201122599 m六、發明說明： [0001] 本發明涉及一種鏡頭模組。 in.201122599 m 6. Invention Description: [0001] The present invention relates to a lens module. In.
[0002] 〇 [0003] 〇 [0004] 【先前技術】 隨著多媒體技術的發展，具有照相功能的電子產品越來 越為廣大消費者所青睐，在人們對電子產品追求小型化 的同時’對其拍攝出物體的影像品質提出了更高要求， 即希望拍攝物體的影像畫面清晰。而成像品質在很大程 度上取決於電子產品内鏡頭模組的優劣。 如圖1所不，目前大多數鏡頭模組包括一鏡筒80及收容农 該鏡筒80内的多個透鏡81。該鏡筒80的一端設有進光孔 84。每—透鏡81包括一正對該進光孔84的光學部811及 圍繞忒光學部811的非光學部8丨3。該非光學部8丨3通過 膠體黏附於鏡筒8Q的内表面’用於讀對應的光學部81 '亥非光學部813的外表面為平面。拍攝時，從進光孔8 進入鏡筒8〇的紳影像信號經過透鏡81聚紐到達位於 鏡頭模組-側的影像感測器，影像感測器將光學影像信 號轉換為電子影像信號而成像。如圖1中光路I所示，由 光學部813的外表面為平面，拍攝時進人鏡筒80έ ^刀光線會在經過透鏡81時於其非光學部813的區域考 夕人全反射’造成透_邊緣形成雜散光線並投射於 影像感測器，從而對拍攝效果造成影響。 【發明内容】 ;此有必要提供一種可消除雜散光線的鏡頭模組 〇 098143324 表單編號Α0101 第3頁/共17頁 0982074271-0 201122599 .amiiniiitii1 一種鏡頭杈組，其包括一鏡筒及收容於該鏡筒Hfi至少 —透翁__該鏡筒的内表面，，麟騷括一 光學部及環繞光學部的一非光學部，所述透鏡的非光學 部的外表面設有複數微小密集排布的突起，所述突起用 以改變光線在穿透該透鏡時射在該非光學部的外表面的 部分光線的照射方向，使得該部分光線能夠穿透該透鏡 向外射出。 [0006]與習知技術相比，本發明提供的鏡頭模組的透鏡的非光 學部的外表面設有複數突起，通過突起改變光線在穿透 該透鏡時射在該非光學部的外表面的部分光線的照射方 向，使得這部分光線可以順利地穿透該透鏡而向外射出 ，從而減少了透鏡的邊緣區域的雜散光線，提高了鏡頭 模組的成像品質。 【實施方式】 [0007] 下面參照附圖結合實施例對本發明作進一步說明。 [0008] 請參閱圖2，為本發明第一實施方式提供的一種鏡頭模組 。該鏡頭模組包括一鐃筒1〇、收容於該鏡筒1〇内的一透 鏡組20及位於該透鏡組2〇—側的影像感測器（圖未示） 。該透鏡組20包括依次收容於該鏡筒10内的一第一透鏡 2〇a、一第二透鏡2〇b及一第三透鏡2〇c。 [0009]所述鏡筒1〇為一端半封閉的筒狀體，該鏡筒1〇包括—圓 環形筒體11及一前蓋12。所述前蓋12形成於筒體u靠近 被拍攝物體的一端，所述筒體Π與前蓋12一體成型。具 體實施時，該前蓋12也可以與筒體u分別單獨成型，組 裝時將前蓋12蓋設在筒體11上。所述前蓋12的中心位 098143324 表單編號A0101 第4頁/共17頁 0982074271-0 201122599 處開設有一進光孔1 2 0 ’外部光線通過該進光孔1 2 ο進入 Ή. ' ；:ls 到鏡筒㈣麴。所述博德i好包括一環繞所述邃嫌組週邊的 内表面11 2。該筒體11的内表面為黑色，其可吸收投射到 該筒體11的内表面112的光線，以減少部分因光線照射到 筒體11的内表面112後形成的雜散光對成像品質的影響。 [0010] Ο ❹ 所述第一、第二、第三透鏡20a、20b、20c均由玻璃或 者塑膠製成。每一透鏡20a、20b、20c包括一位於中間 的先學部22及一位於周圍並環繞光學部22的非光學部24 。所述光學部22為每一透鏡20a、20b、20c中起光學作 用的部分，該光學部22包括一面向進光孔120的入光面 221及一相對的出光面222，所述入光面221和出光面222 可應具體需要設置為凹或凸的形狀，從而對光線進行發 散或會聚。所述光學部22為球面透鏡或非球面透鏡。其 中’第二透鏡20b的光學部22的出光面222為凸面。該第 二透鏡20b的非光學部24包圍並連接光學部22。所述非光 學部24大致呈圓環形槔體狀，包括一從入光面221的周緣 向外輻射延伸的物端两241、一從出光面222的周緣向外 輻射延伸的像端面242及一連接所述物端面241和像端面 242的外周緣之間的外側面243。所述非光學部24的外側 面243直接黏附於鏡筒1〇的内表面112，非光學部24主要 起定位、支撐光學部22的作用。所述第一、第三透鏡20a 、20c的非光學部24的物端面241、像端面242和外侧面 243、以及該第二透鏡20b的物端面241和像端面242均為 平面。 [0011] 該第二透鏡20b的非光學部24的外側面243上形成有複數 098143324 表單編號A0101 第5頁/共17頁 0982074271-0 201122599 微小密集排布的突起246。如圖3所示，每一突起246的截 面呈 V 形’包括第一斜©艺_?翁赛、二斜面245。所述第 一斜面244和第二斜面245分別從第二透鏡2〇b的外側面 243向鏡筒1〇的内表面112所在方向傾斜並且相互靠近延 伸，於靠近該鏡筒10的内表面112的一端相交而形成一夾 角0。不同的實施方式中’每一突起246的第一斜面244 與第二斜面245之間的夾角6»可以在1。至179。之間變化 。所述第一、第二斜面244、245均為平面。所述突起 246沿鏡筒1〇的軸線方向連續排列。所述突起246的各第 一斜面244相互平行，其中’位於最外側的兩突起246中 靠近物端面241的突起246的笫一斜面244從物端面241的 外周緣向像端面2 4 2所在方向傾斜延伸，該第一斜面2 4 4 與物端面241之間呈鈍角。所述突起246的各第二斜面 245相互平行’位於最外側的兩突起246中靠近像端面 242的突起246的第二斜面245從像端面242的外周緣向物 端面241所在方向傾斜延伸，該第二j:籍45與像端面 242之間呈鈍角。位於中央部分的每一突起246的第一斜 面244與相鄰的一突起246的第二斜面245相交。 [0012] 拍攝時，從進光孔120進入到鏡筒1〇的光線穿透第一透鏡 20a的光學部22並進入到第二透鏡2〇b内。由於第二透鏡 20b的光學部22的出光面222為凸面，因此光線通過該第 二透鏡20b的出光面222時會有少量光線被發散地向第二 透鏡20b的非光學部24内反射。如圖2中光路II所示，— 部分光線被第二透鏡20b的出光面222反射後以較大的入 射角朝向第二透鏡22b的非光學部24的物端面241射出， 098143324 表單編號A0101 第6頁/共17頁 〇982〇74271-〇 201122599 ;禮# 由於該物端面241為平面，當光線的入射角大於臨界角， 光線會在該物端宙Mf上發生香藤解並朝向談非光學部2 4 。禮/ Ο Ο [0013] 的外側面243射出。同時，另一部分光線在穿透該第二透 鏡2Ob過程中會被光學部22的入光面221和出光面222折 射或者反射射向非光學部24的物端面241或者像端面242 ,並在該物端面241或者像端面242之間經過一次或者多 -人王反射後朝向該第二透鏡2 〇 b的非光學部2 4的外側面 243射出。由於該非光學部24的外侧面243上形成有突起 246 ’所述突起246的第一斜面244和第二斜面245相對該 物端面241或者像端面242均呈傾斜設置，因此在物端面 241或者像端面242上的發生了全反射的光線射到所述突 起246的第一斜面244或者第二斜面24 5上時光線的入射 角會減小’從而改變原來的行進方向後從所述第一斜面 244或者第二斜面245直接向外射出或者經反射後從物端 面241或者像端面242向外射出。因此，通過於該第二透 鏡20b的非光學部24的外侧面243上突起246的設置，可 以消除光線在透鏡邊緣區域的全反射，從而避免雜散光 的發生，提高了成像品質。 