CN110515172A - Projection device and camera lens - Google Patents
Projection device and camera lens Download PDFInfo
- Publication number
- CN110515172A CN110515172A CN201910828787.3A CN201910828787A CN110515172A CN 110515172 A CN110515172 A CN 110515172A CN 201910828787 A CN201910828787 A CN 201910828787A CN 110515172 A CN110515172 A CN 110515172A
- Authority
- CN
- China
- Prior art keywords
- body tube
- gear ring
- lens barrel
- wall
- projection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
- G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects
Abstract
This application discloses a kind of projection device and camera lenses, belong to projection art.The projection device includes: light source；Optical-mechanical system, optical-mechanical system are connect with light source；Camera lens, including body tube, middle group's lens barrel, gear ring, driving mechanism and controller；Gear ring is limited in the inner cavity of the second end of body tube, and can be rotated relative to the circumferencial direction of body tube；The inner wall of the second end of body tube is provided with the guide groove axially extended, and the outer wall of middle group's lens barrel is provided with boss, and the inner cavity of the second end of body tube is protruded into one end of middle group's lens barrel, and is threadedly coupled with gear ring, and boss is stuck in guide groove；Driving mechanism is fixed on the outer wall of body tube, and controller is electrically connected with driving mechanism, and driving mechanism can drive gear ring rotation based on controller.The application by controller control driving mechanism, and then drive gear ring rotation, finally realize in group's lens barrel adjustment, realize the accurate adjusting of focal length, have the effect of raising projection device image quality.
Description
Technical field
This application involves projection art, in particular to a kind of projection device and camera lens.
Background technique
Projection device is a kind of display equipment to generate projected picture.Mainly draw at present including optics in projection device
It holds up and camera lens, the light beam that light engine is used to provide itself is modulated, by modulated beam exit to camera lens, camera lens is used
It is imaged in based on the modulated light beam of light engine.Since camera lens is the important component of projection device imaging, passing through mirror
When head is imaged, if there is deflecting or position deviation in the precision element that camera lens includes, it is easy to imaging picture be caused to go out
Now fuzzy or situation out of focus.At this point it is possible to which the focusing function by camera lens is adjusted imaging picture, to improve projection
The quality of the projected picture of equipment.
Currently, being required to operator when camera lens is focused and being operated manually.Specifically, operator according to
The experience of itself and the observation of eyes focus to camera lens.However when operator's progress manual focusing, operator is spent
The time taken is longer, and is easy to because human factor causes the focusing accuracy of camera lens lower, and then makes the image quality of camera lens
It can not reach best, and then cause the projection quality of projection device that cannot reach best.
Summary of the invention
This application provides a kind of projection device and camera lens, projection device in the related technology and lens imaging matter can solve
Measure low problem.The technical solution is as follows:
On the one hand, this application provides a kind of projection device, the projection device includes:
Light source；
Optical-mechanical system, the optical-mechanical system are connect with the light source；
Camera lens, including body tube, middle group's lens barrel, gear ring, driving mechanism and controller；
The first end of the body tube is connect with the optical-mechanical system, and the gear ring limit is the second of the body tube
The inner cavity at end, and can be rotated relative to the circumferencial direction of the body tube；
The inner wall of the second end of the body tube is provided with the guide groove axially extended, and the outer wall of middle group's lens barrel is set
It is equipped with boss, the inner cavity of the second end of the body tube is protruded into one end of middle group's lens barrel, and connects with the gear ring screw thread
It connects, the boss is stuck in the guide groove；
The driving mechanism is fixed on the outer wall of the body tube, and the controller is electrically connected with the driving mechanism, institute
The gear ring rotation can be driven based on the controller by stating driving mechanism.
In one possible implementation, the driving mechanism includes driving motor and driving gear；
The driving motor is electrically connected with the controller, and the driving motor is fixed on the outer wall of the body tube,
The output axis connection of the driving gear and the driving motor, is provided with through-hole, the driving on the side wall of the body tube
Gear is engaged by the through-hole with the gear ring.
Optionally, the camera lens further includes position-limit mechanism；
The inner wall of the second end of the body tube is in step-like, and step surface is towards the second end of the body tube, described
Position-limit mechanism is fixedly connected with the body tube, and the position-limit mechanism gear ring can be limited in the step surface and
Between the position-limit mechanism.
Optionally, the position-limit mechanism includes multiple tablettings；
Be provided on the side wall of the body tube with the multiple tabletting multiple fixation holes correspondingly, each tabletting
First end passes through corresponding fixation hole, and is fixedly connected with the body tube, and the second end of each tabletting can be to the gear
The end face of one end on ring far from the step surface is limited.
Optionally, the quantity of the multiple tabletting is three, and three tablettings uniformly divide along the circumferencial direction of the body tube
Cloth.
Optionally, the position-limit mechanism includes position-limiting drum, and the position-limiting drum protrudes into the second end of the body tube, and with institute
It states body tube to be fixedly connected, the gear ring can be stuck between the step surface and the end face of the position-limiting drum.
Optionally, the camera lens further includes thrust ball bearing, and thrust ball bearing limit is in the step surface and described
Between gear ring.
