CN203422515U - Lens barrel - Google Patents

Lens barrel Download PDF

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Publication number
CN203422515U
CN203422515U CN201320224571.4U CN201320224571U CN203422515U CN 203422515 U CN203422515 U CN 203422515U CN 201320224571 U CN201320224571 U CN 201320224571U CN 203422515 U CN203422515 U CN 203422515U
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China
Prior art keywords
lens barrel
gap
circuit substrate
grounding pattern
static
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Expired - Lifetime
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CN201320224571.4U
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Chinese (zh)
Inventor
鸟海裕二
丹羽诚
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Ricoh Imaging Co Ltd
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Ricoh Imaging Co Ltd
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  • Lens Barrels (AREA)
  • Studio Devices (AREA)
  • Elimination Of Static Electricity (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)

Abstract

The utility model provides a lens barrel, which can protect electronic circuits and electronic parts disposed in the lens barrel with no metal parts from static influence. In the lens barrel, the lens barrel (1) is internally provided with a circuit substrate (5) in an internal space R communicated with the external via a gap (d1), on the circuit substrate (5), a grounding pattern (52c) is disposed at a position facing the gap (d1). The grounding pattern (52c) is formed at the external side of an electronic circuit part disposed at the circuit substrate. Static electricity applied to the electronic circuit part from the gap (d1) is applied to the grounding pattern (52c) at the vicinity of the gap (d1) and absorbed, and therefore, static electricity will not be applied to the electronic circuit part, thereby preventing malfunction and static destroying in the electronic circuit part.

Description

Lens barrel
Technical field
The utility model relates to the lens barrel that the cameras such as camera are used, and particularly relates to the lens barrel of having implemented static countermeasure.
Background technology
Camera body is the main body of main body, the especially camera of the lens barrel that uses in the cameras such as the camera of taking rest image and animation, video recorder.Be configured to respect to the dismountable lens barrel pattern of wants of camera body for can be between this lens barrel and camera body sending and receiving electric signal.For example, be configured to and need to send the electric signal such as focal position information in lens barrel, f-number information to camera body.Therefore, the built-in various electronic units that comprise semiconductor device in lens barrel, but the misoperation of these electronic units, electrostatic breakdown become problem.That is, independent lens barrel produces static hardly, and it is less that static becomes the situation of problem.But, lens barrel is being installed on to camera body or when integrated, a part for lens barrel becomes the state via camera body ground connection, thereby, in cameraman's body with static while being applied to lens barrel, the static applying is applied in the electronic circuit, electronic unit of lens barrel inside, this static forms noise, and cause misoperation, or electronic unit is caused to electrostatic breakdown.
In order to prevent being above-mentionedly built in the electronic circuit of lens barrel, the misoperation of electronic unit, electrostatic breakdown, in patent documentation 1, adopt following structure: on the switching part being electrically connected to the earthing position of camera, configure flexible electroconductive component, and this electroconductive component is contacted with the periphery cover being formed by metal material of outer peripheral face setting at lens barrel, thereby, the static producing at outer peripheral face lid is delivered to the earthing position of camera via electroconductive component and switching part, and it is discharged earthward.And, in patent documentation 2, adopt following structure: in front, be provided with for improving the lens barrel of the metal decorative panel of exterior quality, the Compress Spring by the grounding pattern of flexible printed board that is built in this lens barrel by electric conductivity is electrically connected to this decorative panel.Even if the static producing is applied on decorative panel, also can be delivered to ground discharge via Compress Spring and grounding pattern in lens barrel.As mentioned above, the technology of patent documentation 1,2 is to concentrate on the metal-made parts that are arranged at lens barrel the static that lens barrel produces, and the technology that concentrated static is discharged at earthing position via conductive component, can eliminate thus static to being built in the electronic circuit of lens barrel, the impact of electronic unit.
Prior art document
Patent documentation
Patent documentation 1 TOHKEMY 2002-357757 communique
Patent documentation 2 TOHKEMY 2003-215425 communiques.
