CN111045198A - Zoom lens structure and projector - Google Patents
Zoom lens structure and projector Download PDFInfo
- Publication number
- CN111045198A CN111045198A CN201911360810.7A CN201911360810A CN111045198A CN 111045198 A CN111045198 A CN 111045198A CN 201911360810 A CN201911360810 A CN 201911360810A CN 111045198 A CN111045198 A CN 111045198A
- Authority
- CN
- China
- Prior art keywords
- zoom lens
- lens fixing
- plate
- fixing plate
- bracket
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- 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.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
-
- 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
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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
- G03B21/142—Adjusting of projection optics
Abstract
The invention discloses a zoom lens structure and a projector, belonging to the field of projection lamps, wherein the zoom lens structure comprises a bracket, a waterproof glass fixing plate, a front combined lens fixing ring, a zoom lens fixing plate and a connecting fixing plate which are distributed in a row are sequentially arranged on the bracket from front to back; the waterproof glass fixing plate and the connecting fixing plate are both fixedly connected to the bracket, and the front combined lens fixing ring and the zoom lens fixing plate are both connected to the bracket in a sliding manner along the front-back direction; the bracket is rotatably connected with two opposite and parallel transmission screw rods, and the front combined lens fixing ring and the zoom lens fixing plate are respectively in transmission connection with the two transmission screw rods; two driving motors are fixed on the bracket. The invention has simple structure and reasonable design, and can efficiently and conveniently carry out the zoom operation of the lens.
Description
Technical Field
The invention relates to the field of projection lamps, in particular to a zoom lens structure and a projector.
Background
The projection lamp, also known as a projector, is a device capable of projecting images or videos onto a curtain, and when the projection lamp is used for ordinary illumination, the projection lamp can be widely applied to outdoor lighting projects of lamps in families, offices, schools and entertainment places, and can also be used for creating effects of various lights and projecting required patterns.
However, the following problems generally exist in the projectors commonly used in the market at present: the lens zooming structure of the existing projector is complex and the operation is troublesome; in addition, the lens of the existing projector is difficult to reach a long imaging distance.
Disclosure of Invention
The invention aims to provide a zoom lens structure and a projector, aiming at solving the problem that the lens zoom structure of the projector in the prior art is complex.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a zoom lens structure comprises a bracket, wherein a front combined lens fixing ring and a zoom lens fixing plate which are distributed in a row are sequentially arranged on the bracket from front to back, a front combined lens is arranged on the front combined lens fixing ring, and a zoom lens is arranged on the zoom lens fixing plate; the front combined lens fixing ring and the zoom lens fixing plate are both connected to the bracket in a sliding manner, and the sliding directions of the front combined lens fixing ring and the zoom lens fixing plate are parallel to the front and back directions of the bracket; two parallel electric screw rods are mounted on the support, and output ends of the two electric screw rods are respectively connected with the front combined lens fixing ring and the zoom lens fixing plate.
Preferably, the electric screw rod comprises a transmission screw rod, a transmission screw nut and a driving motor, the transmission screw rod is rotatably connected to the bracket, and the screw nut is mounted on the front combined lens fixing ring and the zoom lens fixing plate; the driving motor is fixed on the support and is mechanically connected with the transmission screw rod.
Another preferred, the electric lead screw includes a transmission lead screw, a transmission screw nut and a driving motor, the transmission lead screw is fixed on the support, the transmission screw nut is rotatably connected on the front combined lens fixing ring and the zoom lens fixing plate, the driving motor is fixed on the front combined lens fixing ring and the zoom lens fixing plate, and the driving motor is mechanically connected with the transmission screw nut.
Preferably, at least two guide rods are fixedly mounted on the bracket, and the front combined lens fixing ring and the zoom lens fixing plate slide along the guide rods.
Preferably, the front combined lens fixing ring and the zoom lens fixing plate are respectively provided with a linear bearing matched with the guide rod.
