1351868 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種數位攝像模組鏡頭調整方法，尤其係關於一種用於調 整鏡頭光軸與影像感測器之垂直對正之數位攝像模組鏡頭調整方法。 【先前技術】 隨著數位儀猶之獨發展，攝賴崎位域己被人們廣泛應用特 別近年來行動與PM(個人她助理）等攜帶⑼子裝置也在快速向高 性能與多功能化方向發展，數位攝像模組與該等攜帶武電子裝置之結合已 成為發展移鮮雜技術之關鍵’與該攜帶武電子裝置結合之攝像模组體 積較小且結構簡單，其鏡頭之製造及維修裝配過程中容易受到零組件製造 及裝配誤差之，產生攝賴組之·^測賴鏡驗之雜不垂直現 象，即鏡頭組具有-定傾斜之情况。該情況會導致影像感測器所接收之參 像清晰度不解，引起景彡像-罐清峨利亮，而另—峨翻，從 響影像拍攝品質。例心中國公告號為246_之專利公開了一種攝^ 組，其利聽座與電路板之狀雜元件及螺_行纖之過財，由於 不同彈性元狀受力不均，及彈性元件之變形均會導致影像感·之傾斜。 習知之調整技術中具有改善該情況之構造，例如：中國公告號為獅樹 =專=公開了-種攝像模組之感測器定位裝置，較位裝置係於鏡頭組之 土座谷置室内設置定位塊’從㈣感❹彳器定位並使其保持水平，該 受到零組件製造精度之限制而影_整精度，例如：定位塊之長了 ^精雜制誠·簡水平n結歡增加攝賴組之機=複 度’從而增加製造難度及成本。 雜私 y ff於此’提供—種不增加攝像餘機構複雜度且調整精度高之攝像 板組調！方法，麟調整影像感·與鏡職之絲垂直度，實為必要。 【發明内容】 本發•目的秘提供—攝賴_技法，該紋可不增加攝 機構複雜度，且可精麵輕影像感咸·與鏡頭之絲之垂直戶。、、，’ 為了貫現本發明之目的，本發明提供_麵像模組調整方法其包括 5 1351868 以下步驟·提供-具有U耳帶波環圖樣之測觸；使職調整之攝像模組 拍攝該特定職圖；分析拍攝的影像之纽圖樣的分佈，該疊紋圖樣的乂析 包括影像感測器之數個區域，對各個區域進行比較分析，從而推斷出ς 感測器之傾斜狀況；採取相應之措施調整影像感測器與鏡頭組之光軸: 直度’使該影像感測器與該光軸垂直。 、、 " 、較習知之數位相機鏡賴組調整方法，本方法係採取一種光學調 法，不增加攝像模組之機構複雜度，且可精確的調整影像感測器與鏡ς 轴之垂直度。 〜 【實施方式】1351868 IX. Description of the Invention: [Technical Field] The present invention relates to a lens adjustment method for a digital camera module, and more particularly to a digital camera module lens for adjusting a vertical alignment of a lens optical axis and an image sensor Adjustment method. [Prior Art] With the development of the digital instrument, the Laiqi area has been widely used. In recent years, the mobile device (Personal Her Assistant) and other portable (9) sub-devices are also rapidly moving toward high performance and multi-function. Development, the combination of digital camera modules and these portable electronic devices has become the key to the development of hybrid technology. The camera module combined with the portable electronic device is small in size and simple in structure, and its lens manufacturing and maintenance assembly. In the process, it is easy to be subject to the manufacturing and assembly errors of the components, which results in the mismatching phenomenon of the detection group, that is, the lens group has a certain tilt. In this case, the resolution of the image received by the image sensor is not solved, causing the image of the scene to be clear, and the other is to turn over, and the quality of the image is taken from the sound image. The patent of China Bulletin No. 246_ discloses a camera group, which is advantageous for the miscellaneous components and the snails of the circuit board, because of the different elastic elements, and the elastic components. The deformation will cause the image to be tilted. The conventional adjustment technique has a structure for improving the situation, for example, the Chinese bulletin number is lion tree=special = the sensor positioning device of the camera module is disclosed, and the bit position device is located in the earthen valley of the lens group. Set the positioning block to position from the (four) sensor and keep it level, which is limited by the manufacturing precision of the component. The precision of the positioning block is, for example, the length of the positioning block. The machine of the photo group = re-degrees, thereby increasing manufacturing difficulty and cost. Miscellaneous y ff ’ This provides a camera set that does not increase the complexity of the camera and adjusts the accuracy of the camera! Method, Lin adjusts the sense of image and the perpendicularity of the wire of the mirror, it is necessary. [Summary of the Invention] The present invention provides a secret-recovering technique, which can increase the complexity of the camera, and can be used for the smoothness of the image and the verticalness of the lens. In order to achieve the object of the present invention, the present invention provides a method for adjusting an image module, which includes 5 1351868, the following steps, providing a touch with a U-band wave ring pattern; The specific job map; analyzing the distribution of the image of the captured image, the analysis of the overlay pattern includes several regions of the image sensor, and comparing and analyzing each region to infer the tilt state of the sensor; Take appropriate measures to adjust the optical axis of the image sensor and lens group: Straightness 'make the image sensor perpendicular to the optical axis. ,, ", the more traditional digital camera mirror adjustment method, this method adopts an optical adjustment method, does not increase the complexity of the camera module, and can accurately adjust the vertical of the image sensor and the mirror axis degree. ~ [Embodiment]
