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TWI274169B - Multi-point focus adjustment detection method for image sensing module and the device thereof - Google Patents

Multi-point focus adjustment detection method for image sensing module and the device thereof Download PDF

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Publication number
TWI274169B
TWI274169B TW94115526A TW94115526A TWI274169B TW I274169 B TWI274169 B TW I274169B TW 94115526 A TW94115526 A TW 94115526A TW 94115526 A TW94115526 A TW 94115526A TW I274169 B TWI274169 B TW I274169B
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target
distance
image
range
module
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TW94115526A
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TW200639419A (en
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Guo-Cheng Wu
Wei-Jou Jiang
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Sysnix Co Ltd
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Abstract

The present invention provides a multi-point focus adjustment detection method for image sensing module and the device thereof, which employs a matching design with overlapped configuration of multiple long-range reticles and short-range reticles. The present invention is associated with a structure of focus adjustment module to generate multiple images at the sensing position of the image sensing module; then, calculating the MTF (modulation transfer function) values for the short-range reticle and multiple long-range reticles; and, rotating the focus adjustment module to change the images and MTF values at the sensing position; when the adjustment makes the subtraction operation of MTF values for the short-range reticle and multiple long-range reticles more approaching zero, and the MTF at periphery is satisfied with the specification, it should be the optimized imaging position for the lens, and the identification of the optimized long-range and short-range targets.

Description

1274169 —1274169 —

五、發明說明(1) 【發明所屬之技術領域】 本發明之-種影像感測模組多點調 置,特別是指-種利用多數遠、近距離標:法及其裝 與MTF值運算,結合旋轉調焦楔纟且之調焦動%成多點感測 像感測模組之對焦調整,具有改盖裝置體作’以進行影 焦操作及獲得更精準的對焦成像I 、 M、輕盈,易調 【先前技術】 CMOS影像感測元件 疋 種利用光電相關社^V. INSTRUCTION DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The image sensing module of the present invention is multi-point-adjusted, in particular, the use of most far-distance and close-range labels: the method and its installation and MTF value calculation In combination with the rotating focus wedge and the focus adjustment is the focus adjustment of the multi-point sensing image sensing module, with the cover device body for performing the focus operation and obtaining more accurate focus imaging I, M, Lightweight, easy to adjust [Prior Art] CMOS image sensing components

標準半導體元件製程製作之影像感測元件,],術原理於 的半導體設備生產,同時具有高度系統整 '::用現有 ::晶片整合製作’並已被大量應用於包括數:备能朝 像電活、PC Camera、手機、pDA、玩具、 七、影 全臣七批楚;^ Λ η /、 日、、、文辨識器、安 王凰控專,而與發展較久之CCD影像感測元女 今影像科技發展之主流。 成為現 因而 像感 感測 正確 測元 是否 相關 生之 像品 可隨半導 測元件, ’更顯其 的影像、 件經配上 能依初始 影像參數 成像對焦 質,因此 影像感 體製程 但是, 重要的 影像成 鏡頭為 設計之 感測影 影響等 ,影像 測兀件是 技術的精 由於CMOS 是CMOS影 像對焦效 模組封裝 例如像數 像,以及 ,而能獲 感測元件 標準半 進而製 影像感 像感測 果品質 以應用 、焦距 封裝時 得與初 或其模 造品質 測元件 元件在 等,加 配置於 、影像 内部空 始設計 組於出 件製程元件, 更佳之CMOS影 的功能是影像 於其可否感測 上CMOS影像感 上述產品時, 範圍偏移度等 間設計考量產 相同之感測影 廠前均需經過Standard semiconductor device manufacturing process image sensing components,], the principle of semiconductor device production, while having a high degree of system integrity:: using existing:: wafer integration production 'and has been widely used to include the number: Electric activity, PC Camera, mobile phone, pDA, toy, seven, shadow full court seven batches of Chu; ^ Λ η /, Japanese,,, and the text recognizer, An Wanghuang control, and the development of CCD image sensing elements The mainstream of the development of women's imaging technology. As a result, the image sensor can be used with the semi-conducting component, and the image and the piece can be imaged according to the initial image parameters. The important image into the lens is the influence of the design, and the image is the technical precision. Because the CMOS is the CMOS image focusing module package, for example, the image is digital, and the sensor component can be obtained. Sensing sensor quality is applied in the application, focal length packaging, and the initial or its molded quality component components, etc., and is placed in the image, the internal design group is in the production process component, and the better CMOS shadow function is the image Whether it can sense the CMOS image sense of the above products, the range shift degree and other design considerations must be passed before the same sensory studio

