TW201135278A - Zoom lens - Google Patents

Abstract

A zoom lens including a first lens group and a second lens group arranged in sequence from a magnified side toward a reduced side is provided. The first lens group has a negative refractive power and includes a first lens, a second lens, a third lens, and a fourth lens arranged in sequence from the magnified side toward the reduced side. The refractive powers of the first lens, the second lens, the third lens, and the fourth lens are respectively negative, negative, negative, and positive. The second lens group has a positive refractive power and includes a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, and an eleventh lens. The refractive powers of the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens, and the eleventh lens are respectively positive, negative, positive, negative, positive, negative, and positive.

Description

201135278 PT1778-1 32856twf.doc/I VI. Description of the Invention: [Technical Field] The present invention relates to a lens, and more particularly to a zoom lens. [Prior Art] Generally, a 'projection lens can magnify and project a miniature image source onto a screen. The micro image source is, for example, a digital micro-mirror device (DMD) or a liquid-crystal liquid crystal panel (liquid-crystal- On-silicon panel, LCOS panel) or transmissive liquid crystal panel. In addition, the zoom projection lens can project different sizes of clear faces at the same projection distance by the relative movement of different lens groups in the lens. Generally, the larger the aperture of the lens, the higher the difficulty of designing the lens. In addition, the smaller the number of lens groups in the lens, the smaller the degree of freedom for design and the greater the difficulty. The simplest structure of the zoom lens is the structure of two lens groups, and the focal length ratio (the ratio of the focal length to the aperture diameter, f_number) is mostly above 2.4, so the light efficiency is poor. In addition, recently, the illumination source of the projector has a tendency toward the development of a light emitting diode (LED). However, since the brightness of the light-emitting diode is lower than that of the conventional high-pressure mercury lamp (UHP lamp), in order to achieve a higher brightness of the facet, it is necessary to make the aperture of the projection lens larger, even if the focal length ratio is Become smaller. The Republic of China Patent Office 1175^_2A and FIG. 2β disclose a zoom lens including a first lens group and a second lens.

201135278 PT1778-1 32856twf.d〇c/I Relatives m A far-field group is placed between the first steps. The first lens group is formed by sequentially arranging the first lens and the spherical lens of the first piece, and the material is sequentially negative, and the positive lens and the non-mirror group are sequentially arranged by the third lens and the fourth lens. The second composite lens is composed of a second composite lens, the first composite lens is composed of the second lens, and the second composite lens is composed of the other two lenses. - Lens Institute Figure 2 of U.S. Patent No. 7,472,222 discloses a head which comprises a first and a second lens group of five and four Wei. The first lens group has a negative refracting power, and the first group has a positive refracting power. U.S. Patent No. 67: Figure 2: A group of two lenses comprising a first lens group and a second lens group, the =-mirror group has a negative refracting power, and the second lens group has a positive; the first - 隹 r: hua : Country, fine figure 0841039, Figure 3, ί露-种变..., the brothers include a first lens group and a second lens group. The first diopter of the first lens and the second lens group are negative and positive = the first lens and the second lens are arranged in sequence from the object side to the image side, respectively, and the diopter is negative, negative and positive respectively. . In addition, ^ is placed between the first lens group and the image side. The second lens group is composed of a fourth lens, a fifth lens and a sixth lens arranged in sequence on the image side, and the diopter is positive, negative and positive in sequence. The Republic of China Patent No. 1314216 discloses a zoom lens comprising a first lens group and a second lens group having positive diopter. The first transparent group is composed of a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from the object side to the image side, wherein the first lens is

