CN101661152B - Focusing composition and projector provided with same - Google Patents
Focusing composition and projector provided with same Download PDFInfo
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- CN101661152B CN101661152B CN2008103042462A CN200810304246A CN101661152B CN 101661152 B CN101661152 B CN 101661152B CN 2008103042462 A CN2008103042462 A CN 2008103042462A CN 200810304246 A CN200810304246 A CN 200810304246A CN 101661152 B CN101661152 B CN 101661152B
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- focusing
- camera lens
- lens barrel
- connecting portion
- button
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Abstract
The invention relates to a focusing composition which comprises a lens module group and a focusing key. The lens module group comprises an outer lens barrel and an inner lens barrel, wherein the inner lens barrel is installed in the outer lens barrel, and a lens is contained in the inner lens barrel. A guide groove and at least one cam groove are arranged on the side wall of the outer lens barrel. A guide pin engaged with the guide groove is extended out from the inner lens barrel along the radial direction thereof, a spacing groove corresponding to the cam groove is arranged on the side wall of the inner lens barrel, and the cam groove is obliquely arranged relative to a central axis of the inner lens barrel. A cam pin is outwards extended from the lens along the radial direction and penetrates through the spacing groove and the cam groove. The focusing key is matched with the outer lens barrel, and the lens moves along the axial direction of the lens module group when the focusing key is pushed along the axial direction of the lens module group. The lens of a projector provided by the invention can move along the axial direction of the lens module group to realize focusing through pushing and pressing the focusing key. The invention also provides a projector provided with the focusing composition.
Description
Technical field
The present invention relates to a kind of projector that focuses and make up and have this focusing combination.
Background technology
Along with the development of shadow casting technique, various types of projectors are widely applied to commercial affairs, teaching, and occasions such as home theater, simultaneously, minitype projection machine is also greatly developed and is used, and especially hand-held projector can carry or demonstrate as the electric torch one hand.At present, described projector is generally by a projects images generation device, and a camera lens module and a shell are formed.Described projects images generation device and camera lens module all are placed in the described shell, and described projects images generation device produces needs image projected, and throws away through described camera lens module.For making image projected clear, the focusing ring that one rotation often is set on this camera lens module is to the operation of focusing of camera lens module, yet focuses by the mode of rotating focusing ring, and it is cumbersome to operate, especially hand-held projector almost is difficult to one hand and finishes the focusing operation.
Summary of the invention
In view of this, be necessary to provide focus easily combination and have the projector that this focusing is made up of a kind of focusing.
A kind of focusing combination, it comprises a camera lens module, described camera lens module comprises that an outer lens barrel and is installed in the inner lens cone in this outer lens barrel, is equipped with a camera lens in the described inner lens cone.The sidewall of described outer lens barrel offers the optical axis cam path at an angle of a guide groove parallel with the optical axis of described camera lens module and at least one and described camera lens module.Described inner lens cone have one with the pilot pin of described guide groove engagement, the sidewall of this inner lens cone offers the stopper slot corresponding with described cam path, the oblique setting of the described relatively optical axis of this cam path.Described camera lens radially extends a cam pin outward along it, and this cam pin passes this stopper slot and cam path.Described focusing combination also further comprises a focusing button, and described focusing button cooperates with described outer lens barrel, and when the axial direction along described camera lens module promoted described focusing button, described camera lens moved around the axial direction along described camera lens module.
A kind of projector, it comprises that a camera lens module and accommodates the shell of described camera lens module.Described camera lens module comprises that an outer lens barrel and is installed in the inner lens cone in this outer lens barrel, is equipped with a camera lens in the described inner lens cone.The sidewall of described outer lens barrel offers the optical axis cam path at an angle of a guide groove parallel with the optical axis of described camera lens module and at least one and described camera lens module.Described inner lens cone have one with the pilot pin of described guide groove engagement, the sidewall of this inner lens cone offers the stopper slot corresponding with described cam path, the oblique setting of the described relatively optical axis of this cam path.Described camera lens radially extends a cam pin outward along it, and this cam pin passes this stopper slot and cam path.Described projector also further comprises a focusing button, and described focusing button cooperates with described outer lens barrel, and when the axial direction along described camera lens module promoted described focusing button, described camera lens moved around the axial direction along described camera lens module.Described shell be provided with a light hole that passes for described camera lens and one with the corresponding chute of described focusing button.Described chute is opened in the sidewall that shell is parallel to described optical axis, and described light hole is opened in the sidewall of shell perpendicular to described optical axis.
Compared with prior art, focusing provided by the invention combination can be by pushing described focusing button, through the transmission of described outer lens barrel and inner lens cone, makes described camera lens along the moving axially of camera lens module, thereby reach the purpose of focusing.The present invention also provides the projector of this focusing combination of a tool.
