CN102590980B - Lens focusing device - Google Patents
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- CN102590980B CN102590980B CN201210076050.9A CN201210076050A CN102590980B CN 102590980 B CN102590980 B CN 102590980B CN 201210076050 A CN201210076050 A CN 201210076050A CN 102590980 B CN102590980 B CN 102590980B
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Abstract
The invention discloses a lens focusing device. The lens focusing device provided by the invention comprises a focusing knob, a focusing knob cover, a focusing knob bracket and screws. By using the lens focusing device provided by the invention, required focusing operation can be extremely conveniently performed on a lens, the user experience of a user is improved, and the dependence of the lens focusing device on the position of an optical machine and the spatial position of projection equipment can also be effectively reduced.
Description
Technical field
The present invention relates to focus adjustment technology, particularly a kind of lens focusing device.
Background technology
When using conventional projector equipment, along with the difference of use scenes, often need to regulate the focal length of the camera lens in projector equipment, thereby make cast out picture more clear.Therefore, in general projector equipment, be all provided with corresponding lens focusing device, for the focal length of adjustable lens.
Referring to Fig. 1 and Fig. 2, in focus control in the prior art, generally adopted additional focusing ring 102.Described camera lens 101 is circular, on described camera lens 101 and focusing ring 102, all offers fixed orifice 103.Described focusing ring 102 is sheathed on described camera lens 101, and is fixed together by gib screw and described camera lens 101 through described fixed orifice 103.Therefore, when rotating focusing ring 102, can drive described camera lens 101 to rotate, thereby can change the focal length of camera lens 101, realize the focusing operation to camera lens 101.Wherein, focusing ring 102 has identical rotation center with camera lens.
But in order to make full use of limited space, projector equipment of the prior art generally will be erected and will be suspended on body of wall.Referring to Fig. 3 and Fig. 4, in projector equipment in the prior art, due to the reason of design, camera lens in ray machine is generally positioned at the middle part of projector equipment 300, the camera lens knob 301 corresponding with camera lens is also generally positioned at the side, middle part of projector equipment, therefore camera lens knob 301 is all distant to the distance of the shell rim of projector equipment 300, and user is difficult to directly stir camera lens knob 301.But, if the focus control being connected with camera lens knob 301 is arranged on to the back side of projector equipment 300, because the distance between the back side and the body of wall of projector equipment 300 is generally all less, therefore adopt traditional structural design mode to be difficult to realize focusing function.If the focus control being connected with focusing knob is arranged on to the front of projector equipment 300, whole focusing knob all will be exposed to the outside of projector equipment 300 housings, affects attractive in appearance.
As from the foregoing, also there are some above-mentioned problems in lens focusing device of the prior art, therefore, is necessary to provide a kind of better lens focusing device, thus can be easily to the operation of focusing of the camera lens in projector equipment.
Summary of the invention
According to the present invention, a kind of lens focusing device is provided, thereby can to camera lens, have carried out required focusing operation easily, improve user's experience.
According to a kind of lens focusing device of the present invention, it comprises: focusing knob, focusing knob lid, focusing knob support and screw; Wherein,
Described focusing knob comprises: focusing lever, be arranged at focusing lever upper end and extended projector equipment housing projection, be arranged at the kink of focusing lever lower end; The middle part of described focusing lever is provided with axis hole; The bottom of described kink is provided with the camera lens knob adjustment hole being connected with the camera lens knob of described projector equipment;
The middle part in described focusing knob lid front is provided with the turning axle in the axis hole that can insert described focusing knob; The middle part of described turning axle is provided with via hole;
Described focusing knob support comprises support plane and is arranged at the flange of described support plane lower end; In described support plane, be provided with first fixed via corresponding with via hole on described focusing knob lid turning axle; On described flange, be provided with and can pass so that described focusing knob support is fixed on to the second fixed via on projector equipment housing for gib screw;
Described screw is connected through via hole, the axis hole of described focusing knob and first fixed via of described focusing knob support of described focusing knob lid, and described focusing knob and described focusing knob lid are fixed on described focusing knob support.