Optionally, it is provided with internal screw thread on the gear ring, is used to connect with the gear ring on middle group's lens barrel
One end is provided with external screw thread, the gear ring and middle group's lens barrel and is threadedly coupled by the internal screw thread and the external screw thread.
Optionally, the length of the guide groove is less than or equal to length threshold.
On the other hand, this application provides a kind of camera lens, the camera lens includes: body tube, middle group's lens barrel, gear ring, drive
Motivation structure and controller；
The first end of the body tube is connect with the optical-mechanical system, and the gear ring limit is the second of the body tube
The inner cavity at end, and can be rotated relative to the circumferencial direction of the body tube；
The inner wall of the second end of the body tube is provided with the guide groove axially extended, and the outer wall of middle group's lens barrel is set
It is equipped with boss, the inner cavity of the second end of the body tube is protruded into one end of middle group's lens barrel, and connects with the gear ring screw thread
It connects, the boss is stuck in the guide groove；
The driving mechanism is fixed on the outer wall of the body tube, and the controller is electrically connected with the driving mechanism, institute
The gear ring rotation can be driven based on the controller by stating driving mechanism.
The beneficial effect of technical solution provided by the present application at least may include:
In the application, since gear ring limit is in the inner cavity of the second end of body tube, and gear ring can be with respect to body tube
Circumferencial direction rotation, therefore gear ring can be rotated with respect to body tube in situ.Since one end of middle group's lens barrel is protruded into
The inner cavity of the second end of body tube, and be threadedly coupled with gear ring, and the boss being arranged on the outer wall of middle group's lens barrel is stuck in primary mirror
On the inner wall of cylinder in the axially directed slot that is arranged, therefore in gear ring rotation, limit by guide groove to boss can make
Synchronous rotary will not occur for middle group's lens barrel, so that displacement can only be generated along the axial of itself, realize the adjusting to lens focus.
In addition, since driving mechanism can drive gear ring rotation based on controller, so as to the realization pair under the action of controller
While the focal length automatic adjustment of camera lens, realizes the accurate adjusting of focusing, and then improve the image quality of camera lens, set projection
Standby projection quality reaches best.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of projection device provided by the embodiments of the present application；
Fig. 2 is a kind of structural schematic diagram of camera lens provided by the embodiments of the present application；
Fig. 3 is a kind of structural schematic diagram of driving mechanism provided by the embodiments of the present application；
Fig. 4 is the configuration schematic diagram of a kind of body tube and gear ring provided by the embodiments of the present application；
Fig. 5 is the configuration schematic diagram of a kind of gear ring provided by the embodiments of the present application and middle group's mirror lens barrel.
Appended drawing reference:
1: light source；2: optical-mechanical system；3: camera lens；
31: body tube；32: middle group's lens barrel；33: gear ring；34: driving mechanism；35: controller；36: position-limit mechanism；
311: guide groove；312: through-hole；313: fixation hole；321: boss；341: driving motor；342: driving gear；
361: tabletting.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with attached drawing to the application embodiment party
Formula is described in further detail.
Fig. 1 illustrates a kind of structural schematic diagram of projection device of the embodiment of the present application, and Fig. 2 illustrates the embodiment of the present application
A kind of camera lens structural schematic diagram.As depicted in figs. 1 and 2, which includes: light source 1；Optical-mechanical system 2, optical-mechanical system
2 connect with light source 1；Camera lens 3, including body tube 31, middle group's lens barrel 32, gear ring 33, driving mechanism 34 and controller 35；Primary mirror
The first end of cylinder 31 is connect with optical-mechanical system 2, and gear ring 33 is limited in the inner cavity of the second end of body tube 31, and can be led relatively
The circumferencial direction of lens barrel 31 rotates；The inner wall of the second end of body tube 31 is provided with the guide groove 311 axially extended, middle group's mirror
The outer wall of cylinder 32 is provided with boss 321, and the inner cavity of the second end of body tube 31, and and gear ring are protruded into one end of middle group's lens barrel 32
33 are threadedly coupled, and boss 321 is stuck in guide groove 311；Driving mechanism 34 is fixed on the outer wall of body tube 31, controller 35 and drive
Motivation structure 34 is electrically connected, and driving mechanism 34 can drive gear ring 33 to rotate based on controller 35.
In the embodiment of the present application, since gear ring 33 is limited in the inner cavity of the second end of body tube 31, and 33 energy of gear ring
Enough circumferencial directions relative to body tube 31 rotate, therefore gear ring 33 can be rotated with respect to body tube 31 in situ.Due to
The inner cavity of the second end of body tube 31 is protruded into one end of middle group's lens barrel 32, and is threadedly coupled with gear ring 33, and middle group's lens barrel 32
Outer wall on the boss 321 that is arranged be stuck in the axially directed slot 311 being arranged on the inner wall of body tube 31, therefore in gear ring 33
When rotation, limit by guide groove 311 to boss 321 can make middle group's lens barrel 32 that synchronous rotary will not occur, thus can only
Axial along itself generates displacement, realizes the adjusting to 3 focal length of camera lens.In addition, since driving mechanism 34 can be based on control
Device 35 drives gear ring 33 to rotate, so as to realize the same of the focal length automatic adjustment to camera lens 3 under the action of controller 35
When, it realizes the accurate adjusting of focusing, and then improve the image quality of camera lens 3, the projection quality of projection device is made to reach best.
