201140133 六、發明說明： 【發明所屬之技術領域】 [0001]本發明涉及一種折光鏡片、具有該折光鏡片的鏡頭模組 以及具有該鏡頭模組的成像裝置。 【先前技術】 [0002] 如今，成像裝置的小型化、薄型化已經成為一種趨勢。 成像裝置薄型化的-種手段是縮短鏡頭模組的長度，進 而縮短成像裝置的總體厚度以達到薄型化的目的。而現 有的鏡頭模組内鏡片等光學元件均是沿鏡筒的中轴排列 ，光線自所述鏡筒的—端沿直線依次穿過所述鏡筒内的 各光學元件與成像面。為達到變焦及保證成像品質等 目的各光學凡件間需要保持一定的間距，因此鏡筒的 總體長度只能縮短至_定程度，因此單純依靠縮短鏡筒 長度的方式’成像裝置的總體厚度仍_以讓人滿意。 【發明内容】 _3]㈣於此，有必要提供適於降低織機的總體厚度的 折光鏡片、具有該折域片的鏡頭模—及具有該鏡頭 模組的成像裝置。 [0004] 種斤'兄片’包括一三棱鏡、一入光透鏡及一出光透 鏡，所述三棱鏡包括-人光面、-出光面及—全反射面 ’所述入光透鏡固定於所述人光面，所^光透鏡固定 於所述出光面’所述全反射面用於將經過所述人光透鏡 的入射光全反射至所述出光透鏡。 099115361 種鏡頭松，、且，其包括_鏡筒以及设置於所述#胃㈣ 鏡片組件。所述鏡筒的側壁開設有一用於供入射光進入 表單編號A0101 第4頁/共15頁 0992027205-0 [0005] 201140133 且貫穿該㈣的人光孔，.所述鏡片組件包括—折光鏡月 ’所述折総;^括棱鏡 人光透鏡及—出光透 鏡，所述二棱鏡包括一入光面、—出光面及一全反射面 ，所述入S透鏡IU定於所述人光面，所述出光透鏡固定 於所述出光面，所述入光透鏡正對所述入光孔，所述出 光透鏡正對所述鏡筒.遠離所述入光孔的一端，所述全反 射面用於將經過所述入光透鏡的入射光全反射至所述出 光透鏡。 [0006] ❹ [0007] ❹ [0008] [0009] [0010] 099115361 -種成像裝置，其包括-上述的鏡頭模組，所述成像裝 置具有一物側表面。所述鏡頭模組以所述鏡頭模組的長 度方向與所述物侧表面平行的方式設，置於所述成像裝置 内。 由於鏡頭模組通過在其鏡筒侧壁開設入光孔，同時通過 所述折光鏡片將入射光偏折，因此所魂鏡頭模組更埠用 於以長度方向與所述物侧表面平行的方式設置於所述成 像裝置内。因此，所述成像裝置的總體厚度可以進一步 降低。 【實施方式】 下面將結合附圖對本發明作一具體介紹。 請參閱圖1，所示為本發明的鏡頭模組1〇〇的結構圖，所 述鏡頭模組100包括一個鏡筒10以及多個設置於所述鏡筒 10内分別具有正、負光焦度的鏡片組件20。 所述鏡筒1 〇包括一個物側端11以及一個與所述物侧端i i 相背的像側端12。所述鏡筒10的側壁上靠近所述物侧端 0992027205-0 表單編號A0101 第5頁/共15頁 201140133 11開設有一個貫穿的入光孔1 〇l ’所述鏡筒l〇的内表面形 成一個台階13，所述台階13位於所述入光孔101#近所述 像側端12的一侧。 [0011] 請一併參考圖2，所述鏡片組件20包括一個折光鏡片21。 所述折光鏡片21包括一個三棱鏡210、一個入光透鏡212 及一個出光透鏡214。所述三棱鏡210包括一個入光面 2100、一個出光面2102及一個全反射面21 04。所述入光 面2100、出光面2102均為透光平面，所述全反射面2104 為平面。所述入光透鏡212.包:括一個透鏡曲面2120和一個 膠合面2122，所述出光透鏡214包括一個透鏡曲面2140 和一個膠合面2142。所述膠合面2122、2142均為平面。 所述入光透鏡212的膠合面2122、出光透鏡214的膠合面 2142通過膠合的方法分別固定於所述三棱鏡210的入光面 2100及出光面2102。所述入光透鏡212的垂直平分線與 所述出光透鏡214的垂直平分線互相垂直且分別與所述全 反射面2104呈45度角。所述入先透巍212、三棱鏡210、 出光透鏡214之間形成有一顧對應於所述台階13的凹槽 215。所述折光鏡片21自所述鏡筒1〇的物侧端u裝入所 述鏡筒10，所述鏡筒10的台階13抵靠於所述凹槽215内 ，所述入光透鏡212正對所述入光孔1〇1，所述出光透鏡 214正對所述鏡筒1〇的像側端12。本實施方式中，所述透 鏡曲面2120、2140均為非球面的凸面，因此所述折光鏡 片21具有正光焦度。 所述鏡片組件2 0還包括一個第一鏡片22，一個第二鏡片 23以及一個第三鏡片24。所述第一鏡片22 '第二鏡片23 099115361 表單編號A0101 第6頁/共15頁 0992027205-0 [0012] 201140133 [0013] Ο [0014] 〇 [0015] 及第三鏡片24自所述折光鏡片21的出光透鏡214向所述鏡 筒1〇的像侧端12依次排列。本實施方式中所述第一鏡片 22具有負光焦度’所述第二鏡片23具有正光焦度，所述 第彡鏡片24具有負光焦度。當然，所述鏡筒1〇内包括的 鏡片的數量及形狀並不限於本實施方式中的描述，可以 根據不同的標準作其他的變化。 組装完成後的鏡頭模組100的鏡筒10的物側端11封閉。工 作時，光線自所述入光孔101進入所述鏡筒10内折光鏡片 21的入光透鏡212，經過所述全反射面2104的全反射自 .' ：.... 所述出光透鏡214射出，依:次穿過所遠第一鏡片22、所述 第二鏡片23、所述第三鏡片24到達影像感測器（圖未示 )的成像面。 請參閱圖3，所示為具有本發明的鏡頭模組100的一種成 像裝置200的示意圖。所述成像裝置200包括拍攝時朝向 被攝物體的一個物側表面201。由於鏡頭模組1〇〇通過在 其鏡筒10側壁開設入光孔1〇1 ’同時通過所述折光鏡片21 (見圖1)將入射光偏折’因此所鏡頭模皺1〇〇更適用 於以其長度方向與所述物侧表面2〇1平行的方式設置與所 述成像裝置200内。因此，所述成像裝置2〇〇的總體厚度 可以進一步降低。 另外，本領域技術人員還可在本發明精神内做其他變化 ，當然，這些依據本發明精神所做的變化’都應包含在 本發明所要求保護的範圍之内。 【圖式簡單說明】 圖1係本發明鏡頭模組的結構示意圖 099115361 表單編號Α0101 第7頁/共15頁 0992027205-0 [0016] 201140133 [0017] 圖2係本發明鏡頭模組包括的折光鏡片的分解示意圖 [0018] 圖3係具有圖1的鏡頭模組的一種成像裝置的示意圖。 