200949298 九、發明說明： 【發明所屬之技術領域】 本發明是關於一種鏡頭，更具體地說是關於—種前光圈式 鏡頭以及用於製造其鏡室的模具。 【先前技術】 衆所周知，鏡頭通常包括一鏡室以及設置在其中的鏡片、 光圈、快門等。在某些小型數位影像産品例如照像手機中，常 ❿ 將光圈設置在鏡片前方.，最靠近物端。例如，在申請號爲 01272836.5的中國實用新型專利中，公開了一種數位影★鏡 頭，將光圈設置在光學鏡片組的前方，使鏡頭結構簡單、總長 度减小、組裝簡單。 如圖1-3所示，這種前光圈式鏡頭的鏡室丨内部靠近前端 處，設置有光圈斷面2，用於將光圈固定於此。由於受到成形 條件的限制，斷面的寬度大多爲〇.〇5mnH) 〇8inm。同時光圈的 厚度較薄，小於〇· 05麵。此時入射的光線在斷面處會發生較多 Ο 税線反射，較容將生喊（flare)、鬼影（細t)等雜 散光現象。 【發明内容】 本發明要解决的技術醜在於，針對現有技術巾前光圈式 鏡頭谷易産生雜散光的缺點，提供—種前光圈式鏡頭以及用於 製造其鏡室的模具，可减輕雜散光現象。 一本發明解决其技術問題所採用的技術方案是：構造一種前 光圈式鏡頭’包括-鏡室、-設置在鏡室中的鏡片、以及—設 置在鏡片前方的光圈，該光圈與該鏡室通過埋入射出的方式結 200949298 合爲一體 在本發明所述的前光圈式餘 氺園齡二 r- ^ , ηπ 負中’該鏡室在該光圈處形成 光圈斷面，其厚度與該光圈的厚度相同 ％ 該鏡室内部設置有一第 面向前擴展至該鏡室的最前 在本發明所述的前光圈式鏡項中 倒角，該第一倒角從該光圈晰 端 該鏡室内部設置有一第 擴展並且接近該鏡片的 在本發明所述的前光圈式鏡頭中，BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens, and more particularly to a front aperture type lens and a mold for manufacturing the mirror chamber thereof. [Prior Art] As is well known, a lens generally includes a mirror chamber and a lens, an aperture, a shutter, and the like disposed therein. In some small digital imaging products, such as photo phones, it is often the case that the aperture is placed in front of the lens. It is closest to the object. For example, in the Chinese utility model patent No. 01272836.5, a digital shadow lens is disclosed, which is disposed in front of the optical lens group to make the lens structure simple, the total length is reduced, and the assembly is simple. As shown in Fig. 1-3, the front of the mirror chamber of the front aperture lens is near the front end, and an aperture section 2 is provided for fixing the aperture thereto. Due to the limitation of the forming conditions, the width of the section is mostly 〇.〇5mnH) 〇8inm. At the same time, the thickness of the aperture is thinner than the 〇·05 surface. At this time, the incident light will have more Ο tax line reflection at the cross section, and the content will be stray light such as flare and ghost (thin t). SUMMARY OF THE INVENTION The ugly technique to be solved by the present invention is to provide a front aperture type lens and a mold for manufacturing the mirror chamber thereof, which can reduce the miscellaneousness of the prior art towel front aperture lens. Astigmatism. A technical solution adopted by the present invention to solve the technical problem is to construct a front aperture type lens 'including a mirror chamber, a lens disposed in the mirror chamber, and an aperture disposed in front of the lens, the aperture and the mirror chamber By the method of burying the incident, the junction 200949298 is integrated into the front aperture type of the eaves of the invention, the second lens is r-^, ηπ negative, and the mirror chamber forms an aperture section at the aperture, the thickness of which is the aperture The same thickness of the inside of the mirror is provided with a first surface extending forwardly to the front of the mirror chamber in the front aperture type of the present invention, the first chamfer is set from the inside of the mirror In the front aperture lens of the present invention having a first extension and proximity to the lens,