Wherein, can be connected by screw thread between light source 1 and optical-mechanical system 2 and between optical-mechanical system 2 and body tube 31
The mode connect achieves a fixed connection, it is of course also possible to achieve a fixed connection by other means, the embodiment of the present application does not do this
It limits.
It should be noted that light source 1 can be monochromatic source, or polychromatic source.The specific structure of optical-mechanical system 2
The relevant technologies can be referred to, details are not described herein for the embodiment of the present application.
Wherein, gear ring 33 can be the gear ring 33 with the wholecircle gear teeth, or with the endless full circle gear teeth
Gear ring 33.The gear ring 33 of the wholecircle gear teeth can be adapted for significantly adjusting in group's lens barrel 32 the case where being displaced, it is imperfect
The gear ring 33 of the circle gear teeth can be adapted for adjusting by a small margin in group's lens barrel 32 the case where being displaced.
In the embodiment of the present application, as shown in Figure 2, Figure 3 and Figure 4, driving mechanism 34 may include driving motor 341 and driving
Gear 342.Driving motor 341 is electrically connected with controller 35, and driving motor 341 is fixed on the outer wall of body tube 31, sliding tooth
The output axis connection of 342 with driving motor 341 is taken turns, through-hole 312 is provided on the side wall of body tube 31, driving gear 342 passes through
Through-hole 312 is engaged with gear ring 33.
Since driving motor 341 is electrically connected with controller 35, the control artificially triggered is received in controller 35 in this way and is referred to
After order, which can be converted to the start stop signal of driving motor 341, and then driving motor is controlled by start stop signal
341 start and stop, accurately to control the starting time span of driving motor 341.It is defeated due to driving gear 342 and driving motor 341
Axis connection out, and gear 342 is driven to engage with gear ring 33, it will drive sliding tooth in 341 start-up course of driving motor in this way
342 rotation of wheel, and then realize the rotation of gear ring 33.Due to can accurately control opening for driving motor 341 by controller 35
Between stopping time, so as to accurately control the rotating cycle of gear ring 33, accurately controlled with the axial displacement of centering group lens barrel 32
System.
Wherein, driving gear 342 can be connected by key on the output shaft for being fixed on driving motor 341, to pass through driving
The rotation of the output shaft of motor 341 drives driving 342 synchronous rotary of gear.Since driving motor 341 is fixed on body tube 31
Outer wall, gear ring 33 are located at the inner cavity of body tube 31, in order to realize engaging for driving gear 342 and gear ring 33, body tube 31
Side wall on the through-hole 312 that is arranged can be the through-hole 312 that extends along the circumferencial direction of body tube 31, to guarantee that gear ring 33 exists
At through-hole 312 can exposed a part of gear teeth, and then guarantee driving gear 342 a part of gear teeth can with it is exposed on gear ring 33
A part of gear teeth perfection engagement, avoid driving gear 342 and gear ring 33 between occur slippage the phenomenon that.
In the embodiment of the present application, as shown in figure 4, camera lens 3 can also include position-limit mechanism 36.The second end of body tube 31
Inner wall is in step-like, and step surface, towards the second end of body tube 31, position-limit mechanism 36 is fixedly connected with body tube 31, and is limited
Mechanism 36 can limit gear ring 33 between step surface and position-limit mechanism 36.In this way, position-limit mechanism 36 and platform can be passed through
The limit of terrace limits gear ring 33 in the inner cavity of main lens 3.
Wherein, the internal diameter of step surface can be less than gear ring 33 outer diameter, with realize step surface on gear ring 33 backwards
The end face of the second end of body tube 31 is limited.
And when by position-limit mechanism 36 to being limited on gear ring 33 towards the end face of the second end of body tube 31, one
In a little embodiments, position-limit mechanism 36 may include multiple tablettings 361.It is provided on the side wall of body tube 31 and multiple tablettings 361
One-to-one multiple fixation holes 313, the first end of each tabletting 361 pass through corresponding fixation hole 313, and solid with body tube 31
The second end of fixed connection, each tabletting 361 can limit the end face of one end on gear ring 33 far from step surface.
Illustratively, the quantity of multiple tablettings 361 can be three, and three tablettings 361 are equal along the circumferencial direction of body tube 31
Even distribution, to carry out more stable limit to gear ring 33 by equally distributed three tablettings 361.Correspondingly, with multiple pressures
The quantity of the one-to-one multiple fixation holes 313 of piece 361 may be three, circumference of three fixation holes 313 along body tube 31
Direction is uniformly distributed.
It should be noted that according to multiple fixation holes 313 relative to gear ring 33 close to the end face of 31 second end of body tube
Distance different situations, tabletting 361 can be designed to different shapes.