【主要元件符號說明】 [0019] 鏡頭模組：100 [0020] 鏡筒：10 [0021] 入光孔：1 01 [0022] 物側端：11 [0023] 像侧端：12 [0024] 台階：1 3 [0025] 鏡片組件：20 [0026] 折光鏡片：21 [0027] 三棱鏡：21 0 [0028] 入光面：210 0 [0029] 出光面：2102 [0030] 全反射面：2104 [0031] 入光透鏡：212 [0032] 入光曲面：2120 [0033] 膠合面：2122 [0034] 出光透鏡：214 [0035] 出光曲面：2140 099115361 表單編號A0101 第8頁/共15頁 0992027205-0 201140133 [0036] [0037] [0038] [0039] [0040] [0041] [0042] Ο 膠合面：2142 凹槽：215 第一鏡片：22 第二鏡片：23 第三鏡片：24 成像裝置：200 物側表面：201 〇 099115361 表單編號Α0101 第9頁/共15頁 0992027205-0BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refracting lens, a lens module having the refracting lens, and an image forming apparatus having the lens module. [Prior Art] [0002] Nowadays, miniaturization and thinning of an image forming apparatus have become a trend. The thinning method of the image forming apparatus is to shorten the length of the lens module, thereby shortening the overall thickness of the image forming apparatus to achieve the purpose of thinning. In the existing lens module, optical elements such as lenses are arranged along the central axis of the lens barrel, and light rays sequentially pass through the optical elements and the imaging surface in the lens barrel from the end of the lens barrel. In order to achieve the purpose of zooming and ensuring image quality, it is necessary to maintain a certain distance between the optical components. Therefore, the overall length of the lens barrel can only be shortened to a certain extent, so the overall thickness of the imaging device is still simply relied on the method of shortening the length of the lens barrel. _ to be satisfied. SUMMARY OF THE INVENTION [4] Here, it is necessary to provide a refractive lens suitable for reducing the overall thickness of the loom, a lens mold having the folding sheet, and an image forming apparatus having the lens module. [0004] The kite 'brothers' includes a triangular prism, an entrance lens and a light exit lens, and the prism includes a human light surface, a light exit surface, and a total reflection surface. The light incident lens is fixed to the person. The light surface is fixed to the light exit surface. The total reflection surface is for totally reflecting incident light passing through the human light lens to the light exit lens. 099115361 The lens is loose, and it includes a _ barrel and is disposed on the #胃(四) lens assembly. A side wall of the lens barrel is provided with a light hole for incident light entering the form number A0101, page 4, 0992027205-0 [0005] 201140133, and through the (4), the lens assembly includes - refracting mirror month The folding lens comprises a prismatic human light lens and a light exiting lens, the prism comprising a light incident surface, a light exiting surface and a total reflection surface, and the entrance S lens IU is set on the human light surface. The light-emitting lens is fixed to the light-emitting surface, the light-injecting lens is opposite to the light-incident hole, and the light-emitting lens is opposite to the lens barrel. The one end of the light-receiving hole is away from the light-incident hole. The incident light passing through the light incident lens is totally reflected to the light exit lens. [0006] [0009] An image forming apparatus comprising the above-described lens module, the image forming apparatus having an object side surface. The lens module is disposed in such a manner that a length direction of the lens module is parallel to the object side surface, and is placed in the imaging device. Since the lens module is formed