201135278 PT1778-1 32856twf.doc/I The fifth lens has a diopter in the negative order and a negative lens as an aspheric lens. The second rust protects the enemy mountain work / and the brother-through lens group consists of two cemented lenses and a lens with a positive diopter at 3. /, [Summary of the Invention] High for a zoom lens, having a smaller focal length ratio and comparing ===^_Nonton disclosure techniques, one or a part or all of the above or other purposes, the present invention A zoom lens is proposed to be disposed between the magnification side and a reduction side. This zoom lens includes a - lens group and a second lens group. The first lens group is disposed between the magnification side and the reduction side, and has a negative illuminance. The first lens group includes two second lenses, a first lens, a third lens, and a fourth lens, which are sequentially arranged from the magnification side to the reduction side, and the first lens, the second lens, the third lens, and the fourth lens The diopter is negative, negative, negative and positive in sequence. The second lens group is disposed between the first lens group and the reduction side and has a positive refractive power. The second lens group includes a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens and an eleventh lens, and a fifth lens and a sixth lens. The diopter of the seventh lens, the eighth lens, the ninth lens, the tenth lens, and the eleventh lens are positive, negative, positive, negative, positive, greedy, and positive. In the zoom lens according to the embodiment of the present invention, since the diopter of the first lens, the second lens, the third lens, and the fourth lens in the first lens group are negative, negative, negative, and positive, and the second lens is sequentially The fifth lens in the group, the sixth 201135278

32856twf.doc/I PT1778'l 'The eighth lens' ninth lens, tenth lens and tenth lens diopter are positive, negative, positive, negative, and the zoom lens has a small recording, fine lifting Light efficiency. In order to make the present invention and the gamma (four) ducks, the following is a detailed description of the following examples, and the drawings are described in detail below. [Embodiment]

The foregoing and other technical contents, features and effects of the present invention will be apparent from the detailed description of a preferred embodiment of the reference drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation. FIG. 1 is a schematic structural view of a zoom lens according to an embodiment of the present invention. Referring to FIG. 1, the zoom lens 1 of the present embodiment is adapted to be disposed between an enlarged side and a reduced side. In the present embodiment, the zoom lens 1 is adapted to project an image source 5 配置 disposed on the reduction side to a screen on the magnification side, wherein the image source 50 is, for example, a digital micromirror device (digital) Micro-mirror device (DMD), liquid-crystal-on-silicon panel (LCOS panel), transmissive liquid crystal panel or other suitable spatial light modulator (spatial light) Modulator). The zoom lens 1 includes a first lens group 110 and a second lens group 120. The first lens group 11 is disposed between the magnification side and the reduction side and has a negative refracting power. The first lens group 110 includes a first lens 111, a second lens 112, a third lens 113 and a fourth lens 114 arranged in order from the magnification side to the reduction side, 201135278

