1322925 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種降低雜散光功能之鏡頭模組。 【先前技術】 隨著多媒體技術之發展’數位相機'數位攝影機等數位影像產品已被 人們廣泛應用，具有廣大之市場需求。數位影像產品於成像過程中，雜散 光導致之炫光及鬼影會影響成像品質，造成產品不良率上昇。通常，為減 少雜散光導致之炫光及鬼影’於鏡頭前增加一蓋體，請參見第一圖，其係 利用蓋體100來減少雜散光，其中，A為入射光角度，T為該蓋體1〇〇之厚 度，B為鏡頭半視角，D為光圈開孔直徑大小，由數學公式得， A=arctan[(D+T*tanB)/T]，取 D=l.5mm，B=3〇。’ 則得到如第二圖所示之曲 殘。 由第二圖可知，當T=5mm時，超過40。以上之入射光都會被蓋體1〇〇 阻擋’因而達到有效消除雜散光之目的；另，T愈大，則蓋體阻撞雜散 光之能力愈強。惟，T厚度過大，即蓋體厚度愈厚，其減低雜散光進入鏡 頭模組之效果愈好，但對於應用於行動電話等便攜式電子裝置之相機鏡頭 模組，因行動電話内之空間有限，如果應用傳統之數位相機上蓋結構，往 往會文空間之限制，不能滿足行動電話日益輕薄之發展。為了滿足行動電 話之厚度要求，數位相機上蓋往往做得很薄，因此就有更多之雜散光進入 光學透鏡模組’從而降低了成像品質。 有鑒于此，提供一種體積較小，且能有效降低雜散光之鏡頭模組實為 必要。 【發明内容】 本發明之目的在於提供一種體積較小，且能有效降低雜散光之透鏡模 組。 一種降低雜散光功能之鏡頭模組，包括：一鏡筒，該鏡筒内部容置 透鏡組；，包括-容置腔與絲’該顧設置於容置動並與底板 内側固疋連接’-上蓋’該上蓋底部設有開σ，該開口與鏡筒可滑動配合； -袋子’其設於上蓋内部，該袋子具有_通道，該袋子通道與鏡筒相對， 袋子内裝有液體，該袋子可發生形變。 本發明降低雜散光功能之鏡頭模組通過於上蓋内設置可發生形變之袋 U厶厶:i 使2 蓋與鏡筒相互位置加大，即相當於上蓋厚度增大’不使 ι·Μ夕' 兄筒相互位置變小，從而即可减_散光，又可達到縮放 rt?」，㈣該透賴組具有較好之成像品質。 L實施方式】 ⑽二第二圖及第四圖’本發明降健散光功能之鏡頭模組，該降低 1 、犯之鏡頭杈組包括一鏡筒1〇，鏡筒10頂部兩側設有上蓋20 ,上 盘可目對鏡筒1〇上下滑動，上蓋2〇和鏡筒1〇枚容於殼體5〇内。 鏡筒1〇為圓桶狀，底部固定於殼體％底部内側上，該鏡筒1〇内部裝 有透鏡組12 ’該透鏡組12由複數鏡片組成，該複數鏡片用以將所拍攝之影 像匯聚成像。 1〇頂部設有第—玻璃板14，用以保護透鏡組12，防止 其，面被刮傷’此外’亦可於該第—玻璃板14至少—表面上錢—層紅外遽 光薄膜’以便過濾光線中之紅外線。1322925 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a lens module for reducing stray light. [Prior Art] With the development of multimedia technology, digital image products such as digital cameras and digital cameras have been widely used and have a large market demand. In the imaging process of digital imaging products, glare and ghosting caused by stray light will affect the image quality, resulting in an increase in product defect rate. Generally, in order to reduce the glare and ghosting caused by stray light, a cover is added in front of the lens. Referring to the first figure, the cover 100 is used to reduce stray light, where A is the incident light angle, and T is the The thickness of the cover 1〇〇, B is the lens half angle of view, D is the diameter of the aperture opening, obtained by the mathematical formula, A=arctan[(D+T*tanB)/T], taking D=l.5mm, B =3〇. ‘There is a distorted figure as shown in the second figure. As can be seen from the second figure, when T = 5 mm, it exceeds 40. The above incident light is blocked by the cover 1', thus achieving the purpose of effectively eliminating stray light; in addition, the larger the T, the stronger the ability of the cover to block stray light. However, if the thickness of the T is too large, that is, the thicker the thickness of the cover, the better the effect of reducing the stray light entering the lens module is. However, for the camera lens module applied to a portable electronic device such as a mobile phone, the space in the mobile phone is limited. If the traditional digital camera cover structure is applied, the limitation of the text space is often limited, which cannot meet the increasingly thin and light development of mobile phones. In order to meet the thickness requirements of mobile phones, digital camera covers are often made thin, so more stray light enters the optical lens module', thereby reducing image quality. In view of this, it is necessary to provide a lens module that is small in size and can effectively reduce stray light. SUMMARY OF THE INVENTION An object of the present invention is to provide a lens module which is small in size and which can effectively reduce stray light. A lens module for reducing stray light function, comprising: a lens barrel, the lens barrel accommodating a lens group; and comprising: a accommodating cavity and a wire 。 