本實施方式中的透鏡組20包括三個透鏡2〇a、20b、20c ’且所述突起246設置於第二透鏡20b的非光學部24的外 侧面243 ’可以理解的是，該透鏡組2〇還可以根據成像需 求而增加一個或者多個透鏡，且所述突起246也可以設置 於該第二透鏡2〇b的非光學部24的物端面241或者像端面 242上，或者根據具體實施的需求而設置於任意一個或者 多個透鏡的非光學部24的外側面243、物端面241或者像 098143324 表單編珑A0101 第7頁/共17頁 0982074271-0 201122599 端、卞243上。如圖4所示，為本發明第二實施方式提供的 螫錄組噚禮鏡頭模組，其與7上述第叫8賢施方式續^调在於··第 —透鏡30b的非光學部34的所有外表面，即物端面go、 像端面342和外侧面343上均形成有突起346。如圖4中光 路IV所示，一部分光線在穿透該第二透鏡3〇b的過程中， 被第一透鏡30b的出光面322反射後以較大的入射角朝向 非光學部34的物端面341射出’由於該物斷面341上形成 有突起346，光線入射在該物端面341的突起346的斜面 上，其入射角相對於入射在平面狀的物端面241上較小， 從而可以直接從該物端面3 41向外射出或者經過少量次數 的反射後從第二透鏡30b的非光學部34的外側面343或者 像端面342向外射出。類似的，光線在穿透該第二透鏡 30b的過程中，每一進入到該非光學部34内部的光線射在 s玄非光學部3 4的像端面3 4 2或者外侧面_3.4 3上時，也均會 因為所述突起346的設置而改變入射角的大小，從而最終 可以順利地穿透該第二透鏡_1)向外射出，有效地消除光 線在透鏡邊緣區域的全反射，避免雜散光的產生。 [0014] 如圖5所示，為本發明第三實施方式提供的一種鏡頭模組 ，其與上述第二實施方式的不同在於：該第三透鏡40c的 非光學部44的所有外表面，即物端面441、像端面442和 外侧面443上也分別形成有複數突起446。如圖5中光路V 和光路VI所示，該第三透鏡40c的非光學部44的外表面設 置的突起446的作用原理與第二實施方式中第二透鏡30b 的外表面上所設置的突起346的作用原理相同，因此在此 不再贅述。 098143324 表單編號A0101 0982074271-0 201122599 t . [0015] 综上所述，本發明符合發明專利要件，爰依法提出專利 [0016] 申請。惟，以茗殫述者僅為V典發明之較佳實施例，舉凡 熟悉本案技藝之人士，在爰依本發明精神所作之等效修 飾或變化，皆應涵蓋於以下之申請專利範圍内。 【圖式簡單說明】 圖1為習知技術的鏡頭模組的結構示意圖。 [0017] 圖2為本發明第一實施例的鏡頭模組的結構示意圖。 [0018] 圖3是圖2中圈III部分的放大示意圖。 〇 W [0019] 圖4為本發明第二實施例的鏡頭模組的結構示意圖。 [0020] 圖5為本發明第三實施例的鏡頭模組的結構示意圖。 [0021] 【主要元件符號說明】 鏡筒：10 [0022] 筒體：11 [0023] 内表面：112 〇 [0024] 前蓋：12 [0025] 進光孔：120 [0026] 透鏡組：20 [0027] 第一透鏡：2 0 a [0028] 第二透鏡：20b、30b [0029] 第三透鏡：20c、40c [0030] 光學部：22 098143324 表單編號A0101 第9頁/共17頁 0982074271-0 201122599 [0031] 入光面：2 2. Γ •邨 24 ' 切、 [0032] 出光面：222、322 [0033] 非光學部：24、34 '44 [0034] 物端面：241、341 、441 [0035] 像端面：242、342 ' 442 [0036] 外側面：2 4 3、3 4 3 ' 443 [0037] 第一斜面：244 [0038] 第二斜面：245 [0039] 突起：246、346、 446 [0040] 夾角：Θ [0041] 鏡筒：80 [0042] 透鏡：81 [0043] 進光孔：84 [0044] 光學部：811 [0045] 非光學部：813 098143324 表單編號Α0101 第10頁/共17頁 0982074271-0[0002] 〇[0003] 〇[0004] [Prior Art] With the development of multimedia technology, electronic products with camera functions are increasingly favored by consumers, while people are pursuing miniaturization of electronic products. The image quality of the captured object puts forward higher requirements, that is, the image of the desired object is clear. The quality of the image depends to a large extent on the quality of the lens module in the electronic product. As shown in Fig. 1, most lens modules include a lens barrel 80 and a plurality of lenses 81 housed in the lens barrel 80. One end of the lens barrel 80 is provided with a light entrance hole 84. Each lens 81 includes an optical portion 811 facing the light entrance hole 84 and a non-optical portion 8丨3 surrounding the pupil optical portion 811. The non-optical portion 8丨3 is adhered to the inner surface of the lens barrel 8Q by a colloid for reading the corresponding optical portion 81. The outer surface of the optical portion 813 is a flat surface. During shooting, the image signal entering the lens barrel 8 from the light entrance hole 8 passes through the lens 81 to reach the image sensor located on the lens module side, and the image sensor converts the optical image signal into an electronic image signal for imaging. . As shown by the optical path I in FIG. 1, the outer surface of the optical portion 813 is a flat surface, and when the lens is taken, the lens light is transmitted to the area of the non-optical portion 813 when it passes through the lens 81. The through-edge forms stray light and is projected onto the image sensor, which affects the shooting effect. SUMMARY OF THE INVENTION It is necessary to provide a lens module that can eliminate stray light. 