moved along bearing is return the direction that part 72 pulls out from optical filter.Therefore, the optical filter bearing 82 by targeting part 75 guiding moves along the direction with optical axis intersection.As a result, the cutoff filter of being supported by optical filter bearing 82 91 moves to the precalculated position of departing from optical axis along orthogonal directions from the precalculated position linearity on optical axis.
On the other hand, move under the situation in the precalculated position on the optical axis from the precalculated position of departing from optical axis, carry out with above-mentioned withdrawing from and operate opposite operation at cutoff filter 91.By this operation, cutoff filter 91 is movable to the precalculated position on optical axis.
Be equipped with thereon on the front surface of back lens barrel 17A of cutoff filter 91 grades, the rear end of set collar 15 contacted with it, and use fastener to be fixed into as a whole such as trip bolt etc.As shown in Figure 17, for this reason, the rear end of set collar 15 is provided with a plurality of screw receiving unit 15c, and the screw that matches inserts in wherein, and in addition, back lens barrel 17A also is provided with the corresponding recessed portion 17a with these screw receiving units 15c equal number.By each screw receiving unit 15c is coupled among each recessed portion 17a, set collar 15 is with respect to lens barrel 17A location, back.By tightening screw in this state, set collar 15 just is fastened on the lens barrel 17A of back, to be combined into one.
Rely on said structure, retractable lens 70 can be realized above-mentioned " shooting function at night " and " function of finding a view night ".Specifically, when retractable lens is used as optical lens, from the indentation state shown in Figure 14 A through the wide-angle state shown in Figure 14 B to the state of dolly-out,ing dolly-back shown in Figure 14 C, by being arranged on cutoff filter 91 on the optical axis or departing from optical axis, can realize " bat at night " and " find a view night " of photographic IR.
Figure 15 A and 15B have explained the operation that the cutoff filter 91 of retractable lens 70 moves into and shifts out; State when Figure 15 A illustrates cutoff filter 91 and is arranged on precalculated position on the optical axis; Figure 15 B illustrates the state that cutoff filter 91 shifts out optical axis fully.In phase diagram, mark H represents the moving direction of cutoff filter 91.
As the image pick-up device that comprises above-mentioned scalable optical unit, for example, in patent documentation 1, disclose a kind of.A kind of optical devices such as camera etc. that can move its optical system between working position and retracted position are disclosed in patent documentation 1.
Being characterized as of this optical devices comprises first lens unit that constitutes optical system; Be used to drive first motor of first lens unit; Constitute second lens unit of optical system, it is arranged on after first lens unit; Be used to drive second motor of second lens unit; And control device, be used to control first and second motors so that second lens unit is return in response to the returning order of optical system, after second lens unit has been return, begin to make first lens unit to return, and first lens unit is returned to owing to returning in the space that second lens unit forms.
In addition, as the image pick-up device that is provided with cutoff filter, for example, in patent documentation 2, disclose a kind of.In this patent documentation 2, disclose a kind of image pick-up device, had the image pickup device that in visible light and ultrared scope, to photograph.
This image pick-up device is characterised in that, in the image pick-up device with the image pickup device that can photograph in visible light and ultrared scope, includes cutoff filter, can be disposed on the light path and departs from light path; Signal processing apparatus is used to handle the vision signal that obtains by image pickup device; Pick-up unit is used for sensed luminance when obtaining vision signal by shooting; And control device, whether the outcome evaluation that is used for detecting according to pick-up unit operates mistake, and notifies this faulty operation to the user.
Japanese publication patented claim No.2000-194046 (the 3rd to 5 page, Fig. 1 etc.)
Japanese publication patented claim No.2000-261716 (the 2nd page, Fig. 1)
; in above described with reference to Fig. 4 A to 14C " have shooting function at night, can at the retractable lens of night photography "; owing to increased the immigration and the shift-out mechanism of cutoff filter; so compare with " no night shooting function, can not at the retractable lens of night photography "; the total length of camera lens becomes longer when indentation, this causes a problem.
This point will describe in detail; Fig. 4 A illustrates the retractable lens (hereinafter referred to as " X type ") of shooting function " no night "; Fig. 4 B illustrates " according to retractable lens prior art, that have the shooting function at night (hereinafter referred to as " Y type ") "; Fig. 4 C illustrates " according to retractable lens of the present invention, as to have the shooting function at night (hereinafter referred to as " Z type ") ".