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置 设置The upper cover 'the bottom of the upper cover is provided with an opening σ, the opening is slidably fitted with the lens barrel; the bag' is disposed inside the upper cover, the bag has a channel, the bag channel is opposite to the lens barrel, and the bag is filled with liquid, the bag Deformation can occur. The lens module for reducing the stray light function of the present invention is provided with a bag U 厶厶 in the upper cover: i makes the position of the cover and the lens barrel increase, that is, the thickness of the upper cover is increased. 'The brothers' position becomes smaller, so that _ astigmatism can be reduced, and the scaling rt can be achieved." (4) The dialysis group has better imaging quality. L Embodiments (10) Two second and fourth figures 'The lens module of the oligo astigmatism function of the present invention, the reduced lens 杈 group includes a lens barrel 1 〇, and the top of the lens barrel 10 is provided with a top cover on both sides 20, the upper plate can be seen to slide the lens barrel 1 〇 up and down, the upper cover 2 〇 and the lens barrel 1 〇 are contained in the casing 5 。. The lens barrel 1 is in the shape of a barrel, and the bottom portion is fixed on the inner side of the bottom portion of the housing. The lens barrel 1 is internally provided with a lens group 12'. The lens group 12 is composed of a plurality of lenses for capturing the image taken. Convergence imaging. A top glass plate 14 is provided on the top of the cymbal to protect the lens group 12 from being scratched. In addition, at least the surface of the first glass plate 14 may be a layer of infrared illuminating film. Filter the infrared light in the light.
影像感測元件30設置於透鏡組12下方，同時固定於殼體5〇内側底部 上該〜像感測元件30可為電荷耗合器(charge Coupled Device，下稱 CCD)或者補充性氧化金屬半導體（Complementary Metal-Oxide Semiconductor，下稱CMOS)，其將透鏡組12所成之光訊號轉變為電訊號。 上蓋20設於鏡筒1〇頂部兩側，用以阻擋更多之雜散光進入鏡筒1〇内部。 該上蓋20頂部蓋有第二玻璃板16，其底部設有圓形開口 24，該開口 ％與 鏡筒10可滑動配合，上蓋20兩側壁上設有兩凸塊22。 、The image sensing component 30 is disposed under the lens group 12 and is fixed on the inner bottom of the casing 5 . The image sensing component 30 can be a charge coupled device (hereinafter referred to as CCD) or a complementary metal oxide semiconductor. (Complementary Metal-Oxide Semiconductor, hereinafter referred to as CMOS), which converts the optical signal formed by the lens group 12 into an electrical signal. The upper cover 20 is disposed on both sides of the top of the lens barrel 1 to block more stray light from entering the inside of the lens barrel 1 . The top of the upper cover 20 is covered with a second glass plate 16 and has a circular opening 24 at the bottom thereof. The opening % is slidably engaged with the lens barrel 10, and two protrusions 22 are disposed on the two side walls of the upper cover 20. ,