m //«-l 32856twf.doc/I The second lens group 120 is disposed at the first pass and has a positive refracting power. The second lens is fresh, 'the green small side 12 b a sixth lens 122, a seventh lens η% 匕 二 第五 第五 第五 第五 第五 第五 第五 第五 第五 第五 第五 第五 第五 第五 第五 第五 第五 第五 第五 第五 第五 124 124 124 The diopter of the first lens m, the second lens 112, and the second 114 are sequentially negative, negative, negative, and the ninth lens 125, the tenth lens 126, and the + first mirror 124 between the front mirror U3 and the fourth lens. The fifth lens m, the sixth lens 122, the seventh lens 123, and the lens m, and the ninth lens I25, the tenth lens 丨26, and the twelfth, mirror I24 are sequentially positive, negative, positive, negative, Positive, negative and positive. The diopter in the present embodiment, the first lens group 110 further includes a Π5' twelfth lens 115 disposed on the magnification side and the first lens Hi, and having a positive refracting power. Further, in the present embodiment, the second lens group further includes a thirteenth lens 128, and the thirteenth lens 128 is disposed between the tenth lens 126 and the eleventh lens 127 and has a positive refractive power. Further, the second lens group 120 further includes an aperture stop 129 disposed between the tenth lens 126 and the thirteenth lens 128. In the present embodiment, the fifth lens 121 and the sixth lens 122 constitute a double-lens lens 132, and the eighth lens 124, the ninth lens 125, and the tenth lens 126 constitute a three-glued lens 134. Further, in the present embodiment, the twelfth lens 115 is, for example, a meniscus lens having a convex surface facing the magnification side, and the second lens 111 is, for example, a convex-concave lens having a convex surface toward the magnification side, and the lens 112 is, for example, a convex surface enlarged. The convex lens is a side lens, the third lens I13 is, for example, a double concave lens, and the fourth lens 114 is, for example, a lenticular lens. Further, the fifth lens 121 is, for example, a lenticular lens, and the sixth lens I22 201135278 PT1778-1 32856 twf.doc/I :=: a convex-concave lens having a concave surface toward the magnification side. The seventh transparent object is, for example, a meniscus lens having a convex surface toward the magnification side. The eighth lens 12 has a convex-concave lens with a convex surface facing the magnification side, and the ninth lens 125 is, for example, a lens 'the tenth lens Π6 is, for example, a biconcave lens, and the thirteenth convex portion is, for example, a plano-convex lens whose plane faces the magnification side, and the tenth For example, it is a lenticular lens. In the actual cover towel, the first lens Hi,, the mirror m, the third lens 113, the fourth lens 114, the fifth lens ί ί 透镜 透镜 lens 123, the first lens 124, the ninth lens (2), the younger ten The lens 126, the eleventh lens 127, the twelfth lens 115, and the first one lens 128 are each a spherical lens. In addition, in the present embodiment, the second lens group 12 is adapted to be moved by the side movement to zoom, that is, the zoom lens (10) can be moved by the second lens group 12 〇 image source 5G at a fixed projection distance. Zoom in or _, the size of the image on the screen punch. Further, at the =110, the second lens group 120 is moved to focus, and the Φ image becomes clearer by the blur even if the image is on the screen. The zoom lens 1GQ + of the embodiment, because the first lens group 110 f 114 the second lens 112, the third lens 113 and the fourth through 4 121, the sixth lens 122, the seventh lens 123, the eighth transparent: diopter In order, positive, negative, positive, negative, positive, negative and positive, the second lens _ has a smaller focal length ratio (can be as small as about 18). For example, if the focal length ratio of the conventional projection lens is about $2·4, this embodiment

The zoom lens 1 (10) of 201135278 PTl 778-1 32856twf.doc/I can increase the light efficiency by increasing the aperture, that is, the amount of light passing through the zoom lens 100. In addition, since the aperture stop 129 of the zoom lens 1 is located between the tenth lens 126 and the thirteenth lens 128, the last lens in the second lens group 120 can be made in this embodiment (ie, the tenth The clear aperture (CA) of a lens 127) is only about 21.6 mm. In this way, it is possible to avoid interference between the eleventh lens 127 and other optical components (such as other optical components in the illumination system of the projection device) while taking into account the relative illumination (RI) and light efficiency of the lens. problem. Furthermore, since all of the lenses in the zoom lens 100 can employ a spherical lens without using an aspherical lens, the difficulty in manufacturing and assembling the zoom lens 100 can be effectively reduced, thereby reducing the cost. Further, since the zoom lens 100 of the present embodiment can achieve good image quality by using only thirteen lenses, the light efficiency is better. In addition, since the zoom lens 100 employs a structure of two lens groups (ie, the group 110 and the second lens group 12A), the structure can be made simple, and the structure can be simplified. 2: Du's avoiding the optical components of the lens group 120 and other optical elements in the illumination system of the shadow device. The following will be exemplified by the zoom lens 100, which are listed in the following table. The data is not limited, and those who have the usual knowledge in the technical field are reading the present invention 1 201135278

FI 17/8-1 32856 twf.doc/I Appropriate changes to its parameters or settings may be applied to the principles of the invention, but still fall within the scope of the invention.

(Table 1) Surface Curvature Radius (mm) Spacing (mm) Refractive Index Abbe Number Remarks S1 78.09 6.59 1.59 61.1 Twelfth Lens S2 262.28 2.31 \ S3 58.18 4.78 1.74 44.8 First Lens S4 23.89 8.81 \ S5 116.88 2.5 1.49 70.2 Second lens S6 24.12 11.14 S7 -41.81 1.59 1.52 64.1 Third lens S8 73.79 0.95 S9 49.48 7.85 1.6 39.2 Fourth lens S10 -89.46 12.42 \ S11 1737.5 9.12 1.72 50.2 Fifth lens S12 -31.05 5.3 1.81 25.4 Sixth lens S13 - 75.21 4.41 \ S14 36.48 7.1 1.81 25.4 Seventh lens S15 155.46 2.67 11 201135278 PTl 778-1 32856twf.doc/I S16 31.99 7.79 1.83 37.2 Eighth lens S17 15.83 8.35 1.5 81.5 Ninth lens S18 -27.37 1.68 1.81 25.4 Tenth lens S19 32.53 4.1 \ S20 Infinite 1.76 \ \ Aperture stop S21 Infinite 2.75 1.8 42.2 Thirteenth lens S22 -47.71 2.32 \ \ S23 65.72 5.67 1.74 44.8 Eleventh lens S24 -147.83 25.71 \ \ S25 Infinity 3 1.49 70.2 Glass cover S26 infinite ------ 0.48 - ' (9) What? For example, the distance between the surfaces S1, that is, the distance between the surface S1 and the surface S2 on the optical axis A, is the linear distance between the adjacent garments. For the thickness, refractive index and Abbe number of each mirror in the remarks, please refer to the values corresponding to the spacing, refraction and Abbe number of the same fiscal. Further, in the table, the surface S1 is the two surfaces of the eleventh lens 丨15, the surfaces S3, S4 are the two surfaces of the first translucent 111, and the surfaces S5, S6 are the two surfaces of the second lens 112, S7 S8 is the two surfaces of the second lens 113, and the surface anti-magnification side surface su is the #^ of the orientation 122 of the fifth lens 121, the surface S12 is the fifth lens 121 and the sixth lens, and the surface S13 is the sixth lens. Table of 122 toward the reduction side

201135278 PT1778-1 32S56twf.doc/I. The surfaces S14 and S15 are the two surfaces of the seventh lens 123. The surface is a surface facing the magnification side of the eighth lens 124, the surface S17 is a surface connecting the eighth lens 124 and the ninth lens 125, and the surface S18 is a surface connecting the ninth lens 125 and the tenth lens 126, and the surface S19 is The surface of the ten lens 126 faces the side of the reduction side. The surface S20 is an aperture stop. The surface S21 'S22 is the two surfaces of the thirteenth lens 128, and the surfaces S23, S24 are the two surfaces of the eleventh lens Π7. The surfaces S25 and S26 are the two surfaces of the cover glass 60, wherein the glass cover 60 is used to protect the image source 5〇. The pitch of the column of the surface S26 refers to the distance from the surface S26 to the image source 50. For the parameter values such as the radius of curvature and the spacing of each surface, please refer to Table 1 and will not be repeated here. It is to be noted that in the present embodiment, the pitch of the column of the surface S24 is variable, that is, the pitch can be varied, for example, from 24.94 mm to 28.35 mm to achieve the effect of zooming. When the pitch is 24.94 mm, the zoom lens 100 is at the wide-angle end, and when the pitch is 28.35 mm, the zoom lens 100 is at the telephoto end. Furthermore, in the present embodiment, the effective focal length (EFL) of the zoom lens 1 例如 is, for example, 24.69018 mm, the back focal length is, for example, 0.2738 Ό 7 mm, and the focal length ratio is, for example, 1.804807, which is reduced. The numerical aperture of the side is, for example, 0.278207, and the numerical aperture of the amplification side is, for example, 0.003607. 2A to 2E are diagrams showing imaging optical simulation data of the zoom lens of Fig. 1. Please refer to FIG. 2A to FIG. 2E, wherein FIG. 2A is a modulation transfer function (MTF), which is horizontally focused.

201135278 PT1778-1 32856twf.doc/I

The point offset, and the vertical axis is the modulus of the optical transfer function (m〇dulus 〇f the optical transfier function, modulus of the OTF). In Fig. 2A, a simulation data diagram of light having a wavelength of 430 nm, 460 nm, 520 nm, 62 〇 nm, and 650 nm is shown. Fig. 2B is a graph of relative illumination in which the horizontal axis is the field, that is, the distance from the optical axis A, and the vertical axis is the relative illumination. 2C is a light spot diagram, each of which represents a spot formed by a point projection on the reduced side to a corresponding position on the magnification side, and the spot pattern is light with a wavelength of 520 nm. Simulated. In Fig. 2D, the left-to-right sequence is a field curvature and a distortion pattern, and is simulated by light having wavelengths of 460 nm, 520 nm, and 620 mn, wherein the longitudinal of the two figures The axes are all angles of view and the maximum field of view is 3 〇 589 degrees. The horizontal axis of the % curve is the field curvature, and the horizontal axis of the distortion pattern is the distortion rate. Figure 2E is a lateral chromatic aberration diagram (iaterai c〇i〇r), and is a simulation data diagram of three different wavelengths of light (460 nm, 520 nm, 620 nm, respectively), where the vertical axis is perpendicular to the optical axis A. The field in the direction 'and the maximum field is 14.4270 mm, while the horizontal axis is the lateral chromatic aberration. Since the patterns shown in Figs. 2A to 2E are all within the standard range, the zoom lens of the present embodiment has good image quality. Fig. 3 is a view showing the configuration of a zoom lens according to another embodiment of the present invention. Referring to Fig. 3, the zoom lens 1'' of the present invention is similar to the zoom lens head 100 of Fig. 1, and the difference between the two is as follows. In the zoom lens 100' of the present embodiment, the first lens group 110 does not include the twelfth lens 115 of Fig. 1. Further, the second lens group 12 of the zoom lens 100' of the present embodiment, 14 201135278

In Fl I/ /8-1 32856 twf.doc/I, the fourteenth lens 131 is taken out, that is, the +4th lens 131 is disposed between the thirteenth lens 128' 127 of the thirteenth lens, and has a negative refracting power. . 7/= and the eleventh eleventh lens m and the fourteenth lens, . In the present embodiment, the fourteenth lens 131 is, for example, a convex-concave lens on the aspherical read magnification side. Face lens, as if - concave orientation = 1 变焦 zoom lens, can only use - aspherical lens, so change

The manufacturing and assembly difficulty of 100 can be effectively reduced, thereby reducing t. Further, since the zoom lens (10) of the present embodiment can achieve good image quality only by using the twelve-dimensional dice, the light efficiency is better. In addition to the 2 read lens 100, the effect is similar to that of the zoom lens of Fig. i, and will not be repeated here. In the following, the inner valley will be exemplified by a zoom lens, but the invention is not limited thereto. (Table 2) Surface --- ~ Curvature radius (mm) Spacing (mm) Refractive index Abbe number Remarks S3 ---- 7.85E+01 4.28E+00 1.59 61.1 First lens S4 — 3.63E+01 8.10E +00 S5 1.92E+02 —— 2.50E+00 1.52 64.1 Brother II Lens S6 ----^ 4.39E+01 1.57E+01 --------- S7 -8.97E+01 3.78E+ 00 1.52 ---- 64.1 -- Third lens 15 201135278 ΡΤ1778Ί 32856twf.doc/I S8 8.87E+01 2.04E+00 \ \ S9 7.63E+01 9.00E+00 1.74 49.3 Fourth lens S10 -1.68E+ 02 2.17E+01 \ Sll 1.33E+02 9.33E+00 1.74 49.3 Fifth lens S12 -4.32E+01 3.85E+00 1.7 30.1 Sixth lens S13 -1.62E+02 2.20E+00 \ S14 3.34E+ 01 6.34E+00 1.81 25.4 Seventh lens S15 5.93E+01 9.56E-01 \ S16 2.69E+01 5.81E+00 1.76 26.5 Eighth lens S17 1.48E+01 8.97E+00 1.52 64.1 Ninth lens S18 - 5.02E+01 1.30E+00 1.74 27.8 Tenth lens S19 2.01E+01 2.74E+00 \ S20 Infinite 3.30E+00 \ Aperture stop S27 -2.95E+01 3.30E+00 1.53 56 Fourteenth lens S28 -6.04E+01 1.00E-01 \ S23 7.99E+01 5.55E+00 1.64 55.4 Eleventh lens S24 -2.34E+01 2.49E+01 \ S2 5 Unlimited 3.00E+00 1.49 70.2 Glass cover S26 Infinite 4.83E-01 16 201135278