Clear illustrating compared X type retractable lens and Y type retractable lens from Fig. 4 A and 4B, and the thickness T 1 of Y type retractable lens causes obvious increase because of the thickness of drawing-out mechanism 88.
In addition, shown in Fig. 4 B, in " have shooting function at night, can at the retractable lens of night photography ", when in indentation because user's power cutoff or battery catastrophic failure or battery case are opened when power supply stops suddenly, adopted such mode: the user can give external force of this retractable lens by force with manual operation, is used for carrying out by force flexible operation.
In this case, because power is not fed to the immigration and the shift-out mechanism of cutoff filter, so it can not make cutoff filter withdraw from optical axis simultaneously with the indentation operation.The result, there is such danger: forced returning parts and may contacting or disturb other parts of returning by external force, so that cutoff filter, optical filter bearing and driving mechanism thereof, perhaps the driving mechanism of retractable lens self (for example cam ring) structurally may be destroyed, and this causes another problem.
Summary of the invention
In order to address the above problem, purpose provides and can make retractable lens than thinner in the past optical unit and the image pick-up device with this optical unit exactly in the present invention.
In addition, the present invention also aims to, the operation if the user stretches by force, perhaps occur being return or during indentation when retractable lens, be used to make optical filter to withdraw from such abnormal occurrence that optical axis is not worked etc. with the drawing-out mechanism that departs from optical axis, be used for making by force optical filter to solve the problems referred to above from the mechanism that optical axis is return to depart from optical axis by providing a kind of.
To achieve these goals, optical unit according to the application is a scalable optical unit, it has a stationary magazine creel, at least one along optical axis direction with respect to stationary magazine creel lens barrel movably, and be arranged on camera lens and optical filter between stationary magazine creel and the lens barrel, described optical unit comprises a drawing-out mechanism, wherein by indentation so that lens barrel during near optical filter, by described drawing-out mechanism optical filter is moved to withdraw from optical axis in the direction with optical axis intersection, wherein camera lens can return to the position on the optical axis after optical filter moves.
In addition, optical unit according to the application is a scalable optical unit, it has a stationary magazine creel, at least one along optical axis direction with respect to stationary magazine creel lens barrel movably, and be arranged on camera lens and optical filter between stationary magazine creel and the lens barrel, described optical unit comprises: a drawing-out mechanism, wherein by indentation so that lens barrel during near optical filter, by described drawing-out mechanism optical filter is moved to withdraw from optical axis in the direction with optical axis intersection, with a drawing-out mechanism by force, be used for to make optical filter when optical axis withdraws from, make optical filter withdraw from optical axis by force when drawing-out mechanism.
In addition, a kind of image pick-up device with described optical unit according to the application comprises a scalable optical unit, it comprises a stationary magazine creel, at least one along optical axis direction with respect to stationary magazine creel lens barrel movably, and be arranged on camera lens and optical filter between stationary magazine creel and the lens barrel, with a drawing-out mechanism, be used to make optical filter to move and withdraw from optical axis in direction with optical axis intersection, this image pick-up device is the filming apparatus such as digital camera and digital camera, and it can make camera lens be retracted into position on the optical axis after optical filter moves.
In addition, a kind of image pick-up device with described optical unit according to the application is a filming apparatus, such as digital camera and digital camera, it comprises a scalable optical unit, this optical unit comprises a stationary magazine creel, at least one along optical axis direction with respect to stationary magazine creel lens barrel movably, and be arranged on camera lens and optical filter between stationary magazine creel and the lens barrel, one drawing-out mechanism, wherein in indentation so that lens barrel during near optical filter, by described drawing-out mechanism optical filter is moved to withdraw from optical axis in the direction with optical axis intersection, with a drawing-out mechanism by force, be used for to make optical filter when optical axis withdraws from, make optical filter withdraw from optical axis by force when drawing-out mechanism.
According to the optical unit of this application make optical filter when the lens barrel indentation with the direction of optical axis intersection on return, with after optical filter moves, the position on an optical axis forms the space of a preliminary dimension, and the camera lens of lens barrel is returned in this space.Thereby, be retracted within the described space by after optical filter moves, making camera lens, the total length attenuation of the retractable lens of described optical unit, thus make this optical unit to be miniaturized.