Preferably, the front combined lens fixing ring is arranged in front of the bracket, a waterproof glass fixing plate is fixedly arranged on the bracket, and waterproof glass is arranged on the waterproof glass fixing plate.
Preferably, the bracket comprises a framework section bar and a closing plate coated outside the framework section bar, and the closing plates positioned in the front and rear directions of the bracket are both provided with light through holes.
The invention also provides a projector which comprises a frame, wherein the frame is provided with a lamp box, the lamp box is internally provided with a power supply, a light source, a film winding mechanism and a control device, the projector also comprises the zoom lens structure, and a support of the zoom lens structure is fixedly arranged at the front part of the lamp box.
Preferably, the light source is an LED lamp panel, and an LED lamp panel radiator is further installed in the lamp box.
Furthermore, an adjustable foot rest is fixed on the rack and comprises a telescopic support and a support plate, the lower end of the telescopic support is fixed on the rack, the rear end of the support plate is hinged to the rack, the front end of the support plate is hinged to the upper end of the telescopic support, and the light box is fixed on the support plate.
By adopting the technical scheme, the front combined lens and the zoom lens can move on the bracket due to the arrangement of the transmission screw rod, so that the aim of adjusting the focal length can be achieved by changing the position of the front combined lens and the zoom lens on the bracket, the zoom operation is convenient, the positions of the front combined lens and the zoom lens can be adjusted only by working through the driving motor, and the adjustment precision of the transmission screw rod is high and reliable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a zoom lens structure according to the present invention;
FIG. 2 is a side view of a zoom lens structure according to the present invention;
FIG. 3 is a schematic diagram of an external structure of a projector according to the present invention;
fig. 4 is a schematic diagram of an internal structure of a projector according to the present invention.
In the figure, the zoom lens structure is 10, a bracket 1, a waterproof glass fixing plate 2, a front combined lens fixing ring 3, a zoom lens fixing plate 4, a connecting fixing plate 5, a guide rod 6, a linear bearing 7, a transmission screw rod 8, a driving motor 9, a rack 20, a horizontal rectangular frame 21, a vertical rectangular frame 22, a telescopic bracket 23, a supporting plate 24, a lamp box 30, a power supply 31, a light source 32, a film winding mechanism 33 and a control device 34.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on structures shown in the drawings, and are only used for convenience in describing the present invention, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the technical scheme, the terms "first" and "second" are only used for referring to the same or similar structures or corresponding structures with similar functions, and are not used for ranking the importance of the structures, or comparing the sizes or other meanings.
In addition, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two structures can be directly connected or indirectly connected through an intermediate medium, and the two structures can be communicated with each other. To those skilled in the art, the specific meanings of the above terms in the present invention can be understood in light of the present general concepts, in connection with the specific context of the scheme.
As shown in fig. 1-2, the present invention provides a zoom lens structure 10, which includes a bracket 1, in this embodiment, the bracket 1 includes a three-dimensional rectangular frame formed by welding or bolting a plurality of skeleton profiles, and then, six faces of the three-dimensional rectangular frame are all fixed with a closed class, and light through holes are respectively formed on the closed plates located in the front and rear directions of the bracket 1 for projection.
The bracket 1 is sequentially provided with a waterproof glass fixing plate 2, a front combined lens fixing ring 3, a zoom lens fixing plate 4 and a connecting fixing plate 5 which are distributed in a row from front to back. Wherein, install waterproof glass on the waterproof glass fixed plate 2, install preceding combined lens on the preceding combined lens retainer plate 3, install the zoom lens on the zoom lens fixed plate 4, install the back camera lens on connecting the fixed plate 5. In this embodiment, the front combined lens is a combination of a lenticular lens and a concave-convex lens, the zoom lens is a plano-convex lens, and the combination of the above lenses according to the above positional relationship can form a telephoto lens, so that an image can be formed at a longer distance.
