TWI490589B - Zoom lens - Google Patents
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- TWI490589B TWI490589B TW097133310A TW97133310A TWI490589B TW I490589 B TWI490589 B TW I490589B TW 097133310 A TW097133310 A TW 097133310A TW 97133310 A TW97133310 A TW 97133310A TW I490589 B TWI490589 B TW I490589B
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Description
本發明係關於一種鏡頭總成，特別是一種用於微型電子裝置之鏡頭總成。The present invention relates to a lens assembly, and more particularly to a lens assembly for a miniature electronic device.
由於科技之進步，具有照相功能之手機日漸普及且深受消費者喜愛。為了達到照相功能，手機內部必須附加一微型相機系統。目前應用於該微型相機系統之鏡頭總成通常僅能達到二倍變焦，而且其使用之透鏡數目較多，因此，此種鏡頭之設計難度很高。Due to advances in technology, mobile phones with camera functions are becoming more popular and popular among consumers. In order to achieve the camera function, a miniature camera system must be attached to the inside of the phone. Currently, the lens assembly applied to the miniature camera system can only achieve double zoom, and the number of lenses used therein is large, so the design of such a lens is very difficult.
另外，習知應用於微型電子裝置(例如該微型相機系統)之鏡頭總成之缺點為，在變焦時需要伸長或縮短該鏡頭總成，亦即該鏡頭總成並無法固定在一個長度。再者，該習知之鏡頭總成之體積無法有效縮小，這對講求輕薄短小的微型電子裝置而言，是一項重大的困擾。In addition, a conventional lens assembly applied to a microelectronic device (for example, the micro camera system) has the disadvantage that it is required to extend or shorten the lens assembly during zooming, that is, the lens assembly cannot be fixed at a length. Moreover, the volume of the conventional lens assembly cannot be effectively reduced, which is a major problem for a microelectronic device that is thin and short.
因此，有必要提供一創新且富進步性的鏡頭總成，以解決上述問題。Therefore, it is necessary to provide an innovative and progressive lens assembly to solve the above problems.
本發明係提供一種鏡頭總成，其依序包括一對焦鏡組、一變焦鏡組及一補償鏡組。該對焦鏡組係為固定不動，且其包括一第一透鏡。該變焦鏡組係可移動，其依序包括一第二透鏡、一第三透鏡、一第四透鏡及一第五透鏡，且該第二透鏡、該第三透鏡、該第四透鏡及該第五透鏡間之距 離係為固定。該補償鏡組係為固定不動，且其依序包括一第六透鏡及一第七透鏡。The invention provides a lens assembly, which in sequence comprises a focusing lens group, a zoom lens group and a compensation mirror group. The focusing lens assembly is stationary and includes a first lens. The zoom lens assembly is movable, and includes a second lens, a third lens, a fourth lens, and a fifth lens, and the second lens, the third lens, the fourth lens, and the second Distance between five lenses The line is fixed. The compensating mirror group is fixed and includes a sixth lens and a seventh lens in sequence.
在本發明中，該鏡頭總成可固定在總長度20mm內，同時該變焦鏡組移動方式可使該鏡頭總成在總長度固定的情況下達到三倍之光學變焦。再者，該鏡頭總成之體積與先前技術相比可縮小許多。最後，該鏡頭總成之透鏡數目較少，而可達到較佳組裝公差之效果。In the present invention, the lens assembly can be fixed within a total length of 20 mm, and the zoom lens assembly can be moved in such a manner that the lens assembly achieves three times the optical zoom with a fixed total length. Moreover, the volume of the lens assembly can be much reduced compared to the prior art. Finally, the lens assembly has a smaller number of lenses and achieves better assembly tolerances.
參考圖1，顯示本發明鏡頭總成之較佳實施例之示意圖。本發明之鏡頭總成1可應用於微型電子裝置，例如應用於手機之微型相機系統。該鏡頭總成1依順序包括一對焦鏡組10、一變焦鏡組20及一補償鏡組40。在本文之定義中，圖1之左側係為物端，圖1之右側係為像端，成像面50係位於圖中右側。Referring to Figure 1, a schematic diagram of a preferred embodiment of a lens assembly of the present invention is shown. The lens assembly 1 of the present invention can be applied to a microelectronic device such as a miniature camera system applied to a mobile phone. The lens assembly 1 includes a focusing lens group 10, a zoom lens group 20 and a compensation mirror group 40 in sequence. In the definition herein, the left side of Figure 1 is the object end, the right side of Figure 1 is the image end, and the imaging surface 50 is located on the right side of the figure.
該對焦鏡組10係為固定不動，且其包括一第一透鏡11。該第一透鏡11係為彎月型負透鏡，其曲率半徑較大之面朝向物端。The focusing lens set 10 is stationary and includes a first lens 11. The first lens 11 is a meniscus type negative lens, and a surface having a larger radius of curvature faces the object end.