In addition, by except that drawing-out mechanism, being provided with a drawing-out mechanism by force, operate by force or when drawing-out mechanism is made mistakes when flexible the user, can make optical filter be withdrawn into a position of departing from optical axis in the position from the optical axis by force by drawing-out mechanism by force, therefore make it possible to prevent driving mechanism (for example cam ring) structural break such as optical filter and support member, its driving mechanism or the retractable lens self of cutoff filter.
In addition, according to the image pick-up device that comprises described optical unit of this application, owing to used the optical unit of Miniaturizable, so this device can be used as the filming apparatus such as digital camera and digital camera, and the overall dimensions of this image pick-up device is little, slim body.
In addition, by except that drawing-out mechanism, being provided with a drawing-out mechanism by force, because user's flexible by force operation or because the destructurized risk of the optical unit that the fault of drawing-out mechanism when flexible causes has reduced, this makes the rugged construction that can have anti-fracture such as image pick-up device of digital camera and digital camera.
Description of drawings
Figure 1A is the cut-open view that the indentation state of first embodiment of optical unit according to the present invention is shown, and described indentation state is the state of returning when retractable lens is not used;
Figure 1B is the cut-open view that the wide-angle state of the retractable lens of first embodiment of optical unit according to the present invention is shown;
Fig. 1 C is the cut-open view that the state of dolly-out,ing dolly-back of the retractable lens of first embodiment of optical unit according to the present invention is shown;
Fig. 2 is the amplification view of Figure 1A;
Fig. 3 A is that first embodiment that is used to explain the optical unit according to the present invention moves into cutoff filter or the cut-open view of the operation of shifting out, and optical filter shown in the figure is positioned at the state on the optical axis;
Fig. 3 B is that first embodiment that is used to explain the optical unit according to the present invention moves into cutoff filter or the cut-open view of the operation of shifting out, and optical filter shown in the figure shifts out the state of optical axis;
Fig. 4 A is the cut-open view of retractable lens that the traditional optical unit of shooting function at no night is shown;
Fig. 4 B is the cut-open view that the retractable lens of the existing optical unit with shooting function at night is shown;
Fig. 4 C is the cut-open view of retractable lens that illustrates according to first embodiment of the optical unit of the present invention with shooting function at night;
Fig. 5 A is the cut-open view that the indentation state of second embodiment of optical unit according to the present invention is shown, and described indentation state is the return state of retractable lens when not being used;
Fig. 5 B is the cut-open view that the wide-angle state of the retractable lens of second embodiment of optical unit according to the present invention is shown;
Fig. 5 C is the cut-open view that the state of dolly-out,ing dolly-back of the retractable lens of second embodiment of optical unit according to the present invention is shown;
Fig. 6 A is that second embodiment that is used to explain the optical unit according to the present invention moves into cutoff filter or the cut-open view of the operation of shifting out, and optical filter shown in the figure is positioned at the state on the optical axis;
Fig. 6 B is that second embodiment that is used to explain the optical unit according to the present invention moves into cutoff filter or the cut-open view of the operation of shifting out, and optical filter shown in the figure shifts out the state of optical axis;
Fig. 7 be illustrate second embodiment of optical unit according to the present invention retractable lens the second set of shots frame and the back lens barrel side view;
Fig. 8 illustrates according to the second set of shots frame of the retractable lens of second embodiment of the invention and the skeleton view of back lens barrel;
Fig. 9 is the skeleton view of outward appearance that an embodiment of digital camera is shown, and the retractable lens of the optical unit of described camera is in the indentation state;
Figure 10 is the skeleton view of outward appearance that an embodiment of digital camera is shown, and the retractable lens of the optical unit of described camera elongates the wide-angle state or the state of dolly-out,ing dolly-back;
Figure 11 A is the skeleton view of retractable lens that optical unit the is shown outward appearance when being in the indentation state;
Figure 11 B is the skeleton view of retractable lens that optical unit the is shown outward appearance when being in the wide-angle state;
Figure 11 C is the skeleton view that retractable lens that optical unit is shown is in the outward appearance when dolly-out,ing dolly-back state;
Figure 12 A is the cut-open view of indentation state that traditional retractable lens of shooting function at no night is shown;
Figure 12 B is the cut-open view of wide-angle state that traditional retractable lens of shooting function at no night is shown;
Figure 12 C is the cut-open view of the state of dolly-out,ing dolly-back that traditional retractable lens of shooting function at no night is shown;
Figure 13 is the decomposition diagram of the traditional retractable lens shown in Figure 12;
Figure 14 A illustrates the cut-open view of indentation state that has the retractable lens of shooting function at night according to prior art;
Figure 14 B illustrates the cut-open view of wide-angle state that has the retractable lens of shooting function at night according to prior art;
Figure 14 C illustrates the cut-open view of the state of dolly-out,ing dolly-back that has the retractable lens of shooting function at night according to prior art;
Figure 15 A is used to explain shown in Figure 14 that the cutoff filter that has a retractable lens of shooting function at night according to prior art moves into or shifts out the cut-open view of operation, and optical filter shown in the figure is positioned at the state on the optical axis;
Figure 15 B is used to explain shown in Figure 14 that the cutoff filter that has a retractable lens of shooting function at night according to prior art moves into or shifts out the cut-open view of operation, and optical filter shown in the figure shifts out the state of optical axis;
Figure 16 is from have the observed decomposition diagram in front side of drawing-out mechanism etc. of cutoff filter of the retractable lens of shooting function at night shown in Figure 14 according to prior art;
Figure 17 is from have the observed decomposition diagram of rear side of drawing-out mechanism etc. of cutoff filter of the retractable lens of shooting function at night shown in Figure 14 according to prior art.