Yet, in recent years, in order to realize lightweight, the cost degradation of lens barrel, be made of resin the component parts of lens barrel, particularly to accounting for most set collar and the operation ring of the formation of lens barrel, wait endless member, do not use metal material completely, and only use resin manufacture.Like this, in only form the lens barrel of the set collar of component parts, the particularly lens barrel of the outside that is exposed at lens barrel, operation ring etc. with resin, friction between these ring components and the static that produces is fewer, but, cameraman with static by the gap that is present in the gap of each component parts, particularly produce between set collar and operation ring, be applied to the inside of lens barrel, infer that it becomes the misoperation of built-in electronic circuit, electronic unit, the factor of electrostatic breakdown.In order to eliminate the problems referred to above, consider to stop up the gap between set collar and operation ring, still, in order to ensure the rotary manipulation smoothly of operation ring, being difficult to make gap is zero.
And, even if adopt the technology of patent documentation 1,2 in this lens barrel, the technology of patent documentation 1,2 is also applicable to have at the outer peripheral face of lens barrel or positive or other positions the lens barrel of metal parts and effectively, thereby can not be applicable to resinous lens barrel, be difficult to obtain effective static countermeasure.Supposing, if apply the technology of patent documentation 1,2, needs to prepare separately the metal decorative panel as described in patent documentation 2, and is disposed at the front of lens barrel, and this is difficult to realize lightweight and the cost degradation as the lens barrel of object.
Utility model content
The purpose of this utility model is to provide a kind of lens barrel, and it can realize lightweight, cost degradation, and protects the electronic circuit, the electronic unit that are built in lens barrel to avoid electrostatic influence.
The utility model first aspect provides a kind of lens barrel, in lens barrel, by gap, be built-in with circuit substrate with in the outside inner space being communicated with, lens barrel comprises a plurality of ring components that consist of nonmetallic materials, on circuit substrate, in the face of being provided with grounding pattern on the position in the gap existing between a plurality of ring components.
Particularly, according to the lens barrel of the utility model first aspect, be formed with on the circuit substrate of electronic circuit portion, grounding pattern is formed at the position of outer side of the close lens barrel of this electronic circuit portion.
Particularly, according to the lens barrel of the utility model second aspect, circuit substrate extends along the circumferencial direction of lens barrel, and grounding pattern along the circumferential direction extends and arranges facing on the position in gap of this circuit substrate.
Particularly, according to the lens barrel of the utility model third aspect, gap is the gap of the ring-type of formation between set collar and operation ring, set collar extends setting annularly along the outer peripheral face of lens barrel, and operation ring extends setting annularly along this set collar, and is rotated operation.
Particularly, according to the lens barrel of the utility model first to fourth aspect, grounding pattern is electrically connected to the ground connection position that the camera of lens barrel is installed.
Particularly, according to the lens barrel of the utility model the 5th aspect,, the camera body that lens barrel contrasts camera can load and unload, grounding pattern is electrically connected to the department of assembly arranging in this lens barrel, and is electrically connected to the ground connection position that is arranged at the camera of camera body by this department of assembly.
Particularly, according to the utility model the firstth lens barrel to the 6th aspect, circuit substrate is flexible circuit board.
The utility model provides a kind of lens barrel on the other hand, in this lens barrel, being built-in with circuit substrate by gap with in the outside inner space being communicated with, on circuit substrate, in the position in the face of gap, is provided with grounding pattern.
The utility model provides a kind of lens barrel on the other hand, in this lens barrel, have counterrotating, the ring component at least being formed by the first and second insulating material, between these first and second ring components, be provided with the gap of regulation, gap connects inner space and the space outerpace of the circuit substrate that is built-in with lens barrel, and, in described lens barrel, grounding pattern is configured to when the static applying from space outerpace is delivered to described circuit substrate by described gap, this static is delivered to this grounding pattern arranging on this circuit substrate with the shortest distance.
Utility model effect
According to first, to the third aspect, from the outside of lens barrel or outer peripheral face side enters inside via gap and the static that is applied to electronic circuit etc. is delivered to the grounding pattern being arranged at circuit substrate when by gap, and be absorbed at this.Thus, even if do not use metal parts in lens barrel, and, even this metal parts is not arranged to electric connection structure, also can protect built-in electronic circuit, electronic unit to avoid electrostatic influence, can realize lightweight, the cost degradation of lens barrel.
And, according to first and the third aspect, in thering is the lens barrel of a plurality of ring components, even in the situation that there is the gap extending annularly between the plurality of ring component, circuit substrate extends along the circumferencial direction of lens barrel, grounding pattern along the circumferential direction extends setting in the position in the gap in the face of this circuit substrate, therefore, can utilize grounding pattern to absorb reliably by this gap and enter inner static.