Wherein, the axis hole of described focusing knob is also provided with one or more reinforcement extending along described shaft hole diameter direction around.
Wherein, described focusing knob is provided with the one or more the first slip muscle around described axis hole towards a side of described focusing knob lid.
Wherein, the surface of described the first slip muscle is high light face.
Wherein, described focusing knob is provided with the one or more the second slip muscle around described axis hole towards a side of described focusing knob support.
Wherein, the surface of described the second slip muscle is high light face.
Wherein, the inwall of the axis hole of described focusing knob is high light face.
Wherein, the outside surface of the turning axle of described focusing knob lid is provided with the 3rd slip muscle around described turning axle.
Wherein, the surface of described the 3rd slip muscle is high light face.
Wherein, the front of described focusing knob lid is high light face.
Wherein, the both sides of the turning axle of described focusing knob lid are provided with reference column; The axis hole of described focusing knob is provided with one or more rotation through holes that can insert described reference column around.
Wherein, on the reference column of described focusing knob lid, be provided with the first pilot hole; In the support plane of described focusing knob support, be also provided with the first positioning bar perpendicular to the first pilot hole on the described focusing knob lid of inserting of described support plane reference column.
Wherein, on the flange of described focusing knob support, be provided with the second pilot hole; The housing inner side of described projector equipment is provided with second positioning bar corresponding with described the second pilot hole.
Wherein, on the flange of described focusing knob lid, be provided with the 3rd pilot hole; The housing inner side of described projector equipment is provided with three positioning bar corresponding with described the 3rd pilot hole.
Wherein, the housing of described projector equipment inner side is also provided with the screw pole corresponding with the second fixed via of described focusing knob support.
Wherein, the side of described focusing knob lid also can be provided with flange; On the flange of described focusing knob lid, be provided with and can pass described focusing knob lid is fixed on to the 3rd fixed via on projector equipment housing for gib screw.
Wherein, described focusing knob and focusing knob lid are made by polyoxygenated polyoxymethylene or thermoplastic engineering plastic PC.
Wherein, described focusing knob support is made by plated steel sheet or polyoxygenated polyoxymethylene.
As seen from the above technical solution, in the lens focusing device in the present invention, mainly comprise: focusing knob, focusing knob lid, focusing knob support and screw.Wherein, by stirring the projection on described focusing knob, can make described camera lens knob and rotate along clockwise direction or counterclockwise, thereby can change the focal length of camera lens, the focusing operation of realization to camera lens, thereby can to camera lens, carry out required focusing operation very easily, improve user's experience; Further, also can effectively reduce to above-mentioned lens focusing device the dependence to ray machine position, also can effectively reduce the dependence to locus, projector equipment place.Further, above-mentioned lens focusing equipment can not affect the attractive in appearance of described projector equipment yet, and has feature simple in structure, easy for installation, therefore has good assembly process process; Meanwhile, the production cost of above-mentioned lens focusing device is also lower.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described.Apparently, the accompanying drawing in below describing is only some embodiments of the present invention, for those of ordinary skills, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.
Fig. 1 is the structural representation of the focus control before assembling in prior art;
Fig. 2 is the structural representation of the focus control after assembling in prior art;
Fig. 3 is the structural representation one of projector equipment in prior art;
Fig. 4 is the structural representation two of projector equipment in prior art;
Fig. 5 is the perspective view of the lens focusing device before assembling in the embodiment of the present invention;
Fig. 6 is the perspective view of the lens focusing device after assembling in the embodiment of the present invention;
Fig. 7 is the schematic diagram of the focusing process of the lens focusing device in the embodiment of the present invention;
Fig. 8 is the positive perspective view of the focusing knob in the embodiment of the present invention;
Fig. 9 is the back side perspective view of the focusing knob in the embodiment of the present invention;
Figure 10 is the perspective view of the focusing knob lid in the embodiment of the present invention;
Figure 11 is the perspective view of the focusing knob support in the embodiment of the present invention;
Figure 12 is the assembling schematic diagram of the lens focusing device in the embodiment of the present invention;
Figure 13 is the perspective view of another kind of focusing knob lid in the embodiment of the present invention;
Figure 14 is the perspective view of the lens focusing device with another kind of focusing knob lid before assembling in the embodiment of the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Referring to Fig. 5 to Figure 14, the lens focusing device in the present embodiment comprises: focusing knob 1, focusing knob lid 2, focusing knob support 3 and screw 4.
