CN105445891A - Focusing structure - Google Patents
Focusing structure Download PDFInfo
- Publication number
- CN105445891A CN105445891A CN201510897441.0A CN201510897441A CN105445891A CN 105445891 A CN105445891 A CN 105445891A CN 201510897441 A CN201510897441 A CN 201510897441A CN 105445891 A CN105445891 A CN 105445891A
- Authority
- CN
- China
- Prior art keywords
- urceolus
- camera lens
- bar
- groove
- bar head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
Abstract
The invention discloses a focusing structure. The focusing structure comprises an outer barrel, an adjusting rod and a lens, wherein the inner wall of the outer barrel is in clearance fit with the outer wall of the lens; the side surface of the outer barrel is provided with a hole for insertion of the adjusting rod; the adjusting rod includes a rod body and a rod head; the rod body is in clearance fit with the outer barrel; a groove is formed in the outer wall of the lens; the rod head is inserted into the groove of the lens; focusing can be realized through dialing of the lens by means of the road head; both the rod body and the rod head are cylinder structures; the diameter of the rod body is greater than the diameter of the rod head; the axis of the rod body and the axis of the rod head are misaligned; when the adjusting rod rotates in the hole of the outer barrel, the rod head makes circular motion around the axis of the rod body; and an inner hexagonal groove is formed in the tail end of the rod body, and is used for rotating the adjusting rod through an inner hexagonal wrench. By means of coordination of the eccentric adjusting rod and the groove in the movable lens barrel, the focusing structure converts the rotation motion of the adjusting rod into a translational motion of the movable lens barrel; the size of the adjusting rod is greatly less than the size of the movable lens barrel; and the focusing structure occupies small volume, and is specifically suitable for equipment with small volume and limited operation space.
Description
Technical field
The invention belongs to optical field, more specifically, relate to a kind of focusing structure of optical system.
Background technology
In optical system, for making the focal plane of optical system aim at specific axial location, need to focus to optical system.Focusing is usually by lens or the lens combination realization of moving optical system.Common focusing structure has helicitic texture, cam structure and translation structure three kinds.Tangential rotation is converted into axial movement by helicitic texture, and when lens unit rotates, its axial location also changes, thus plays the function of focusing.When helicitic texture is focused, lens unit can rotate, and causes the trouble in physical construction.Cam structure realizes focusing with coordinating of the cam path on draw tube by the cam on focusing ring, and when focusing ring rotates, cam acts on cam path, gives draw tube acting force vertically, draw tube is moved.Cam structure requires that cam and cam path have very high machining precision.
Translation structure contacts to realize focusing by translation unit with lens unit, when translation structure is along the generation translation of lens unit optical axis direction, drives lens unit along its axially-movable.When translation structure is focused, translation structure needs to take certain volume, makes physical construction become complicated.
Summary of the invention
For the defect of prior art, the object of the present invention is to provide a kind of focusing structure, to be intended to solve in prior art because translation structure needs to take certain volume, to make the problem that physical construction becomes complicated.
The invention provides a kind of focusing structure, comprise urceolus, adjuster bar and camera lens; The inwall of described urceolus and the outer wall of described camera lens are clearance fit, and the side of described urceolus is porose for inserting adjuster bar; Described adjuster bar comprises shaft and bar head, and described shaft and urceolus are clearance fit; The outer wall of described camera lens has groove, and described bar head inserts in the groove of described camera lens, stirs described camera lens to realize focusing by described bar head.
The present invention be one take volume little, be applicable to compact optical device, continuously adjustable focusing structure.
Further, described shaft and described bar head are cylindrical structure, and the diameter of described shaft is greater than the diameter of described bar head, and described shaft does not overlap with the axis of described bar head, when rotating in the hole of adjuster bar at urceolus, bar head moves in a circle around the axis of shaft.