二倒角，該第二倒角從該光圈斷面向 安裝位置。 ^日_提供了-翻於製造前光赋綱的鏡室的模 岐侧模仁、—可_账、以及用於«套設在 的-外模仁’觀定側模仁朝向該可動側模仁的端面 第-臺階’該可動側模仁朝向該固定側模仁的端面 ^又置有-第二臺階，其t，該第—臺階上，設置有一光圈固 定 疋柱；該可動側模仁的第二臺階上紅有祕容納該光圈固 柱的一凹槽。 在本發明所述的用於製造前光圈式鏡頭的鏡室的模具 中’該凹槽的深度大於或等於該光圈固定柱的長度。 在本發明所述的用於製造前光圈式鏡頭的鏡室的模具 中，該固定側模仁的—第—臺階上’設置有—光圈防脫落結構。、 在本發明所述的用於製造前光圈式鏡頭的鏡室的模具 中’該防脫落結構包括設置在減卿錄周_數猶吸氣 孔，該吸氣孔貫穿至該固定側模仁的另一侧。 在本备明所述的用於製造前光圈式鏡頭的鏡室的模具 200949298 該防脫落結構還包括設置在該光圈固定柱周圍的一吸槽， 該吸氣孔設置在該吸槽令。 實施本發明的前光圈式鏡頭以及用於製造其鏡室的模 具，具有以下優點：通過埋入射出的成形方法，縮小前光圈斷 面尺寸，减少或消除了因前光圈斷面的反射而產生的雜散光現 象。 【貫施方式】 在本發明中’前光圈式鏡頭包括一鏡室、一設置在鏡室中 的鏡片、以及一設置在鏡片前方的光圈，該光圈靠近物端。如 圖4和圖5所示’鏡室101與光圈1〇2通過埋入射出的方式結 合爲一體。鏡室101包括圓筒狀後部和凸環狀前部1〇3。 光圈102設置在鏡室1〇1内，靠近凸環狀前部1〇3 ;鏡室1〇1 在光圈102處形成光圈斷面，其厚度與光圈1〇2的厚度相同。 圓筒狀後部107中設有一内腔1〇8，用於放置對應的光學鏡 片。爲了避免對光線造成影響，在光圈1〇2前方，鏡室1〇1内 部設置有-第-倒角1〇4 ’第-倒角綱從光圈斷面向前擴展 至鏡室101的最前端。在光圈1〇2後方，鏡室1〇1内部也設置 有一第二倒角1〇5，該第二倒角1〇5從光圈斷面向後擴展，接 近鏡片安裝位置。 如圖6和圖7所示，光圈102的厚度爲〇 〇29刪，由於光 圈1〇2是通過埋入射出的方式與鏡室1〇1、结合爲一體，因此鏡 室1〇1的光圈斷面的厚度也是〇· 029咖。入射的光線不會在斷 面處發生錢反射，獨免喊、鬼料雜光現象。 Μ下將參照圖8—12描述光圈搬與鏡室逝通過埋入射 200949298 出結合爲-體的過程。參照圖8—10,鏡室1〇1的料 固 =模，謝，其i圓柱狀，外徑與鏡請的凸環狀前部ι〇3 相同。在固定側模仁撕朝向可動側模仁的端面上，設 置有一弟-圓錐狀臺階2G2，與鏡室m的第—倒角⑽的形 狀相it配。在第—圓錐狀臺階2Q2上的中心位 光圈固定柱203。 ❹The second chamfer is from the aperture cross section to the mounting position. ^日_ Provided - the mold side of the mirror chamber of the front ray of the manufacturing front, - can be used, and for the "outer - outer mold" view side mold head facing the movable side The end surface of the mold core is stepped-step', and the movable side mold core is disposed with a second step toward the end surface of the fixed side mold core, wherein t, the first step is provided with a diaphragm fixing mast; the movable side mold On the second step of the bene, there is a groove that accommodates the aperture of the aperture. In the mold for fabricating the mirror chamber of the front aperture lens of the present invention, the depth of the groove is greater than or equal to the length of the aperture fixing post. In the mold for manufacturing the mirror chamber of the front aperture type lens according to the present invention, the -step on the fixed side mold core is provided with a diaphragm anti-shedding structure. In the mold for manufacturing the mirror chamber of the front aperture type lens according to the present invention, the anti-drop structure includes a plurality of suction holes disposed in the reduction chamber, and the suction holes penetrate through the fixed side mold core. The other side. The mold for manufacturing the mirror chamber of the front aperture lens described in the present specification 200949298 The anti-drop structure further includes a suction groove disposed around the aperture fixing post, and the suction hole is disposed in the suction groove. The front aperture type lens and the mold for manufacturing the mirror chamber of the present invention have the following advantages: the size of the front aperture section is reduced by the method of burying the entrance, and the reflection of the front aperture section is reduced or eliminated. The phenomenon of stray light. [Integrated Mode] In the present invention, the 'front aperture type lens includes a mirror chamber, a lens disposed in the mirror chamber, and an aperture disposed in front of the lens, the aperture being close to the object end. As shown in Figs. 4 and 5, the mirror chamber 101 and the diaphragm 1〇2 are integrally joined by means of burying. The mirror chamber 101 includes a cylindrical rear portion and a convex annular front portion 1〇3. The aperture 102 is disposed in the mirror chamber 1〇1 near the convex annular front portion 1〇3; the mirror chamber 1〇1 forms an aperture cross section at the aperture 102, the thickness of which is the same as the thickness of the aperture 1〇2. An inner cavity 1 〇 8 is provided in the cylindrical rear portion 107 for placing a corresponding optical lens. In order to avoid the influence of the light, in front of the aperture 1〇2, the inside of the mirror