請參照第-圖與第二_示，本發贿提供之攝像模組調整方法係指— 種光學調整方法’本發明所應用之原理係兩組空間鮮相當之透明 (grating)或格子（grid)傾斜某一角度重疊後可形成—種圖案，叫做曼紋 (moire) 〇 " 本發明之攝像模組鏡頭垂直度調整方法包括以下步驟： 請參照第-圖所示’提供-待調焦之攝像模組2〇，該攝像模细2〇包含 鏡頭20卜鏡座202、感測器203、及基板204 ;該鏡頭2〇1容置於鏡座2〇2， 該鏡頭201與感測器203之間距可調，入射光線經鏡頭2〇1匯聚後可聚焦 於感測203上，該感測器2G3將光訊號轉換為電訊號，從而完成影Please refer to the first and second figures. The camera module adjustment method provided by this bribe refers to the optical adjustment method. The principle applied by the present invention is two sets of space-like grating or grid (grid). The tilting of an angle can form a pattern, called a moire. The lens vertical adjustment method of the camera module of the present invention includes the following steps: Please refer to the figure - providing - to be adjusted The camera module 2A, the camera module 2 includes a lens 20 mirror holder 202, a sensor 203, and a substrate 204; the lens 2〇1 is received in the lens holder 2〇2, the lens 201 and the sensing The distance between the devices 203 is adjustable, and the incident light is concentrated by the lens 2〇1 to focus on the sensing 203. The sensor 2G3 converts the optical signal into an electrical signal, thereby completing the image.
取。該感測器203由複數感光像素點呈週期性排列，從而形成感光陣列 (array)，該感測器係可為CCD或CMOS。 第二圖提供-測試系統10，該測試系統包括-測試圖u、一監控裂置 12及-測試板13。該測試圖11係具有數個驗耳帶波環圖樣^ zone plate)。该測試圖之圖形如第二圖所示，該圖形具有以下特點：所有 間隔圓環面積均等於中心圓面積’因此，愈向外側環與環問之間隔距離越 小。該測試板13上設有相關電路及傳輸線14，可將感測器所糊取之測試 圖11之影像訊號進行相應轉換並傳送至監控裝置12中’該監控裝置12可 以係-具有侧程式之電腦’其將触之影像訊舰行分析，比較各區域 之4紋_是封目似，齡此數轉料帶波_樣經麵2G1成像於感 6 1351868 % 之β ί广成豐紋圖樣’於監控裝置12來判斷感測器203 ·鏡頭201 之先軸疋否達到最佳垂直度。 魏=時=?像歡2〇電性裝配於測試板13上，將測試板13上之傳 二試圖ιι、Γ工.'置12電性連接，調整測試圖11與測試板13之位置，使 經㈣以2取板13正前^且二者高度與距軸當，從而使測試圖11 以後產生之影像大彳、適合觀察，鏡組2G正對測試圖11， 薄以最佳肖度射至透鏡。由於菲埋耳帶波環經由鏡頭201於感測 i 實像，且1瞒帶波環愈向外側環與環問之間距越小，根 點大二Μ生之原理，當該環與環間之間隔距離與感測器203上之像素 疊紋圖像二而=與第四圖所示之疊紋現象，該 易於^諸各區域疊紋圖樣之相似程度判斷成像之清晰度，另，眾所週 ‘頭光軸與感測器之垂直度不佳會產生像面邊緣影像清晰度下 Ϊ二二產生於圖像四週，若能夠清晰觀察到該疊紋現象，且各 致，則能夠確定鏡頭光轴與感測器之垂直度，從而可以確 且裝位置。因此，邊觀察該監控裝置12中之經鏡頭 201域之衫像邊調整鏡座202與基板2〇4之相對位 , w 2〇2 2〇4；«^2 ^感ΪΪΪίΓ化的程序，如第五圖之測試程序即可完成調整鏡頭光 ^方法中之菲科帶波環疏密狀況仰、據鏡頭2()1之不同進行更換， =要之條件係要保證該帶波環於❹m上之成像之外側環歸間之間距 ^消器上之像素點大小相當，㈣可產生便於分析之纽現象： 右感測器之解析度較高，麟帶波環之外側環與環問之間距應較小。 可以理解，該測試圖U上之圖形亦可為轄射光柵(咖此呢u㈣， 栅(隨咖呢⑽1⑹等其他可與感測器疊加產生複雜疊紋圖 、綜上所述，本發明符合發明專利要件，轰依法提出專利申請 所述者僅為本創作之較佳實施例，本創作之範圍並不以上述實施例為限， 7 1351868 舉凡熟習本案技藝之人士援依本創作之精神所作之等校修飾或變化，皆應 涵蓋於以下申請專利範圍内。 1351868 【圖式簡單說明】 第一圖係攝像模組之部件示意圖 第二圖係本發明攝像模組的鏡頭調整方法之測試系統之示意圖 第三圖係菲涅耳帶波環測試圖之示意圖 第四圖係菲涅耳帶波環測試圖被拍攝之圖像與感測器之像素點疊加產生之 疊紋現象之圖形 第五圖係本發明攝像模組鏡頭調整方法之測試程序之示意圖 【主要元件符號說明】 測試系統 10 測試圖 11 監控裝置 12 測試板 13 傳輸線 14 攝像模組 20 鏡頭 201 鏡座 202 感測器 203 基板 204take. The sensor 203 is periodically arranged by a plurality of photosensitive pixels to form a photosensitive array, which may be a CCD or a CMOS. The second figure provides a test system 10 that includes a test pattern u, a monitoring split 12 and a test board 13. The test chart 11 has a plurality of zone plate patterns. The graph of the test chart is as shown in the second figure. The pattern has the following characteristics: all of the spacer rings have an area equal to the center circle area. Therefore, the distance between the outer ring and the ring is smaller. The test board 13 is provided with a related circuit and a transmission line 14 for converting and converting the image signal of the test chart 11 obtained by the sensor to the monitoring device 12. The monitoring device 12 can be equipped with a side program. The computer will analyze the image of the ship and