Embodiment
Hereinafter, illustrate with reference to the accompanying drawings according to scalable optical unit of the present invention and the embodiment that comprises the image pick-up device of this optical unit.
Figure 1A to 1C is the cut-open view according to first embodiment of the application's retractable lens, and wherein, Fig. 1 illustrates the indentation state, that is to say the retracted position of camera lens when not using; Figure 1B illustrates wide-angle position; Fig. 1 C illustrates the position of dolly-out,ing dolly-back.Fig. 2 is the amplification view of Figure 1A.In addition, Fig. 3 A and 3B are used to explain move into or shift out the cut-open view of the operation of cutoff filter.
In context, similar to the explanation of reference Figure 12 A to 12C, when carrying out the operation of zoom operation and wide-angle in contrast, by 12 rotations of driving cam ring, make the first set of shots frame 10 of supporting a plurality of camera lenses 11 and the second set of shots frame 13 of supporting a plurality of camera lens 13a, retracted position from Figure 1A moves to the wide-angle position among Figure 1B, and the wide-angle position from Figure 1B moves to the position of dolly-out,ing dolly-back among Fig. 1 C.
In addition, the application's first feature is, when the optical unit indentation, optical filter edge that is formed by optics low pass filter, cutoff filter etc. and the direction that optical axis L intersects are withdrawed from, the 3rd first-class set of shots frame indentation is withdrawed from the space that forms by described, therefore can be made the total length attenuation of retractable lens.
The drawing-out mechanism 88 of optical filter is described with reference to Figure 1A to 1C, Fig. 2 and Fig. 3 A and 3B below.Be noted that about Figure 1A to 1C, Fig. 2 and Fig. 3 A and 3B the parts identical with those parts that illustrate are represented to be explained with identical label in Figure 12 A to 12C, Figure 13, Figure 14 A to 14C and Figure 15 A and 15B.
Structure according to the retractable lens (image pickup camera lens part) 90 of first embodiment, identical substantially with the structure of retractable lens reference Figure 14 A to 14C explanation, that have " night shooting function, can at night photography ", thereby, here will illustrate simply one-piece construction, will explain distinctive points.
In Figure 1A to 1C, label 10 expresses support for the first set of shots frame of a plurality of camera lenses 11; Label 12 is illustrated in the cam ring that supports the first set of shots frame 10 on the optical axis direction movably; Label 13 expresses support for the second set of shots frame of a plurality of camera lens 13a; Label 16 is illustrated in the direct guide ring that supports the second set of shots frame 13 on the optical axis direction movably.In addition, label 15 is illustrated on the optical axis direction set collar of supporting cam wheel ring 12 movably; Set collar 15 is fixed on the front surface of back lens barrel 17B integratedly.
Although the structure of the 3rd set of shots frame 18B is identical with the structure of aforementioned the 3rd set of shots frame 18, but in the scope that can not cause to the optical property adverse effect, preferably make the camera lens frame less diametrically, and the camera lens shaped as frame is become make cutoff filter 91 and optical filter bearing 82 can be easily to withdraw from the direction that intersects with optical axis L.In this case, following way also is effective: a kerf (cutout) avoid the optical filter bearing 82 that withdraws from the direction that intersects with optical axis L is set in three-lens frame 18B.