Description of drawings
The assembling synoptic diagram of the projector that Fig. 1 provides for embodiment of the present invention.
Assembling synoptic diagram when Fig. 2 throws off shell for the projector among Fig. 1.
Fig. 3 is the perspective exploded view of the projector among Fig. 1.
Fig. 4 is the assembling synoptic diagram of the camera lens module of the projector among Fig. 1.
Fig. 5 is the decomposing schematic representation of the camera lens module of the projector among Fig. 1.
Embodiment
See also Fig. 1 and Fig. 2, the projector 100 that embodiment of the present invention provides comprises a projects images generation device 10, one focusing combination focusing combinations 200 and one shell 30.Described focusing combination 200 comprises a camera lens module 20 and a focusing button 40.Described focusing combination 200 is placed in described shell 30 and is fixed on the described projects images generation device 10.
See also Fig. 3, described projects images generation device 10 is fixed in the described shell 30 and the image of its generation throws away through described camera lens module 20.This projection projects images generation device 10 is from extending a plurality of reference columns 12 that are used for fixing described camera lens module 20 near on the surface 11 of camera lens module 20.
See also Fig. 4 and Fig. 5, described camera lens module 20 comprises outer lens barrel 210, one inner lens cones 220 and a camera lens 230.
Described outer lens barrel 210 has a guide groove 212 on its sidewall 211, be evenly distributed on three cam paths 213 and one first connecting portion 214 on the sidewall 211.Described guide groove 212 is parallel with the optical axis of described camera lens module 20, described cam path 213 has an angle with described optical axis, being shaped as by two parallel edges and two class rectangles that relative circular arc is formed of this cam path 213, described first connecting portion 214 are used for cooperating with described focusing button 40 action with the described focusing button 40 of transmission.In the present embodiment, described first connecting portion 214 is an outward extending projection of outside surface from outer lens barrel 210.
Described inner lens cone 220 is installed in the outer lens barrel 210 and is fixed on the described projects images generation device 10.This inner lens cone 220 have one with the pilot pin 221 of described guide groove 212 engagements, described pilot pin 221 can slide along described optical axis direction along described guide groove 212.Offer the stopper slot 223 corresponding on the sidewall 222 of this inner lens cone 220 with described cam path 213, being shaped as of described stopper slot 223 by two parallel edges and two class rectangles that relative circular arc is formed, described cam path 213 along the axial length of inner lens cone 220 greater than described stopper slot 223 along the axial length of described inner lens cone 220, and described stopper slot 223 has an angle with described optical axis.Described cam path 213 extends toward light direction clockwise from the light direction of going into of camera lens module 20, and described stopper slot 223 extends toward light direction counterclockwise from going into light direction.
This inner lens cone 220 has a fixed head 224 near the end face on the surface 11 of camera lens module 20, have the pilot hole 225 corresponding with described reference column 12 on the described fixed head 224, described inner lens cone 220 is fixed on the described projects images generation device 10 by this fixed head 224.Described pilot pin 221 can be structure as a whole with described inner lens cone 220, also can be the branch body structure, and in this city embodiment, for easy to assembly, described pilot pin 221 is the branch body structure with described inner lens cone 220.
Described camera lens 230 is installed in the inner lens cone 220.Described camera lens 230 is along its three cam pins 231 that extend radially outwardly out, and this cam pin 231 passes this cam path 213 and stopper slot 223.Described cam pin 231 is can be around the roller structure of its central shaft rotation, thereby can reduce the friction between cam pin 231 and cam path 213 and the stopper slot 223, and the diameter of described cam pin 231 equals the width of two parallel edges of described cam path 213 or stopper slot 223, the width of two parallel edges of certain described cam path 213 also can equal the width of two parallel edges of stopper slot 223, does not produce vibration when cam pin 231 is slided.When lens barrel 210 moves along its axis outside described, described cam pin 231 will slide with described cam path 213, and simultaneously, this cam pin 231 is in again in the stopper slot 223, therefore, the movement locus of this cam pin 231 is the movement locus of the through hole of described cam path 213 and stopper slot 223 formation.Design the angle between described stopper slot 223 and the described cam path 213 according to actual needs, can make this cam pin 231 at the mobile range of described optical axis direction less than the mobile range of lens barrel outside described 210 along optical axis direction.Described cam pin 231 can be structure as a whole with described camera lens 230, also can be the branch body structure, and in the present embodiment, for easy to assembly, described cam pin 231 is the branch body structure with described camera lens 230.
Described shell 30 is used to accommodate described projects images generation device 10 and camera lens module 20.Described shell 30 is provided with a light hole 31 that passes for described camera lens 230 and a chute 32 corresponding with described focusing button 40.Described chute 32 is opened in the sidewall that shell 30 is parallel to described optical axis, and described light hole 31 is opened in the sidewall of shell 30 perpendicular to described optical axis.
