TWI436094B - Zoom lens - Google Patents
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- TWI436094B TWI436094B TW099145813A TW99145813A TWI436094B TW I436094 B TWI436094 B TW I436094B TW 099145813 A TW099145813 A TW 099145813A TW 99145813 A TW99145813 A TW 99145813A TW I436094 B TWI436094 B TW I436094B
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Description
本發明係與鏡頭有關，特別是指一種變焦鏡頭。The present invention relates to a lens, and more particularly to a zoom lens.
數位影像技術的發展日新月異，除了追求影像以高像素成像，輸出以高解析度品質呈現之外，搭配數位影像的電子裝置也必須具備較快的操作速度與較小的體積等技術特點。例如數位相機或是投影機等設備，為了能便於操作者使用於各種不同的環境，常常就必須做到能讓體積達到最小化，而性能最大化的設計。The development of digital imaging technology is changing with each passing day. In addition to pursuing images with high pixel imaging and output with high resolution quality, electronic devices with digital images must also have fast operating speed and small volume. For example, a digital camera or a projector, in order to facilitate the use of the operator in a variety of different environments, it is often necessary to achieve a design that minimizes volume and maximizes performance.
現有數位相機或是投影機等設備的鏡頭，通常都具有可調整焦距之功能，如第五及第六圖所示，習用的鏡頭通常具有設於固定座70內之一前群鏡室72與一後群鏡室74，二鏡室72、74利用一設於固定座70旋轉之帶動輪76驅動，即可於固定座70內同時旋轉且前後位移，改變二鏡室72、74間的距離，進而達成調整成像焦距之目的。A lens of a device such as a digital camera or a projector usually has a function of adjusting a focal length. As shown in the fifth and sixth figures, a conventional lens usually has a front group mirror chamber 72 provided in the fixing base 70. A rear group mirror chamber 74, the two mirror chambers 72, 74 are driven by a driving wheel 76 which is arranged to rotate on the fixing base 70, and can be simultaneously rotated in the fixing base 70 and displaced forward and backward to change the distance between the two mirror chambers 72 and 74. In order to achieve the purpose of adjusting the imaging focal length.
然而，隨著數位影像設備的體積越做越小，鏡頭也必須跟著越來越小，使得鏡頭的組裝過程中，各鏡室在固定座內比較無法保持穩定的位置，容易產生傾斜現象，增加了組裝上的困擾。However, as the volume of the digital imaging device becomes smaller and smaller, the lens must be smaller and smaller, so that during the assembly of the lens, the mirror chambers are less able to maintain a stable position in the fixed seat, which is prone to tilting and increase. The troubles in assembly.
因此，本發明之主要目的在於提供一種變焦鏡頭，其整體結構於作動時可較為穩固。Accordingly, it is a primary object of the present invention to provide a zoom lens whose overall structure is relatively stable when actuated.
為了達成上述目的，本發明之變焦鏡頭，包含有一固定座、一帶動輪，以及至少二鏡室；該固定座具有沿一光軸延伸之容置孔；該帶動輪係以該光軸為軸心且可轉動地設於該固定座；該等鏡室係以沿該光軸移動地設於該固定座之容置孔內，至少一該鏡室與該帶動輪相互連結；藉此，當該帶動輪相對於該固定座轉動時，即可驅使各該鏡室於該固定座內相對靠近或遠離。In order to achieve the above object, the zoom lens of the present invention comprises a fixing base, a driving wheel, and at least two mirror chambers; the fixing base has a receiving hole extending along an optical axis; the driving wheel system is oriented on the optical axis The oscillating chamber is rotatably disposed in the accommodating seat; the mirror chamber is disposed in the accommodating hole of the fixing base along the optical axis, and at least one of the mirror chamber and the driving wheel are coupled to each other; When the driving wheel rotates relative to the fixing seat, each of the mirror chambers can be driven relatively close to or away from the fixing seat.
本發明之各該鏡室更可具有一鏡筒，該等鏡筒係以該光軸同軸地設於該固定座之容置孔，相鄰二該鏡筒之其中之一具有一嵌合部，另一該鏡筒具有一嵌槽，該二相鄰之鏡筒於該固定座內相互靠近時，該嵌合部可嵌入該嵌槽，而當該二相鄰之鏡筒相互遠離時，該嵌合部則移出該嵌槽。Each of the mirror chambers of the present invention may further have a lens barrel, wherein the optical tube is coaxially disposed on the receiving hole of the fixing base, and one of the adjacent two of the lens barrels has a fitting portion. The other lens barrel has a recessed groove. When the two adjacent lens barrels are close to each other in the fixing seat, the fitting portion can be embedded in the insertion groove, and when the two adjacent lens barrels are away from each other, The fitting portion is then removed from the recess.