Although the structure of the back lens barrel 17B also structure with aforementioned back lens barrel 17A is identical, back lens barrel is preferably as follows setting, so that optical filter bearing 82 is withdrawed from the direction that intersects with optical axis L and the 3rd set of shots frame 18B is return in the direction such as the solid imaging element 24 of CCD and CMOS.
At first, withdraw from the direction that intersects with optical axis L for making optical filter bearing 82, make the inlet that withdraws from mouthful than before bigger.The second, return in the space that optical filter bearing 82 has formed after the direction that intersects with optical axis L withdraws from for making the 3rd set of shots frame 18B, make opening 73 than before bigger.Opening 73 can also have the function of fixed aperture (fixed stop),, because this function can be born by other opening (for example, the part of fixed optics low pass filter 85), therefore can make opening 73 bigger in design.
Then, will the operation of this embodiment be described.When the indentation state that is used as from Figure 1A, through the wide-angle state of Figure 1B, during to the optical lens of the state of dolly-out,ing dolly-back of Fig. 1 C, by cutoff filter 91 being arranged on the optical axis L and departing from optical axis L, provide infrared function, to carry out photographic IR (referring to Fig. 3 A and 3B).
In the flexible operation of retractable lens 90, shown in Figure 1A,, utilize optical filter bearing 82 by providing power to optical filter bearing 82 from power source 76, cutoff filter 91 can withdraw from (arrow H) in the direction that intersects with optical axis L.After this, the 3rd set of shots frame 18B is returned to owing to make in the space of cutoff filter 91 formation after the direction that intersects with optical axis L withdraws from (arrow I).This returns to than darker before position the 3rd set of shots frame 18B, must be than thinner in the past so camera lens 19 is collapsible.
In addition, since the 3rd set of shots frame 18B by indentation must be than before thinner, so the first set of shots frame 10, the second set of shots frame 13 and directly guide ring 16 can move along predetermined cam curve, and the idle space that returns to gained is with superimposed (arrow A, B and C).
Thereby, can clearly show the relation between these three types from 4A to 4C, relatively X type retractable lens (Fig. 4 A) and Y type retractable lens (Fig. 4 B) can be found, the total length of Y type retractable lens has increased, and the amount of increase is the thickness T 1 of drawing-out mechanism 88.On the other hand, relatively Y type retractable lens and Z type retractable lens (Fig. 4 C) can be found, the total length attenuation of Z type retractable lens, the amount of attenuation is a thickness T 2.Moreover, compare X type retractable lens and Z type retractable lens, although increased cutoff filter 22, the total length attenuation of Z type retractable lens, the amount of attenuation is a thickness T 3.
According to the retractable lens 90 of this embodiment, it is compared with prior art or traditional " have shooting function at night, can at the retractable lens of night photography ", has formed the space that is used to return effectively, and has been used for indentation camera lens frame (Fig. 4 A to 4C).This makes, and the total length of retractable lens 90 can shorten, attenuation.
In addition, when comparing with traditional " no night shooting function, can not at the retractable lens of night photography ", owing to, form the indentation space and also effectively utilize, so the total length of retractable lens can shorten, attenuation by cutoff filter 91 is withdrawed from the direction that intersects with optical axis L.
Fig. 5 A, 5B and 5C are the cut-open views according to the retractable lens of the application second embodiment; Fig. 5 A represents the indentation state, that is to say the retracted position when camera lens is not used; Fig. 5 B represents its wide-angle position; Fig. 5 C represents its position of dolly-out,ing dolly-back.Fig. 6 A and 6B are used to explain that the cutoff filter that makes retractable lens moves into or shift out the cut-open view of operation.Fig. 7 is the side view of expression second set of shots frame and back lens barrel.Fig. 8 is a skeleton view of representing the second set of shots frame and back lens barrel simultaneously.
In retractable lens 100, with illustrated identical of reference Figure 1A, 1B and 1C, support the first set of shots frame 10 of a plurality of camera lenses 11 and support the second set of shots frame 13B of a plurality of camera lens 13a to be driven by cam ring 12, rotation also moves to the wide-angle position of Fig. 5 B and moves to the position of dolly-out,ing dolly-back of Fig. 5 C from the wide-angle position of Fig. 5 B from the retracted position of Fig. 5 A, is used for zoom operation and wide-angle in contrast and operates.Therefore, omit the description of remainder.
