CN204229108U - A kind of projector lens focus control - Google Patents
A kind of projector lens focus control Download PDFInfo
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- CN204229108U CN204229108U CN201420749025.7U CN201420749025U CN204229108U CN 204229108 U CN204229108 U CN 204229108U CN 201420749025 U CN201420749025 U CN 201420749025U CN 204229108 U CN204229108 U CN 204229108U
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- fixture block
- lens barrel
- focus control
- groove
- adjustment fixture
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Abstract
The utility model discloses a kind of projector lens focus control, comprise lens barrel and sleeve, described sleeve is socketed described lens barrel, described sleeve is provided with the gathering sill carrying out along camera lens optical axis direction leading, and oblique slot, described lens barrel is provided with draw-in groove, also comprise orienting lug, adjusting handle and adjustment fixture block, described orienting lug is fixedly connected with described lens barrel and inserts in described gathering sill, described adjustment fixture block is inserted in described draw-in groove and also can along the circumferential direction be moved, and described adjusting handle is fixedly connected with described adjustment fixture block through described oblique slot.The utility model guarantee focus control size unlikely excessive while, ensure that the accuracy of focusing, by introducing guide collar, restriction inner lens cone can only move along optical axis direction, can not rotate because of focusing, the good concentricity of optical element and focusing time eyeglass can not rotate.
Description
Technical field
The utility model relates to projector's technical field, is specifically related to a kind of projector lens focus control, particularly relates to minitype projection machine lens focusing device.
Background technology
Projector also known as projector, be a kind of can by image or VIDEO PROJECTION to the equipment on curtain, same to computing machine, DV etc. can be connected and play corresponding vision signal by different interfaces.Projector is widely used in family, office, school and public place of entertainment.Along with projection industry flourish, projector has been deep in the middle of the daily life of ordinary populace, and with us, be seen everywhere projector miscellaneous.While industry fast development, the technology of projection have also been obtained continuous innovation, and new opplication miscellaneous also arises at the historic moment.Micro projector is that developed recently gets up a kind ofly to adopt LED or laser as light source, adopts LCOS or DMD as the Novel projection product of display chip, low in energy consumption, size is little, low price, and market scale grows stronger day by day.Due to the difference of use scenes, the distance between the metope that projector equipment and its projected image project or curtain is also different, in order to make the picture that casts out more clear, generally will regulate accordingly the focal length of camera lens.Therefore, all there are corresponding focus control or focusing structure in most of projector equipment, for the adjustment of lens focus.Usually, focusing module is all divided into two parts: fixing module and mobile module (mobile module can be single eyeglass, also can be that multiple optical element combination forms).The eyeglass of fixing module does not allow mobile or rotates, so focal length is the object being reached adjustment by mobile module along moving of optical axis direction.
Existing focusing module is realized by two kinds of modes usually:
1, be threaded
The mode that fixing module and mobile module are threaded connection coupled together, module in rotary moving, can make it move along optical axis direction, thus reach the object of focusing.
2, cam gear
Cam gear is arranged in mobile module usually, is made up of: flange three parts, cam canister and inner lens cone.Wherein flange is at outermost layer, and optical element is placed in inner lens cone by certain way.
Flange wall is dug one along the groove of the optical axis direction groove (be below called level trough and vertical slots) vertical with optical axis with.Be connected with cam canister (this connecting rod is focusing lever) through vertical slots by a connecting rod, only allow cam canister rotate and can not move along optical axis direction.Cam canister has dug a skewed slot (skewed slot and optical axis direction have certain angle, but out of plumb) in the position of the level trough of companion flange, be connected by another connecting rod through level trough with skewed slot with inner lens cone.Level trough on flange makes connecting rod can only move along optical axis direction, and namely inner lens cone can only move along optical axis direction.Stir focusing lever, cam canister rotates, and during rotation, skewed slot drives another connecting rod to move along optical axis direction, and inner lens cone also moves along optical axis direction thereupon, thus reaches the object of focusing.
This mode that is threaded eyeglass when focusing can rotate, and some eyeglass rotation can affect imaging effect, and the mode be threaded is difficult to the right alignment ensureing eyeglass.Although cam gear ensure that eyeglass non rotating in focussing process, the shortcoming that cam gear has physical dimension bigger than normal.
Utility model content
The technical problems to be solved in the utility model is, for the deficiencies in the prior art, provides a kind of projector lens focus control, overcomes prior art lens focusing device and may cause the defect that eyeglass rotates and size is bigger than normal.
The utility model for solving the problems of the technologies described above adopted technical scheme is:
A kind of projector lens focus control, comprise lens barrel and sleeve, described sleeve is socketed described lens barrel, described sleeve is provided with the gathering sill carrying out along camera lens optical axis direction leading, and oblique slot, described lens barrel is provided with draw-in groove, also comprise orienting lug, adjusting handle and adjustment fixture block, described orienting lug is fixedly connected with described lens barrel and inserts in described gathering sill, described adjustment fixture block is inserted in described draw-in groove and also can along the circumferential direction be moved, and described adjusting handle is fixedly connected with described adjustment fixture block through described oblique slot.
According to embodiment of the present utility model, described draw-in groove is set to semi-circular groove.
According to embodiment of the present utility model, described draw-in groove is set to ring groove.
According to embodiment of the present utility model, described adjustment fixture block is set to semicircular ring shape.
According to embodiment of the present utility model, described orienting lug is fixedly connected with described lens barrel by screw.
According to embodiment of the present utility model, described adjusting handle is threaded with described adjustment fixture block.
The beneficial effect of utility model: the utility model guarantee focus control size unlikely excessive while, ensure that the accuracy of focusing, by introducing guide collar, restriction inner lens cone can only move along optical axis direction, can not rotate because of focusing, the good concentricity of optical element and focusing time eyeglass can not rotate.