by inserting a light hole into the side wall of the lens barrel and deflecting the incident light by the folding lens, the soul lens module is further used for the length direction parallel to the object side surface. Provided in the imaging device. Therefore, the overall thickness of the image forming apparatus can be further reduced. [Embodiment] Hereinafter, the present invention will be specifically described with reference to the accompanying drawings. Please refer to FIG. 1 , which is a structural diagram of a lens module 1 为本 according to the present invention. The lens module 100 includes a lens barrel 10 and a plurality of positive and negative optical beams respectively disposed in the lens barrel 10 . Degree of lens assembly 20. The lens barrel 1 includes an object side end 11 and an image side end 12 opposite to the object side end i i . The side wall of the lens barrel 10 is adjacent to the object side end 0992027205-0. Form No. A0101 5th page/15 pages 201140133 11 is provided with a penetrating light entrance hole 1 〇 l 'the inner surface of the lens barrel l〇 A step 13 is formed, which is located on the side of the light entrance hole 101# near the image side end 12. [0011] Referring to FIG. 2 together, the lens assembly 20 includes a refractive lens 21. The refractive lens 21 includes a triangular prism 210, an entrance lens 212 and an exit lens 214. The triangular prism 210 includes a light incident surface 2100, a light exit surface 2102, and a total reflection surface 21 04. The light incident surface 2100 and the light exit surface 2102 are light transmissive planes, and the total reflection surface 2104 is a flat surface. The light incident lens 212. includes a lens curved surface 2120 and a cemented surface 2122. The light exit lens 214 includes a lens curved surface 2140 and a cemented surface 2142. The glued surfaces 2122, 2142 are all flat. The glued surface 2122 of the light incident lens 212 and the glued surface 2142 of the light exit lens 214 are respectively fixed to the light incident surface 2100 and the light exit surface 2102 of the triangular prism 210 by gluing. The vertical bisector of the light incident lens 212 and the vertical bisector of the light exit lens 214 are perpendicular to each other and are respectively at an angle of 45 degrees to the total reflection surface 2104. A groove 215 corresponding to the step 13 is formed between the first through hole 212, the triangular prism 210, and the light exit lens 214. The refracting lens 21 is loaded into the lens barrel 10 from the object side end u of the lens barrel 1 , the step 13 of the lens barrel 10 abuts against the groove 215 , and the light incident lens 212 is positive For the light entrance aperture 1〇1, the light exiting lens 214 faces the image side end 12 of the lens barrel 1〇. In the present embodiment, the lens curved surfaces 2120 and 2140 are aspherical convex surfaces, and thus the refracting mirror 21 has positive refractive power. The lens assembly 20 also includes a first lens 22, a second lens 23 and a third lens 24. The first lens 22 'second lens 23 099115361 Form