It is to be understood that the waterproof glass fixing plate 2, the front combination lens fixing ring 3, the zoom lens fixing plate 4 and the connecting fixing plate 5 each include a through hole for passing light therethrough, and although the name "plate" does not mean a closed structure. On the fixing of each lens, can adopt elasticity buckle fixed, perhaps compress tightly fixedly through the briquetting and this briquetting passes through the screw fastening.
In this embodiment, waterproof glass fixed plate 2 and connection fixed plate 5 are all fixed connection on support 1, and its position between them is unmovable, and it is fixed all can through welding or bolted connection.
The front combined lens fixing ring 3 and the zoom lens fixing plate 4 are both slidably connected to the bracket 1, and the sliding direction of the front combined lens fixing ring 3 and the zoom lens fixing plate 4 is parallel to the front-back direction of the bracket 1. In this embodiment, at least two guide rods 6, for example, 4 guide rods 6 are fixedly mounted on the setting bracket 1, four guide rods 6 are distributed in a rectangular shape, and the front combination lens fixing ring 3 and the zoom lens fixing plate 4 both slide along the guide rods 6; and in order to reduce the sliding friction force and improve the sliding efficiency, linear bearings 7 matched with the guide rods 6 are arranged on the front combined lens fixing ring 3 and the zoom lens fixing plate 4, four linear bearings 7 are arranged, and each linear bearing 7 is matched with one guide rod 6.
Two parallel electric screw rods are arranged on the bracket 1, and the output ends of the two electric screw rods are respectively connected with the front combined lens fixing ring 3 and the zoom lens fixing plate 4 so as to drive the two electric screw rods to move.
In this embodiment, the bracket 1 is rotatably connected with two opposite and parallel transmission screw rods 8, and the transmission screw rods 8 are arranged along the front and back directions of the bracket 1; in addition, the front combined lens fixing ring 3 and the zoom lens fixing plate 4 are respectively in transmission connection with two transmission screw rods 8; it can be understood that, a transmission screw nut is arranged on the front combined lens fixing ring 3 and the zoom lens fixing plate 4 or both of them are provided with transmission threads, so that the transmission screw 8 can drive the front combined lens fixing ring 3 and the zoom lens fixing plate 4 to slide in the front-back direction of the bracket 1 through the transmission screw nut or the transmission threads.
Two driving motors 9 are fixedly mounted on the support 1, and the two driving motors 9 are respectively and mechanically connected with the two transmission screw rods 8. The drive motor 9 is preferably a stepping motor or a reduction motor, which is connected to the drive spindle 8 via a coupling.
Or in another embodiment, the two driving motors 9 are respectively fixed on the front combined lens fixing ring 3 and the zoom lens fixing plate 4, the two driving screws 8 are respectively provided with a matched nut, the nut is fixed with a bearing, the bearing is rotatably connected on the front combined lens fixing ring 3 and the zoom lens fixing plate 4, and the nut is also provided with a belt pulley or a gear and is in driving connection with the driving motor 9 through the belt pulley or the gear.
As shown in fig. 3 and 4, the present invention further provides a projector, which includes a frame 20, in this embodiment, the frame 20 includes a horizontal rectangular frame 21 for being placed on the ground, and a vertical rectangular frame 22 is vertically fixed at the rear end of the horizontal rectangular frame 21; meanwhile, the rack 20 further comprises an adjustable foot rest, the adjustable foot rest comprises a telescopic support 23 and a support plate 24, the lower end of the telescopic support 23 is fixed on the horizontal rectangular frame 21 of the rack 20 through a bolt, the rear end of the support plate 24 is hinged to the vertical rectangular frame 22 of the rack 20 through a hinge or a connecting pin, and the front end of the support plate is hinged to the upper end of the telescopic support 23 through a hinge or a connecting pin. As for the telescopic bracket 23, a scissor type telescopic bracket is used in the present embodiment, or a telescopic cylinder may be used in another embodiment.
