TWI444653B - Zoom lens - Google Patents
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Description
本發明係關於一種鏡頭總成，特別是一種用於投影系統之鏡頭總成。The present invention relates to a lens assembly, and more particularly to a lens assembly for a projection system.
目前之數位光源處理式(DLP,Digital Light Processing)投影系統之非遠心(non-telecentric)架構，雖然其具有光量較為充足之優點，但是其缺點在於其光學鏡頭之出瞳(exit pupil)必須維持一恆定位置，並且以恆定值為佳，因此對於此種鏡頭其設計難度大幅提高。The current non-telecentric architecture of the DLP (Digital Light Processing) projection system, although having the advantage of sufficient light quantity, has the disadvantage that the exit pupil of the optical lens must be maintained. A constant position, and a constant value, so the design difficulty for such a lens is greatly improved.
另外，習知之數位光源處理式投影系統所使用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投影系統而言，是一項重大的困擾。In addition, the lens assembly used in the conventional digital light source processing type projection system has the disadvantage that the lens assembly needs to be elongated or shortened during zooming, that is, the lens assembly cannot be fixed at one length. Moreover, the volume of the conventional lens assembly cannot be effectively reduced, which is a major problem for a thin and short projection system.
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.
本發明之主要目的係提供一種鏡頭總成，其至少包括：一對焦鏡組、一校正鏡組、一固定鏡組及一變焦鏡組。該校正鏡組係可移動，以達校正之功能。該固定鏡組係為固定不動。該變焦鏡組係可移動，以達校正之功能。本發明之特徵在於該對焦鏡組包括一第一透鏡、一第二透鏡及一第三透鏡，其中該第一透鏡、該第二透鏡及該第三透鏡均為負透鏡。藉此，使得該鏡頭總成可固定在一總長度內，且光柵位置不動的情況下達到1.6倍至2.0倍之光學變焦之遠心結構。此外，由廣角至望遠時該鏡頭總成能有效減低雜散光且大幅提昇進光量。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。The main object of the present invention is to provide a lens assembly that includes at least: a focusing lens group, a correcting mirror group, a fixed mirror group, and a zoom lens group. The calibrated mirror set is movable for corrective function. The fixed mirror is fixed. The zoom lens set is movable for corrective function. The present invention is characterized in that the focusing lens assembly comprises a first lens, a second lens and a third lens, wherein the first lens, the second lens and the third lens are both negative lenses. Thereby, the lens assembly can be fixed within a total length, and the telecentric structure of the optical zoom of 1.6 times to 2.0 times is achieved without the position of the grating. In addition, the lens assembly can effectively reduce stray light and greatly increase the amount of light entering from wide angle to telephoto. 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第一實施例之示意圖。本發明之鏡頭總成1可應用於投影系統，較佳地，可應用於數位光源處理式(DLP)投影系統。該鏡頭總成1依順序包括一對焦鏡組10A、一第一校正鏡組20A、一第一固定鏡組30A、一變焦鏡組40A、一光柵81及一後群鏡組80A。其中該對焦鏡組10A係為負光焦度，第一校正鏡組20A係為正光焦度，該第一固定鏡組30A係為負光焦度，該變焦鏡組40A係為正光焦度。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。Referring to Figure 1, there is shown a schematic view of a first embodiment of a lens assembly of the present invention. The lens assembly 1 of the present invention is applicable to a projection system, and is preferably applicable to a digital light source processing (DLP) projection system. The lens assembly 1 includes a focusing lens group 10A, a first correcting mirror group 20A, a first fixed mirror group 30A, a zoom lens group 40A, a grating 81, and a rear group mirror group 80A. The focus lens group 10A is a negative power, the first correction lens group 20A is a positive power, the first fixed lens group 30A is a negative power, and the zoom lens group 40A is a positive power. In the definition of this document, the left side of Figure 1 is the object end, and the right side of Figure 1 is the image end.
該對焦鏡組10A包括一第一透鏡11、一第二透鏡12及一第三透鏡13。該第一透鏡11、該第二透鏡12及該第三透鏡13均為負透鏡，其具有負光焦度。在本實施例中，該第一透鏡11及該第二透鏡12均為彎月型負透鏡，其曲率半徑較大之面均朝向物端。該第三透鏡13係由一正透鏡131及一負透鏡132所膠合而成，其中該正透鏡131係為一平凸透鏡，其凸面朝向物端；該負透鏡132係為一平凹透鏡，其凹面朝向像端。The focusing lens assembly 10A includes a first lens 11, a second lens 12 and a third lens 13. The first lens 11, the second lens 12, and the third lens 13 are each a negative lens having a negative refractive power. In this embodiment, the first lens 11 and the second lens 12 are both meniscus type negative lenses, and the faces having the larger radius of curvature face the object ends. The third lens 13 is made of a positive lens 131 and a negative lens 132. The positive lens 131 is a plano-convex lens with a convex surface facing the object end. The negative lens 132 is a plano-concave lens with a concave surface facing the image. end.