And according to first aspect, grounding pattern is electrically connected to the ground connection position that the camera of lens barrel is installed, thereby, the static being absorbed by grounding pattern can be delivered to the ground connection position of camera body.Thus, static can not be trapped in lens barrel, and len lens barrel, avoids electrostatic influence reliably.
Accompanying drawing explanation
Fig. 1 is the outside drawing of lens barrel of the present utility model.
Fig. 2 is the longitdinal cross-section diagram along the optical axis of the lens barrel of Fig. 1.
Fig. 3 is the floor map of flexible circuit board.
Fig. 4 is the outside drawing of flexible circuit board that is built in the state of lens barrel.
Fig. 5 is the key diagram that makes the effect of static discharge.
Embodiment
Below, with reference to accompanying drawing, embodiment of the present utility model is described.Fig. 1 is configured to the utility model the outside drawing of the lens barrel of the exchange camera lens that single-lens reflex camera uses.In this embodiment, lens barrel 1 is configured to respect to the lens mount 21 that is arranged at the camera body 2 of schematic diagram and removably exchanges camera lens, at outer peripheral face, a rear end (side of camera body 2 in the direction near along lens axis Lx, identical below) position configuration the first set collar 11, at the front end (opposition side of camera body 2, identical below) position configuration second set collar 12 of side, between these first set collars 11 and the second set collar 12, configuration is as the focusing ring 14 of the operation ring of operation when focusing.As described later, this focusing ring 14 moves and is built in the lens group in lens barrel 1 and focuses when rotating by manual operation.And, at the rear end face of above-mentioned the second set collar 12, be fixed with not shown in Fig. 1 but the 3rd set collar 13, the three set collars 13 described later are configured for being arranged on the department of assembly of above-mentioned camera body 2.In this lens barrel 1, in order to realize lightweight, the above-mentioned first to the 3rd set collar 11,12,13 and focusing ring 14 are nonmetallic materials, are formed here by resin.In addition,, in order to obtain required intensity, the 3rd set collar 13 also can be formed by metal material.
Fig. 2 is the longitdinal cross-section diagram along the lens axis Lx of lens barrel 1.And, in Fig. 2, for aperture device and other mechanism less with the utility model direct relation, omit diagram.Ring in above-mentioned the second set collar 12 forms, above-mentioned the first set collar 11 is formed in the periphery of the second set collar 12 with the outer shroud of the arranged spaced of regulation, and above-mentioned the first set collar 11 and the second set collar 12 are integrated in rearward end.And as mentioned above, the 3rd set collar 13 being integrated in the rearward end of the second set collar 12 forms with respect to the above-mentioned lens mount 21 of camera body 2 department of assembly removably.
In the inner diameter zone of above-mentioned the second set collar 12, the first lens group 3 and the second lens group 4, arrange along the direction of lens axis Lx.These first lens group 3 and the second lens group 4 consist of one or more pieces camera lenses 31,41, supported respectively, and two lens group frames 32,42 utilize not shown screw etc. integrated by the first lens group frame 32, the second lens group frame 42.And relatively above-mentioned the second set collar 12 of above-mentioned lens group 3,4 is supported movably along lens axis direction.That is, the guide groove 12a radially connecting on the second set collar 12 extends along the direction of lens axis Lx, by above-mentioned the first lens group frame 32 and the second lens group frame 42, inserts this guide groove 12a respectively along the outstanding guide portion 33,43 of radial direction.Therefore, the first lens group frame 32 and the second lens group frame 42 in other words the first lens group 3 and the second lens group 4 become one, and guide sections 33,43 is guided by above-mentioned guide groove 12a, and can move along the direction of lens axis Lx.
Above-mentioned focusing ring 14 is disposed between above-mentioned the first set collar 11 and above-mentioned the second set collar 12, the leading section 14a of its outer peripheral face exposes to the periphery of lens barrel 1 between above-mentioned the first set collar 11 and the second set collar 12, and the leading section 14a that this exposes is rotated operation as operating portion around lens axis Lx.For this focusing ring 14 can be rotated, between focusing ring 14 and the first set collar 11 and the second set collar 12, guarantee respectively small gap d 1, d2.And, focusing ring 14 arranges internal diameter projection 14b at the inner peripheral surface of front, this internal diameter projection 14b engages with the circumferential groove 12b that is arranged at the outer peripheral face of above-mentioned the second set collar 12, focusing ring 14 is when being manually actuated, 14b is directed along circumferential groove 12b for this internal diameter projection, and is rotated along the periphery of the second set collar 12.