compare the four patterns of each area. It is like a seal. The age of the transfer material is wave-like. The 2G1 image is imaged on the 6 351,868% of the β ί Guangcheng pattern. The monitoring device 12 determines whether the first axis of the sensor 203 and the lens 201 has reached the optimal verticality. Wei = hour =? Like Huan 2 〇 electrically assembled on the test board 13, the test board 13 on the second try to ιι, Γ work. '12 electrical connection, adjust the position of test chart 11 and test board 13, Let the (4) take the front and back of the board 13 and the height of the two and the distance axis, so that the image produced after the test chart 11 is large and suitable for observation. The mirror group 2G is facing the test chart 11, and the thinness is optimal. Shoot at the lens. Since the Philippine buried earband wave ring senses the i-real image through the lens 201, and the smaller the distance between the outer ring and the ring-shaped ring of the 1瞒-banded wave ring, the principle of the root point is the second generation, when the ring and the ring are The separation distance and the pixel overlay image on the sensor 203 are the same as the moiré phenomenon shown in the fourth figure, which is easy to determine the degree of similarity of the moiré pattern of each region, and the other is to determine the sharpness of the image. The poor verticality of the head's optical axis and the sensor will produce image edge image clarity. The image is generated around the image. If the double-grain phenomenon can be clearly observed, and the lens is determined, the lens can be determined. The perpendicularity of the optical axis to the sensor, so that the position can be confirmed. Therefore, while observing the lens image of the lens 201 in the monitoring device 12, the relative position of the lens holder 202 and the substrate 2〇4 is adjusted, w 2〇2 2〇4; «^2 ^ sensing the program, such as The test procedure of the fifth figure can complete the adjustment of the lens light ^ method in the method of the Fico band with the wave ring density, according to the lens 2 () 1 different replacement, = the condition is to ensure that the band ring in the ❹ m The imaging of the outer side of the upper side of the imaging is equivalent to the size of the pixel on the eraser. (4) The phenomenon of easy analysis can be generated: The resolution of the right sensor is higher, and the side ring and the outer ring of the ring with the wave ring The spacing should be small. It can be understood that the pattern on the test chart U can also be a ray-handling grating (the other is a quad (4), the grid (with the coffee (10) 1 (6) and the like can be combined with the sensor to generate a complex overlay pattern, in summary, the present invention is in accordance with The invention patent claim, the patent application mentioned in the law is only the preferred embodiment of this creation, the scope of this creation is not limited to the above examples, 7 1351868 for those who are familiar with the skill of the case, according to the spirit of this creation The modification or change of the school shall be covered by the following patent application. 1351868 [Simple description of the diagram] The first diagram is a schematic diagram of the components of the camera module. The second diagram is the test system of the lens adjustment method of the camera module of the present invention. The third diagram is a schematic diagram of the Fresnel zone wave ring test diagram. The fourth diagram is the figure of the Fresnel zone wave ring test diagram. The image of the image taken with the pixel of the sensor is superimposed. Figure is a schematic diagram of the test procedure of the lens adjustment method of the camera module of the present invention. [Main component symbol description] Test system 10 Test chart 11 Monitoring device 12 Test board 13 Transmission line 14 Camera module 20 202 sensor lens 201 of the lens holder 203 of the substrate 204