該第一校正鏡組20A係可在圖1中左右移動，以達校正之功能。該第一校正鏡組20A包括至少一透鏡。在本實施例中，該第一校正鏡組20A係為一第四透鏡21，該第四透鏡21係為一雙凸正透鏡，其具有正光焦度，其曲率半徑較大之凸面朝向物端。The first correcting mirror group 20A can be moved left and right in FIG. 1 to achieve the function of correction. The first correcting mirror group 20A includes at least one lens. In this embodiment, the first correcting lens group 20A is a fourth lens 21, and the fourth lens 21 is a double convex positive lens having a positive refractive power, and a convex surface having a larger radius of curvature faces the object end. .
該第一固定鏡組30A係為固定不動之元件。該第一固定鏡組30A包括至少一透鏡。在本實施例中，該第一固定鏡組30A係為一第五透鏡31，該第五透鏡31係為一負透鏡，具有負光焦度。在本實施例中，該第五透鏡31係為一彎月型負透鏡，其曲率半徑較大之面朝向物端。The first fixed mirror group 30A is a fixed component. The first fixed mirror group 30A includes at least one lens. In the embodiment, the first fixed mirror group 30A is a fifth lens 31, and the fifth lens 31 is a negative lens having a negative refractive power. In the present embodiment, the fifth lens 31 is a meniscus type negative lens having a surface having a larger radius of curvature facing the object end.
該變焦鏡組40A係可在圖1中左右移動，以達變焦之功能。該變焦鏡組40A包括一第六透鏡41、一第七透鏡42及一第八透鏡43，其中該第六透鏡41係為一正透鏡，具有正光焦度；該第七透鏡42係為一負透鏡，具有負光焦度；該第八透鏡43係為一正透鏡，具有正光焦度。在本實施例中，該第六透鏡41係為一平凸透鏡，其凸面朝向物端。該第七透鏡42係由一正透鏡421及一負透鏡422所膠合而成，其中該正透鏡421係為一雙凸透鏡，該負透鏡422係為一雙凹透鏡。該第八透鏡43係為一雙凸透鏡，其曲率半徑較大之凸面朝向物端。在本實施例中，該第六透鏡41及該第七透鏡42係一起移動，而該第八透鏡43係可以另外獨立移動。The zoom lens group 40A can be moved left and right in FIG. 1 to achieve the zoom function. The zoom lens assembly 40A includes a sixth lens 41, a seventh lens 42 and an eighth lens 43. The sixth lens 41 is a positive lens having a positive power; the seventh lens 42 is a negative lens. The lens has a negative power; the eighth lens 43 is a positive lens having positive power. In this embodiment, the sixth lens 41 is a plano-convex lens having a convex surface facing the object end. The seventh lens 42 is made of a positive lens 421 and a negative lens 422. The positive lens 421 is a lenticular lens, and the negative lens 422 is a double concave lens. The eighth lens 43 is a lenticular lens having a convex surface having a large radius of curvature facing the object end. In this embodiment, the sixth lens 41 and the seventh lens 42 move together, and the eighth lens 43 can be separately moved.
該光柵81係為固定不動。該後群鏡組80A依順序包括一第二固定鏡組50A、一第二校正鏡組60A及一第三固定鏡組70A，其中該第二固定鏡組50A及該第三固定鏡組70A係為固定不動，該第二校正鏡組60A係可在圖1中左右移動，以達校正之功能。該第二固定鏡組50A係為負光焦度，該第二校正鏡組60A係為正光焦度，該第三固定鏡組70A係為正光焦度。The grating 81 is stationary. The rear group of mirrors 80A includes a second fixed mirror group 50A, a second correcting mirror group 60A and a third fixed mirror group 70A, wherein the second fixed mirror group 50A and the third fixed mirror group 70A are To be immobilized, the second correcting mirror group 60A can be moved left and right in FIG. 1 to achieve the function of correction. The second fixed mirror group 50A is a negative power, the second correcting mirror group 60A is a positive power, and the third fixed mirror group 70A is a positive power.