Accompanying drawing explanation
Below by with reference to accompanying drawing describe the utility model particularly in conjunction with example, advantage of the present utility model and implementation will be more obvious, wherein content shown in accompanying drawing is only for explanation explanation of the present utility model, and do not form restriction of going up in all senses of the present utility model, in the accompanying drawings:
Fig. 1 is the utility model projector lens focus control schematic diagram;
Fig. 2 is the utility model projector lens focus control partition part drawing;
Fig. 3 is the utility model projector lens focus control cut-open view.
Embodiment
As Fig. 1, shown in Fig. 2 and Fig. 3, the utility model projector lens focus control, comprise lens barrel 11 and sleeve 12, sleeve 12 is socketed lens barrel 11, sleeve 12 is provided with the gathering sill 121 carrying out along camera lens optical axis direction leading, and oblique slot 122, lens barrel 11 is provided with draw-in groove 111, also comprise orienting lug 123, adjusting handle 114 and adjustment fixture block 113, orienting lug 123 is fixedly connected with lens barrel 11 and inserts in gathering sill 121, regulate fixture block 113 to insert in draw-in groove 111 also can along the circumferential direction move, adjusting handle 114 is fixedly connected with adjustment fixture block 113 through oblique slot 122.According to embodiment of the present utility model, draw-in groove 111 is set to semi-circular groove or ring groove.Fixture block 113 is regulated to be set to semicircular ring shape.Orienting lug 123 is fixedly connected with lens barrel 11 by screw 124.According to embodiment of the present utility model, adjusting handle 114 is threaded with adjustment fixture block 113.
Referring to figs. 1 to Fig. 2, be this embodiment of the present utility model, a kind of minitype projection machine focusing structure, comprises sleeve 12, lens barrel 11, orienting lug 123, screw 124, and focusing handle 114, regulates fixture block 113.The periphery of sleeve 12 has the gathering sill 121 assembled for orienting lug 123, and supplies the oblique slot 122 of the oblique movement of focusing handle.Lens barrel 11 has threaded hole 112, ring groove 111.Fixture block 113 is regulated to insert ring groove 111.Sleeve 12 is socketed lens barrel 11.Orienting lug 123 is inserted gathering sill 121 and is connected with the threaded hole 112 of lens barrel 11 by screw 124.Adjusting handle 114 is connected with adjustment fixture block 113 through oblique slot 122.Adjusting handle 114 is moved during focusing, because adjusting handle 114 is fixedly connected with adjustment fixture block 113, adjusting handle 114 diagonally groove 122 moves, can drive the while of regulating fixture block 113 circumferentially to rotate and move along optical axis direction, regulate fixture block 113 in draw-in groove 111, move along optical axis direction so regulate the motion of fixture block 113 also can promote lens barrel 11.Gathering sill 121 limits orienting lug 123 and can only move along optical axis direction, and also just limiting lens barrel 11 can only move along optical axis direction, and does not rotate, thus reaches the object of focusing.
Those skilled in the art do not depart from essence of the present utility model and spirit, various deformation scheme can be had to realize the utility model, the foregoing is only the better feasible embodiment of the utility model, not thereby interest field of the present utility model is limited to, the equivalent structure change that all utilization the utility model instructionss and accompanying drawing content are done, is all contained within interest field of the present utility model.
Claims (6)
1. a projector lens focus control, it is characterized in that: comprise lens barrel and sleeve, described sleeve is socketed described lens barrel, described sleeve is provided with the gathering sill carrying out along camera lens optical axis direction leading, and oblique slot, described lens barrel is provided with draw-in groove, also comprise orienting lug, adjusting handle and adjustment fixture block, described orienting lug is fixedly connected with described lens barrel and inserts in described gathering sill, described adjustment fixture block is inserted in described draw-in groove and also can along the circumferential direction be moved, and described adjusting handle is fixedly connected with described adjustment fixture block through described oblique slot.
2. projector lens focus control according to claim 1, is characterized in that: described draw-in groove is set to semi-circular groove.
3. projector lens focus control according to claim 1, is characterized in that: described draw-in groove is set to ring groove.
4. projector lens focus control according to claim 1, is characterized in that: described adjustment fixture block is set to semicircular ring shape.
5. projector lens focus control according to claim 1, is characterized in that: described orienting lug is fixedly connected with described lens barrel by screw.
6. projector lens focus control according to claim 1, is characterized in that: described adjusting handle is threaded with described adjustment fixture block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420749025.7U CN204229108U (en) | 2014-12-03 | 2014-12-03 | A kind of projector lens focus control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420749025.7U CN204229108U (en) | 2014-12-03 | 2014-12-03 | A kind of projector lens focus control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204229108U true CN204229108U (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420749025.7U Active CN204229108U (en) | 2014-12-03 | 2014-12-03 | A kind of projector lens focus control |
Country Status (1)
| Country | Link |
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| CN (1) | CN204229108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018010235A1 (en) * | 2016-07-15 | 2018-01-18 | 广景视睿科技（深圳）有限公司 | Focusing device for projection lens |
-
2014
- 2014-12-03 CN CN201420749025.7U patent/CN204229108U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018010235A1 (en) * | 2016-07-15 | 2018-01-18 | 广景视睿科技（深圳）有限公司 | Focusing device for projection lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518067 3C, 3D, Block CD, Building 7, Xinghua Industrial Building, No. 4, Industrial 6th Road, Huaguoshan Community, Merchants Street, Nanshan District, Shenzhen, Guangdong Province Patentee after: Shenzhen Anhua Photoelectric Technology Co.,Ltd. Address before: 518000 room 201-202, building D, Chuangye No.1, 43 Yanshan Road, Shekou, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN ANHUA OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |