CN100368852C - Zoom lens structure - Google Patents
Zoom lens structure Download PDFInfo
- Publication number
- CN100368852C CN100368852C CNB200510065965XA CN200510065965A CN100368852C CN 100368852 C CN100368852 C CN 100368852C CN B200510065965X A CNB200510065965X A CN B200510065965XA CN 200510065965 A CN200510065965 A CN 200510065965A CN 100368852 C CN100368852 C CN 100368852C
- Authority
- CN
- China
- Prior art keywords
- thread
- mirror cell
- group mirror
- stationary magazine
- magazine creel
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The present invention relates to a zoom lens structure which comprises a fixed cylinder, a front group lens chamber and a rear group lens chamber, wherein the fixed cylinder is provided with a front screw thread and a rear screw thread, the front group lens chamber is provided with a front thread which is screwed with the front screw thread correspondingly, the rear group lens chamber is provided with a rear thread which is screwed with the rear screw thread correspondingly, and the front and the rear group lens chambers move in an axial mode oppositely to the fixed cylinder respectively to achieve the zooming purpose. Because of the structure, when the rear group lens chamber moves in an axial mode, the radial surface of the rear group lens chamber can not generate inclination, and the stability and the precision of the rear group lens chamber can be improved. Besides, when moves in an axial mode, the rear group lens chamber does not need three designed spiral slots, so the manufacture mode can be simplified and the part number can be reduced to reduce the cost.
Description
Technical field
The invention relates to a kind of Zoom lens structure, refer to a kind of Zoom lens structure that is applicable to electronic product especially, for example projector, camera etc. with two groups of zoom mirror cells.
Background technology
For the electronic product that generally has two groups of zoom lens, projector for example, its zoom mirror cell has generally included a pre-group mirror cell and group mirror cell, a back, and pre-group mirror cell and back group mirror cell are mounted on respectively on the holder, and pre-group mirror cell and back group mirror cell are respectively with respect to the holder rotation and move axially and stretch out or withdraw, to reach the zoom function of pre-group mirror cell and group mirror cell, back.
Seeing also Fig. 1 is the use synoptic diagram of known zoom lens, wherein shows a projector 91, and group is provided with a zoom lens 92 in projector 91.Please consult simultaneously three-dimensional exploded view that Fig. 2 is known zoom lens, and Fig. 3 be the sectional view of known zoom lens.Aforesaid zoom lens 92 includes a pre-group mirror cell 93, a group mirror cell 94, back and a holder 95, and pre-group mirror cell 93 and back group mirror cell 94 are mounted on respectively on holder 95 axial two ends, and can be respectively stretch out or withdraw and reach zoom function to move axially with respect to holder 95 rotations.
Traditionally, between group mirror cell 94, above-mentioned back and the holder 95 is to utilize so-called groove mode to rotate, that is on holder 95, can offer three spiral grooves 951 in the equal angles mode, the corresponding position can convex with three screws 941 in back group mirror cell 94, and three screws 941 be slidedly arranged on respectively in three spiral grooves 951 the guiding slippages and respectively block make group mirror cell 94, back can move axially that stretch out or withdraw also can be in addition spacing thus in the end 950 of three spiral grooves 951 with respect to holder 95.
Yet, tradition is with the design of spiral grooves 951 with screw 941, stability when keeping back group mirror cell 94 rotation-slidings, must design three positions in the equal angles mode, keep group mirror cell 94, back when moving axially, its sagittal plane 942 can not tilt, and increases difficulty of processing in rain and raises the cost yet design three positions.In addition, the size of each spiral grooves 951, width, spiral radian equal all must be identical on the manufacturing accuracy, so not only its degree of difficulty is arranged in making, and the manufacturing precision of back group mirror cell 94 and effective Be Controlled or increase manufacturing cost in rain, non-very good in fact.
Summary of the invention
The objective of the invention is to, a kind of Zoom lens structure is provided, it can improve the stability and the precision of zoom lens.Manufacture is oversimplified also can be reduced the part number, and then can reduce cost.
A kind of Zoom lens structure of the present invention is characterized in that, comprising:
One stationary magazine creel, include an open front, an after-opening, a ring-side wall, a preceding stop section and stop section, a back, this ring-side wall is located between this open front and this after-opening, and this ring-side wall is provided with a preceding thread, reaches a back thread, should preceding thread be to be adjacent to this open front, this back thread be to be adjacent to this after-opening;
One pre-group mirror cell, stop part before the lens barrel and before including one, should be provided with a preceding thread by preceding lens barrel, this preceding thread correspondence is screwed together in the preceding thread of being somebody's turn to do of this stationary magazine creel, and making this pre-group mirror cell do axially-movable with respect to the open front of this stationary magazine creel, the corresponding block of this preceding stop part is in this preceding stop section of this stationary magazine creel; And
Group mirror cell, one back, include a back lens barrel and a back stop part, this back lens barrel is provided with a rear thread, this rear thread correspondence is screwed together in this back thread of this stationary magazine creel, and making group mirror cell, this back do axially-movable with respect to the after-opening of this stationary magazine creel, the corresponding block of this back stop part is in this stop section, back of this stationary magazine creel.