該第二固定鏡組50A包括至少一透鏡。在本實施例中，該第二固定鏡組50A係為一第九透鏡51，該第九透鏡51係為一彎月型負透鏡，其曲率半徑較大之面朝向物端。The second fixed mirror assembly 50A includes at least one lens. In the present embodiment, the second fixed mirror group 50A is a ninth lens 51, and the ninth lens 51 is a meniscus type negative lens having a surface having a larger radius of curvature facing the object end.
該第二校正鏡組60A包括一第十透鏡61及一第十一透鏡62，該第十透鏡61係為一負透鏡，該第十一透鏡62係為一正透鏡。在本實施例中，該第十透鏡61係由一負透鏡611及一正透鏡612膠合而成，其中該負透鏡611係為一雙凹透鏡，該正透鏡612係為一雙凸透鏡。該第十一透鏡62係為一彎月型正透鏡，其曲率半徑較小之凸面朝向像端。The second correcting mirror group 60A includes a tenth lens 61 and an eleventh lens 62. The tenth lens 61 is a negative lens, and the eleventh lens 62 is a positive lens. In this embodiment, the tenth lens 61 is formed by bonding a negative lens 611 and a positive lens 612, wherein the negative lens 611 is a double concave lens, and the positive lens 612 is a lenticular lens. The eleventh lens 62 is a meniscus type positive lens having a convex surface having a small radius of curvature facing the image end.
該第三固定鏡組70A包括至少一透鏡。在本實施例中，該第三固定鏡組70A係為一第十二透鏡71，該第十二透鏡71係為一正透鏡。在本實施例中，該第十二透鏡71係為一雙凸透鏡，其曲率半徑較大之凸面朝向像端。The third fixed mirror set 70A includes at least one lens. In the embodiment, the third fixed mirror group 70A is a twelfth lens 71, and the twelfth lens 71 is a positive lens. In the present embodiment, the twelfth lens 71 is a lenticular lens having a convex surface having a large radius of curvature facing the image end.
在本實施例中，可移動之透鏡組有四組：第一組係該第四透鏡21、第二組係該第六透鏡41及該第七透鏡42、第三組係該第八透鏡43、第四組係該第十透鏡61及該第十一透鏡62。另外再加上述之透鏡之配置及分配，使得該鏡頭總成1可固定在總長度250 mm內，同時該四組透鏡組移動方式可使該鏡頭總成1在該光柵81位置不動的情況下達到1.6倍至2.0倍之光學變焦之遠心結構。此外，由廣角至望遠時該鏡頭總成1能有效減低雜散光且大幅提昇進光量，使邊角之對比光量能達到69%以上。再者，該鏡頭總成1之體積與先前技術相比可縮小約40%。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 this embodiment, the movable lens group has four groups: a first group is the fourth lens 21, a second group is the sixth lens 41 and the seventh lens 42, and the third group is the eighth lens 43. The fourth group is the tenth lens 61 and the eleventh lens 62. In addition, the configuration and distribution of the lens described above are added so that the lens assembly 1 can be fixed within a total length of 250 mm, and the four lens groups are moved in such a manner that the lens assembly 1 can be moved without the position of the grating 81. A telecentric structure that achieves an optical zoom of 1.6 to 2.0 times. In addition, from the wide angle to the telephoto, the lens assembly 1 can effectively reduce stray light and greatly increase the amount of light entering, so that the contrast light amount of the corners can reach 69% or more. Moreover, the volume of the lens assembly 1 can be reduced by about 40% compared to the prior art. Finally, the lens assembly 1 has a smaller number of lenses and achieves better assembly tolerances.
參考圖2，顯示本發明鏡頭總成之第二實施例之示意圖。本發明之鏡頭總成2可應用於投影系統，較佳地，可應用於數位光源處理式(DLP)投影系統。該鏡頭總成2依順序包括一對焦鏡組10B、一校正鏡組20B、一變焦鏡組40B、一光柵82及一後群鏡組80B。其中該對焦鏡組10B係為負光焦度，該變焦鏡組40B係為正光焦度。在本文之定義中，圖2之左側係為物端，圖2之右側係為像端。Referring to Figure 2, there is shown a schematic view of a second embodiment of the lens assembly of the present invention. The lens assembly 2 of the present invention can be applied to a projection system, preferably to a digital light source processing (DLP) projection system. The lens assembly 2 includes a focusing lens group 10B, a correcting mirror group 20B, a zoom lens group 40B, a grating 82, and a rear group mirror group 80B in this order. The focus lens group 10B is a negative power, and the zoom lens group 40B is a positive power. In the definition of this document, the left side of Figure 2 is the object end, and the right side of Figure 2 is the image end.
該對焦鏡組10B包括一第一透鏡14、一第二透鏡15及一第三透鏡16。該第一透鏡14、該第二透鏡15及該第三透鏡16均為負透鏡，其具有負光焦度。在本實施例中，該第一透鏡14及該第二透鏡15均為彎月型負透鏡，其曲率半徑較大之面均朝向物端。該第三透鏡16係由一正透鏡161及一負透鏡162所膠合而成，其中該正透鏡161係為一平凸透鏡，其凸面朝向物端；該負透鏡162係為一平凹透鏡，其凹面朝向像端。The focusing lens assembly 10B includes a first lens 14, a second lens 15, and a third lens 16. The first lens 14, the second lens 15, and the third lens 16 are each a negative lens having a negative refractive power. In this embodiment, the first lens 14 and the second lens 15 are both meniscus-type negative lenses, and the faces having the larger radius of curvature face the object ends. The third lens 16 is made of a positive lens 161 and a negative lens 162. The positive lens 161 is a plano-convex lens with a convex surface facing the object end. The negative lens 162 is a plano-concave lens with a concave surface facing the image. end.
該校正鏡組20B係可在圖2中左右移動，以達校正之功能。該校正鏡組20B包括一第四透鏡22及一第五透鏡23，該第四透鏡21係為一雙凸正透鏡，其具有正光焦度，其曲率半徑較大之凸面朝向物端。該第五透鏡23係為一負透鏡，具有負光焦度。在本實施例中，該第五透鏡23係為一彎月型負透鏡，其曲率半徑較大之面朝向物端。在本實施例中，該第四透鏡22及該第五透鏡23可分別獨立移動。The correcting mirror group 20B can be moved left and right in FIG. 2 to achieve the function of correction. The correcting mirror group 20B includes a fourth lens 22 and a fifth lens 23, which is a double convex positive lens having positive refractive power, and a convex surface having a larger radius of curvature faces the object end. The fifth lens 23 is a negative lens having a negative refractive power. In the present embodiment, the fifth lens 23 is a meniscus type negative lens having a surface having a larger radius of curvature facing the object end. In this embodiment, the fourth lens 22 and the fifth lens 23 are independently movable.
該變焦鏡組40B係可在圖2中左右移動，以達變焦之功能。該變焦鏡組40B包括一第六透鏡44、一第七透鏡45及一第八透鏡46，其中該第六透鏡44係為一正透鏡，具有正光焦度；該第七透鏡45係為一負透鏡，具有負光焦度；該第八透鏡46係為一正透鏡，具有正光焦度。在本實施例中，該第六透鏡44係為一平凸透鏡，其凸面朝向物端。該第七透鏡45係由一正透鏡451及一負透鏡452所膠合而成，其中該正透鏡451係為一雙凸透鏡，該負透鏡452係為一雙凹透鏡。該第八透鏡46係為一雙凸透鏡，其曲率半徑較大之凸面朝向物端。在本實施例中，該第六透鏡44及該第七透鏡45係一起移動，而該第八透鏡46係可以另外獨立移動。The zoom lens group 40B can be moved left and right in FIG. 2 to achieve the zoom function. The zoom lens group 40B includes a sixth lens 44, a seventh lens 45, and an eighth lens 46. The sixth lens 44 is a positive lens having a positive power; the seventh lens 45 is a negative lens. The lens has a negative power; the eighth lens 46 is a positive lens having positive power. In this embodiment, the sixth lens 44 is a plano-convex lens having a convex surface facing the object end. The seventh lens 45 is formed by bonding a positive lens 451 and a negative lens 452. The positive lens 451 is a lenticular lens, and the negative lens 452 is a double concave lens. The eighth lens 46 is a lenticular lens having a convex surface having a large radius of curvature facing the object end. In this embodiment, the sixth lens 44 and the seventh lens 45 move together, and the eighth lens 46 can be separately moved.
該光柵82係為固定不動。該後群鏡組80B亦為固定不動。該後群鏡組80B依順序包括一第九透鏡83、一第十透鏡84、一第十一透鏡85及一第十二透鏡86。該第九透鏡83係為一彎月型負透鏡，其曲率半徑較大之面朝向物端。該第十透鏡84係為一負透鏡，該第十一透鏡85係為一正透鏡。在本實施例中，該第十透鏡84係由一負透鏡841及一正透鏡842膠合而成，其中該負透鏡841係為一雙凹透鏡，該正透鏡842係為一雙凸透鏡。該第十一透鏡85係為一彎月型正透鏡，其曲率半徑較小之凸面朝向像端。該第十二透鏡86係為一正透鏡。在本實施例中，該第十二透鏡86係為一雙凸透鏡，其曲率半徑較大之凸面朝向像端。The grating 82 is stationary. The rear group of mirrors 80B is also stationary. The rear group of mirrors 80B includes a ninth lens 83, a tenth lens 84, an eleventh lens 85, and a twelfth lens 86 in sequence. The ninth lens 83 is a meniscus type negative lens having a surface having a larger radius of curvature facing the object end. The tenth lens 84 is a negative lens, and the eleventh lens 85 is a positive lens. In the embodiment, the tenth lens 84 is made of a negative lens 841 and a positive lens 842. The negative lens 841 is a double concave lens, and the positive lens 842 is a lenticular lens. The eleventh lens 85 is a meniscus type positive lens having a convex surface having a small radius of curvature facing the image end. The twelfth lens 86 is a positive lens. In the present embodiment, the twelfth lens 86 is a lenticular lens having a convex surface having a large radius of curvature facing the image end.
在本實施例中，可移動之透鏡組有四組：第一組係該第四透鏡22、第二組係該第五透鏡23、第三組係該第六透鏡44及該第七透鏡45、第四組係該第八透鏡46。另外再加上述之透鏡之配置及分配，使得該鏡頭總成2可固定在總長度250 mm內，同時該四組透鏡組移動方式可使該鏡頭總成2在該光柵82位置不動的情況下達到1.6倍至2.0倍之光學變焦之遠心結構。此外，由廣角至望遠時光圈值(F-number)由2.4至3.8，該鏡頭總成2能有效減低雜散光且大幅提昇進光量，使邊角之對比光量能達到70%以上。再者，該鏡頭總成2之體積與先前技術相比可縮小約40%。最後，該鏡頭總成2之透鏡數目較少，而可達到較佳組裝公差之效果。In this embodiment, the movable lens group has four groups: a first group is the fourth lens 22, a second group is the fifth lens 23, and the third group is the sixth lens 44 and the seventh lens 45. The fourth group is the eighth lens 46. In addition, the configuration and distribution of the lens described above are added so that the lens assembly 2 can be fixed within a total length of 250 mm, and the four lens groups are moved in such a manner that the lens assembly 2 can be moved without the position of the grating 82. A telecentric structure that achieves an optical zoom of 1.6 to 2.0 times. In addition, from the wide-angle to telephoto aperture value (F-number) from 2.4 to 3.8, the lens assembly 2 can effectively reduce stray light and greatly increase the amount of light, so that the contrast of the corners can reach more than 70%. Moreover, the volume of the lens assembly 2 can be reduced by about 40% compared to the prior art. Finally, the lens assembly 2 has a smaller number of lenses and achieves better assembly tolerances.
惟上述實施例僅為說明本發明之原理及其功效，而非用以限制本發明。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。However, the above embodiments are merely illustrative of the principles and effects of the invention and are not intended to limit the invention. Therefore, those skilled in the art can make modifications and changes to the above embodiments without departing from the spirit of the invention. The scope of the invention should be as set forth in the appended claims.