本發明之其中一該鏡筒之端面設置一環垣，該環垣之外周具有至少二向外凸伸之延伸部，該二延伸部間形成出該嵌槽。One end of the lens barrel of the present invention is provided with a ring, and the outer circumference of the ring has at least two outwardly extending extension portions, and the insertion grooves are formed between the two extension portions.
藉由本發明之第一鏡室與第二鏡室之間係以各嵌合部直接靠抵於各嵌槽及環垣，二者相互嵌合可增加結構作動時之穩定性。By the first mirror chamber and the second mirror chamber of the present invention, the fitting portions directly abut against the respective fitting grooves and the loops, and the two are fitted to each other to increase the stability during the operation of the structure.
為了詳細說明本發明之結構、特徵及功效所在，茲列舉一較佳實施例並配合圖式說明如後，其中：In order to explain the structure, features and advantages of the present invention in detail, a preferred embodiment is illustrated in the accompanying drawings.
第一圖為本發明一較佳實施例之立體分解圖。The first figure is an exploded perspective view of a preferred embodiment of the present invention.
第二圖為本發明一較佳實施例之部份剖視圖，其中第一鏡室與第二鏡室之間係呈相互遠離狀態。The second figure is a partial cross-sectional view of a preferred embodiment of the present invention in which the first mirror chamber and the second mirror chamber are in a mutually distant state.
第三圖為本發明一較佳實施例之立體部分分解圖，其中第一鏡室之嵌合部嵌入第二鏡室之嵌槽。The third figure is an exploded perspective view of a preferred embodiment of the present invention, wherein the fitting portion of the first mirror chamber is embedded in the recess of the second mirror chamber.
第四圖為本發明一較佳實施例之部份剖視圖，其中第一鏡室之嵌合部嵌入第二鏡室之嵌槽。The fourth figure is a partial cross-sectional view of a preferred embodiment of the invention in which the fitting portion of the first mirror chamber is embedded in the recess of the second mirror chamber.
請參閱第一圖及第二圖，本發明一較佳實施例所提供之變焦鏡頭10，包含有一固定座20、一帶動輪30、一第一鏡室40，以及一第二鏡室50，本變焦鏡頭10可適用於攝像設備或是投影裝置。Referring to the first and second figures, a zoom lens 10 according to a preferred embodiment of the present invention includes a fixing base 20, a driving wheel 30, a first mirror chamber 40, and a second mirror chamber 50. The zoom lens 10 can be applied to an image pickup apparatus or a projection apparatus.
該固定座20具有呈環狀之一第一周壁22與一第二周壁24，第一周壁22及第二周壁24中央形成出一沿光軸18延伸之容置孔26。第一周壁22之壁面穿設若干第一導槽28，各第一導槽28係與光軸18平行地延伸。The fixing base 20 has a first peripheral wall 22 and a second peripheral wall 24 in an annular shape. The central portion of the first peripheral wall 22 and the second peripheral wall 24 form a receiving hole 26 extending along the optical axis 18. The wall of the first peripheral wall 22 is provided with a plurality of first guiding grooves 28, and each of the first guiding grooves 28 extends parallel to the optical axis 18.
該帶動輪30亦呈環狀，帶動輪30之壁面具有若干第二導槽32，各第二導槽32以具有預定斜度地傾斜延伸於帶動輪30。帶動輪30係以光軸18為軸心套設於固定座20之第一周壁22，各第二導槽32位置對應於各第一導槽28位置，帶動輪30可相對於固定座20轉動。The driving wheel 30 is also annular, and the wall surface of the driving wheel 30 has a plurality of second guiding grooves 32, and each of the second guiding grooves 32 extends obliquely to the driving wheel 30 with a predetermined inclination. The driving wheel 30 is sleeved on the first peripheral wall 22 of the fixing base 20 with the optical axis 18 as an axis. The positions of the second guiding slots 32 correspond to the positions of the first guiding slots 28, and the driving wheel 30 can be opposite to the fixing base 20 Turn.
該第一鏡室40與該第二鏡室50可設計為前群鏡室與後群鏡室，第一鏡室40具有一第一鏡筒42，第一鏡筒42之後端面設置一環垣44，環垣44之外周具有三弧狀延伸部46，三延伸部46係等角排列於第一鏡筒42之後端面，且自後端面向外凸伸，藉由相鄰之延伸部46間形成出三嵌 槽48。第二鏡室50亦具有一第二鏡筒52，第二鏡筒52之前端面等角設置三向外延伸之嵌合部54。The first mirror chamber 40 and the second mirror chamber 50 can be designed as a front group mirror chamber and a rear group mirror chamber. The first mirror chamber 40 has a first lens barrel 42. The first lens barrel 42 is provided with a ring 44 on the rear end surface. The outer circumference of the ring 44 has three arc-shaped extending portions 46. The three extending portions 46 are equiangularly arranged on the rear end surface of the first barrel 42 and protrude outward from the rear end surface, and are formed by the adjacent extending portions 46. Triple inlay Slot 48. The second mirror chamber 50 also has a second lens barrel 52. The second lens barrel 52 is provided with three outwardly extending fitting portions 54 at the front end corners.