Described focusing knob 1 comprises: focusing lever 11, be arranged at focusing lever 11 upper ends and extended projector equipment 300 housings projection 12, be arranged at the kink 13 of focusing lever 11 lower ends; The middle part of described focusing lever 11 is provided with axis hole 14; The bottom of described kink 13 is provided with the camera lens knob adjustment hole 15 being connected with the camera lens knob 301 of described projector equipment 300.
The middle part in described focusing knob lid 2 fronts is provided with the turning axle 21 in the axis hole 14 that can insert described focusing knob 1; The middle part of described turning axle 21 is provided with via hole 22.
Described focusing knob support 3 comprises support plane 31 and is arranged at the flange 32 of described support plane 31 lower ends; In described support plane 31, be provided with first fixed via 33 corresponding with via hole 22 on described focusing knob lid 2 turning axles 21; On described flange 32, be provided with and can pass described focusing knob support 3 is fixed on to the second fixed via 34 on projector equipment 300 housings for gib screw.
Described screw 4 is connected through via hole 22, the axis hole 14 of described focusing knob 1 and first fixed via 33 of described focusing knob support 3 of described focusing knob lid 2, and described focusing knob 1 and described focusing knob lid 2 are fixed on described focusing knob support 3.
Referring to Fig. 7 and in conjunction with Fig. 5 and Fig. 6, known according to the structure of above-mentioned lens focusing device, described focusing knob 1 and focusing knob lid 2 are fixed on described focusing knob support 3 by screw 4, the turning axle 21 of described focusing knob lid 2 inserts in the axis hole 14 of described focusing knob 1, described focusing knob support 3 is fixed on projector equipment 300 housings, and the camera lens knob adjustment hole 15 of described focusing knob 1 is connected with the camera lens knob 301 of described projector equipment 300, 12 of the projections of described focusing knob 1 are stretched out outside projector equipment 300 housings, therefore, when stirring the projection 12 of above-mentioned focusing knob 1, described focusing knob 1 can rotate around the turning axle of described focusing knob lid 2 21, thereby drive the camera lens knob 301 of described projector equipment 300 to rotate along clockwise direction or counterclockwise, thereby can change the focal length of camera lens, the focusing operation of realization to camera lens.
Due in above-mentioned lens focusing device, the projection 12 that user only need stir described focusing knob 1 can realize the focusing operation of the camera lens to projector equipment 300, therefore can to camera lens, carry out required focusing operation very easily, improve user's experience; And, in above-mentioned lens focusing device, the size of length, shape and the described camera lens knob adjustment hole 15 of described focusing knob 1, shape all can be according to the positions of the camera lens knob 301 on the installation site of ray machine and ray machine, size, shape and design in advance, thereby can effectively reduce to above-mentioned lens focusing device the dependence to ray machine position, also can effectively reduce the dependence to projector equipment 300 locus, place.Further, the main body of above-mentioned lens focusing device be installed on the housing of projector equipment 300 within, and only the projection of described focusing knob is stretched out outside projector equipment 300 housings, therefore can not affect the attractive in appearance of described projector equipment yet.In addition, between each building block in above-mentioned lens focusing device, be all to fix by screw, be therefore convenient to assembling and dismounting, there is good assembly process process; In addition, in above-mentioned lens focusing device, all parts is relatively simple for structure, and all can use common material to make, and therefore can effectively reduce production costs.