See also Fig. 3, described focusing button 40 is installed in the described chute 32, be used to drive described camera lens module 20 move and realize the focusing.This focusing button 40 comprises a body 41, one buttons 42 and one second connecting portion 43.Described body 41 is one to be parallel to the flat board of described optical axis, and it has one near the inside surface 411 of first connecting portion 214 and outside surface 412 away from first connecting portion 214.Toward extending away from body 41 directions, this button 42 is used for pushing this focusing button 40 for the user and moves along described optical axis direction described button 42 from described outside surface 412.Described second connecting portion 43, is used for cooperating with described first connecting portion 214 toward extending away from body 41 directions from described inside surface 411.In the present embodiment, described second connecting portion 43 is one to have the resettlement section of " U " type groove, and described first connecting portion 214 is contained in described " U " type groove, is appreciated that, described " U " type groove 431 is a semi-open slot, can make things convenient for the assembling of first connecting portion 214.Certainly, also can be that described first connecting portion 214 is a resettlement section of radially extending outward along outer lens barrel, described second connecting portion 43 is a projection, this second connecting portion 43 is contained in described resettlement section.And described second connecting portion 43 can also be a protruding pin, blind hole or through hole that this moment, described first connecting portion 214 can cooperate with described first connecting portion 214 for one on the outer wall that is opened in described outer lens barrel 210.
When assembling described projector 100, at first described camera lens 230 is installed in the described inner lens cone 220; Secondly described inner lens cone 220 is installed in the described outer lens barrel 210; Once more described pilot pin 221 is stretched into from guide groove 212 and be fixed on the inner lens cone 220, described cam pin 231 stretched into from described cam path 213 and stopper slot 223 formed through holes be fixed on the camera lens 230, make described outer lens barrel 210, inner lens cone 220 and camera lens 230 are assembled into a camera lens module 20.With described focusing button 40 and these camera lens module 20 engagements; To described camera lens module 20 be fixed on the described projects images generation device 10 by described fixed head 224 again; With described projects images generation device 10, camera lens module 20 and focusing button 40 are placed in described shell 30 together at last, and make this camera lens module 20 aim at light hole 31, and this button 41 is reached outside the shell 30 from described 32.
In the present embodiment, when needs during to 100 focusing of described projector, push described button 42, focusing button 40 is slided along optical axis direction, nationality is by the transmission of described second connecting portion 43 and first connecting portion 214, and outer lens barrel 210 is moved along optical axis direction.Also will slide under the drive of the cam path 213 of lens barrel 210 outside of described cam pin 231 along the stopper slot 223 of inner lens cone 220.This cam pin 231 also around the central shaft rotation of self, reduces the friction between this cam pin 231 and cam path 213 and the stopper slot 223, make simultaneously described cam pin 231 in the translational speed of optical axis direction less than the translational speed of lens barrel outside described 210 along optical axis direction.Thereby make described cam pin 231 do minute movement and be accompanied by rotation, drive described camera lens 230 and move, realize purpose 100 focusing of described projector along optical axis direction along optical axis direction.
Compared with prior art, focusing provided by the invention combination can be by pushing described focusing button, through the transmission of described outer lens barrel and inner lens cone, makes described camera lens along the moving axially of camera lens module, thereby reach the purpose of focusing. The present invention also provides the projector of this focusing combination of a tool.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (11)
1. focusing combination, it comprises a camera lens module, described camera lens module comprises that an outer lens barrel and is installed in the inner lens cone in this outer lens barrel, be equipped with a camera lens in the described inner lens cone, it is characterized in that, the sidewall of described outer lens barrel offers the optical axis cam path at an angle of a guide groove parallel with the optical axis of described camera lens module and at least one and described camera lens module, described inner lens cone have one with the pilot pin of described guide groove engagement, the sidewall of this inner lens cone offers the stopper slot corresponding with described cam path, the oblique setting of the described relatively optical axis of this cam path, described camera lens radially extends a cam pin outward along it, this cam pin passes this stopper slot and cam path, described focusing combination also further comprises a focusing button, described focusing button cooperates with described outer lens barrel, when the axial direction along described camera lens module promoted described focusing button, described camera lens moved around the axial direction along described camera lens module.
2. focusing combination as claimed in claim 1 is characterized in that described outer lens barrel has first connecting portion, and described focusing button has second connecting portion near a side of described first connecting portion, and described first connecting portion cooperates with second connecting portion.
3. focusing as claimed in claim 2 combination is characterized in that, described first connecting portion is a radially projection of extension outward along outer lens barrel, and described second connecting portion is one to have the resettlement section of " U " type groove, and described projection is contained in described " U " type groove.
4. focusing combination as claimed in claim 2, it is characterized in that described first connecting portion is a resettlement section of radially extending outward along outer lens barrel, this resettlement section has " U " type groove, described second connecting portion is a projection, and this projection is contained in described resettlement section.