The projector of the present embodiment further includes a light box 30 and the zoom lens structure 10 described above, and the zoom lens structure 10 is fixedly connected to the front portion of the light box 30 by the connection fixing plate 5 therein. The light box 30 is fixed on the support plate 24, and the light box 30 is of a metal plate structure. As a conventional art, a power supply 31, a light source 32, a film winding mechanism 33, and a control device 34 are installed in the lamp box 30, wherein the power supply 31, the light source 32, and the film winding mechanism 33 are installed in this order from the rear to the front.
In this embodiment, the power supply 31 includes a power switch, a connection line, a power conversion device, a power display device, a connection line, and the like.
In this embodiment, it is preferable that the light source 32 is an LED lamp panel, the light source 32 includes a plurality of paths of LED lamp bead plates, and meanwhile, an LED lamp panel radiator and a fan are further installed in the lamp box 30 to be used for radiating the light source 32, and the LED lamp bead plates are tightly attached to a front end plane plate of the radiating device, and a light collecting part is further installed at the front end of the LED lamp bead plates. In addition, a plurality of heat dissipation fans for ventilation and heat dissipation are disposed in the light box 30.
In this embodiment, the film winding mechanism 33 includes a frame body and two film rollers rotatably connected to the frame body, the film rollers are driven by a motor to rotate, so as to wind the film and form the film into a continuous motion state, and the two film rollers are respectively used for forward projection and reverse projection of the film.
The projector provided by the invention adopts a physical static projection technology, namely a phantom-like principle, and under the power-on state, the light source 32 penetrates through the condenser lens to project the image on the film negative onto an object through the zoom lens structure 10 to form a static projection picture. The LED lamp bead plate is used as a light source, has the characteristics of high luminous flux lumen, good projection effect and clear picture, and can greatly prolong the service life of the LED lamp bead plate due to the arrangement of the component heat dissipation device, and the service life of the lamp bead reaches more than 20000H.
The projector has the effect of realizing the projection of the object surface in the occasions of commercial performance, celebration, product promotion, municipal activity propaganda and the like outdoors or in large indoor places at night by adopting a novel physical projection technology. The projection system has the advantages of convenient operation, convenient use and carrying, capability of projecting only by a proper projection object medium interface, large projection area, capability of enabling a single machine to reach 120 square meters, capability of combining a plurality of machines on line according to conditions so as to expand a required projection picture, high brightness, capability of enabling luminous flux to reach 70000 lumens, good color picture projection effect, high scene shock degree, capability of effectively setting atmosphere effects of various propaganda activities at night and capability of achieving the effect expected by customers.
The projector provided by the invention greatly increases the projection distance of the picture by using the zoom lens structure, the maximum projection distance can reach 120 meters, and the projection picture is clear and bright, thereby better solving the problem that the arrangement of the equipment is limited by the environmental position.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (10)
1. A zoom lens structure is characterized in that: the zoom lens fixing device comprises a bracket, wherein a front combined lens fixing ring and a zoom lens fixing plate which are distributed in a row are sequentially arranged on the bracket from front to back, a front combined lens is arranged on the front combined lens fixing ring, and a zoom lens is arranged on the zoom lens fixing plate; the front combined lens fixing ring and the zoom lens fixing plate are both connected to the bracket in a sliding manner, and the sliding directions of the front combined lens fixing ring and the zoom lens fixing plate are parallel to the front and back directions of the bracket; two parallel electric screw rods are mounted on the support, and output ends of the two electric screw rods are respectively connected with the front combined lens fixing ring and the zoom lens fixing plate.
2. The zoom lens structure according to claim 1, wherein: the electric screw rod comprises a transmission screw rod, a transmission screw nut and a driving motor, the transmission screw rod is rotatably connected to the bracket, and the screw nut is arranged on the front combined lens fixing ring and the zoom lens fixing plate; the driving motor is fixed on the support and is mechanically connected with the transmission screw rod.