Be noted that in Fig. 5 A to 5C, Fig. 6 A and 6B, Fig. 7 and Fig. 8, represent with identical label with reference to the identical parts of the parts of Figure 1A to 1C, Fig. 2, Fig. 3 A and 3B explanation with the front.
Structure according to the retractable lens (image pickup camera lens part) 100 of second embodiment, identical substantially with the one-piece construction of retractable lens explanations such as reference Figure 1A to 1C, that have " night shooting function, can at night photography ", so, here will illustrate simply its one-piece construction, will explain distinctive points.
In Fig. 5 A to 5C, the label 10 expressions first set of shots frame; Label 12 expression cam rings; Label 13B represents the second set of shots frame; The direct guide ring of label 16 expressions.Label 15 expression set collars, it is fixed on the front surface of back lens barrel 17B integratedly.Back lens barrel 17B supports optics low pass filter 85 and solid imaging element 24.Before optics low pass filter 85,, be arranged in the position on the optical axis L and depart between the position of optical axis linear removable as the cutoff filter 91 of a concrete example of optical filter.
It designs like this, and when by making cutoff filter 91 inwardly and drawing-out mechanisms 88 that outwards move when being return with indentation, cutoff filter 91 is withdrawn into the precalculated position of departing from optical axis automatically.With this drawing-out mechanism 88 in combination, be provided with drawing-out mechanism 92 by force.Drawing-out mechanism 92 is a kind of like this mechanisms by force, when in flexible operation because the fault of drawing-out mechanism 88 when causing cutoff filter 91 not to be withdrawn into the precalculated position, it makes cutoff filter 91 move to the predetermined position of withdrawing from by force.
In this embodiment, be arranged on the second set of shots frame 13B as the projection 92 of a concrete example of drawing-out mechanism 92 by force.As Fig. 7,8 and other figure as shown in, be arranged on that projection 92 shape pictures on the second set of shots frame 13B contract taper gradually by flat part and the wedge shape that forms.Wherein form clinoplane 92a.
In flexible operation, projection 92 is pushed the pressure receiving unit 79c of the sector gear 79 of power transmission mechanism 83, makes mechanism's 83 work, makes optical filter bearing 82 to move in the direction of leaving optical axis L.In other words, drawing-out mechanism by force 92 in this embodiment is designed so that with a masterpiece that moves the second set of shots frame 13B on optical axis direction be power, makes drawing-out mechanism 88 work, and is designed so that cutoff filter 91 withdraws from by force and leaves optical axis L.
Next the operation of this embodiment will be described.As from the indentation state of Fig. 5 A through the wide-angle state of Fig. 5 B under the state of the optical lens of the state of dolly-out,ing dolly-back of Fig. 5 C, by cutoff filter 91 being arranged on the optical axis L and departing from optical axis L, provide the infrared shooting function, to carry out photographic IR.
Particularly, by selecting the cutoff filter 91 shown in Fig. 6 A to be arranged on state on the optical axis L and the cutoff filter 91 shown in Fig. 6 B move to the position of departing from optical axis L from the position on the optical axis L state (arrow H), by means of aforementioned night the shooting function and the function of finding a view night can finish at night photography.
In the flexible operation of retractable lens 100, shown in Fig. 5 A, provide power to optical filter bearing 82, so that cutoff filter 91 withdraws from the direction that intersects with optical axis L by optical filter bearing 82 from power source 76.Subsequently, the 3rd set of shots frame 18B is returned at cutoff filter 91 in the direction that intersects with optical axis L is return the free space that the back forms (arrow I).
Therefore, the 3rd set of shots frame 18B can be returned to the darker position than before, is in thinner state.In addition, because the 3rd set of shots frame 18B is retracted than before thinner, so the first set of shots frame 10, the second set of shots frame 13B and direct guide ring 16 can return to (arrow A, B and C) in the idle space by moving along predetermined curve in overlapping mode.
In this case, if because for example because user's power cutoff or battery catastrophic failure or user open battery frame, reasons such as power supply stops suddenly, the user applies an external force to retractable lens 100 by force by manual operations, and then flexible operation will be carried out by force; In this situation, drawing-out mechanism 92 will work by force.