1274169 五、發明說明(2) 調焦檢測進 目前應 要係影像感 合單一距離 同於初始設 經計算成像 元件或其模 佳成像焦距 該提供影像 I體積大,也 之笨重與不 訊進行調整 以因應由新 調校。 行調整。 用於影像感測元件或其模組之調焦檢測時,主 1元件或其模組電性連結於一基板模組上,配 標板,如粗細不同之光栅條紋、文字等,以相 計之成像焦距於影像感測元件中心位置成像, 之MTF值後,利用基板模組與其上之影像感測 、、且,於凋整並運算μ T F值為最大時,可獲得最 之調整結果。但上述之調焦裝置與方法,由於 感測元件或其模組電性連結之基板模組,設備 產生調焦操作上必需移動整個基板模组,產生 易調焦操作,且僅透過單一距離標板之焦距資 ,於對焦成像的精準度應可再為提高之必要,、 製程製作之更精進品質之影像感測元件之焦距 【發明内容】 ηΐ發:t主要目的’在於解決上述傳統缺失,避免缺 失存在二本电明利用由一近距離標板與多數遠距離 、 或者一通距離標板與多數近距標板之重聂配 j , 感測與MTF值運算,結合旋轉調焦模組之3'調焦動形成、多點 行影像感測模組之對焦調整,具有改善裝置體以進 易§周焦操作及獲得更精準的對焦成像。 、工盈, 為達上述之目 測方法及其裝置, 數遠距離標板,或 的,本發明之影像感 主要係由重疊配置的 者一遠距離標板與多 測模組多點調焦檢 一近距離標板與多 數近距離標板之重1274169 V. INSTRUCTIONS (2) The focus detection is currently required to be image-sensing at a single distance as well as the initial set-up imaging element or its model imaging focal length. The image I is provided in a large volume, which is also cumbersome and unadjusted for adjustment. In order to respond to the new adjustment. Line adjustment. When used for focusing detection of an image sensing component or a module thereof, the main component or module thereof is electrically connected to a substrate module, and the calibration plate, such as grating stripes and characters of different thicknesses, The imaging focal length is imaged at the center position of the image sensing element, and after the MTF value, the substrate module and the image sensing thereon are used, and the maximum adjustment result is obtained when the μ TF value is maximized and the μ TF value is maximized. However, in the above-mentioned focusing device and method, due to the substrate module electrically connected to the sensing component or the module thereof, the device needs to move the entire substrate module to produce a focusing operation, and an easy focusing operation is generated, and only a single distance mark is transmitted. The focal length of the plate, the accuracy of the focus imaging should be further improved, and the focal length of the image sensing component of the more advanced quality of the process [Invention] ηΐ发: t main purpose 'is to solve the above-mentioned traditional deficiency, Avoid the absence of two powers using a close distance target and most distances, or a distance marker and most close-range targets, the sensing and MTF value calculation, combined with the rotating focus module 3' focus adjustment, multi-point image sensing module focus adjustment, with improved device body to facilitate the 周 week focus operation and obtain more accurate focus imaging. , the work surplus, in order to achieve the above visual methods and devices, the number of remote targets, or, the image sense of the present invention is mainly by the overlapping configuration of a long distance target and multi-test module multi-point focus detection The weight of a close distance target and most close distance targets