Referring to Fig. 8 and Fig. 9, and in conjunction with Fig. 5 to Fig. 7, in preferred embodiment of the present invention, the axis hole 14 of described focusing knob 1 is also provided with one or more reinforcement 16 extending along described axis hole 14 diametric(al)s around, for strengthening the intensity of described focusing knob 1.
Preferably, in preferred embodiment of the present invention, described focusing knob 1 is also provided with the one or more the first slip muscle 17 around described axis hole 14 towards a side of described focusing knob lid 2, the front butt of described the first slip muscle 17 and described focusing knob lid 2, thus can avoid the front of described focusing knob lid 2 directly to contact with the side of described focusing knob 1.Further, the surface of described the first slip muscle 17 is high light face, thereby can, when described focusing knob 1 rotates, reduce the friction force between focusing knob 1 and focusing knob lid 2, improves rotation feel.
Preferably, in preferred embodiment of the present invention, described focusing knob 1 is also provided with the one or more the second slip muscle 18 around described axis hole 14 towards a side of described focusing knob support 3, support plane 31 butts of described the second slip muscle 18 and described focusing knob support 3, thus can avoid the support plane 31 of described focusing knob support 3 directly to contact with the side of described focusing knob 1.Further, the surface of described the second slip muscle 18 is high light face, thereby can, when described focusing knob 1 rotates, reduce the friction force between focusing knob 1 and focusing knob support 3, improves rotation feel.
Preferably, in preferred embodiment of the present invention, the inwall of the axis hole 14 of described focusing knob 1 is high light face, thereby can be when described focusing knob 1 rotates, friction force between turning axle 21 and the axis hole 14 of focusing knob 1 of reduction focusing knob lid 2, improves rotation feel.
Referring to Figure 10, and in conjunction with Fig. 5 to Fig. 9, in preferred embodiment of the present invention, the outside surface of the turning axle 21 of described focusing knob lid 2 is provided with the 3rd slip muscle 23 around described turning axle 21.The axis hole 14 inwall butts of described the 3rd slip muscle 23 and described focusing knob 1, thus can avoid the turning axle 21 of described focusing knob lid 2 and axis hole 14 inwalls of described focusing knob 1 directly to contact.Further, the surface of described the 3rd slip muscle 23 is high light face, thereby can be when described focusing knob 1 rotates, and reduces the friction force between the turning axle 21 of described focusing knob lid 2 and axis hole 14 inwalls of described focusing knob 1, improves rotation feel.
Preferably, in preferred embodiment of the present invention, the front of described focusing knob lid 2 is high light face, thereby can be when described focusing knob 1 rotates, reduce the friction force between focusing knob lid 2 and focusing knob 1 (or first slip muscle 17 of focusing knob 1), improve rotation feel.
Preferably, in preferred embodiment of the present invention, the both sides of the turning axle 21 of described focusing knob lid 2 are also provided with reference column 24; The axis hole 14 of described focusing knob 1 is also provided with one or more rotation through holes 19 that can insert described reference column 24 around.The reference column 24 of described focusing knob lid 2 has certain guide effect, and in assembling process, reference column 24, through the rotation through hole 19 of described focusing knob 1, can be conducive to assemble between focusing knob lid 2 and focusing knob 1; Meanwhile, described reference column 24 also has positioning action.
In addition, the large I of the rotation through hole 19 of described focusing knob 1 presets according to the anglec of rotation of described camera lens knob 301, when avoiding described focusing knob 1 to rotate, described rotation through hole 19 produces mutually and interferes with the reference column 24 of described focusing knob lid 2, thereby hinders the rotation of described focusing knob 1.