Further, the fluting direction of described camera lens is perpendicular to the optical axis of described camera lens, and the length of groove is greater than the maximum gauge that described bar head moves in a circle, and the width of groove is greater than the diameter of described bar head.
Present invention also offers a kind of focusing structure, comprise urceolus, adjuster bar, trim ring and camera lens; The inwall of described urceolus and the outer wall of described camera lens are clearance fit; The side of described urceolus is porose for inserting described adjuster bar; Described adjuster bar comprises shaft and bar head, and described shaft and urceolus are clearance fit, trim ring by fixing with urceolus, for limiting the position of described adjuster bar in described urceolus; The outer wall of described camera lens is provided with groove, and described bar head inserts in the groove of described camera lens, stirs described camera lens to realize focusing by described bar head.
Further, described shaft and described bar head are cylindrical structure, and the diameter of described shaft is greater than the diameter of described bar head, and described shaft does not overlap with the axis of described bar head, when rotating in the hole of adjuster bar at urceolus, bar head moves in a circle around the axis of shaft.
Further, described shaft end is provided with groove, for coordinating with spanner, and rotates described adjuster bar by spanner.Wherein, described groove shapes be a word, cross, interior hexagonal, plum blossom, triangle, pentagram, U-shaped, Y shape or other shapes that can coordinate with screwdriver.
Further, the fluting direction of described camera lens is perpendicular to the optical axis of camera lens, and the length of groove is greater than the maximum gauge that described bar head moves in a circle, and the width of groove is greater than the diameter of described bar head.
Further, described trim ring and described urceolus are fixed by screw thread, glue fixes or interference fit is fixed.
Further, have gap between described trim ring and described adjuster bar, ensure that trim ring prevents adjuster bar from deviating from from urceolus, trim ring does not affect adjuster bar and rotates in the side opening of urceolus.
Compared with prior art, the present invention has following characteristics:
(1) do not cause the rotation treating focusing structure, only make its translation.
(2) the present invention is by the cooperation of the groove on eccentric adjuster bar and draw tube, by the translation motion of the convert rotational motion of adjuster bar in order to draw tube, the size of adjuster bar can much smaller than the size of draw tube, so focusing structure to take volume little, be specially adapted to the equipment that small size, operating space are limited.
(3) compared to cam structure, the present invention is not high to requirement on machining accuracy.
Accompanying drawing explanation
Fig. 1 is the sectional view of the focusing structure that first embodiment of the invention provides;
Fig. 2 is the structural representation of the adjuster bar in the focusing structure that provides of first embodiment of the invention;
The sectional view of the focusing structure that Fig. 3 second embodiment of the invention provides;
The structural representation of the adjuster bar in the focusing structure that Fig. 4 second embodiment of the invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In order to the further description embodiment of the present invention provides focusing structure, existing details are as follows by reference to the accompanying drawings:
As shown in Figure 1 and Figure 2, the focusing structure that first embodiment of the invention provides is made up of shell 1, adjuster bar 2 and camera lens 3 three part.The inwall of urceolus 1 and the outer wall of camera lens 3 are clearance fit.The porose insertion adjuster bar 2 in side of urceolus 1.Adjuster bar 2 comprises two parts right cylinder, and wherein larger right cylinder is shaft 4 is clearance fit with urceolus 1, and wherein less right cylinder is that bar head 5 inserts in the groove of camera lens 3, is used for stirring camera lens 3 to realize focusing.The shaft 4 of adjuster bar 2 does not overlap with the axis of bar head 5, and when described adjuster bar 2 rotates in the hole of urceolus 1, bar head 5 moves in a circle around the axis of shaft 4.The outer wall of camera lens 3 has groove, and fluting direction is perpendicular to the optical axis of camera lens, and the maximum gauge that the bar head 5 that the length of groove is greater than adjuster bar 2 moves in a circle, the width of groove is greater than the diameter of the bar head 5 of adjuster bar 2.The length of adjuster bar 2 enough makes its end expose shell 1 and leaves sufficient length in the outside of shell 1.The part that adjuster bar 2 exposes shell 1 can be used as handle and does rotation process for user.