When multiple fixation holes 313 and gear ring 33 close to the end face of 31 second end of body tube in the same plane when, each
Tabletting 361 can be designed to L shape, that is to say that each tabletting 361 includes first segment connected vertically and second segment.This
When, 361 first segment of tabletting can pass through corresponding fixation hole 313 from 31 outer wall of body tube, and to close main on gear ring 33
The end face of the second end of lens barrel 31 is limited, and the second segment of tabletting 361 is tightly attached to the outer wall of body tube 31, and passes through screw
It is fixed on body tube 31.
Wherein, through-hole 312 can be set on the second segment of tabletting 361, be provided on the outer wall of body tube 31 corresponding
Threaded hole, and then the second segment of tabletting 361 can be fixed on body tube 31 with screw, to realize tabletting 361 and body tube
While 31 fixation, limit of the tabletting 361 to gear ring 33 is realized.
It should be noted that can also be not provided on the side wall of body tube 31 solid when each tabletting 361 designs at L-shaped
Determine hole 313, at this point it is possible to which the first segment by tabletting 361 limits the end face of gear ring 33, and then is connected by screw to
Mode the second segment of tabletting 361 is fixed on the inner wall of body tube 31, as long as may be implemented the focal length of middle group's lens barrel 32
Adjusting.
When the end surfaces one of plane and the second end of body tube 31 close on gear ring 33 where multiple fixation holes 313
Section apart from when, each tabletting 361 can be designed to three sections vertically bent, and that is to say that each tabletting 361 may each comprise the
One section, second segment and linkage section, first segment and second segment are vertical with the both ends of linkage section respectively to be connect, and first segment and second segment
The two sides of linkage section are respectively facing, the length of linkage section is equal to the distance length at interval.At this point it is possible to pass through tabletting 361 the
One section limits the end face of gear ring 33, and the second segment of tabletting 361 is passed through corresponding fixation hole 313, with realization pair
The fixation of the second segment of each tabletting 361.
Wherein, when fixed to the second segment of each tabletting 361, illustratively, multiple fixation holes 313 are axial along body tube 31
The width in direction can be equal with the thickness of the second segment of tabletting 361, in this way, the second segment of each tabletting 361 can be from primary mirror
The inside of cylinder 31 is embedded in corresponding fixation hole 313, to realize the second segment of each tabletting 361 and corresponding 313 transition of fixation hole
Cooperation or interference fit.
In further embodiments, position-limit mechanism 36 may include position-limiting drum, and position-limiting drum protrudes into the second end of body tube 31,
And be fixedly connected with body tube 31, gear ring 33 can be stuck between step surface and the end face of position-limiting drum.
Position-limiting drum can be set to the hollow tubular structure of both ends open, and an end face of position-limiting drum can be with gear ring 33
The upper end thereof contacts far from step surface carry out axial limiting to gear ring 33.Position-limiting drum is fixedly connected with mode with body tube 31
It can be threaded connection.
Illustratively, internal screw thread can be set in 31 inner wall of body tube, and external screw thread can be set in the outer wall of position-limiting drum, to realize
The threaded connection of position-limiting drum and body tube 31.
It should be noted that in order to realize position-limiting drum to the limit of the end face of the second end of body tube 31 close on gear ring 33
The outer diameter of position, gear ring 33 can be greater than the internal diameter of position-limiting drum, and be less than or equal to the outer diameter of position-limiting drum.
In addition, position-limit mechanism 36 can also be other kinds of fixed structure, as long as can play the role of limiting gear ring 33
, the embodiment of the present application do not limit this.
It should be noted that being limited by step surface on body tube 31 and position-limit mechanism 36 to gear ring 33
Afterwards, in order to avoid frictional force is larger when rotated for gear ring 33, camera lens 3 can also include thrust ball bearing, thrust ball bearing limit
Position is between step surface and gear ring 33.
Wherein, thrust ball bearing may include two bearing races and step up the rolling element among two bearing races, and two
Bearing race can be based on rolling element with respect to flexible rotating.It is contacted in this way, one end of thrust ball bearing can be fixed with step surface, separately
It one end can be with the fixed contact in the end face of gear ring 33.When gear ring 33 rotates, on thrust ball bearing and step face contact
The bearing race that one bearing race is fixed and gear ring 33 contacts is rotated together with gear ring 33, so as to keep away
Exempt from the frictional force between gear ring 33 and step surface.
It certainly, in actual use, can also be in gear ring in order to reduce the frictional force between gear ring 33 and step surface
Lubricating grease is added at 33 both ends, or takes other lubricant methods, avoid between gear ring 33 and the step surface of body tube 31, with
And friction between gear ring 33 and position-limit mechanism 36 and cause the abrasion of each part.
In the embodiment of the present application, as shown in figure 5, internal screw thread can be set on gear ring 33, it is used on middle group's lens barrel 32
External screw thread has can be set in the one end connecting with gear ring 33, and gear ring 33 and middle group's lens barrel 32 pass through internal screw thread and external screw thread spiral shell
Line connection.In this way, the fit system that can be connected through a screw thread can gear ring 33 rotate when promote in group's lens barrel 32 generate
Axial displacement.