No. A0101 Page 6 / Total 15 page 0992027205-0 [0012] 201140133 [0013] Ο [0015] 第三 [0015] and the third lens 24 from the refracting lens The light-emitting lenses 214 of 21 are sequentially arranged toward the image-side end 12 of the lens barrel 1A. In the present embodiment, the first lens 22 has a negative power. The second lens 23 has a positive power, and the second lens 24 has a negative power. Of course, the number and shape of the lenses included in the lens barrel 1 are not limited to those described in the embodiment, and other variations may be made according to different standards. The object side end 11 of the lens barrel 10 of the lens module 100 after assembly is closed. In operation, light enters the light incident lens 212 of the refractive lens 21 in the lens barrel 10 from the light entrance hole 101, and is totally reflected by the total reflection surface 2104 from the light-emitting lens 214. The imaging surface of the image sensor (not shown) passes through the far first lens 22, the second lens 23, and the third lens 24. Referring to Figure 3, a schematic diagram of an imaging device 200 having a lens module 100 of the present invention is shown. The image forming apparatus 200 includes an object side surface 201 facing the object at the time of photographing. Since the lens module 1 开设 is formed by inserting the light hole 1 〇 1 ' into the side wall of the lens barrel 10 while deflecting the incident light through the refracting lens 21 (see FIG. 1), the lens crease 1 〇〇 is more suitable. The inside of the image forming apparatus 200 is disposed in such a manner that its longitudinal direction is parallel to the object side surface 2〇1. Therefore, the overall thickness of the image forming apparatus 2 can be further reduced. In addition, those skilled in the art can make other changes in the spirit of the present invention. Of course, the changes made in accordance with the spirit of the present invention should be included in the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the structure of a lens module of the present invention. 099115361 Form No. 1010101 Page 7 of 15 0992027205-0 [0016] FIG. 2 is a refraction lens included in the lens module of the present invention. [0018] FIG. 3 is a schematic diagram of an image forming apparatus having the lens module of FIG. 1. [Main component symbol description] [0019] Lens module: 100 [0020] Lens barrel: 10 [0021] Light entrance hole: 1 01 [0022] Object side end: 11 [0023] Image side end: 12 [0024] Step :1 3 [0025] Lens assembly: 20 [0026] Refractive lens: 21 [0027] Triangular: 21 0 [0028] Light-in surface: 210 0 [0029] Light-emitting surface: 2102 [0030] Total reflection surface: 2104 [0031 ] Light-in lens: 212 [0032] Light-in surface: 2120 [0033] Glue surface: 2122 [0034] Light-emitting lens: 214 [0035] Light-emitting surface: 2140 099115361 Form number A0101 Page 8 of 15 0992027205-0 201140133 [0038] [0040] [0042] [0042] 胶 glued surface: 2142 groove: 215 first lens: 22 second lens: 23 third lens: 24 imaging device: 200 objects Side surface: 201 〇099115361 Form number Α0101 Page 9/Total 15 page 0992027205-0