Particularly, if the user attempts by manual operations indentation retractable lens 100 by force, as shown in figure 16, when the indentation EO, the clinoplane 92a of projection 92 is resisted against from the top on the pressure receiving unit 79c of sector gear 79 of power transmission mechanism 83.Therefore, clinoplane 92a pushes sector gear 79, it is turned clockwise, as shown in figure 16.Thereby by the operation of pinion wheel 80 and drive pin 81, optical filter bearing 82 outwards moves, and 91 of cutoff filters of being supported by optical filter bearing 82 move to the position of departing from optical axis L from the position on the optical axis L.
As mentioned above, according to retractable lens 100 in this embodiment, be full of because flexible by force operation of user, fault of drawing-out mechanism 88 or the like are stayed on the optical axis L cutoff filter 91 when carrying out flexible operation, also can make cutoff filter 91 be withdrawn into the position of departing from optical axis L from the position on optical axis L by force with drawing-out mechanism 92 by force.Therefore, can prevent that cutoff filter 91, its optical filter bearing 82 etc. from contacting with other parts or disturb, simultaneously can prevent cutoff filter 91, optical filter bearing 82, its power transmission mechanism 83, or the driving mechanism of retractable lens self (for example cam ring 12) is destructurized, makes it possible to improve reliability.
The present invention is not limited to these embodiment shown in the top described and accompanying drawing, does not break away from spirit of the present invention, can carry out multiple modification.
For example, although adopted such structure in the above-described embodiments, cutoff filter is withdrawed from the direction with optical axis intersection, but this direction also not necessarily will with its optical axis intersection, it can be a kind of like this structure, promptly cutoff filter wherein can be set on the optical axis and depart from optical axis suitably to work, for example, cutoff filter can move in diagonal, perhaps by pivoting operation and moving, so the direction that cutoff filter is moved into and shifts out without limits along camber line.In addition, be used to make cutoff filter to move into and the mechanism that shifts out also is not limited to the foregoing description.
And, although in the above-described embodiments, when be used for making cutoff filter can with the direction of optical axis intersection on the railway line targeting part 75 that moves when being arranged on the back lens barrel, the driving of cutoff filter and guide piece also can be by other member (for example, hinge type (flap type), rotation (turntype) etc.) form, perhaps can be arranged in the barrier driving mechanism etc.
In addition, the drive system of the lens construction of retractable lens and retractable lens also is not limited to the foregoing description.And, about drive source, not only can use stepper motor, can also make supersonic motor, common DC (direct current) motor etc.In addition, gear unit is always not necessary, for example, can adopt and use supersonic motor, linear electric machine etc. directly to drive.
Also have, the stretching structure of retractable lens is not limited to the cam mechanism that has cam path and cam pin, and just need make optical lens system shrink than thin mechanism; Therefore, the various mechanisms such as ball screw-type, rack pinion type, linear electric machine type can adopt.In addition, by drawing-out mechanism 88 and by force drawing-out mechanism 92 make its optical filter that withdraws from be not limited to above-mentioned cutoff filter, for example, other element of optics low pass filter, liquid crystal device, EC device and similar optical filter can be applied to this.
Claims (7)
1. a telescopic optical unit, it comprises
One stationary magazine creel,
The lens barrel that at least one can move with respect to described stationary magazine creel along optical axis direction, and
Be arranged on a camera lens and an optical filter between described stationary magazine creel and the described lens barrel, described optical unit comprises:
One drawing-out mechanism is used for when described lens barrel during by indentation described optical filter being moved in the direction with an optical axis intersection, withdrawing from this optical axis, and
One drawing-out mechanism by force is used for making described optical filter withdraw from optical axis by force when described drawing-out mechanism can not make described optical filter withdraw from this optical axis.
2. optical unit as claimed in claim 1, wherein
Described drawing-out mechanism by force comprises a projection, and it is set in place in the described lens barrel of described optical filter one side; With a pressure receiving unit, it is arranged in the member of described optical filter one side, and the described projection that is abutted against it pushes, and makes described optical filter move to a position of departing from optical axis from the position on optical axis.
3. optical unit as claimed in claim 1, wherein
Described drawing-out mechanism by force has a projection that is arranged in the described lens barrel of described optical filter one side, and activates described drawing-out mechanism by described projection, so that described optical filter withdraws from optical axis by force.