Wherein, due to one circle of the rotation of gear ring 33, middle group's lens barrel 32 can be made to generate the displacement of a screw pitch, and gear ring
The circumferential displacement of 33 rotation, one circle is much larger than the axial displacement that middle group's lens barrel 32 generates, in this way if driving mechanism 34 is with moving gear
Ring 33 produces certain error when operating, and then will become smaller displacement error when in this error propagation to middle group's lens barrel 32, from
And in can accurately adjusting group's lens barrel 32 displacement.
It, can also be with it should be noted that the length of the internal screw thread on gear ring 33 can be equal with the height of gear ring 33
Less than the height of gear ring 33, as long as the length of internal screw thread can satisfy the adjusting of the focal length of middle group's lens barrel 32 i.e. on gear ring 33
Can, the embodiment of the present application does not limit this.
The length for the internal screw thread being arranged in the externally threaded length that is arranged on middle group's lens barrel 32, gear ring 33 and middle group
The maximum distance of the focus adjustment of lens barrel 32 can be equal, and the mode being connected through a screw thread in this way is by gear ring 33 and middle group's lens barrel
32 when connecting, and can realize centering group mirror more completely using the screw thread being arranged on gear ring 33 and middle group's lens barrel 32
The adjusting of the focal length of cylinder 32.
Certainly, three distance between there may also be certain errors, as long as in not influencing the focal length of group's lens barrel 32 tune
Section.
Since the gear teeth and internal screw thread of gear ring 33 are independent of each other, the position of the gear teeth in radial directions and internal screw thread that is to say
Setting can be overlapped, therefore can be adapted for the lesser gear ring 33 of height on gear ring 33 the case where setting internal screw thread, in order to
Reduce the size of camera lens 3.
Certainly, external screw thread also can be set on gear ring 33.It at this time can be in 33 outer wall of gear ring close to the one of step surface
External screw thread is arranged in the end setting gear teeth, the other end.In one end on middle group's lens barrel 32 for connecting with gear ring 33 can be set
Screw thread.
The length for the internal screw thread being arranged in the length of the internal screw thread being arranged on middle group's lens barrel 32, gear ring 33 and middle group
The maximum distance of the focus adjustment of lens barrel 32 can be equal, and the mode being connected through a screw thread in this way is by gear ring 33 and middle group's lens barrel
32 when connecting, and can realize centering group mirror more completely using the screw thread being arranged on gear ring 33 and middle group's lens barrel 32
The adjusting of the focal length of cylinder 32.
Certainly, three distance between there may also be certain errors, as long as in not influencing the focal length of group's lens barrel 32 tune
Section.
In the embodiment of the present application, the length of guide groove 311 is less than length threshold.
Due to the finite volume of camera lens 3, each components and parts assembling for forming camera lens 3 is compacter, the axial direction of middle group's lens barrel 32
Displacement cannot be adjusted infinitely, that is to say that the axial displacement of middle group's lens barrel 32 should be limited.
Wherein, the axial displacement of middle group's lens barrel 32 can be limited in 1mm between 2mm according to the actual situation, namely
It is length threshold can be any one number in 1mm to 2mm.
Wherein, as shown in Figure 4 and Figure 5, the axial displacement of group's lens barrel 32 and locating in being limited by guide groove 311
Position.The boss 321 of middle group's lens barrel 32 is stuck in guide groove 311, when middle group's lens barrel 32 is mobile, when the boss 321 of outer wall contacts
When to the end of guide groove 311, middle group's lens barrel 32 can stop moving because of the blocking of 311 end of guide groove, and then hinder tooth
The rotation of torus 33, the resistance that such gear ring 33 receives can pass on driving gear 342, to be exported by driving motor 341
Axis stops operating.
As an example, the length threshold of guide groove 311 can be 1.2mm, it can by middle group's lens barrel 32 in axial direction
On maximum displacement be limited to 1.2mm.Certainly, length threshold may be set according to actual conditions, the embodiment of the present application to this not
It limits.
In the embodiment of the present application, since gear ring limit is in the inner cavity of the second end of body tube, and gear ring can be opposite
The circumferencial direction of body tube rotates, therefore gear ring can be rotated with respect to body tube in situ.Due to the one of middle group's lens barrel
The inner cavity of the second end of body tube, and the boss card for being threadedly coupled with gear ring, and being arranged on the outer wall of middle group's lens barrel are protruded into end
In the axially directed slot being arranged on the inner wall of body tube, therefore in gear ring rotation, limit by guide groove to boss,
It can make middle group's lens barrel that synchronous rotary will not occur, so that displacement can only be generated along the axial of itself, realize to lens focus
Adjusting.In addition, since driving mechanism can drive gear ring rotation based on controller, so as under the action of controller
While realizing the focal length automatic adjustment to camera lens, realizes the accurate adjusting of focusing, and then improve the image quality of camera lens, make
The projection quality of projection device reaches best.