〇 098143324 Form No. 1010101 Page 3 of 17 0982074271-0 201122599 .amiiniiitii1 A lens cymbal set including a lens barrel and housed in The lens barrel Hfi is at least an inner surface of the lens barrel, and an optical portion and a non-optical portion surrounding the optical portion, and the outer surface of the non-optical portion of the lens is provided with a plurality of micro-dense rows a protrusion of the cloth for changing a direction of illumination of a portion of the light incident on the outer surface of the non-optical portion when the light penetrates the lens, such that the portion of the light can be emitted outwardly through the lens. Compared with the prior art, the outer surface of the non-optical portion of the lens of the lens module provided by the present invention is provided with a plurality of protrusions, and the protrusions change the light rays incident on the outer surface of the non-optical portion when penetrating the lens. The direction of illumination of part of the light allows the light to pass through the lens and exit outward, thereby reducing stray light in the edge region of the lens and improving the imaging quality of the lens module. [Embodiment] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings. 2 is a lens module according to a first embodiment of the present invention. The lens module includes a lens barrel 1 , a lens group 20 housed in the lens barrel 1 , and an image sensor (not shown) on the side of the lens group 2 . The lens group 20 includes a first lens 2〇a, a second lens 2〇b and a third lens 2〇c which are sequentially received in the lens barrel 10. The lens barrel 1 is a cylindrical body whose one end is semi-closed, and the lens barrel 1 includes a circular annular body 11 and a front cover 12. The front cover 12 is formed at one end of the cylindrical body u near the object to be photographed, and the cylindrical body 一体 is integrally formed with the front cover 12. Specifically, the front cover 12 may be separately formed from the cylindrical body u, and the front cover 12 may be placed on the cylindrical body 11 during assembly. The center position of the front cover 12 is 098143324. Form No. A0101 Page 4 / Total 17 page 0982072741-0 201122599 There is a light entrance hole 1 2 0 'External light passes through the light entrance hole 1 2 ο enter Ή. ' ;: ls To the lens barrel (four) 麴. The Bode i preferably includes an inner surface 11 2 surrounding the periphery of the suspected group. The inner surface of the cylinder 11 is black, which absorbs light projected onto the inner surface 112 of the cylinder 11 to reduce the influence of stray light formed by the light irradiated onto the inner surface 112 of the cylinder 11 on the image quality. . [0010] The first, second, and third lenses 20a, 20b, and 20c are each made of glass or plastic. Each lens 20a, 20b, 20c includes an intermediate portion 22 in the middle and a non-optical portion 24 that surrounds and surrounds the optical portion 22. The optical portion 22 is an optically active portion of each of the lenses 20a, 20b, and 20c. The optical portion 22 includes a light incident surface 221 facing the light entrance hole 120 and an opposite light exit surface 222. The light-emitting surface 221 and the light-emitting surface 222 may be arranged in a concave or convex shape as needed to diverge or converge the light. The optical portion 22 is a spherical lens or an aspheric lens. The light exit surface 222 of the