Referring to Figure 10 and Figure 12, and in conjunction with Fig. 5 to Fig. 9, in preferred embodiment of the present invention, on the reference column 24 of described focusing knob lid 2, be provided with the first pilot hole 25; In the support plane 31 of described focusing knob support 3, be also provided with the first positioning bar 35 perpendicular to the first pilot hole 25 on described focusing knob lid 2 reference columns 24 of inserting of described support plane 31.The setting of described the first positioning bar 35 and the first pilot hole 25, can play good positioning action and guide effect, thereby is conducive to described focusing knob lid 2 to be assembled to focusing knob support 3, improves the efficiency of assembling process.
Preferably, in preferred embodiment of the present invention, be also provided with the second pilot hole 36 on the flange 32 of described focusing knob support 3, the housing inner side of described projector equipment 300 is provided with second positioning bar 302 corresponding with described the second pilot hole 36.In assembling process, above-mentioned the second positioning bar 302 can be inserted in described the second pilot hole 36, thereby can play good positioning action and guide effect, thereby be conducive to described focusing knob support 3 to be assembled on the housing of projector equipment 300, improve the efficiency of assembling process.
Preferably, in preferred embodiment of the present invention, the housing inner side of described projector equipment 300 is also provided with the screw pole 303 corresponding with the second fixed via 34 of described focusing knob support 3, after can passing described the second fixed via 34 for gib screw, be connected with described screw pole 303, thereby described focusing knob support 3 is fixed on the housing of described projector equipment 300.
In above-mentioned preferred embodiment, used a focusing knob support 3 that whole lens focusing device is arranged on the housing of projector equipment 300.But, the in the situation that of permission in space, participate in Figure 13 and Figure 14, in preferred embodiment of the present invention, the side of described focusing knob lid 2 also can be provided with flange 26; On the flange 26 of described focusing knob lid 2, be provided with and can pass described focusing knob lid 2 is fixed on to the 3rd fixed via 27 on projector equipment 300 housings for gib screw.Therefore,, by the above-mentioned focusing knob lid 2 with flange 26, also described eyeglass focus control more can be fixedly mounted on the housing of projector equipment 300.
Preferably, in preferred embodiment of the present invention, on the flange 26 of described focusing knob lid 2, be also provided with the 3rd pilot hole 28, the housing inner side of described projector equipment 300 is provided with the three positioning bar (not shown) corresponding with described the 3rd pilot hole 28.In assembling process, above-mentioned the 3rd positioning bar can be inserted in described the 3rd pilot hole 28, thereby can play good positioning action and guide effect, thereby be conducive to described focusing knob lid 2 to be assembled on the housing of projector equipment 300, improve the efficiency of assembling process.
Preferably, in preferred embodiment of the present invention, described focusing knob 1 and focusing knob lid 2 can be made by polyoxygenated polyoxymethylene (POM) or a kind of thermoplastic engineering plastic PC.Described focusing knob support 3 can be made by plated steel sheet (SECC) or POM.Wherein, described POM can be described as again match steel, is a kind of thermoplastic engineering plastic, has good physics, machinery and chemical property, especially has excellent crocking resistance.
Referring to Fig. 3 to Figure 13, the assembling process of the lens focusing device described in the present embodiment is as follows:
First, can be by described screw 4 successively by the via hole 22 of described focusing knob lid 2 and the axis hole 14 of described focusing knob 1, be connected with the first fixed via 33 of described focusing knob support 3, thereby described focusing knob 1 and described focusing knob lid 2 are fixed on described focusing knob support 3, and described focusing knob 1 can be rotated around the turning axle of described focusing knob lid 2 21; Then, the projection of described focusing knob 1 12 is stretched out outside the housing of projector equipment 300, the camera lens knob adjustment hole 15 of described focusing knob 1 is connected with the camera lens knob 301 of described projector equipment 300; Finally, gib screw can be passed after the second fixed via 34 on the flange 32 of described focusing knob support 3, be connected with the housing of described projector equipment 300, thereby whole lens focusing device is arranged on the housing of described projector equipment 300.