Fig. 2 illustrates a kind of structural schematic diagram of camera lens of the embodiment of the present application, as shown in Fig. 2, camera lens 3 includes: primary mirror
Cylinder 31, middle group's lens barrel 32, gear ring 33, driving mechanism 34 and controller 35；The first end and optical-mechanical system 2 of body tube 31 connect
It connects, gear ring 33 is limited in the inner cavity of the second end of body tube 31, and can be rotated relative to the circumferencial direction of body tube 31；Primary mirror
The inner wall of the second end of cylinder 31 is provided with the guide groove 311 axially extended, and the outer wall of middle group's lens barrel 32 is provided with boss 321,
The inner cavity of the second end of body tube 31 is protruded into one end of middle group's lens barrel 32, and is threadedly coupled with gear ring 33, and boss 321, which is stuck in, leads
Into slot 311；Driving mechanism 34 is fixed on the outer wall of body tube 31, and controller 35 is electrically connected with driving mechanism 34, driving mechanism
34 can drive gear ring 33 to rotate based on controller 35.
It should be noted that body tube involved in the embodiment of the present application, middle group's lens barrel, gear ring, driving mechanism and
The structure of controller can with described in above-described embodiment body tube, middle group's lens barrel, gear ring, driving mechanism and controller knot
Structure is same or similar, and the embodiment of the present application repeats no more this.
In the embodiment of the present application, since gear ring limit is in the inner cavity of the second end of body tube, and gear ring can be opposite
The circumferencial direction of body tube rotates, therefore gear ring can be rotated with respect to body tube in situ.Due to the one of middle group's lens barrel
The inner cavity of the second end of body tube, and the boss card for being threadedly coupled with gear ring, and being arranged on the outer wall of middle group's lens barrel are protruded into end
In the axially directed slot being arranged on the inner wall of body tube, therefore in gear ring rotation, limit by guide groove to boss,
It can make middle group's lens barrel that synchronous rotary will not occur, so that displacement can only be generated along the axial of itself, realize to lens focus
Adjusting.In addition, since driving mechanism can drive gear ring rotation based on controller, so as under the action of controller
While realizing the focal length automatic adjustment to camera lens, the accurate adjusting of focusing is realized, and then improve the image quality of camera lens.
The foregoing is merely the illustrative embodimentss of the application, all in spirit herein not to limit the application
Within principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this application.
Claims (10)
1. a kind of projection device, which is characterized in that the projection device includes:
Light source (1)；
Optical-mechanical system (2), the optical-mechanical system (2) connect with the light source (1)；
Camera lens (3), including body tube (31), middle group's lens barrel (32), gear ring (33), driving mechanism (34) and controller (35)；
The first end of the body tube (31) is connect with the optical-mechanical system (2), and gear ring (33) limit is in the primary mirror
The inner cavity of the second end of cylinder (31), and can be rotated relative to the circumferencial direction of the body tube (31)；
The inner wall of the second end of the body tube (31) is provided with the guide groove (311) axially extended, middle group's lens barrel
(32) outer wall is provided with boss (321), and the second end of the body tube (31) is protruded into one end of middle group's lens barrel (32)
Inner cavity, and be threadedly coupled with the gear ring (33), the boss (321) is stuck in the guide groove (311)；
The driving mechanism (34) is fixed on the outer wall of the body tube (31), the controller (35) and the driving mechanism
(34) it is electrically connected, the driving mechanism (34) can drive gear ring (33) rotation based on the controller (35).
2. projection device according to claim 1, which is characterized in that the driving mechanism (34) includes driving motor
(341) and gear (342) are driven；
The driving motor (341) is electrically connected with the controller (35), and the driving motor (341) is fixed on the primary mirror
The outer wall of cylinder (31), the output axis connection of driving gear (342) and the driving motor (341), the body tube (31)
Side wall on be provided with through-hole (312), the driving gear (342) is nibbled with the gear ring (33) by the through-hole (312)
It closes.
3. projection device according to claim 1, which is characterized in that the camera lens (3) further includes position-limit mechanism (36)；
The inner wall of the second end of the body tube (31) is in step-like, and step surface is towards the second end of the body tube (31),
The position-limit mechanism (36) is fixedly connected with the body tube (31), and the position-limit mechanism (36) can be by the gear ring
(33) limit is between the step surface and the position-limit mechanism (36).
4. projection device according to claim 3, which is characterized in that the position-limit mechanism (36) includes multiple tablettings
(361)；
Be provided on the side wall of the body tube (31) with the one-to-one multiple fixation holes (313) of the multiple tabletting (361),
The first end of each tabletting (361) passes through corresponding fixation hole (313), and is fixedly connected with the body tube (31), each pressure
The second end of piece (361) can limit the end face of one end on the gear ring (33) far from the step surface.
5. projection device according to claim 4, which is characterized in that the quantity of the multiple tabletting (361) be three, three
A tabletting (361) is uniformly distributed along the circumferencial direction of the body tube (31).
6. projection device according to claim 3, which is characterized in that the position-limit mechanism (36) includes position-limiting drum, described
Position-limiting drum protrudes into the second end of the body tube (31), and is fixedly connected with the body tube (31), gear ring (33) energy
It is enough stuck between the step surface and the end face of the position-limiting drum.