chamber 1〇1 is provided with a -th-chamfer 1〇4 ′th-the chamfering section extending forward from the aperture section to the foremost end of the mirror chamber 101. Behind the aperture 1〇2, a second chamfer 1〇5 is also disposed inside the mirror chamber 1〇1, and the second chamfer 1〇5 is extended rearward from the aperture section to be close to the lens mounting position. As shown in FIG. 6 and FIG. 7, the thickness of the aperture 102 is 〇〇29, and since the aperture 1〇2 is integrated with the mirror chamber 1〇1 by means of burying, the aperture of the mirror chamber 1〇1 is The thickness of the section is also 〇·029 coffee. The incident light will not reflect on the surface of the broken surface, and it will not be shouted or ghosted. The process of combining the aperture movement with the mirror chamber through the buried incident 200949298 will be described with reference to Figs. 8-12. Referring to Figure 8-10, the material of the mirror chamber 1〇1 is solid-mode, thank you, it is cylindrical, and the outer diameter is the same as the convex front part ι〇3 of the mirror. On the end face of the fixed side mold torn toward the movable side mold, a disc-conical step 2G2 is provided, which is matched with the shape of the first chamfer (10) of the mirror chamber m. The column 203 is fixed at the center of the first conical step 2Q2. ❹
爲了防止光圈102脫落，在第一圓錐狀臺階2〇2上、光圈 固定柱203的周圍設置有防脫落結構。該防脫落結構可以是， 例如設置在光圈固定柱203周圍的吸槽204。在吸槽204中設 置有若干吸氣孔2G5，該吸氣孔205貫穿至固定侧模仁2〇1的 另-側。按照如圖10所示中的箭頭方向，向固㈣模仁2〇1 的另一侧吸氣，即可使光圈102固定，如此可避免光圈1〇2在 模具合模時脫落或者被工作人員碰觸而脫落。同時，該吸氣孔 205也可在模具合模時增加排氣。 參照圖11和® 12 ’鏡室1〇!的模具還包括一可動側模仁 301，以及環繞在固定側模仁2〇1和可動侧模仁3〇1外部的外 模仁（未圖示）。該可動側模仁301包括大直徑柱狀部分3〇2 和小直徑柱狀部分303，大直徑柱狀部分3〇2的外徑與固定侧 模仁201的外徑相同；而小直徑部分3〇3的形狀和長度與鏡室 101中用於放置光學鏡片的内腔1〇8相適配。在朝向固定側模 仁201的小直徑部分303上，設置有一第二圓錐狀臺階3〇4， 與鏡室101的第二倒角105的形狀相適配。在該第二圓錐狀臺 階304的前端面上，設置有一凹槽3〇5，用於容納固定侧模仁 201的光圈固定柱203。該凹槽305的深度大於或等於光圈固 8 200949298 兩者配合時，與光圈102之間不會產 固定侧模仁201與可動侧模仁3〇1合模，第一 狀臺階202、304的頂面將光圈1〇2夾持在中間，且這兩^頂 :的直控都小於光圈1()2的外徑，使得光圈撤的—部分露 =卜模仁固定在外部，且與__仁咖、可細模仁斯In order to prevent the diaphragm 102 from falling off, an anti-drop structure is provided around the first conical step 2〇2 and around the diaphragm fixing post 203. The fall-off prevention structure may be, for example, a suction groove 204 provided around the aperture fixing post 203. A plurality of suction holes 2G5 are provided in the suction groove 204, and the suction holes 205 are penetrated to the other side of the fixed side mold 2'1. According to the direction of the arrow shown in FIG. 10, inhaling the other side of the solid (four) mold core 2〇1, the aperture 102 can be fixed, so that the aperture 1〇2 can be prevented from falling off when the mold is closed or by the staff. Touch and fall off. At the same time, the suction holes 205 can also increase the exhaust gas when the mold is clamped. Referring to Figures 11 and 12', the mold of the mirror chamber 1 〇! further includes a movable side mold core 301, and an outer mold core surrounding the fixed side mold core 2〇1 and the movable side mold core 3〇1 (not shown). ). The movable side mold core 301 includes a large-diameter cylindrical portion 3〇2 and a small-diameter cylindrical portion 303, the outer diameter of the large-diameter cylindrical portion 3〇2 being the same as the outer diameter of the fixed-side mold core 201; and the small-diameter portion 3 The shape and length of the crucible 3 are adapted to the inner cavity 1〇8 of the mirror chamber 101 for placing the optical lens. On the small diameter portion 303 facing the fixed