And at the side face of the rear end side of focusing ring 14, cam path 14c forms needed shape.From above-mentioned the first lens group frame 32, along the outstanding cam pin 34 of radial direction, with interpolation state, engage with this cam path 14c, when rotary-focusing ring 14, utilize engaging of cam path 14c and cam pin 34, the first lens group 3 moves along the direction of lens axis Lx, also along the direction of lens axis Lx, moves with the second lens group 4 of its one.By the movement of this first lens group 3 and the second lens group 4, carry out the focusing (focusing) of lens barrel 1, this is self-evident.
And, in the inner space of above-mentioned lens barrel 1, be in the inner space R divide forming, be built-in with the flexible circuit board 5 and the brush portion 6 that form needed electronic circuit here between above-mentioned focusing ring 14 and the first set collar 11.Brush portion 6 is maintained at the zone line of lens axis Lx direction of the outer peripheral face of above-mentioned focusing ring 14, though omitted detailed description, still, on matrix 61 along lens axis Lx direction arrange a plurality of, in this example, be four slip brushes 62.These slip brushes 62 slide on the surface of above-mentioned flexible circuit board 5 along with the rotation of focusing ring 14, electrically contact with the coding pattern 52a described later arranging at this flexible circuit board 5, for the variation by this electric contact state, detect the position of rotation of this focusing ring 14.
Flexible circuit board 5 in above-mentioned inner space R with the inner peripheral surface configuration along above-mentioned the first set collar 11 of above-mentioned brush portion 6 radially opposed modes.Fig. 3 is the stretch-out view of flexible circuit board 5, forms needed conductive pattern 52, and various electronic units 53 are installed on the roughly surface of banded thin insulcrete 51 with flexibility.Above-mentioned flexible circuit board 5 consists of the extension 5B of the relative narrow dimension that relatively forms the main part 5A of wide size and extend from this main part.On this main part 5A, in the region of the part of length direction, by above-mentioned conductive pattern 52, form coding pattern 52a.This coding pattern 52a consists of four row patterns corresponding to four slip brushes 62 with above-mentioned brush portion 6, by optionally electrically contacting output code signal with each slip brush 62.And, in the region of another part of the length direction of the 5A of aforementioned body portion, with circuit pattern 52b and the above-mentioned various electronic unit 53 being formed by above-mentioned conductive pattern 52, form the needed electronic circuit 5Aa of portion.At this electronic unit 53, comprise having because the electronic unit of the semiconductor element that comprises MIS structure is such as may be because of the electronic unit of the impaired possibility of static of system LSI or EEPROM etc.In the situation that have the lens barrel of motor in camera lens, the quantity of this electronic unit increases.And, in the 5A of aforementioned body portion, utilize a part for above-mentioned conductive pattern 52, along an edge of Width, form the roughly grounding pattern 52c of the required width dimensions of linearity.This grounding pattern 52c extends to spread all over the mode of the roughly total length of the 5A of aforementioned body portion.
Extension 5B at above-mentioned flexible circuit board 5 forms the wiring pattern 52d being formed by above-mentioned conductive pattern 52, and this wiring pattern 52d is electrically connected to the circuit pattern 52b of the 5A of aforementioned body portion, and its part is also electrically connected to above-mentioned grounding pattern 52c.And the leading section 5Ba of extension 5B forms circular-arc, above-mentioned wiring pattern 52d extends to this leading section 5Ba.The wiring pattern being connected with above-mentioned grounding pattern 52c among above-mentioned wiring pattern 52d forms earthy wiring pattern, is grounding pattern.Above coding pattern 52a, circuit pattern 52b, grounding pattern 52c, wiring pattern 52d are that above-mentioned conductive pattern 52 can utilize photoetching technique to form the flexible base, board with conducting film.