第一鏡室40與第二鏡室50係以同軸於光軸18地鄰設於固定座20之容置孔26內，第一鏡室40位於第一周壁22內側，第二鏡室50位於第二周壁24內側，第一鏡室40與第二鏡室50藉由若干連結件(圖中未示)穿經帶動輪30之各第二導槽32與固定座20之各第一導槽28，進而固定於各嵌合部54與延伸部46，使第一鏡室40及第二鏡室50皆連結於帶動輪30，使帶動輪30可帶動第一及第二鏡室40、50於固定座20內移動。The first mirror chamber 40 and the second mirror chamber 50 are disposed adjacent to the optical axis 18 in the receiving hole 26 of the fixing base 20, and the first mirror chamber 40 is located inside the first peripheral wall 22, and the second mirror chamber 50 is disposed. Located on the inner side of the second peripheral wall 24, the first mirror chamber 40 and the second mirror chamber 50 pass through the first guides 32 of the second guide groove 32 and the fixed seat 20 of the driven wheel 30 by a plurality of connecting members (not shown). The groove 28 is further fixed to each of the fitting portion 54 and the extending portion 46, so that the first mirror chamber 40 and the second mirror chamber 50 are coupled to the driving wheel 30, so that the driving wheel 30 can drive the first and second mirror chambers 40, 50 moves within the mount 20.
透過上述本發明之組成構件，如第二至第四圖所示，當帶動輪30相對於固定座20原地旋轉時，利用朝斜向延伸之第二導槽32，即可帶動連結件沿著第二導槽32位移，進而驅使第一鏡室40與第二鏡室50於固定座20內移動且不轉動地相對靠近或遠離。如第三及第四圖所示，當第一及第二鏡室40、50相互靠近時，第二鏡筒52之嵌合部54係伸入第一鏡筒42之嵌槽48內，直至嵌合部54接觸於環垣44，使第一鏡室40與第二鏡室50之間相互抵接而嵌合。而當第一及第二鏡室40、50相互遠離時，第二鏡筒52之嵌合部54亦可沿著嵌槽48移離第一鏡筒42。Through the above-mentioned constituent members of the present invention, as shown in the second to fourth figures, when the driving wheel 30 is rotated in situ with respect to the fixed seat 20, the second guiding groove 32 extending obliquely can be used to drive the connecting member along the edge. The second guide groove 32 is displaced, thereby driving the first mirror chamber 40 and the second mirror chamber 50 to move in the fixed seat 20 and relatively close to or away from each other without rotation. As shown in the third and fourth figures, when the first and second mirror chambers 40, 50 are close to each other, the fitting portion 54 of the second barrel 52 projects into the recess 48 of the first barrel 42 until The fitting portion 54 is in contact with the ring 44, and the first mirror chamber 40 and the second mirror chamber 50 are brought into contact with each other to be fitted. When the first and second mirror chambers 40, 50 are away from each other, the fitting portion 54 of the second barrel 52 can also move away from the first barrel 42 along the recess 48.
藉由此方式，本發明之第一鏡室40與第二鏡室50之間係以各嵌合部54直接靠抵於各嵌槽48及環垣44，二者較為緊密地相互嵌合，增加結構作動時之穩定性。In this way, between the first mirror chamber 40 and the second mirror chamber 50 of the present invention, the fitting portions 54 directly abut against the respective recesses 48 and the loops 44, and the two are closely fitted to each other. Increase the stability of the structure when it is activated.
本發明除了如前述較佳實施例應用於二組鏡室之變焦鏡頭之外，可另外應用於具有二組以上鏡室之鏡頭。而嵌合部與嵌槽之設計亦可為直線或是螺旋狀，結構型態也可互換，只要設計在二鏡室的相鄰接處。The present invention can be additionally applied to a lens having two or more mirror chambers, in addition to the zoom lens applied to the two mirror chambers as in the foregoing preferred embodiment. The design of the fitting portion and the groove can also be straight or spiral, and the structural patterns are also interchangeable as long as they are designed adjacent to the two mirror chambers.