袋子26為圓環狀，頂部到底部之間設有倒圓台形狀之通道27。該袋子 26為軟性袋子，可發生形變，其材質為黑色塑膠。袋子26表面具不規則表 面，可使光進行有效散射。該袋子26裝於上蓋20内部，通道27與鏡筒1〇 相對，並使通道27之軸線與鏡筒10之轴線相重合。該袋子26頂部固定於 第二玻璃板16上，側壁固定於上蓋20之側壁上，底部固定於上蓋2〇之底 壁上’其接觸處藉由點膠固定。袋子26内部裝有液體28，該液趙28具有 流動性’其可為水或其他環保液體。因液體28具流動性，因此可使袋子％ 在兩種狀態下發生形變，同時也使液體28充滿整個袋子26。 上蓋20底部兩側設有彈簧40，彈簧4〇 —端與上蓋2〇底部相連另 6 1322925 端與殼體50内側底部相連。 殼體50包括一容置腔51，該容置腔51外側壁上設有滑槽52，該滑槽 52為L开>，其形狀參見第五圖，該滑槽52與凸塊22相配合。該殼體5〇 還包括一底板54，該底板54位於殼體50底部内側上，其為與殼體5〇相分 離之印刷電路板，亦可為與殼體50 一體成形之印刷電路板。底板54與鏡 筒10底部固定連接。 裝配時，先將透鏡組14裝於鏡筒1〇内，調好焦後，通過點膠固定。 袋子26充滿液體28且密封後，將袋子26放於上蓋2〇内並與上蓋2〇藉由 點膠固定。將鏡筒10套裝於上蓋2〇之開口 Μ處，彈簧4〇 一端固定於上 蓋20兩側之底部，影像感測元件3〇固定於殼體5〇内側底壁上。再將鏡筒 10、上蓋20置於殼體50内，凸塊22配合於殼體52之滑槽52内，同時將 彈簧4〇之另一端連接於殼體50内側之底壁上，從而完成其裝配過程。 未使用時，凸塊22卡於滑槽52底部，此時彈簧40受壓，請參見第四 圖與第六圖。使用時，手指可伸人滑槽52内，撥動 L形槽52底部滑出，使上蓋2〇在彈篑4〇之作用下，向上移動，^塊= =滑槽52底部時，上蓋2〇停止向上運動。上蓋2〇向上運動中，其鏡筒 生=上ί目2〇楚向下移動，此時上蓋2〇内部之液體28於流動性作用下，發 體二圖，上蓋2〇與鏡筒1〇軸向相對位置加大，從而讓該液 卡ίΐΓϊίΊ的。完成拍舰程後’再將凸塊22向下撥動，凸塊22 體2'8月形狀發^上堪向下移動’上蓋2〇同鏡筒1〇之相對距離變近，液 體28七狀發生改變’從而達到縮小鏡賴组體積之目的。 理解上蓋20與殼體5〇之間設有彈簧4〇亦可採用其他彈性裝置， ’亡盖20與鏡筒10之間可設置螺紋連接方式通過旋轉上蓋 處上Ϊ二與陶目互位置_，亦可於上蓋2°與鏡筒10接觸 鏡筒^數之縣面，在—定侧力下，改變上蓋20與 上發明符合發明專利要件’奚依法提出專利申請。惟，以 案發明_狀物㈣錢化，_含於町%^^内依本 1322925 【圖式簡單說明】 第一圖係習知降低雜散光功能之蓋體結構圖； 第二圖係習知降低雜散光功能之蓋體厚度與鏡頭半視角關係曲綫圖 第三圖係本發明降低雜散光功能之鏡頭模組使用狀態圖； 第四圖係本發明降低雜散光功能之鏡頭模組未使用狀態圖； ，五圖係本發明降低雜散光功能之鏡頭模組使用時凸塊位置示意圖 第六圖係本發明降低雜散光功能之鏡頭模組關閉時凸塊位置示意圖 【主要元件符號說明】 透鏡組 12 凸塊 22 袋子 26 通道 27 第一玻璃板 14 殼體 50 底板 54 影像感測元件 30 鏡筒 10 上蓋 20 開口 24 液體 28 彈簧 40 第二玻璃板 16 滑槽 52 容置腔 51The bag 26 is annular and has a truncated cone shaped passage 27 between the top and the bottom. The bag 26 is a soft bag that can be deformed and is made of black plastic. The surface of the bag 26 has an irregular surface that allows light to be effectively scattered. The bag 26 is mounted inside the upper cover 20, and the passage 27 is opposed to the barrel 1 ,, and the axis of the passage 27 coincides with the axis of the barrel 10. The top of the bag 26 is fixed to the second glass plate 16, the side wall is fixed to the side wall of the upper cover 20, and the bottom portion is fixed to the bottom wall of the upper cover 2'. The contact portion is fixed by dispensing. The bag 26 is internally filled with a liquid 28 which has fluidity 'which may be water or other environmentally friendly liquid. Because of the fluidity of the liquid 28, the bag % can be deformed in two states while also allowing the liquid 28 to fill the entire bag 26. A spring 40 is arranged on both sides of the bottom of the upper cover 20, and the end of the spring 4 is connected to the bottom of the upper cover 2, and the end of the 6 1322925 is connected to the inner bottom of the casing 50. The housing 50 includes a accommodating cavity 51. The outer side wall of the accommodating cavity 51 is provided with a sliding slot 52. The sliding slot 52 is L-opening. The shape of the sliding slot 52 is the same as that of the fifth block. Cooperate. The housing 5A further includes a bottom plate 54 which is located on the inner side of the bottom of the housing 50. It is a printed circuit board separated from the housing 5, and may be a printed circuit board integrally formed with the housing 50. The bottom plate 54 is fixedly coupled to the bottom of the lens barrel 10. When assembling, the lens group 14 is first placed in the lens barrel 1 ,, and after the focus is adjusted, it is fixed by dispensing. After the bag 26 is filled with the liquid 28 and sealed, the