Fig. 4 is assembled in above-mentioned flexible circuit board 5 concept map of the state of lens barrel 1.Known to reference to Fig. 2, in the inner space R being formed between above-mentioned the first set collar 11 and focusing ring 14, the main part 5A of flexible circuit board 5 along the inner peripheral surface of the close front end of the first set collar 11, with by the inner peripheral surface in the relative region of the brush portion 6 of above-mentioned focusing ring 14 supports, so that conductive pattern 52 carries out towards inside bend state is circlewise built-in, and be fixedly supported on the inner peripheral surface of this first set collar 11.When this is built-in, above-mentioned slip brush 62 is disposed at circumference angle position, on this circumference angle position, when above-mentioned slip brush 62 rotates when the rotation along with focusing ring 14, can on the coding pattern 52a that is arranged at the 5A of aforementioned body portion, slide and electrically contact.And, as Fig. 5 amplifies the part that Fig. 2 is shown, the grounding pattern 52c that is arranged at this main part 5A is configured to the front that this grounding pattern 52c is positioned at lens axis Lx direction, make its face gap that this inner space R is communicated with the outside of lens barrel, the gap d 1 of generation between above-mentioned focusing ring 14 and above-mentioned the first set collar 11.
The extension 5B of above-mentioned flexible circuit board 5 extends and arranges in rear end side along lens axis Lx direction along the inner peripheral surface of the first set collar 11, is fixed on the medial surface of the rearward end of the second set collar 12.The flange 13a of the 3rd set collar 13 and the rear end face of this second set collar 12 that form above-mentioned department of assembly are integrated.When lens barrel 1 is installed on to above-mentioned camera body 2, this flange 13a is relative with above-mentioned lens mount 21, disposes the pin-shaped contact pad 7 connecting along lens axis Lx direction on this flange 13a.The leading section of this contact pad 7 is electrically connected to the leading section 5Ba of the extension 5B of above-mentioned flexible circuit board 5.And, a plurality of these contact pads 7 are set, one of them is electrically connected to wiring pattern as earthy contact pad, and this wiring pattern is connected with the above-mentioned grounding pattern 52c being arranged in the wiring pattern 52d of above-mentioned extension 5B.In addition, the rearward end of this contact pad 7 is cushion and exposes, when lens barrel 1 is installed on to camera body 2, with contact plug 8 Elastic Contact that are arranged at lens mount 21, the earthing potential position by this contact plug 8 and camera body 1, the housing that is generally camera body 1 are electrically connected to.
According to the lens barrel of this structure, when lens barrel 1 is installed to camera body 2, the 3rd set collar 13,Ji department of assembly is installed to the lens mount 21 of camera body 2, and meanwhile, the contact pad 7 of lens barrel 1 is electrically connected to the contact plug 8 of camera body 2.Thus, the flexible circuit board 5 in lens barrel 1 is electrically connected to camera body 2., the coding pattern 52a forming on the main part 5A of flexible circuit board 5, circuit pattern 52b, grounding pattern 52c are electrically connected to camera body 2 via wiring pattern 52d.Particularly, on the basis that the wiring pattern that grounding pattern 52c forms at the earthy wiring pattern with as in wiring pattern 52d is connected, be connected with the ground connection position of camera body 2.
By operation focusing ring 14, around lens axis Lx, rotate, the rotary angle position of cam path 14c changes, as mentioned above, due to engaging of cam path 14c and cam pin 34, the first lens group 3 and the second lens group 4 become one, and move along lens axis Lx direction, focus.When this is focused, rotation along with focusing ring 14, the also rotation integratedly of the slip brush 62 of the brush portion 6 being supported by this focusing ring 14, each brush 62 that slides slides on the coding pattern 52a of flexible circuit board 5, produces the coded signal corresponding with the position of rotation of focusing ring 14.Signal that this coded signal is stipulated in the 5Aa of electronic circuit portion is processed, on this basis, as the signal of focus information via the wiring pattern 52d of extension 5B and then output to camera body 2 via contact pad 7 and contact plug 8.
When carrying out the focusing operation that above-mentioned cameraman carries out or load and unload other operations such as lens barrel 1 on camera body 2, cameraman's health with static can be applied to lens barrel 1.This static applying is arranged in by being present in the gap of lens barrel 1, being gap d 1, the d2 producing between the first set collar 11 or the second set collar 12 and focusing ring 14, being applied to the part that the inner space of lens barrel 1 easily applies here.In this embodiment, in the inner space R of the first set collar 11 and focusing ring 14, form electronic circuit, thereby, particularly, easily by gap d 1, to the inside of lens barrel 1, apply static.Like this, when static is applied to electronic circuit, become the noise in the 5Aa of electronic circuit portion being located on flexible circuit board 5, in the 5Aa of this electronic circuit portion, produce misoperation, or produce the electrostatic breakdown of electronic unit 53.