After completing above-mentioned assembling process, can stir the projection 12 on described focusing knob 1, described focusing knob 1 is rotated around the turning axle 21 of described focusing knob lid 2, thereby drive the camera lens knob 301 of described projector equipment 300 to rotate along clockwise direction or counterclockwise, thereby can change the focal length of camera lens, realize the focusing operation to camera lens.
In summary, in the lens focusing device that provided in the present invention, by stirring the projection on described focusing knob, can make described camera lens knob along clockwise direction or counterclockwise rotation, thereby can change the focal length of camera lens, realize the focusing operation to camera lens.Therefore, by using above-mentioned lens focusing device, can to camera lens, carry out required focusing operation very easily, improve user's experience; And, in above-mentioned lens focusing device, the size of length, shape and the described camera lens knob adjustment hole of described focusing knob, shape all can be according to the positions of the camera lens knob on the installation site of ray machine and ray machine, size, shape and design in advance, thereby can effectively reduce to above-mentioned lens focusing device the dependence to ray machine position, also can effectively reduce the dependence to locus, projector equipment place.Further, the main body of above-mentioned lens focusing device be installed on the housing of projector equipment within, and only the projection of described focusing knob is stretched out outside projector equipment housing, therefore can not affect the attractive in appearance of described projector equipment yet.In addition, between each building block in above-mentioned lens focusing device, be all to fix by screw, be therefore convenient to assembling and dismounting, there is good assembly process process; In addition, in above-mentioned lens focusing device, all parts is relatively simple for structure, and all can use common material to make, and therefore can effectively reduce production costs.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (18)
1. a lens focusing device, is characterized in that, comprising: focusing knob, focusing knob lid, focusing knob support and screw; Wherein,
Described focusing knob comprises: focusing lever, be arranged at focusing lever upper end and extended projector equipment housing projection, be arranged at the kink of focusing lever lower end; The middle part of described focusing lever is provided with axis hole; The bottom of described kink is provided with the camera lens knob adjustment hole being connected with the camera lens knob of described projector equipment;
The middle part in described focusing knob lid front is provided with the turning axle in the axis hole that can insert described focusing knob; The middle part of described turning axle is provided with via hole;
Described focusing knob support comprises support plane and is arranged at the flange of described support plane lower end; In described support plane, be provided with first fixed via corresponding with via hole on described focusing knob lid turning axle; On described flange, be provided with and can pass so that described focusing knob support is fixed on to the second fixed via on projector equipment housing for gib screw;
Described screw is connected through via hole, the axis hole of described focusing knob and the first fixed via of described focusing knob support on described focusing knob lid turning axle, and described focusing knob and described focusing knob lid are fixed on described focusing knob support.
2. lens focusing device as claimed in claim 1, is characterized in that:
The axis hole of described focusing knob is also provided with one or more reinforcement extending along described shaft hole diameter direction around.
3. lens focusing device as claimed in claim 1, is characterized in that:
Described focusing knob is provided with the one or more the first slip muscle around described axis hole towards a side of described focusing knob lid.
4. lens focusing device as claimed in claim 3, is characterized in that:
The surface of described the first slip muscle is high light face.
5. lens focusing device as claimed in claim 1, is characterized in that:
Described focusing knob is provided with the one or more the second slip muscle around described axis hole towards a side of described focusing knob support.
6. lens focusing device as claimed in claim 5, is characterized in that:
The surface of described the second slip muscle is high light face.
7. lens focusing device as claimed in claim 1, is characterized in that:
The inwall of the axis hole of described focusing knob is high light face.
8. lens focusing device as claimed in claim 1, is characterized in that:
The outside surface of the turning axle of described focusing knob lid is provided with the 3rd slip muscle around described turning axle.
9. lens focusing device as claimed in claim 8, is characterized in that:
The surface of described the 3rd slip muscle is high light face.
10. lens focusing device as claimed in claim 1, is characterized in that:
The front of described focusing knob lid is high light face.