optical portion 22 of the second lens 20b is a convex surface. The non-optical portion 24 of the second lens 20b surrounds and connects the optical portion 22. The non-optical portion 24 is substantially in the shape of a circular ring, and includes an object end 241 radiating outwardly from a periphery of the light incident surface 221, an image end surface 242 radiating outward from a periphery of the light exit surface 222, and An outer side surface 243 between the object end surface 241 and the outer peripheral edge of the image end surface 242 is connected. The outer surface 243 of the non-optical portion 24 is directly adhered to the inner surface 112 of the lens barrel 1b, and the non-optical portion 24 mainly functions to position and support the optical portion 22. The object end surface 241, the image end surface 242 and the outer side surface 243 of the non-optical portion 24 of the first and third lenses 20a, 20c, and the object end surface 241 and the image end surface 242 of the second lens 20b are both planar. [0011] The outer surface 243 of the non-optical portion 24 of the second lens 20b is formed with a plurality of 098143324 Form No. A0101 Page 5 of 17 0982074271-0 201122599 A minute densely arranged protrusion 246. As shown in Fig. 3, each of the protrusions 246 has a V-shaped cross section including a first oblique angle, and a second inclined surface 245. The first inclined surface 244 and the second inclined surface 245 are respectively inclined from the outer side surface 243 of the second lens 2b to the inner surface 112 of the lens barrel 1b and extend close to each other near the inner surface 112 of the lens barrel 10. One end intersects to form an angle of zero. In different embodiments, the angle 6» between the first bevel 244 and the second bevel 245 of each protrusion 246 may be one. To 179. Change between. The first and second slopes 244 and 245 are all flat. The projections 246 are continuously arranged in the axial direction of the lens barrel 1〇. The first slopes 244 of the protrusions 246 are parallel to each other, wherein the first slope 244 of the protrusions 246 located near the object end surface 241 in the two outermost protrusions 246 is from the outer circumference of the object end surface 241 toward the image end surface 2 4 2 The oblique extension extends at an obtuse angle between the first inclined surface 2 4 4 and the object end surface 241. The second slopes 245 of the protrusions 246 are parallel to each other. The second slopes 245 of the protrusions 246 near the image end surface 242 of the two outer protrusions 246 are obliquely extended from the outer circumference of the image end surface 242 toward the object end surface 241. The second j: an obtuse angle between the document 45 and the image end surface 242. The first bevel 244 of each projection 246 at the central portion intersects the second bevel 245 of an adjacent projection 246. [0012] At the time of photographing, light entering the lens barrel 1 from the light entrance hole 120 penetrates the optical portion 22 of the first lens 20a and enters the second lens 2'b. Since the light-emitting surface 222 of the optical portion 22 of the second lens 20b is convex, a small amount of light is scattered toward the non-optical portion 24 of the second lens 20b when the light passes through the light-emitting surface 222 of the second lens 20b. As shown in the optical path II in Fig. 2, a part of the light is reflected by