Yet, in this lens barrel 1, in the face of the position of the first set collar 11 with the gap d 1 of focusing ring 14, dispose the whole girth that spreads all over this gap d 1 and be arranged on the grounding pattern 52c on flexible circuit board 5.Therefore, as shown in Figure 5, at the static S applying to the inner space R of lens barrel 1 by this gap d 1, during by gap d 1, be applied to this grounding pattern 52c being positioned at apart from this gap d 1 bee-line place, and be here absorbed.The static being absorbed by this grounding pattern 52c is delivered to earthy wiring pattern 52d from this grounding pattern 52c, and is delivered to from here contact pad 7.Then, the static that is delivered to contact pad 7 is delivered to the ground connection position of camera body 2 via contact plug 8, and from electric discharge earthward here.Like this, the static S applying to the inside of lens barrel 1 from the gap of the first set collar 11 and focusing ring 14 is all delivered to grounding pattern 52c and is absorbed, and, finally from contact pad 7, be delivered to camera body 2 and discharge, therefore, can prevent from being built in the misoperation that the static in the electronic circuit of lens barrel 1, the particularly 5Aa of electronic circuit portion causes, and prevent the electrostatic breakdown of electronic unit.
As this embodiment, if form the main structural components such as the set collar 11,12 of lens barrel 1 and focusing ring 14 with the insulating material of resin etc., even if suppose that the slip between structure member that the operation because of lens barrel 1 produces causes generation of static electricity, the static that also can prevent is applied to the 5Aa of electronic circuit portion of the inside of lens barrel 1 by gap, prevent misoperation and electrostatic breakdown.Thus, can realize static countermeasure, and realize the lightweight of lens barrel 1.And, in this embodiment, only in a part that is disposed at the flexible circuit board 5 of existing lens barrel, in the mode of the gap d 1 in the face of lens barrel 1, use a part for conductive pattern 52 to form grounding pattern 52c, just can realize static countermeasure, thereby, do not need the significantly design alteration of lens barrel 1, can realize cost degradation.When forming lens barrel 1 a part of with metal material, can not specify static to be where applied to, still, as this embodiment, position configuration grounding pattern 52c by the face of gap d 1, just can make static be applied to energetically safe grounding pattern 52c.
In embodiment, show following structure, inner space configuration flexible circuit board being arranged between focusing ring and the first set collar, prevents that the gap from producing between the focusing ring in this inner space and exterior and the first set collar from applying static to electronic unit.But, so long as the structure of the lens barrel of the structure that the inner space of built-in flexible circuit board is communicated with outside by gap, for example, inner space configuration flexible circuit board being arranged between zoom ring and set collar, absorbs the static applying by the gap producing between these zoom rings and set collar.And, example at the lens barrel of built-in flexible circuit board shown in embodiment, but, even in the situation that the lens barrel of the little common circuit substrate of built-in flexibility, by the position configuration grounding pattern in the gap in the face of producing in lens barrel, also can obtain the effect that absorbs and even emit static.
As long as can apply the static of the internal electronics portion that will enter into lens barrel in lens barrel by the gap producing, just do not need to spread all over the circumferencial direction in this gap whole region, be that the whole circumferential area of lens barrel forms grounding pattern.Yet static may apply with uncertain road inner radial sometimes, therefore, in order to realize the static countermeasure that reliability is high, optimal way is, spread all over this gap circumferencial direction whole region and form grounding pattern.And, for the static that prevents from being applied to grounding pattern is applied to from grounding pattern circuit pattern, the electronic unit that the signal of electronic circuit portion is used, optimal way is, in can being built in the range of size of the flexible circuit board in lens barrel, in the region of trying one's best away from electronic circuit portion, form grounding pattern.And the capacity while absorbing static in order to increase also improves the discharge effect of static, optimal way is, in the scope that grounding pattern is allowed in space, to increase pattern area as far as possible.If possible, can spread all over surround the roughly complete cycle of flexible circuit board, at least the region of the periphery of electronic unit 53 forms grounding pattern, like this, when assembling flexible circuit board in lens barrel, position, the direction that can not consider gap, can improve the degree of freedom of the design of lens barrel.Particularly, to the situation of assembling flexible circuit board on a ring component of counterrotating ring component, utilize rotation relatively to change the position in gap, be also effective.