3. The zoom lens structure according to claim 1, wherein: the electric screw rod comprises a transmission screw rod, a transmission screw nut and a driving motor, the transmission screw rod is fixed on the support, the front combined lens fixing ring and the zoom lens fixing plate are connected with the transmission screw nut in a rotatable mode, the front combined lens fixing ring and the zoom lens fixing plate are fixed with the driving motor, and the driving motor is mechanically connected with the transmission screw nut.
4. The zoom lens structure according to claim 1, wherein: at least two guide rods are fixedly mounted on the support, and the front combined lens fixing ring and the zoom lens fixing plate slide along the guide rods.
5. The zoom lens structure of claim 4, wherein: and linear bearings matched with the guide rods are arranged on the front combined lens fixing ring and the zoom lens fixing plate.
6. The zoom lens structure according to claim 1, wherein: preceding combination lens retainer plate the place ahead still fixed mounting has waterproof glass fixed plate on the support, install waterproof glass on the waterproof glass fixed plate.
7. The zoom lens structure according to claim 1, wherein: the support comprises a framework section bar and a sealing plate coated outside the framework section bar, and the sealing plate positioned in the front and rear directions of the support is provided with light through holes.
8. The utility model provides a projector, includes the frame, install the lamp house in the frame, install power, light source, film take-up mechanism and controlling means in the lamp house, its characterized in that: further comprising a zoom lens structure according to any one of claims 1 to 7, wherein the bracket of the zoom lens structure is fixedly mounted on the front portion of the light box.
9. The projector according to claim 8, wherein: the light source is the LED lamp plate, still install LED lamp plate radiator in the lamp house.
10. The projector according to claim 8, wherein: the adjustable foot rest is fixed on the rack and comprises a telescopic support and a support plate, the lower end of the telescopic support is fixed on the rack, the rear end of the support plate is hinged to the rack, the front end of the support plate is hinged to the upper end of the telescopic support, and the light box is fixed on the support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360810.7A CN111045198A (en) | 2019-12-25 | 2019-12-25 | Zoom lens structure and projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360810.7A CN111045198A (en) | 2019-12-25 | 2019-12-25 | Zoom lens structure and projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111045198A true CN111045198A (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911360810.7A Pending CN111045198A (en) | 2019-12-25 | 2019-12-25 | Zoom lens structure and projector |
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| Country | Link |
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| CN (1) | CN111045198A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823204A (en) * | 2021-08-27 | 2021-12-21 | 胡娟 | Intelligent advertisement marketing and delivering device and method |
| WO2023245983A1 (en) * | 2022-06-23 | 2023-12-28 | 深圳市神牛摄影器材有限公司 | Focusing lamp |
| CN117687168A (en) * | 2024-02-01 | 2024-03-12 | 吉林省巨程智造光电技术有限公司 | Aspherical lens device for space signal transmission |
-
2019
- 2019-12-25 CN CN201911360810.7A patent/CN111045198A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113823204A (en) * | 2021-08-27 | 2021-12-21 | 胡娟 | Intelligent advertisement marketing and delivering device and method |
| CN113823204B (en) * | 2021-08-27 | 2024-01-12 | 北京基智科技有限公司 | Intelligent advertisement marketing and delivering equipment and delivering method |
| WO2023245983A1 (en) * | 2022-06-23 | 2023-12-28 | 深圳市神牛摄影器材有限公司 | Focusing lamp |
| CN117687168A (en) * | 2024-02-01 | 2024-03-12 | 吉林省巨程智造光电技术有限公司 | Aspherical lens device for space signal transmission |
| CN117687168B (en) * | 2024-02-01 | 2024-04-19 | 吉林省巨程智造光电技术有限公司 | Aspherical lens device for space signal transmission |
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Effective date of registration: 20230712 Address after: 201400 floor 5, building 11, No. 6055, Jinhai highway, Fengxian District, Shanghai Applicant after: Shanghai Xingxun Technology Co.,Ltd. Address before: 200241 Room 355, Building 3, No. 1800, Jiangchuan Road, Minhang District, Shanghai Applicant before: SHANGHAI XINGXUN ELECTRIC Co.,Ltd. |