Wherein, this preceding stop section is to be a block flange, and this preceding stop part is to be a screw.
Wherein, this stop section, back is the end for a groove, and this back stop part is to be a screw.
Wherein, this preceding thread and this back thread are to be located at respectively on the inwall of this ring-side wall.
Wherein, this preceding thread is to be located on the outer wall of this preceding lens barrel.
Wherein, this rear thread is to be located on the outer wall of this back lens barrel.
Wherein, this preceding thread and this preceding thread are to be respectively a single line thread.
Wherein, this back thread and this rear thread are to be respectively a single line thread.
Description of drawings
For further specifying concrete technology contents of the present invention, below in conjunction with embodiment and accompanying drawing describes in detail as after, wherein:
Fig. 1 is the use synoptic diagram of known zoom lens.
Fig. 2 is the three-dimensional exploded view of known zoom lens.
Fig. 3 is the sectional view of known zoom lens.
Fig. 4 is the exploded view of a preferred embodiment of the present invention.
Fig. 5 is the sectional view of a preferred embodiment of the present invention.
Embodiment
Please consult simultaneously exploded view that Fig. 4 is a preferred embodiment of the present invention, and Fig. 5 be the sectional view of a preferred embodiment of the present invention, wherein show a Zoom lens structure, and it includes a stationary magazine creel 1, a pre-group mirror cell 2 and group mirror cell 3, a back.
In addition, lens barrel 21 before pre-group mirror cell 2 in graphic includes one, the outer wall of lens barrel 21 is provided with a preceding thread 22 (second screw thread) before this, in this example, it is meant that a male thread can corresponding engagement and be screwed together in the preceding thread 14 (first screw thread) of said fixing tube 1, and can make pre-group mirror cell 2 relatively rotate in the open front 11 of stationary magazine creel 1 and do axially-movable.
In addition, back group mirror cell 3 in graphic includes a back lens barrel 31, after this outer wall of lens barrel 31 is provided with a rear thread 32 (the 4th screw thread), in this example, it is meant that a male thread can corresponding engagement and be screwed together in the back thread 15 (the 3rd screw thread) of said fixing tube 1, and can make group mirror cell 3, back relatively rotate in the after-opening 12 of stationary magazine creel 1 and do axially-movable.
Therefore, pre-group mirror cell 2 and back group mirror cell 3 be can be by helical motion respectively the open front 11 with respect to stationary magazine creel 1 do axially-movable with after-opening 12, that is pre-group mirror cell 2 and back group mirror cell 3 can be respectively move axially with respect to stationary magazine creel 1 and stretch out or withdraw, so can reach the zoom function of pre-group mirror cell 2 and group mirror cell 3, back.
In addition, when pre-group mirror cell 2 during with respect to stationary magazine creel 1 helical motion, be the anglec of rotation of restriction pre-group mirror cell 2 and then restriction pre-group mirror cell 2 amount of movement with respect to stationary magazine creel 1, can make stationary magazine creel 1 include a preceding stop section 16,2 of pre-group mirror cells include stop part 23 before, and it is can be in the rotatablely moving of pre-group mirror cell 2, and corresponding block is in preceding stop section 16, so can limit the amount of movement of pre-group mirror cell 2, and can prevent that pre-group mirror cell 2 is from stationary magazine creel 1 disengagement with respect to stationary magazine creel 1.In present embodiment, aforesaid preceding stop section 16 is to be a block flange, and preceding stop part 23 is to be a screw; Or changing stop ring before the stationary magazine creel open front establishes, block flange before the pre-group mirror cell establishes is moved in preceding stop ring by preceding block flange in addition, the rotational angle of restriction pre-group mirror cell.
Same, when back group mirror cell 3 during with respect to stationary magazine creel 1 helical motion, be the anglec of rotation that limits back group mirror cell 3 and then group mirror cell 3, restriction back amount of movement with respect to stationary magazine creel 1, can make stationary magazine creel 1 include stop section 17, a back, 3 of mirror cells of back group include a back stop part 33, and it is can be in the rotatablely moving of back group mirror cell 3, and corresponding block is in stop section 17, back, so can limit the amount of movement of group mirror cell 3, back, and can prevent that group mirror cell 3, back is from stationary magazine creel 1 disengagement with respect to stationary magazine creel 1.In present embodiment, stop section 17, aforesaid back is the ends 171 for a groove, and back stop part 33 is to be a screw; Or change in the stationary magazine creel after-opening and establish a back stop ring, in addition establish a back block flange in back group mirror cell, in the stop ring of back, move the rotational angle of group mirror cell, restriction back by back block flange.