First embodiment is simple structure of the present invention, and structure is simple, and stability is high.
As shown in Figure 3, Figure 4, the focusing structure that second embodiment of the invention provides is made up of urceolus 6, adjuster bar 7, trim ring 8 and camera lens 3 four part.The inwall of urceolus 6 and the outer wall of camera lens 3 are clearance fit.The porose insertion adjuster bar 7 in side of urceolus 6.
Adjuster bar 7 comprises two parts right cylinder, and wherein larger right cylinder is shaft 9 is clearance fit with urceolus 6, and wherein less right cylinder is that bar head 10 inserts in the groove of camera lens 3, is used for stirring camera lens 3 to realize focusing.The shaft 9 of adjuster bar 7 does not overlap with the axis of bar head 10, and when adjuster bar 7 rotates in the hole of urceolus 6, bar head 10 moves in a circle around the axis of shaft 9.Shaft 9 end of adjuster bar 7 has interior hex slot, therefore can use allen key rotation adjusting lever 7.
The outer wall of camera lens 3 has groove, and fluting direction is perpendicular to the optical axis of camera lens, and the maximum gauge that the bar head 10 that the length of groove is greater than adjuster bar 7 moves in a circle, the width of groove is greater than the diameter of the bar head 10 of adjuster bar 7.
Trim ring 8 is by fixing, for limiting the position of adjuster bar 7 in urceolus 6 with urceolus 6.Trim ring 8 is with urceolus 6 is fixed by screw thread, glue is fixed, interference fit is fixed or other modes are fixed.There is gap between trim ring 8 and adjuster bar 7, ensure that trim ring 8 prevents adjuster bar 7 from deviating from from urceolus 6, but trim ring 8 does not affect adjuster bar 7 rotates in the side opening of urceolus 6.
Adjuster bar is hidden in urceolus by the second embodiment, and only expose interior hexagonal groove for adjustment, user-friendliness is high, uses general hex wrench instrument and adjustable.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a focusing structure, is characterized in that, comprises urceolus (1), adjuster bar (2) and camera lens (3);
The inwall of described urceolus (1) and the outer wall of described camera lens (3) are clearance fit, and the side of described urceolus (1) is porose for inserting adjuster bar (2);
Described adjuster bar (2) comprises shaft (4) and bar head (5), and described shaft (4) and urceolus (1) are clearance fit;
The outer wall of described camera lens (3) has groove, and described bar head (5) is inserted in the groove of described camera lens (3), stirs described camera lens (3) to realize focusing by described bar head (5).
2. focusing structure as claimed in claim 1, it is characterized in that, described shaft (4) and described bar head (5) are cylindrical structure, the diameter of described shaft (4) is greater than the diameter of described bar head (5), described shaft (4) does not overlap with the axis of described bar head (5), when adjuster bar (2) rotates in the hole of urceolus (1), bar head (5) moves in a circle around the axis of shaft (4).
3. focusing structure as claimed in claim 1 or 2, it is characterized in that, the fluting direction of described camera lens (3) is perpendicular to the optical axis of described camera lens (3), the length of groove is greater than the maximum gauge that described bar head (5) moves in a circle, and the width of groove is greater than the diameter of described bar head (5).
4. a focusing structure, is characterized in that, comprises urceolus (6), adjuster bar (7), trim ring (8) and camera lens (3);
The inwall of described urceolus (6) and the outer wall of described camera lens (3) are clearance fit; The side of described urceolus (6) is porose for inserting described adjuster bar (7);
Described adjuster bar (7) comprises shaft (9) and bar head (10), and described shaft (9) and urceolus (6) are clearance fit,
Trim ring (8) is by fixing, for limiting the position of described adjuster bar (7) in described urceolus (6) with urceolus (6);
The outer wall of described camera lens (3) is provided with groove, and described bar head (5) is inserted in the groove of described camera lens (3), stirs described camera lens (3) to realize focusing by described bar head (5).