該變焦鏡組20係可移動，其依序包括一第二透鏡21、一第三透鏡22、一第四透鏡23及一第五透鏡24。該第二透鏡21係為半月型正透鏡，其曲率半徑較大之面朝向像端。該第三透鏡22係為彎月型正透鏡，其曲率半徑較大之面朝向像端。該第四透鏡23係為彎月型正透鏡，其曲率半徑較大之面朝向像端。該第五透鏡24係為雙凹透鏡。該第二透鏡 21、該第三透鏡22、該第四透鏡23及該第五透鏡24間之距離係為固定，且該變焦鏡組20係整組一起移動。The zoom lens set 20 is movable, and includes a second lens 21, a third lens 22, a fourth lens 23 and a fifth lens 24 in sequence. The second lens 21 is a half moon type positive lens, and a surface having a larger radius of curvature faces the image end. The third lens 22 is a meniscus type positive lens, and a surface having a larger radius of curvature faces the image end. The fourth lens 23 is a meniscus type positive lens, and a surface having a larger radius of curvature faces the image end. The fifth lens 24 is a biconcave lens. The second lens 21. The distance between the third lens 22, the fourth lens 23, and the fifth lens 24 is fixed, and the zoom lens group 20 moves together.
該補償鏡組40係為固定不動，且其依序包括一第六透鏡41及一第七透鏡42。該第六透鏡41係為雙凸透鏡。該第七透鏡42係為彎月型負透鏡，其曲率半徑較大之面朝向物端。The compensation lens group 40 is fixed and includes a sixth lens 41 and a seventh lens 42 in sequence. The sixth lens 41 is a lenticular lens. The seventh lens 42 is a meniscus type negative lens having a surface having a large radius of curvature facing the object end.
在本實施例中，該第一透鏡11、該第二透鏡21、該第三透鏡22、該第四透鏡23、該第五透鏡24、該第六透鏡41及該第七透鏡42均為非球面鏡片。In this embodiment, the first lens 11, the second lens 21, the third lens 22, the fourth lens 23, the fifth lens 24, the sixth lens 41, and the seventh lens 42 are all non- Spherical lens.
在本發明中，該鏡頭總成1可固定在總長度20mm內，同時該變焦鏡組20移動方式可使該鏡頭總成1在總長度固定的情況下達到三倍之光學變焦。再者，該鏡頭總成1之體積與先前技術相比可縮小許多。最後，該鏡頭總成1之透鏡數目較少，而可達到較佳組裝公差之效果。In the present invention, the lens assembly 1 can be fixed within a total length of 20 mm, and the zoom lens assembly 20 can be moved in such a manner that the lens assembly 1 achieves three times the optical zoom with a fixed total length. Moreover, the volume of the lens assembly 1 can be reduced much compared to the prior art. Finally, the lens assembly 1 has a smaller number of lenses and achieves better assembly tolerances.
上述實施例僅為說明本發明之原理及其功效，並非限制本發明，因此習於此技術之人士對上述實施例進行修改及變化仍不脫本發明之精神。本發明之權利範圍應如後述之申請專利範圍所列。The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the scope of the present invention. The scope of the invention should be as set forth in the appended claims.
1‧‧‧本發明之鏡頭總成1‧‧‧ lens assembly of the invention
10‧‧‧對焦鏡組10‧‧‧ Focusing lens group
11‧‧‧第一透鏡11‧‧‧First lens
20‧‧‧變焦鏡組20‧‧‧ zoom lens set
21‧‧‧第二透鏡21‧‧‧second lens
22‧‧‧第三透鏡22‧‧‧ third lens
23‧‧‧第四透鏡23‧‧‧Fourth lens
24‧‧‧第五透鏡24‧‧‧ fifth lens
40‧‧‧補償鏡組40‧‧‧Compensation mirror
41‧‧‧第六透鏡41‧‧‧ sixth lens
42‧‧‧第七透鏡42‧‧‧ seventh lens
50‧‧‧成像面50‧‧‧ imaging surface
圖1顯示本發明鏡頭總成之較佳實施例之示意圖。BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a preferred embodiment of a lens assembly of the present invention.
1‧‧‧本發明之鏡頭總成1‧‧‧ lens assembly of the invention
10‧‧‧對焦鏡組10‧‧‧ Focusing lens group
11‧‧‧第一透鏡11‧‧‧First lens
20‧‧‧變焦鏡組20‧‧‧ zoom lens set
21‧‧‧第二透鏡21‧‧‧second lens
22‧‧‧第三透鏡22‧‧‧ third lens
23‧‧‧第四透鏡23‧‧‧Fourth lens
24‧‧‧第五透鏡24‧‧‧ fifth lens
40‧‧‧補償鏡組40‧‧‧Compensation mirror
41‧‧‧第六透鏡41‧‧‧ sixth lens
42‧‧‧第七透鏡42‧‧‧ seventh lens
50‧‧‧成像面50‧‧‧ imaging surface
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW097133310A TWI490589B (en) | 2008-08-29 | 2008-08-29 | Zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW097133310A TWI490589B (en) | 2008-08-29 | 2008-08-29 | Zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201009417A TW201009417A (en) | 2010-03-01 |
| TWI490589B true TWI490589B (en) | 2015-07-01 |
Family
ID=44827811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW097133310A TWI490589B (en) | 2008-08-29 | 2008-08-29 | Zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI490589B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070263295A1 (en) * | 2006-05-10 | 2007-11-15 | Pentax Corporation | Zoom lens system |
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2008
- 2008-08-29 TW TW097133310A patent/TWI490589B/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070263295A1 (en) * | 2006-05-10 | 2007-11-15 | Pentax Corporation | Zoom lens system |
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| Publication number | Publication date |
|---|---|
| TW201009417A (en) | 2010-03-01 |
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