side mold 201, a second conical step 3?4 is provided, which is adapted to the shape of the second chamfer 105 of the mirror chamber 101. On the front end face of the second conical step 304, a recess 3〇5 is provided for receiving the diaphragm fixing post 203 of the fixed side mold 201. The depth of the groove 305 is greater than or equal to the aperture solid 8 200949298. When the two are matched, the fixed side mold 201 and the movable side mold core 3〇1 are not clamped with the aperture 102, and the first step 202, 304 is The top surface holds the aperture 1〇2 in the middle, and the direct control of the two tops: is smaller than the outer diameter of the aperture 1 () 2, so that the aperture is removed - part of the dew = Bu Mo Ren is fixed on the outside, and with __ 仁Coffee, fine-grained
=己合。通過射出成型，剌鏡室m，同時將光圈102埋 入鏡室101，使兩者接合成爲一個整體。 本毛明中’通過埋人射㈣成形方法，縮小前光圈斷面尺 寸，减少或消除了因前光圈斷面的反射而産生的雜散光現象。 由於則光目斷面尺寸縮小，因此增加了光學組件在鏡室中所占 用的玉間’齡了鏡頭的健距。在鏡室的模仁上設置防脫落 結構，可避免光圈在鏡室射出成型時掉落。 【圖式簡單說明】= already. By injection molding, the mirror chamber m is simultaneously buried in the mirror chamber 101, and the two are joined together as a whole. In the present invention, the size of the front aperture section is reduced by the method of burying the human (four) forming method, and the stray light phenomenon caused by the reflection of the front aperture section is reduced or eliminated. Since the size of the light section is reduced, the distance between the jade and the lens of the optical component occupied by the optical component is increased. An anti-drop structure is provided on the mold core of the mirror chamber to prevent the aperture from falling during the injection molding of the mirror chamber. [Simple description of the map]
定柱203的長度，這樣， 生縫隙。 下面將結合附圖及實施例對本新型舰一步說明，附圖中： 圖1是現有技術中前光圈式鏡頭的鏡室的剖視圖； 圖2是現有技術t前細錢獅鏡㈣截面圖； 圖3是圖2的局部放大圖； 圖4是本發明中前光圈式鏡頭的鏡室的立體圖； 圖5疋本發明的前光圈式鏡頭的鏡室的剖視圖； 圖6是本發明的前光圈式鏡頭的鏡室的截面圖； 圖7是圖6的局部放大圖； 圖8是本發明中鏡室模具的固定侧模仁的立體圖； 圖9是將光圈固定在固定側模仁上的示意圖； 9 200949298 圖10是圖9中固定側模仁的剖視圖； 圖11是鏡錢具咖定_ 圖； 勒切枳仁相互配合的示意 圖12是圖π的剖視圖。 【主要元件符號說明】 Ο 鏡室一101 光圈一102 凸環狀前部一 103 第一倒角一 104 第二倒角一105 圓筒狀後部一 107 固定侧模仁一201 第一圓錐狀臺階一 202 光圈固定柱一 203 吸槽一204 吸氣孔一205 可動側模仁—301 大直徑柱狀部分一 302 小直徑柱狀部分一 303 第二圓錐狀臺階一304 凹槽一305 ❹ 10The length of the column 203 is fixed such that a gap is formed. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a mirror chamber of a front aperture lens according to the prior art; FIG. 2 is a cross-sectional view of a prior art front lion mirror (four); 3 is a partial enlarged view of FIG. 2; FIG. 4 is a perspective view of a mirror chamber of a front aperture type lens of the present invention; FIG. 5 is a cross-sectional view of a mirror chamber of a front aperture type lens of the present invention; Figure 7 is a partial enlarged view of Figure 6; Figure 8 is a perspective view of the fixed side mold of the mirror mold of the present invention; Figure 9 is a schematic view of the aperture fixed on the fixed side mold; 9 200949298 Fig. 10 is a cross-sectional view of the fixed side mold core of Fig. 9; Fig. 11 is a mirror view of Fig. 9; Fig. 12 is a cross-sectional view of Fig. π. [Main component symbol description] 镜 Mirror room 101 aperture A 102 convex ring front part 103 first chamfer one 104 second chamfering one 105 cylindrical rear part 107 fixed side mold one 201 first conical step A 202 aperture fixed column - 203 suction slot - 204 suction hole - 205 movable side mold - 301 large diameter cylindrical portion - 302 small diameter cylindrical portion - 303 second conical step - 304 groove - 305 ❹ 10