11. lens focusing devices as claimed in claim 1, is characterized in that:
The both sides of the turning axle of described focusing knob lid are provided with reference column;
The axis hole of described focusing knob is provided with at least 2 rotation through holes that can insert described reference column around.
12. lens focusing devices as claimed in claim 1, is characterized in that:
On the reference column of described focusing knob lid, be provided with the first pilot hole;
In the support plane of described focusing knob support, be also provided with the first positioning bar perpendicular to the first pilot hole on the described focusing knob lid of inserting of described support plane reference column.
13. lens focusing devices as claimed in claim 1, is characterized in that:
On the flange of described focusing knob support, be provided with the second pilot hole;
The housing inner side of described projector equipment is provided with second positioning bar corresponding with described the second pilot hole.
14. lens focusing devices as claimed in claim 1, is characterized in that:
On the flange of described focusing knob lid, be provided with the 3rd pilot hole;
The housing inner side of described projector equipment is provided with three positioning bar corresponding with described the 3rd pilot hole.
15. lens focusing devices as claimed in claim 1, is characterized in that:
The housing inner side of described projector equipment is also provided with the screw pole corresponding with the second fixed via of described focusing knob support.
16. lens focusing devices as claimed in claim 1, is characterized in that:
The side of described focusing knob lid also can be provided with flange;
On the flange of described focusing knob lid, be provided with and can pass described focusing knob lid is fixed on to the 3rd fixed via on projector equipment housing for gib screw.
17. lens focusing devices as claimed in claim 1, is characterized in that:
Described focusing knob and focusing knob lid are made by polyoxygenated polyoxymethylene or thermoplastic engineering plastic PC.
18. lens focusing devices as claimed in claim 1, is characterized in that:
Described focusing knob support is made by plated steel sheet or polyoxygenated polyoxymethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210076050.9A CN102590980B (en) | 2012-03-21 | 2012-03-21 | Lens focusing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210076050.9A CN102590980B (en) | 2012-03-21 | 2012-03-21 | Lens focusing device |
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| CN102590980A CN102590980A (en) | 2012-07-18 |
| CN102590980B true CN102590980B (en) | 2014-04-16 |
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| CN201210076050.9A Active CN102590980B (en) | 2012-03-21 | 2012-03-21 | Lens focusing device |
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| CN103676421B (en) * | 2012-09-19 | 2016-01-27 | 信泰光学(深圳)有限公司 | Electronic installation |
| CN111464091B (en) * | 2020-04-08 | 2021-12-03 | 成都极米科技股份有限公司 | Control method and control device of shift motor and projection system |
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| CN1892405A (en) * | 2005-07-05 | 2007-01-10 | 明基电通股份有限公司 | Optical machine module with lens multiplying factor regulation function |
| CN101033774A (en) * | 2006-03-07 | 2007-09-12 | 船井电机株式会社 | Rotational member, rotational member of projector and projector |
| CN201698078U (en) * | 2010-06-25 | 2011-01-05 | 杭州晶景光电有限公司 | Focusing mechanism for micro projector |
| CN202041701U (en) * | 2011-04-22 | 2011-11-16 | 亚洲光学股份有限公司 | Focal length adjustable lens module |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010054877A (en) * | 2008-08-29 | 2010-03-11 | Sony Corp | Projection type display device and optical unit |
| KR101173341B1 (en) * | 2009-09-11 | 2012-08-10 | 삼성전자주식회사 | Focusing device for beam projector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1892405A (en) * | 2005-07-05 | 2007-01-10 | 明基电通股份有限公司 | Optical machine module with lens multiplying factor regulation function |
| CN101033774A (en) * | 2006-03-07 | 2007-09-12 | 船井电机株式会社 | Rotational member, rotational member of projector and projector |
| CN201698078U (en) * | 2010-06-25 | 2011-01-05 | 杭州晶景光电有限公司 | Focusing mechanism for micro projector |
| CN202041701U (en) * | 2011-04-22 | 2011-11-16 | 亚洲光学股份有限公司 | Focal length adjustable lens module |
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