So by said structure, when back group mirror cell 3 during with respect to stationary magazine creel 1 helical motion, its sagittal plane 34 can't produce the problem of inclination, and its stability and precision thereof can be improved in back group mirror cell 3 therefore when helical motion.In present embodiment, the preceding thread 14 of stationary magazine creel 1 is fabricated to a single line thread respectively with the preceding thread 22 of pre-group mirror cell 2, and the back thread 15 of stationary magazine creel 1 also is fabricated to a single line thread respectively with the rear thread 32 of back group mirror cell 3, certainly, also can be fabricated to two-wire thread, three-way thread etc., when number is higher, can more increase the precision of helical motion.
In addition, stationary magazine creel 1, pre-group mirror cell 2 and back group mirror cell 3 only need produce (for example going out thread with the lathe car) thread and screw thread gets final product, do not need as tradition, to go again to design and calculate size, width, spiral radian of spiral grooves etc., so on manufacturing course, can oversimplify, and for manufacturing cost, also can significantly reduce.
In addition, during with respect to stationary magazine creel 1 helical motion, the Stop structure between it also only need design a place and get final product, so can reduce the part number, and can so reduce cost with back group mirror cell 3 pre-group mirror cell 2.
The preceding thread 14 of said fixing tube 1 can be fabricated to a dextrorotation thread respectively with the preceding thread 22 of pre-group mirror cell 2, certainly also can be fabricated to left-handed thread respectively, same, the back thread 15 of stationary magazine creel 1 can be fabricated to a dextrorotation thread respectively with the rear thread 32 of back group mirror cell 3, certainly also can be fabricated to left-handed thread respectively, no matter that is be dextrorotation thread or left-handed thread, thread 14 is fitted to each other with rear thread 32 and get final product with preceding thread 22, back thread 15 before only needing, and the needs of visual actual manufacturing and designing.
The foregoing description only is to give an example for convenience of description, and the interest field that the present invention advocated should be as the criterion so that claim is described certainly, but not only limits to the foregoing description.
Claims (8)
1. a Zoom lens structure is characterized in that, comprising:
One stationary magazine creel, include an open front, an after-opening, a ring-side wall, a preceding stop section and stop section, a back, this ring-side wall is located between this open front and this after-opening, and this ring-side wall is provided with a preceding thread, reaches a back thread, should preceding thread be to be adjacent to this open front, this back thread be to be adjacent to this after-opening;
One pre-group mirror cell, stop part before the lens barrel and before including one, should be provided with a preceding thread by preceding lens barrel, this preceding thread correspondence is screwed together in the preceding thread of being somebody's turn to do of this stationary magazine creel, and making this pre-group mirror cell do axially-movable with respect to the open front of this stationary magazine creel, the corresponding block of this preceding stop part is in this preceding stop section of this stationary magazine creel; And
Group mirror cell, one back, include a back lens barrel and a back stop part, this back lens barrel is provided with a rear thread, this rear thread correspondence is screwed together in this back thread of this stationary magazine creel, and making group mirror cell, this back do axially-movable with respect to the after-opening of this stationary magazine creel, the corresponding block of this back stop part is in this stop section, back of this stationary magazine creel.
2. Zoom lens structure as claimed in claim 1 is characterized in that, wherein, this preceding stop section is to be a block flange, and this preceding stop part is to be a screw.
3. Zoom lens structure as claimed in claim 1 is characterized in that, wherein, this stop section, back is the end for a groove, and this back stop part is to be a screw.
4. Zoom lens structure as claimed in claim 1 is characterized in that, wherein, this preceding thread and this back thread are to be located at respectively on the inwall of this ring-side wall.
5. Zoom lens structure as claimed in claim 1 is characterized in that, wherein, this preceding thread is to be located on the outer wall of this preceding lens barrel.
6. Zoom lens structure as claimed in claim 1 is characterized in that, wherein, this rear thread is to be located on the outer wall of this back lens barrel.
7. Zoom lens structure as claimed in claim 1 is characterized in that, wherein, this preceding thread and this preceding thread are to be respectively a single line thread.