In the embodiment described above, the example of the lens barrel that is applicable to camera lens switch type camera is shown, still, to comprising, the lens barrel of lens barrel and the integrated collapsible lens barrel of camera body also can be suitable for to the utility model.And if possess a plurality of circuit substrates mounting electronic parts form the lens barrel of electronic circuit portion respectively, optimal way is to form respectively grounding pattern on each circuit substrate.In this case, importantly, the grounding pattern of each circuit substrate is configured in the position of the outer side opening in the end of facing from a side of outside induction static, the gap producing lens barrel.
In the above description, to in order to realize the lightweight of lens barrel and cost degradation with resin, be that the embodiment that nonmetallic materials form the structure member of lens barrel is illustrated, but, obviously, technological thought of the present utility model is in the situation that a part for said structure parts is that the lens barrel being formed by metal material is also effective.
The utility model can be effectively for being built-in with the lens barrel that the lens barrel of the electronic circuit of static fragility, electronic unit, particularly structure member are formed by nonmetallic materials.
Symbol description
1 lens barrel 2 camera body
3 first lens group 4 second lens combination
5 flexible circuit board 6 brush portions
7 contact pad 11 first set collars
12 second set collar 13 the 3rd set collars
14 focusing ring 21 lens mounts
22 contact plug 51 insulcretes
52 conductive pattern 52a coding patterns
52b circuit pattern 52c grounding pattern
52d wiring pattern 53 electronic units
62 disturbance brush R inner spaces
D1, d2 gap L x lens axis

Claims (9)

1. a lens barrel, is being built-in with circuit substrate by gap with in the outside inner space being communicated with, and described lens barrel is characterised in that,
Described lens barrel comprises a plurality of ring components that consist of nonmetallic materials, on described circuit substrate, in the face of being present on the position in the gap between described a plurality of ring component, is being provided with grounding pattern.
2. lens barrel according to claim 1, is characterized in that, is formed with electronic circuit portion on described circuit substrate, and described grounding pattern is formed at the position of outer side of the lens barrel of this electronic circuit portion.
3. lens barrel according to claim 2, is characterized in that, described circuit substrate extends along the circumferencial direction of lens barrel, and described grounding pattern along the circumferential direction extends and arranges facing on the position in described gap of this circuit substrate.
4. lens barrel according to claim 3, it is characterized in that, described gap is the gap of the ring-type of formation between set collar and operation ring, described set collar extends setting annularly along the outer peripheral face of lens barrel, described operation ring extends setting annularly along this set collar, and is rotated operation.
5. according to the lens barrel described in any one in claim 1 to 4, it is characterized in that, described grounding pattern is electrically connected to the ground connection position that the camera of lens barrel is installed.
6. lens barrel according to claim 5, it is characterized in that, described lens barrel can load and unload with respect to the camera body of described camera, described grounding pattern is electrically connected to the department of assembly that is arranged at this lens barrel, and is electrically connected to the ground connection position that is arranged at the camera of this camera body by this department of assembly.
7. according to the lens barrel described in any one in claim 1 to 4, it is characterized in that, described circuit substrate is flexible circuit board.
8. a lens barrel is built-in with circuit substrate in the inner space by gap and exterior, and described lens barrel is characterised in that, on described circuit substrate, in the face of on the position in described gap, is being provided with grounding pattern.
9. a lens barrel, comprises ring component counterrotating, that at least consist of first and second insulating material, is provided with the gap of regulation between these first and second ring components, and described lens barrel is characterised in that,
The inner space that is built-in with circuit substrate and the space outerpace of described gap connection lens lens barrel, and, in described lens barrel, grounding pattern is configured to when the static applying from space outerpace is delivered to described circuit substrate by described gap, and this static is delivered to this grounding pattern arranging on this circuit substrate with the shortest distance.
CN201320224571.4U 2012-06-26 2013-04-27 Lens barrel Expired - Lifetime CN203422515U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012142578A JP5958116B2 (en) 2012-06-26 2012-06-26 Lens barrel
JP2012-142578 2012-06-26

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Publication Number Publication Date
CN203422515U true CN203422515U (en) 2014-02-05

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CN201320224571.4U Expired - Lifetime CN203422515U (en) 2012-06-26 2013-04-27 Lens barrel

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JP (1) JP5958116B2 (en)
CN (1) CN203422515U (en)

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