1．．．本發明鏡頭總成之第一實施例1. . . First embodiment of the lens assembly of the present invention
2．．．本發明鏡頭總成之第二實施例2. . . Second embodiment of the lens assembly of the present invention
10A．．．對焦鏡組10A. . . Focus lens group
10B．．．對焦鏡組10B. . . Focus lens group
11．．．第一透鏡11. . . First lens
12．．．第二透鏡12. . . Second lens
13．．．第三透鏡13. . . Third lens
14．．．第一透鏡14. . . First lens
15．．．第二透鏡15. . . Second lens
16．．．第三透鏡16. . . Third lens
20A．．．第一校正鏡組20A. . . First correcting mirror
20B．．．校正鏡組20B. . . Correction mirror
21．．．第四透鏡twenty one. . . Fourth lens
22．．．第四透鏡twenty two. . . Fourth lens
23．．．第五透鏡twenty three. . . Fifth lens
30A．．．第一固定鏡組30A. . . First fixed mirror
31．．．第五透鏡31. . . Fifth lens
40A．．．變焦鏡組40A. . . Zoom lens set
40B．．．變焦鏡組40B. . . Zoom lens set
41．．．第六透鏡41. . . Sixth lens
42．．．第七透鏡42. . . Seventh lens
43．．．第八透鏡43. . . Eighth lens
44．．．第六透鏡44. . . Sixth lens
45．．．第七透鏡45. . . Seventh lens
46．．．第八透鏡46. . . Eighth lens
50A．．．第二固定鏡組50A. . . Second fixed mirror
51．．．第九透鏡51. . . Ninth lens
60A．．．第二校正鏡組60A. . . Second correcting mirror
61．．．第十透鏡61. . . Tenth lens
62．．．第十一透鏡62. . . Eleventh lens
70A．．．第三固定鏡組70A. . . Third fixed mirror
71．．．第十二透鏡71. . . Twelfth lens
80A．．．後群鏡組80A. . . Rear group
80B．．．後群鏡組80B. . . Rear group
81．．．光柵81. . . Grating
82．．．光柵82. . . Grating
83．．．第九透鏡83. . . Ninth lens
84．．．第十透鏡84. . . Tenth lens
85．．．第十一透鏡85. . . Eleventh lens
86．．．第十二透鏡86. . . Twelfth lens
131．．．正透鏡131. . . Positive lens
132．．．負透鏡132. . . Negative lens
161．．．正透鏡161. . . Positive lens
162．．．負透鏡162. . . Negative lens
421．．．正透鏡421. . . Positive lens
422．．．負透鏡422. . . Negative lens
451．．．正透鏡451. . . Positive lens
452．．．負透鏡452. . . Negative lens
611．．．負透鏡611. . . Negative lens
612．．．正透鏡612. . . Positive lens
841．．．負透鏡841. . . Negative lens
842．．．正透鏡842. . . Positive lens
圖1顯示本發明鏡頭總成之第一實施例之示意圖；Figure 1 shows a schematic view of a first embodiment of a lens assembly of the present invention;
圖2顯示本發明鏡頭總成之第二實施例之示意圖。Figure 2 shows a schematic view of a second embodiment of the lens assembly of the present invention.
1．．．本發明鏡頭總成之第一實施例1. . . First embodiment of the lens assembly of the present invention
10A．．．對焦鏡組10A. . . Focus lens group
11．．．第一透鏡11. . . First lens
12．．．第二透鏡12. . . Second lens
13．．．第三透鏡13. . . Third lens
20A．．．第一校正鏡組20A. . . First correcting mirror
21．．．第四透鏡twenty one. . . Fourth lens
30A．．．第一固定鏡組30A. . . First fixed mirror
31．．．第五透鏡31. . . Fifth lens
40A．．．變焦鏡組40A. . . Zoom lens set
41．．．第六透鏡41. . . Sixth lens
42．．．第七透鏡42. . . Seventh lens
43．．．第八透鏡43. . . Eighth lens
50A．．．第二固定鏡組50A. . . Second fixed mirror
51．．．第九透鏡51. . . Ninth lens
60A．．．第二校正鏡組60A. . . Second correcting mirror
61．．．第十透鏡61. . . Tenth lens
62．．．第十一透鏡62. . . Eleventh lens
70A．．．第三固定鏡組70A. . . Third fixed mirror
71．．．第十二透鏡71. . . Twelfth lens
80A．．．後群鏡組80A. . . Rear group
81．．．光柵81. . . Grating
131．．．正透鏡131. . . Positive lens
132．．．負透鏡132. . . Negative lens
421．．．正透鏡421. . . Positive lens
422．．．負透鏡422. . . Negative lens
611．．．負透鏡611. . . Negative lens
612．．．正透鏡612. . . Positive lens
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100118799A TWI444653B (en) | 2011-05-30 | 2011-05-30 | Zoom lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100118799A TWI444653B (en) | 2011-05-30 | 2011-05-30 | Zoom lens |
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| Publication Number | Publication Date |
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| TW201248189A TW201248189A (en) | 2012-12-01 |
| TWI444653B true TWI444653B (en) | 2014-07-11 |
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| TW100118799A TWI444653B (en) | 2011-05-30 | 2011-05-30 | Zoom lens |
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| TW (1) | TWI444653B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105785558B (en) * | 2014-12-22 | 2018-09-18 | 信泰光学(深圳)有限公司 | Zoom lens |
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| TW201248189A (en) | 2012-12-01 |
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