本發明於前揭實施例中所揭露的構成元件，僅為舉例說明，並非用來限制本案之範圍，其他等效元件的替代或變化，亦應為本案之申請專利範圍所涵蓋。The constituent elements of the present invention disclosed in the foregoing embodiments are merely illustrative and are not intended to limit the scope of the present invention. The alternative or variations of other equivalent elements are also covered by the scope of the patent application.
10．．．變焦鏡頭10. . . Zoom lens
18．．．光軸18. . . Optical axis
20．．．固定座20. . . Fixed seat
22．．．第一周壁twenty two. . . First week wall
24．．．第二周壁twenty four. . . Second week wall
26．．．容置孔26. . . Socket hole
28．．．第一導槽28. . . First channel
30．．．帶動輪30. . . Driving wheel
32．．．第二導槽32. . . Second guide slot
40．．．第一鏡室40. . . First mirror room
42．．．第一鏡筒42. . . First barrel
44．．．環垣44. . . Ring
46．．．延伸部46. . . Extension
48．．．嵌槽48. . . Insert slot
50．．．第二鏡室50. . . Second mirror room
52．．．第二鏡筒52. . . Second barrel
54．．．嵌合部54. . . Mating part
第一圖為本發明一較佳實施例之立體分解圖。The first figure is an exploded perspective view of a preferred embodiment of the present invention.
第二圖為本發明一較佳實施例之部份剖視圖，其中第一鏡室與第二鏡室之間係呈相互遠離狀態。The second figure is a partial cross-sectional view of a preferred embodiment of the present invention in which the first mirror chamber and the second mirror chamber are in a mutually distant state.
第三圖為本發明一較佳實施例之立體部分分解圖，其中第一鏡室之嵌合部嵌入第二鏡室之嵌槽。The third figure is an exploded perspective view of a preferred embodiment of the present invention, wherein the fitting portion of the first mirror chamber is embedded in the recess of the second mirror chamber.
第四圖為本發明一較佳實施例之部份剖視圖，其中第一鏡室之嵌合部嵌入第二鏡室之嵌槽。The fourth figure is a partial cross-sectional view of a preferred embodiment of the invention in which the fitting portion of the first mirror chamber is embedded in the recess of the second mirror chamber.
第五圖為習用變焦鏡頭之剖視圖。The fifth figure is a cross-sectional view of a conventional zoom lens.
第六圖類同於第五圖，主要顯示習用變焦鏡頭之鏡室相互靠近之狀態。The sixth figure is similar to the fifth figure, and mainly shows the state in which the mirror chambers of the conventional zoom lens are close to each other.
10．．．變焦鏡頭10. . . Zoom lens
18．．．光軸18. . . Optical axis
20．．．固定座20. . . Fixed seat
22．．．第一周壁twenty two. . . First week wall
24．．．第二周壁twenty four. . . Second week wall
26．．．容置孔26. . . Socket hole
28．．．第一導槽28. . . First channel
30．．．帶動輪30. . . Driving wheel
32．．．第二導槽32. . . Second guide slot
40．．．第一鏡室40. . . First mirror room
42．．．第一鏡筒42. . . First barrel
44．．．環垣44. . . Ring
46．．．延伸部46. . . Extension
48．．．嵌槽48. . . Insert slot
50．．．第二鏡室50. . . Second mirror room
52．．．第二鏡筒52. . . Second barrel
54．．．嵌合部54. . . Mating part
Claims (2)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW099145813A TWI436094B (en) | 2010-12-24 | 2010-12-24 | Zoom lens |
| CN201110093942.5A CN102540395B (en) | 2010-12-24 | 2011-04-14 | Zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW099145813A TWI436094B (en) | 2010-12-24 | 2010-12-24 | Zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201226965A TW201226965A (en) | 2012-07-01 |
| TWI436094B true TWI436094B (en) | 2014-05-01 |
Family
ID=46347683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW099145813A TWI436094B (en) | 2010-12-24 | 2010-12-24 | Zoom lens |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102540395B (en) |
| TW (1) | TWI436094B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362382C (en) * | 2002-06-05 | 2008-01-16 | 诺基亚有限公司 | Digital camera system with piezoelectric actuators |
| JP2004085932A (en) * | 2002-08-27 | 2004-03-18 | Pentax Corp | Feed-out cam mechanism for zoom lens barrel and feed-out cam mechanism |
| JP2004085934A (en) * | 2002-08-27 | 2004-03-18 | Pentax Corp | Extending cam mechanism for zoom lens barrel and extending cam mechanism |
-
2010
- 2010-12-24 TW TW099145813A patent/TWI436094B/en not_active IP Right Cessation
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2011
- 2011-04-14 CN CN201110093942.5A patent/CN102540395B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| TW201226965A (en) | 2012-07-01 |
| CN102540395B (en) | 2015-04-22 |
| CN102540395A (en) | 2012-07-04 |
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