the light-emitting surface 222 of the second lens 20b and is emitted toward the object end surface 241 of the non-optical portion 24 of the second lens 22b at a large incident angle, 098143324 Form No. A0101 6 pages/total 17 pages 〇982〇74271-〇201122599;礼# Since the object end surface 241 is a plane, when the incident angle of the light is larger than the critical angle, the light will be scented on the object end Mf and oriented toward the non-optical Department 2 4 . The outer side 243 of the ceremony / Ο Ο [0013] is emitted. At the same time, another part of the light is refracted or reflected by the light incident surface 221 and the light exit surface 222 of the optical portion 22 during the penetration of the second lens 2Ob or toward the object end surface 241 or the image end surface 242 of the non-optical portion 24, and The object end surface 241 or the image end surface 242 is reflected by the outer side surface 243 of the non-optical portion 24 of the second lens 2 〇b after being reflected by one or more people. Since the first inclined surface 244 and the second inclined surface 245 of the protrusion 246 are formed on the outer surface 243 of the non-optical portion 24, the first inclined surface 244 and the second inclined surface 245 are inclined with respect to the object end surface 241 or the image end surface 242, so that the object end surface 241 or the image When the totally reflected light on the end surface 242 hits the first inclined surface 244 or the second inclined surface 24 of the protrusion 246, the incident angle of the light is reduced, thereby changing the original traveling direction from the first inclined surface. The 244 or the second inclined surface 245 is directly emitted outward or is reflected and then emitted outward from the object end surface 241 or the image end surface 242. Therefore, by the arrangement of the protrusions 246 on the outer side surface 243 of the non-optical portion 24 of the second lens 20b, total reflection of light in the edge region of the lens can be eliminated, thereby preventing the occurrence of stray light and improving the image quality. The lens group 20 in the present embodiment includes three lenses 2〇a, 20b, 20c′ and the protrusions 246 are disposed on the outer side surface 243′ of the non-optical portion 24 of the second lens 20b. It is understood that the lens group 2 One or more lenses may be added according to imaging requirements, and the protrusions 246 may also be disposed on the object end surface 241 or the image end surface 242 of the non-optical portion 24 of the second lens 2〇b, or according to a specific implementation. The outer side surface 243 of the non-optical portion 24, which is disposed on any one or more lenses, or the object end surface 241, or the like, 098143324, is edited on page 7 of a total number of pages 0982074271-0 201122599, 卞243. As shown in FIG. 4, the cymbal group 噚 镜头 镜头 镜头 , , , , , , , , , 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 镜头 第 第 第 第 第 第 第 第 第 第 第 第Protrusions 346 are formed on all of the outer surfaces, i.e., the object end face go, the image end face 342, and the outer side face 343. As shown by the optical path IV in FIG. 4, a part of the light is reflected by the light-emitting surface 322 of the first lens 30b in the process of penetrating the second lens 3b, and faces the object end surface of the non-optical portion 34 at a large incident angle. 