4. optical unit as claimed in claim 1, wherein
Described drawing-out mechanism comprises a housing, and it is arranged in the described stationary magazine creel, supports described optical filter movably; With a travel mechanism, move between the position that is used to make described optical filter depart from optical axis in the position on the described optical axis and.
5. optical unit as claimed in claim 4, wherein
Described travel mechanism comprises an optical filter bearing, is used to support described optical filter; One power source, it produces power to move described optical filter bearing in described housing; With a power transmission mechanism, be used for power is transferred to described optical filter bearing so that linear moving from described power source.
6. optical unit as claimed in claim 1, wherein
Described optical filter is a cutoff filter and/or a low pass filter.
7. an image pick-up device that comprises a scalable optical unit, described optical unit comprises
One stationary magazine creel,
The lens barrel that at least one can move with respect to described stationary magazine creel along optical axis direction,
Be arranged on a camera lens and an optical filter between described stationary magazine creel and the described lens barrel,
One drawing-out mechanism is used for when described lens barrel during by indentation described optical filter being moved in the direction with optical axis intersection, withdrawing from optical axis, and
One drawing-out mechanism by force is used for when described drawing-out mechanism can not make the position of described optical filter from described optical axis withdraw from, and described optical filter is withdrawed from the position from this optical axis by force.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002310204A JP4239552B2 (en) | 2002-10-24 | 2002-10-24 | Optical unit and imaging apparatus |
| JP310204/2002 | 2002-10-24 | ||
| JP312946/2002 | 2002-10-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1729426A CN1729426A (en) | 2006-02-01 |
| CN100445861C true CN100445861C (en) | 2008-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200380106593XA Expired - Fee Related CN100445861C (en) | 2002-10-24 | 2003-10-24 | Optical unit and imaging device comprising optical unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4239552B2 (en) |
| CN (1) | CN100445861C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4708753B2 (en) | 2004-09-29 | 2011-06-22 | キヤノン株式会社 | Lens barrel and imaging apparatus having the same |
| JP4591160B2 (en) * | 2005-04-01 | 2010-12-01 | パナソニック株式会社 | Exhaust fan mounting device |
| EP3185534B1 (en) * | 2015-12-23 | 2020-02-12 | Robert Bosch Gmbh | Camera device with red halo reduction |
| JP6746408B2 (en) * | 2016-07-08 | 2020-08-26 | キヤノン株式会社 | Lens barrel, control method thereof, and imaging device |
| KR102102687B1 (en) * | 2018-11-30 | 2020-04-22 | 한국생산기술연구원 | Infrared image lens module for smartphone |
| CN110908065B (en) * | 2019-12-30 | 2023-09-12 | 湖南长步道光学科技有限公司 | Lens structure capable of rotating along optical axis to prevent falling and imaging equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0772374A (en) * | 1994-01-26 | 1995-03-17 | Nikon Corp | Position controller for photographing lens |
| CN1256432A (en) * | 1998-10-22 | 2000-06-14 | 佳能株式会社 | Optical system |
| JP2000261716A (en) * | 1999-03-11 | 2000-09-22 | Sony Corp | Image pickup device |
| JP2001330878A (en) * | 2000-05-18 | 2001-11-30 | Sony Corp | Image pickup device |
| JP2002176573A (en) * | 2000-12-07 | 2002-06-21 | Matsushita Electric Ind Co Ltd | Optical filter switching mechanism and image pickup device provided with the same |
-
2002
- 2002-10-24 JP JP2002310204A patent/JP4239552B2/en not_active Expired - Fee Related
-
2003
- 2003-10-24 CN CNB200380106593XA patent/CN100445861C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0772374A (en) * | 1994-01-26 | 1995-03-17 | Nikon Corp | Position controller for photographing lens |
| CN1256432A (en) * | 1998-10-22 | 2000-06-14 | 佳能株式会社 | Optical system |
| JP2000261716A (en) * | 1999-03-11 | 2000-09-22 | Sony Corp | Image pickup device |
| JP2001330878A (en) * | 2000-05-18 | 2001-11-30 | Sony Corp | Image pickup device |
| JP2002176573A (en) * | 2000-12-07 | 2002-06-21 | Matsushita Electric Ind Co Ltd | Optical filter switching mechanism and image pickup device provided with the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4239552B2 (en) | 2009-03-18 |
| JP2004145029A (en) | 2004-05-20 |
| CN1729426A (en) | 2006-02-01 |
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