bag 26 is placed in the upper cover 2 and secured to the upper cover 2 by dispensing. The lens barrel 10 is placed on the opening of the upper cover 2,, and one end of the spring 4〇 is fixed to the bottom of both sides of the upper cover 20, and the image sensing element 3 is fixed to the inner bottom wall of the casing 5〇. The lens barrel 10 and the upper cover 20 are placed in the housing 50. The protrusions 22 are fitted into the sliding slots 52 of the housing 52, and the other end of the spring 4 is connected to the bottom wall of the inner side of the housing 50. Its assembly process. When not in use, the bump 22 is caught at the bottom of the chute 52, and the spring 40 is pressed at this time, see the fourth and sixth figures. When in use, the finger can extend into the sliding slot 52, and slide the bottom of the L-shaped slot 52 to slide out, so that the upper cover 2 is moved upward by the action of the magazine 4〇, and the upper cover 2 is when the bottom of the sliding slot 52 is closed. 〇 Stop moving up. When the upper cover 2〇 moves upwards, the tube tube is produced. The upper tube 2 is moved downward. At this time, the liquid 28 inside the upper cover 2 is under the action of fluidity, the second body of the body, the upper cover 2〇 and the lens barrel 1〇 The axial relative position is increased to allow the liquid to be licked. After the completion of the ship's journey, the bump 22 is then moved downwards. The shape of the bump 22 is 2'8. The shape of the cover is up and down. The upper cover 2 is close to the lens barrel. The liquid is 28 The shape changes "to achieve the purpose of reducing the size of the mirror group. It is understood that a spring 4 is disposed between the upper cover 20 and the casing 5〇, and other elastic means may be used. A threaded connection between the dead cover 20 and the lens barrel 10 may be provided by rotating the upper cover at the upper position of the second and the ceramic eye. Alternatively, the upper cover 2° and the lens barrel 10 may be in contact with the county face of the lens barrel, and under the fixed side force, the upper cover 20 and the upper invention comply with the invention patent requirement '奚 patent application. However, the case of the invention _ _ (4) money, _ contained in the town% ^ ^ inside according to this 1322925 [simple description of the diagram] The first picture is the conventional cover structure to reduce the stray light function; The third embodiment of the lens module for reducing the stray light function of the present invention is the use of the lens module for reducing stray light function. The fourth figure is that the lens module for reducing the stray light function of the present invention is not used. FIG. 6 is a schematic view showing the position of the bump when the lens module for reducing the stray light function is used. The sixth figure is a schematic diagram of the position of the bump when the lens module for reducing the stray light function is closed. [Main component symbol description] Lens Group 12 Bumps 22 Bags 26 Channels 27 First Glass Plate 14 Housing 50 Base Plate 54 Image Sensing Element 30 Lens Tube 10 Upper Cover 20 Opening 24 Liquid 28 Spring 40 Second Glass Plate 16 Chute 52 Housing 51