5. focusing as claimed in claim 2 combination is characterized in that described second connecting portion is a protruding pin, and described first connecting portion is a blind hole or a through hole that cooperates with described protruding pin that is opened on the outer wall of described outer lens barrel.
6. focusing combination as claimed in claim 1 is characterized in that described pilot pin and described inner lens cone are for dividing body structure.
7. focusing combination as claimed in claim 1 is characterized in that, states cam pin and described camera lens for dividing body structure.
8. projector, it is characterized in that, described projector comprises that focusing as claimed in claim 1 combination and accommodates the shell of described camera lens module, described shell be provided with a light hole that passes for described camera lens and one with the corresponding chute of described focusing button, described chute is opened in the sidewall that shell is parallel to described optical axis, and described light hole is opened in the sidewall of shell perpendicular to described optical axis.
9. projector as claimed in claim 8 is characterized in that, described projector also comprises a projects images generation device, and the image that this projects images generation device is fixed on described shell and its generation throws away through described camera lens module.
10. projector as claimed in claim 9 is characterized in that, described inner lens cone has a fixed head away from an end of light hole, and described inner lens cone is fixed on the described projects images generation device by this fixed head.
11. projector as claimed in claim 8, it is characterized in that, described outer lens barrel has a projection of radially extending outward along outer lens barrel, described focusing button also comprises a body and a button, described body is parallel to described optical axis, it has an inside surface and the outside surface away from described projection near described projection, and toward extending away from the body direction and stretch out outside the shell, described button extends away from the body direction from described inside surface is past described button from described outside surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103042462A CN101661152B (en) | 2008-08-27 | 2008-08-27 | Focusing composition and projector provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103042462A CN101661152B (en) | 2008-08-27 | 2008-08-27 | Focusing composition and projector provided with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101661152A CN101661152A (en) | 2010-03-03 |
| CN101661152B true CN101661152B (en) | 2011-08-24 |
Family
ID=41789274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008103042462A Expired - Fee Related CN101661152B (en) | 2008-08-27 | 2008-08-27 | Focusing composition and projector provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101661152B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399451B (en) * | 2013-08-16 | 2015-09-16 | 深圳市帅映科技有限公司 | A kind of laser projection |
| CN105142059A (en) * | 2015-08-26 | 2015-12-09 | 东莞市库森电子科技有限公司 | Headset having projection function |
| CN107065404B (en) * | 2017-02-24 | 2019-01-18 | 苏州佳世达光电有限公司 | A kind of camera lens adjustment mould group and projection arrangement |
| CN107462995B (en) * | 2017-05-27 | 2020-06-19 | 深圳多哚新技术有限责任公司 | A shading subassembly and virtual reality equipment for virtual reality equipment |
| CN109307916B (en) * | 2017-07-28 | 2021-05-18 | 中国科学院长春光学精密机械与物理研究所 | Lens focusing method, focusing mechanism and lens |
| CN107678123A (en) * | 2017-11-09 | 2018-02-09 | 宁波舜宇红外技术有限公司 | A kind of focus adjusting mechanism and the camera lens containing the mechanism |
| CN111031207A (en) * | 2019-12-16 | 2020-04-17 | 深圳市瀚晖威视科技有限公司 | Lens back focus continuous adjusting device and camera |
| CN111830663B (en) * | 2020-08-04 | 2021-04-13 | 吉林大学 | Light small-size high accuracy curved surface cam focusing mechanism |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285322A (en) * | 1992-09-08 | 1994-02-08 | Eastman Kodak Company | Mechanisms for mounting cam barrels |
| US6204977B1 (en) * | 1998-09-09 | 2001-03-20 | Olympus Optical Co., Ltd. | Lens barrel |
| CN1721900A (en) * | 2004-07-05 | 2006-01-18 | 鸿富锦精密工业（深圳）有限公司 | Digital camera lens module and assemble method thereof |
| CN1847899A (en) * | 2005-04-12 | 2006-10-18 | 亚洲光学股份有限公司 | Barrel combination with cam mechanism and lens combination |
-
2008
- 2008-08-27 CN CN2008103042462A patent/CN101661152B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285322A (en) * | 1992-09-08 | 1994-02-08 | Eastman Kodak Company | Mechanisms for mounting cam barrels |
| US6204977B1 (en) * | 1998-09-09 | 2001-03-20 | Olympus Optical Co., Ltd. | Lens barrel |
| CN1721900A (en) * | 2004-07-05 | 2006-01-18 | 鸿富锦精密工业（深圳）有限公司 | Digital camera lens module and assemble method thereof |
| CN1847899A (en) * | 2005-04-12 | 2006-10-18 | 亚洲光学股份有限公司 | Barrel combination with cam mechanism and lens combination |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101661152A (en) | 2010-03-03 |
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