341 is emitted 'Because the protrusion 346 is formed on the section 341 of the object, the light is incident on the slope of the protrusion 346 of the object end surface 341, and the incident angle thereof is small with respect to the incident end surface 241 of the object, so that it can be directly The object end face 3 41 is emitted outward or emitted from the outer side surface 343 of the non-optical portion 34 of the second lens 30b or the image end surface 342 after a small number of reflections. Similarly, in the process of penetrating the second lens 30b, each light entering the inside of the non-optical portion 34 is incident on the image end face 3 4 2 or the outer side surface _3.4 3 of the squint non-optical portion 34. The size of the incident angle is also changed by the arrangement of the protrusions 346, so that the second lens 1) can be smoothly emitted outward, effectively eliminating total reflection of the light in the edge region of the lens, and avoiding miscellaneous The generation of astigmatism. [0014] As shown in FIG. 5, a lens module according to a third embodiment of the present invention is different from the second embodiment in that all outer surfaces of the non-optical portion 44 of the third lens 40c, that is, A plurality of protrusions 446 are also formed on the object end surface 441, the image end surface 442, and the outer surface 443, respectively. As shown in the optical path V and the optical path VI in FIG. 5, the action principle of the protrusion 446 provided on the outer surface of the non-optical portion 44 of the third lens 40c and the protrusion provided on the outer surface of the second lens 30b in the second embodiment are shown. The function of 346 is the same, so it will not be described here. 098143324 Form No. A0101 0982074271-0 201122599 t . [0015] In summary, the present invention complies with the invention patent requirements, and patents are filed according to law [0016]. However, the present invention is intended to be a preferred embodiment of the invention, and equivalent modifications and variations made by those skilled in the art of the present invention are intended to be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of a lens module of a prior art. 2 is a schematic structural view of a lens module according to a first embodiment of the present invention. 3 is an enlarged schematic view of a portion of the circle III of FIG. 2. 4 is a schematic structural view of a lens module according to a second embodiment of the present invention. 5 is a schematic structural view of a lens module according to a third embodiment of the present invention. [0021] Main tube symbol description: Lens barrel: 10 [0022] Cylinder: 11 [0023] Inner surface: 112 〇 [0024] Front cover: 12 [0025] Light-receiving hole: 120 [0026] Lens group: 20 [0027] First lens: 20 a [0028] Second lens: 20b, 30b [0029] Third lens: 20c, 40c [0030] Optical portion: 22 098143324 Form number A0101 Page 9 / Total 17 page 0982074271- 0 201122599 [0031] Light-in surface: 2 2. Γ • Village 24 'cut, [0032] Light-emitting surface: 222, 322 [0033] Non-optical part: 24, 34 '44 [0034] Object end face: 241, 341, 441 [0035] Image end face: 242, 342 ' 442 [0036] Outer side: 2 4 3, 3 4 3 ' 443 [0037] First bevel: 244 [0038] Second bevel: 245 [0039] Protrusion: 246, 346, 446 [0040] Angle: Θ [0041] Lens barrel: 80 [0042] Lens: 81 [0043] Light entrance: 84 [0044] Optical part: 811 [0045] Non-optical part: 813 098143324 Form number Α 0101 10 pages / total 17 pages 0982074271-0