PT1778-1 32856twf.doc/I In Table 2, the types of the surfaces S3 to S26 are the same as those of the surfaces S3 to S26 in Table 1, and will not be repeated here. Further, the surfaces S27 and S28 are both surfaces of the fourteenth lens 131. The above-mentioned surfaces S27 and S28 are even-order aspheric surfaces, and they can be expressed by the following formula: + A6r6+A8r8+A10r10 + ... Z =-factor-Cr + A2r2 +A4r4 l + ^/l-(l + k) C2r2

Where 'Z is the sag of the optical axis A direction, c is the reciprocal of the radius of the osculating sphere, that is, the radius of curvature near the optical axis A (such as the inner surface S27, S28 of Table 1) The reciprocal of the radius of curvature). k is the quadric coefficient (conic) 'r is the aspherical height, which is the height from the center of the lens to the edge of the lens, and A2, A4, A6, A8, A1Q... is the aspheric coefficient. In the embodiment, the coefficient A2 is 〇. Table 3 lists the parameter values of the surfaces S27 and S28. (Table 3) Aspheric surface number of quadratic coefficients k coefficient a4 coefficient a6 coefficient S27 0.0000 -4.6696 8.8088 -1.4396 E+00 E-05 E-08 E-09 S28 0.0000 -1.4351 8.6913 -2.0266 E+00 E-05 E-08 E-10 Aspherical parameter coefficient Ai〇S27 7.7367E-12 17 201135278

PTl 778-1 32856twf.doc/I S28

In summary, in the zoom lens according to the embodiment of the present invention, the diopter of the first lens, the second lens, the third lens, and the fourth lens in the first lens group are negative, negative, negative, and positive in sequence. And the diopter of the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens, and the eleventh lens in the second lens group are positive, negative, positive, negative, positive , negative and positive, so the zoom lens has a smaller focal length ratio, which in turn improves light efficiency. The above is only the preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the patent application scope of the present invention is not required to achieve the disclosure of the present invention. The Γ part and the title are only used for the scale of the invention. 201135278

PT1 778-1 32856twf.doc/I [Simplified Schematic Description] Fig. 1 is a schematic structural view of a zoom lens according to an embodiment of the present invention. 2A to 2E are diagrams showing imaging optical simulation data of the zoom lens of Fig. 1. Fig. 3 is a view showing the configuration of a zoom lens according to another embodiment of the present invention.

[Main component symbol description] 50 : Image source 60 : Glass cover 100 , 100 ' : Zoom lens 110 , 110 ' : First lens group 111 : First lens 112 : Second lens 113 : Third lens 114 : Fourth lens 115: twelfth lens 120, 120': second lens group 121: fifth lens 122: sixth lens 123: seventh lens 124: eighth lens 125: ninth lens 126: tenth lens 19 201135278

PTl 778-1 32856twf.doc/I 127: eleventh lens 128: thirteenth lens 129: aperture stop 131: fourteenth lens 132: double cemented lens 134: triplet lens A: optical axis S1 to S28: surface

Claims (1)