7. according to any projection device of claim 3-6, which is characterized in that the camera lens (3) further includes thrust ball axis
It holds, the thrust ball bearing limit is between the step surface and the gear ring (33).
8. projection device according to claim 1, which is characterized in that be provided with internal screw thread on the gear ring (33), institute
It states one end on group's lens barrel (32) for connecting with the gear ring (33) and is provided with external screw thread, the gear ring (33) and institute
Middle group's lens barrel (32) is stated to be threadedly coupled by the internal screw thread and the external screw thread.
9. projection device according to claim 1, which is characterized in that the length of the guide groove (311) is less than or equal to
Length threshold.
10. a kind of camera lens, which is characterized in that the camera lens includes: body tube (31), middle group's lens barrel (32), gear ring (33), drives
Motivation structure (34) and controller (35)；
The first end of the body tube (31) is connect with the optical-mechanical system (2), and gear ring (33) limit is in the primary mirror
The inner cavity of the second end of cylinder (31), and can be rotated relative to the circumferencial direction of the body tube (31)；
The inner wall of the second end of the body tube (31) is provided with the guide groove (311) axially extended, middle group's lens barrel
(32) outer wall is provided with boss (321), and the second end of the body tube (31) is protruded into one end of middle group's lens barrel (32)
Inner cavity, and be threadedly coupled with the gear ring (33), the boss (321) is stuck in the guide groove (311)；
The driving mechanism (34) is fixed on the outer wall of the body tube (31), the controller (35) and the driving mechanism
(34) it is electrically connected, the driving mechanism (34) can drive gear ring (33) rotation based on the controller (35).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828787.3A CN110515172A (en) | 2019-09-03 | 2019-09-03 | Projection device and camera lens |
| PCT/CN2020/113320 WO2021043226A1 (en) | 2019-09-03 | 2020-09-03 | Projection device and lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828787.3A CN110515172A (en) | 2019-09-03 | 2019-09-03 | Projection device and camera lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110515172A true CN110515172A (en) | 2019-11-29 |
Family
ID=68630587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910828787.3A Pending CN110515172A (en) | 2019-09-03 | 2019-09-03 | Projection device and camera lens |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110515172A (en) |
| WO (1) | WO2021043226A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021043226A1 (en) * | 2019-09-03 | 2021-03-11 | 青岛海信激光显示股份有限公司 | Projection device and lens |
| CN112558391A (en) * | 2020-12-18 | 2021-03-26 | 深圳吉祥星科技股份有限公司 | Multifunctional integrated projector |
| CN114236739A (en) * | 2021-11-29 | 2022-03-25 | 歌尔光学科技有限公司 | Lens assembly and projection equipment |
| CN114236945A (en) * | 2021-10-29 | 2022-03-25 | 歌尔光学科技有限公司 | Optical machine |
| CN114895511A (en) * | 2022-06-15 | 2022-08-12 | 深圳市爱派赛科技有限公司 | Wide panorama optical lens equipment of application scope |
| WO2023201875A1 (en) * | 2022-04-22 | 2023-10-26 | 歌尔光学科技有限公司 | Projection lens, projection optical machine and virtual reality device |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485315A (en) * | 1992-04-17 | 1996-01-16 | Asahi Kogaku Kogyo Kabushiki Kaisha | Backlash removing mechanism for zoom lens assembly |
| CN1434345A (en) * | 2002-01-23 | 2003-08-06 | 精工爱普生株式会社 | Projector |
| CN1447143A (en) * | 2002-03-25 | 2003-10-08 | 柯尼卡株式会社 | Lens barrel and associated camera installation |
| CN1510502A (en) * | 2002-12-26 | 2004-07-07 | 杨继永 | High-brightness liquid-crystal projecting systems |
| CN1527086A (en) * | 2003-03-03 | 2004-09-08 | 富士写真光机株式会社 | Lens cone |
| JP2004294625A (en) * | 2003-03-26 | 2004-10-21 | Fuji Photo Optical Co Ltd | Zoom lens barrel |
| CN1540383A (en) * | 2003-04-22 | 2004-10-27 | ������������ʽ���� | Imaging system |
| CN1542485A (en) * | 2003-02-26 | 2004-11-03 | 佳能株式会社 | Lens apparatus and image-taking apparatus |
| CN2784956Y (en) * | 2004-12-29 | 2006-05-31 | 鸿富锦精密工业（深圳）有限公司 | Digital camera zooming lens |