8. Zoom lens structure as claimed in claim 1 is characterized in that, wherein, this back thread and this rear thread are to be respectively a single line thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510065965XA CN100368852C (en) | 2005-04-19 | 2005-04-19 | Zoom lens structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510065965XA CN100368852C (en) | 2005-04-19 | 2005-04-19 | Zoom lens structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1854789A CN1854789A (en) | 2006-11-01 |
| CN100368852C true CN100368852C (en) | 2008-02-13 |
Family
ID=37195079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510065965XA Expired - Fee Related CN100368852C (en) | 2005-04-19 | 2005-04-19 | Zoom lens structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100368852C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174012B (en) * | 2006-11-03 | 2010-08-11 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| CN101576645B (en) * | 2008-05-07 | 2011-07-27 | 陞泰科技股份有限公司 | Lens structure |
| CN101943785B (en) * | 2009-07-09 | 2012-03-14 | 凤凰光学(广东)有限公司 | Large-aperture zooming monitoring lens |
| TWI425268B (en) | 2011-01-14 | 2014-02-01 | Ability Entpr Co Ltd | Lens mechanism |
| CN107850748B (en) * | 2015-03-31 | 2020-09-01 | 国家光学研究所 | Optical assembly with translatably centered sleeve |
| CN105700273B (en) * | 2015-12-09 | 2018-05-29 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of ultrahigh speed sequence laser shadowgraph imaging Focalizing arrangement for camera |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2055261U (en) * | 1989-07-26 | 1990-03-28 | 品增源 | Special effects colour film enlarging and printing equipment |
| CN2283873Y (en) * | 1996-06-14 | 1998-06-10 | 五十周波股份有限公司 | Camera capable of adjusting focal distance |
| CN2341163Y (en) * | 1998-08-13 | 1999-09-29 | 业胜股份有限公司 | Improved lens for monitoring camera |
| JP2000010025A (en) * | 1998-06-22 | 2000-01-14 | Minolta Co Ltd | Telescopic optical device |
| JP2004294625A (en) * | 2003-03-26 | 2004-10-21 | Fuji Photo Optical Co Ltd | Zoom lens barrel |
-
2005
- 2005-04-19 CN CNB200510065965XA patent/CN100368852C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2055261U (en) * | 1989-07-26 | 1990-03-28 | 品增源 | Special effects colour film enlarging and printing equipment |
| CN2283873Y (en) * | 1996-06-14 | 1998-06-10 | 五十周波股份有限公司 | Camera capable of adjusting focal distance |
| JP2000010025A (en) * | 1998-06-22 | 2000-01-14 | Minolta Co Ltd | Telescopic optical device |
| CN2341163Y (en) * | 1998-08-13 | 1999-09-29 | 业胜股份有限公司 | Improved lens for monitoring camera |
| JP2004294625A (en) * | 2003-03-26 | 2004-10-21 | Fuji Photo Optical Co Ltd | Zoom lens barrel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1854789A (en) | 2006-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100368852C (en) | Zoom lens structure | |
| US5245476A (en) | Zoom lens barrel | |
| CN101233451B (en) | Lens-barrel and camera having the same | |
| KR20060050442A (en) | Assembly-stage focus adjustment mechanism of a zoom lens | |
| JPS60153015A (en) | Zoom lens barrel | |
| US10054760B2 (en) | Zoom lens barrel and optical apparatus using the same | |
| CN103823295B (en) | Power zoom zoom day and night pick-up lens | |
| US7009781B2 (en) | Zoom lens mechanism partly foldable and retractable | |
| CN105739045A (en) | Lens barrel and lens seat combination structure | |
| EP1229372A2 (en) | Zoom lens assembly with focus adjustment mechanism | |
| CN204287593U (en) | High resolving power manual zoom pick-up lens | |
| US6753911B1 (en) | Zooming lens barrel and a camera in use therewith | |
| JP4433855B2 (en) | Lens device and adjustment method thereof | |
| JP6293510B2 (en) | Zoom lens barrel | |
| US20150268443A1 (en) | Optical Device | |
| JP5883260B2 (en) | Lens barrel and imaging device | |
| US7321471B2 (en) | Lens barrel and lens system | |
| TWI771884B (en) | Monocular telescope and adjustable optical mechanism | |
| US20010019456A1 (en) | Zoom lens barrel and camera | |
| CN219328931U (en) | Lens group and lens | |
| CN218158708U (en) | Focusing ring for focusing lens and focusing lens | |
| JP5287714B2 (en) | Lens barrel and camera | |
| JPS6138446B2 (en) | ||
| JP3766573B2 (en) | Lens moving device | |
| JPH02248909A (en) | Zoom lens barrel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XINTHAI OPTICAL (SHENZHEN) CO., LTD. Free format text: FORMER OWNER: ASIA OPTICAL CO., LTD. Effective date: 20090619 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090619 Address after: First, second, third industrial parks, Li Songlang Industrial Zone, Gongming Town, Shenzhen, Baoan District Patentee after: Xintai optics (Shenzhen) Co., Ltd. Address before: Taichung County of Taiwan Province Patentee before: Asia Optics Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080213 Termination date: 20160419 |