5. focusing structure as claimed in claim 4, it is characterized in that, described shaft (9) and described bar head (10) are cylindrical structure, the diameter of described shaft (9) is greater than the diameter of described bar head (10), described shaft (9) does not overlap with the axis of described bar head (10), when adjuster bar (7) rotates in the hole of urceolus (6), bar head (10) moves in a circle around the axis of shaft (9).
6. the focusing structure as described in claim 4 or 5, is characterized in that, described shaft (9) end is provided with groove, for coordinating with spanner, and rotates described adjuster bar (7) by spanner.
7. focusing structure as claimed in claim 6, it is characterized in that, described groove shapes is a word, cross, interior hexagonal, plum blossom, triangle, pentagram, U-shaped, Y shape or other shapes that can coordinate with screwdriver.
8. the focusing structure as described in any one of claim 4-6, it is characterized in that, the fluting direction of described camera lens (3) is perpendicular to the optical axis of camera lens, the length of groove is greater than the maximum gauge that described bar head (10) moves in a circle, and the width of groove is greater than the diameter of described bar head (10).
9. the focusing structure as described in any one of claim 4-7, is characterized in that, described trim ring (8) is with described urceolus (6) is fixed by screw thread, glue fixes or interference fit is fixed.
10. the focusing structure as described in any one of claim 4-7, it is characterized in that, gap is had between described trim ring (8) and described adjuster bar (7), ensure that trim ring (8) prevents adjuster bar (7) from deviating from from urceolus (6), trim ring (8) does not affect adjuster bar (7) and rotates in the side opening of urceolus (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510897441.0A CN105445891A (en) | 2015-12-07 | 2015-12-07 | Focusing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510897441.0A CN105445891A (en) | 2015-12-07 | 2015-12-07 | Focusing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105445891A true CN105445891A (en) | 2016-03-30 |
Family
ID=55556278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510897441.0A Pending CN105445891A (en) | 2015-12-07 | 2015-12-07 | Focusing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105445891A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107263372A (en) * | 2017-06-29 | 2017-10-20 | 河南中光学集团有限公司 | A kind of lens protecting mirror special spanner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5961803A (en) * | 1982-09-30 | 1984-04-09 | Matsushita Electric Ind Co Ltd | Lens barrel |
| CN202995128U (en) * | 2012-12-14 | 2013-06-12 | 深圳市大族激光科技股份有限公司 | Laser focusing adjustment device |
| CN203502666U (en) * | 2013-09-11 | 2014-03-26 | 南京英星光学仪器有限公司 | CCD conversion interface lens |
| CN205333950U (en) * | 2015-12-07 | 2016-06-22 | 肯维捷斯（武汉）科技有限公司 | Focusing structure |
-
2015
- 2015-12-07 CN CN201510897441.0A patent/CN105445891A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5961803A (en) * | 1982-09-30 | 1984-04-09 | Matsushita Electric Ind Co Ltd | Lens barrel |
| CN202995128U (en) * | 2012-12-14 | 2013-06-12 | 深圳市大族激光科技股份有限公司 | Laser focusing adjustment device |
| CN203502666U (en) * | 2013-09-11 | 2014-03-26 | 南京英星光学仪器有限公司 | CCD conversion interface lens |
| CN205333950U (en) * | 2015-12-07 | 2016-06-22 | 肯维捷斯（武汉）科技有限公司 | Focusing structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107263372A (en) * | 2017-06-29 | 2017-10-20 | 河南中光学集团有限公司 | A kind of lens protecting mirror special spanner |
| CN107263372B (en) * | 2017-06-29 | 2023-03-14 | 河南中光学集团有限公司 | Special spanner for lens protective glass |
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Application publication date: 20160330 |
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| WD01 | Invention patent application deemed withdrawn after publication |