| CN1847969A (en) * | 2005-04-15 | 2006-10-18 | 鸿富锦精密工业（深圳）有限公司 | Two-sectional focuser |
| CN200944150Y (en) * | 2006-08-30 | 2007-09-05 | 贾怀昌 | Inner focusing mechanism of computer camera |
| CN101315510A (en) * | 2007-05-29 | 2008-12-03 | 欣相光电股份有限公司 | Automatic focusing structure with radially arranged piezoelectric motor |
| CN101526660A (en) * | 2008-03-05 | 2009-09-09 | 鸿富锦精密工业（深圳）有限公司 | Shot module |
| CN103217856A (en) * | 2013-05-10 | 2013-07-24 | 厦门力鼎光电技术有限公司 | Focusing mechanism of monitoring lens |
| CN106647108A (en) * | 2016-12-15 | 2017-05-10 | 福建福特科光电股份有限公司 | Lens assembly capable of realizing automatic focusing by adopting fixed focus lens |
| CN108279469A (en) * | 2018-03-22 | 2018-07-13 | 苏州蛟视智能科技有限公司 | A kind of automatic focusing device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0176379B1 (en) * | 1996-08-30 | 1999-05-15 | 대우전자주식회사 | Projection lens adjusting apparatus of projector |
| JP2004240030A (en) * | 2003-02-04 | 2004-08-26 | Nidec Copal Corp | Zoom lens barrel |
| CN101354468B (en) * | 2007-07-23 | 2010-06-23 | 鸿富锦精密工业（深圳）有限公司 | Zooming apparatus |
| CN206348581U (en) * | 2016-12-23 | 2017-07-21 | 深圳市火乐科技发展有限公司 | A kind of projecting apparatus of automatic focusing |
| CN206930878U (en) * | 2017-07-12 | 2018-01-26 | 凌云光技术集团有限责任公司 | A kind of automatic focusing mechanism and camera |
| CN110515172A (en) * | 2019-09-03 | 2019-11-29 | 青岛海信激光显示股份有限公司 | Projection device and camera lens |
-
2019
- 2019-09-03 CN CN201910828787.3A patent/CN110515172A/en active Pending
-
2020
- 2020-09-03 WO PCT/CN2020/113320 patent/WO2021043226A1/en active Application Filing
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485315A (en) * | 1992-04-17 | 1996-01-16 | Asahi Kogaku Kogyo Kabushiki Kaisha | Backlash removing mechanism for zoom lens assembly |
| CN1434345A (en) * | 2002-01-23 | 2003-08-06 | 精工爱普生株式会社 | Projector |
| CN1447143A (en) * | 2002-03-25 | 2003-10-08 | 柯尼卡株式会社 | Lens barrel and associated camera installation |
| CN1510502A (en) * | 2002-12-26 | 2004-07-07 | 杨继永 | High-brightness liquid-crystal projecting systems |
| CN1542485A (en) * | 2003-02-26 | 2004-11-03 | 佳能株式会社 | Lens apparatus and image-taking apparatus |
| CN1527086A (en) * | 2003-03-03 | 2004-09-08 | 富士写真光机株式会社 | Lens cone |
| JP2004294625A (en) * | 2003-03-26 | 2004-10-21 | Fuji Photo Optical Co Ltd | Zoom lens barrel |
| CN1540383A (en) * | 2003-04-22 | 2004-10-27 | ������������ʽ���� | Imaging system |
| CN2784956Y (en) * | 2004-12-29 | 2006-05-31 | 鸿富锦精密工业（深圳）有限公司 | Digital camera zooming lens |
| CN1847969A (en) * | 2005-04-15 | 2006-10-18 | 鸿富锦精密工业（深圳）有限公司 | Two-sectional focuser |
| CN200944150Y (en) * | 2006-08-30 | 2007-09-05 | 贾怀昌 | Inner focusing mechanism of computer camera |
| CN101315510A (en) * | 2007-05-29 | 2008-12-03 | 欣相光电股份有限公司 | Automatic focusing structure with radially arranged piezoelectric motor |
| CN101526660A (en) * | 2008-03-05 | 2009-09-09 | 鸿富锦精密工业（深圳）有限公司 | Shot module |
| CN103217856A (en) * | 2013-05-10 | 2013-07-24 | 厦门力鼎光电技术有限公司 | Focusing mechanism of monitoring lens |
| CN106647108A (en) * | 2016-12-15 | 2017-05-10 | 福建福特科光电股份有限公司 | Lens assembly capable of realizing automatic focusing by adopting fixed focus lens |
| CN108279469A (en) * | 2018-03-22 | 2018-07-13 | 苏州蛟视智能科技有限公司 | A kind of automatic focusing device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021043226A1 (en) * | 2019-09-03 | 2021-03-11 | 青岛海信激光显示股份有限公司 | Projection device and lens |
| CN112558391A (en) * | 2020-12-18 | 2021-03-26 | 深圳吉祥星科技股份有限公司 | Multifunctional integrated projector |
| CN114236945A (en) * | 2021-10-29 | 2022-03-25 | 歌尔光学科技有限公司 | Optical machine |
| CN114236739A (en) * | 2021-11-29 | 2022-03-25 | 歌尔光学科技有限公司 | Lens assembly and projection equipment |
| WO2023201875A1 (en) * | 2022-04-22 | 2023-10-26 | 歌尔光学科技有限公司 | Projection lens, projection optical machine and virtual reality device |
| CN114895511A (en) * | 2022-06-15 | 2022-08-12 | 深圳市爱派赛科技有限公司 | Wide panorama optical lens equipment of application scope |
| CN114895511B (en) * | 2022-06-15 | 2023-12-12 | 深圳市爱派赛科技有限公司 | Panoramic optical lens equipment with wide application range |
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| WO2021043226A1 (en) | 2021-03-11 |
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