201135278 m //8-1 32856twf.doc/I VII. Patent application scope 1. Between zoom lenses, the zoom lens includes a first lens group disposed on an enlarged side and a reduced side, and configured to have a negative refracting power. Between the large side of the (four) stage and the _ catch, and the small side sequentially arranged one lens group including the enlarged side to the contraction-fourth lens, and the 3 second lens, the third lens and the fourth lens The diopter is sequentially two to two, the third lens and the first one of the two lenses are negative, negative, negative and positive; and between, and have / / 2 on the first lens group and the reduction side - sixth The mt'tm lin includes a five-lens lens, a tenth lens and a 帛 ten Hu nine lens, a seventh lens, the 'and the strong wei, the sixth lens, the ^ + lens, the ninth lens, the first The ten lens and the luminosity are positive, negative, positive, negative, positive, negative and positive in sequence. The second lens group is suitable for the zoom lens of the second and second brothers 1 'the group is suitable for shifting relative to the second lens ===焦' and g-lens 2 as the variable magnification side described in the first paragraph of the patent application Fan Park and the second mirror 2 lens, the first The twelve lens is disposed in the group and further includes - tenth and two sides; and has a positive refractive power 'the second lens t, the teeth are mirror-by-mirror, and the thirteenth lens is disposed between the tenth lens and the second lens. And having a positive refracting power. The first lens § 第二 second lens, the third lens, the fourth lens, the fourth zoom lens according to claim 3, wherein the 2S name, the present seven wall 1. n 21 5 201135278 π i / /δ-ι 32856twf.doc/I five lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens, the tenth The lens of the twelfth lens is a spherical lens, wherein the twelfth lens has a convex surface facing the enlarged side. a lenticular lens, wherein the first lens is a convex-concave lens having a convex surface facing the magnification side, the second lens is a convex-concave lens having a convex surface facing the magnification side, the third lens is a biconcave lens, and the fourth lens is a Lenticular lens. ~ kg 6 · as described in the third paragraph of the patent application scope a focal lens, wherein the #5th lens is a lenticular lens. The sixth lens is a convex-concave lens having a concave surface facing the magnification side, and the seventh lens is a convex lens having a convex surface facing the magnification side. The eighth lens is - a convex-concave lens having a convex surface facing the magnification side, the first lens is a lenticular lens, the tenth lens is a double concave lens, the twelfth lens is a flat φ toward the magnifying lenticular lens, and the eleventh lens is A zoom lens according to claim 3, wherein the second lens group further includes an aperture stop disposed between the tenth lens and the thirteenth lens. The zoom lens according to claim 1, wherein the first lens group further includes a fourteenth lens disposed between the tenth lens and the eleventh lens and having a negative Diopters. The zoom lens of claim 8, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth Wei, the first a seven-lens, the /V lens, the ninth 22 201135278 ίΊΐ//8-1 32856 twf.doc/T lens, the tenth lens and the first lens, each of which is a spherical lens The fourteenth lens is an aspherical lens. The zoom lens of claim 8, wherein the c is a convex-concave lens with a convex surface facing the magnifying side, the second lens reads #, the convex-concave lens of the magnifying side, the third The lens is a biconcave lens, and the fourth lens is a 1 convex lens. 11. If the fifth lens of the patent application scope is - double smuggling - L, 翻, ιιίή6Λτυ7. #^ 逯 mirror, the six lenses are concave toward the magnifying lens = seven lenses - convex toward the magnifying side The embossed surface is a convex-concave lens having a convex surface facing the enlarged side, the fourteenth lens is a lens, and the tenth lens is a double-concave lens, and the first lens is a double-lens convex convex-concave lens A 12······················································································ , α Haidi ten lens and the 13th. As for the fifth paragraph of the patent application scope j, the six-lens lens constitutes a double-lens mirror II; the mirror, the ninth lens disk $筮ϋ #. Haidi Batong brother and 5 Haidi ten lenses form a three-glued lens.