第6頁 1274169 五、發明說明(3) 广ΐ調焦模組構成,能於影像感測模組之感 ;=μ:Λ 成像’再計算各近距離標板與遠距離 ^盥MTF佶,ΐ,再旋轉調焦模組以改變於感測位置之成 MTF、,虽此調整使近距離標板與多數遠距離標板之 士值相^咸運算越接近於零時,以及週邊的㈣值滿足規格 日;二即為該鏡頭成像最佳位置,與最佳遠、近目標識別。 【實施方式】 茲有關本發明之技術内容及詳細說明,現配合圖式說 明如下: I言青參閱第一、二、三圖所示,係本發明之影像感測模 組^點凋焦檢測裝置立體、俯視及側視示意圖。如圖所示 •本毛月之衫像感测模組多點調焦檢測裝置,包括:一基 板1及基板1上設有一近距離標板組2,該近距離標板組 2上承載有一近距離標板3,在基板丨上設有位於近距離 標板組2下方之多數個遠距離標板4,並與前述之近距離 標板3形成上、下重疊配置組態。 孩近=離標板組2,具有一軸桿2 i設於上述基板1 上4軸杯2 1上配置有一基座2 2,該基座2 2上承載 | /近距離標板3,能同步帶動上述近距離標板3於軸桿2 1上、下移動調整位置,並利用定位元件2 3、2 4為調 繁位置後之鎖固定位。 上述近距離標板3是由設置於上述近距離標板組2相 鄰近距離標板3位置之光源模組(圖中未繪示),提供均 勻之光源照射在黑白相間之線條圖案3 1組成,而遠距離Page 6 1274169 V. Invention Description (3) The configuration of the Guangzhao focusing module can sense the image sensing module; =μ:Λ Imaging 'recalculate each short-distance target and the distance ^盥MTF佶, ΐ, then rotate the focusing module to change to the MTF of the sensing position, although this adjustment makes the close distance target and the value of the majority of the far-distance target are closer to zero, and the surrounding (four) The value satisfies the specification date; the second is to image the lens for the best position, and the best far and near target recognition. [Embodiment] The technical content and detailed description of the present invention will be described below with reference to the following figures: I. See the first, second and third figures, which is the image sensing module of the present invention. The device is stereoscopic, top view and side view. As shown in the figure, the multi-point focus detecting device of the Maoyi shirt-like sensing module comprises: a substrate 1 and a substrate 1 provided with a close-range target group 2, and the near-distance target group 2 carries a bearing The short-distance target 3 is provided with a plurality of long-distance target plates 4 located under the close-range target group 2 on the substrate ,, and is configured to be overlapped with the aforementioned close-range target 3 to form an upper and lower overlapping configuration. a child near = off-label group 2, having a shaft 2 i disposed on the substrate 1 on the 4-axis cup 2 1 is provided with a base 2 2, which carries a | / close-range target 3 on the base 2 2, can be synchronized The above-mentioned close-range target 3 is moved to the upper and lower adjustment positions of the shaft 2 1 , and the positioning elements 23, 24 are used as the lock fixing position after the adjustment position. The short-distance target 3 is composed of a light source module (not shown) disposed adjacent to the distance target 3 in the proximity target group 2, and provides a uniform light source to illuminate the black and white line pattern 3 1 . And long distance

第7頁 1274169 五、發明說明(4) 標板4則以相對應粗細之黑白相間之線條圖案(圖中未繪 示)置於準直儀(C ο 1 1 i m a t 〇 r )之焦點上,使黑白相間之 影像投射於無窮遠處即是遠距標板4。 請參閱第四圖所示,係本發明之影像感測模組多點調 焦檢測裝置與調焦模組配置示意圖。如圖所示··本發明之 影像感測模組多點調焦檢測裝置由其基板1組裝於一檢測 裝置5設定位置,並與同樣裝組在檢測裝置5之調焦模組 6 ,該調焦模組6可置入如影像感測元件(CMOS )。 當影像感測元件(圖中未示)至置入於調焦模組6後 丨,該檢測裝置5上方投射出光源,讓近距離標板3與多數 個遠距離標板4,利用光源,使近距離標板3與多數個遠 距離標板4上設定的線條圖案3 1 (遠距離標板的線條圖 案,於圖中未繪示)成像於調焦模組6之影像感測元件中 心位置,再由旋轉調焦模組6進行調焦動作,配合程式運 算,直到近距離標板3與多數個遠距離標板4之線條圖案 3 1調焦至清晰時,即完成調焦動作。 上述該近距離標板3與多數個遠距離標板4之匹配配 置設計,在另實施例結構中,可相互替換配置設計,即由 > 一遠距離標板4設置於該近距離標板組2,並由多數近距 離標板3配置於上述基板1表面上,形成上、下重疊配置 組態; 由上述另實施例以一遠距離標板4與多數近距離標板 3之配置設計下,配合光源模組(圖中未繪示)所提供之 光源,同樣可獲得利用多數近距離標板3與一遠距離標板Page 7 1274169 V. Invention Description (4) The target 4 is placed on the focus of the collimator (C ο 1 1 imat 〇r) with a black and white line pattern (not shown) corresponding to the thickness. Projecting the black and white image at infinity is the distance target 4. Please refer to the fourth figure, which is a schematic diagram of the configuration of the multi-point focus detecting device and the focusing module of the image sensing module of the present invention. As shown in the figure, the multi-point focus detecting device of the image sensing module of the present invention is assembled from the substrate 1 to a set position of the detecting device 5, and is similarly assembled to the focusing module 6 of the detecting device 5. The focusing module 6 can be placed, for example, as an image sensing element (CMOS). When the image sensing component (not shown) is placed in the focusing module 6, the light source is projected above the detecting device 5, and the proximity target 3 and the plurality of remote markings 4 are used, and the light source is used. The line pattern 3 1 (the line pattern of the long distance target, not shown in the figure) set on the proximity target 3 and the plurality of remote targets 4 is imaged in the center of the image sensing element of the focusing module 6 The position is further adjusted by the rotation focusing module 6 and the program operation is performed until the close-up target 3 and the line pattern 3 1 of the plurality of remote targets 4 are adjusted to be clear, that is, the focusing operation is completed. The above-mentioned short-distance target 3 is matched with a plurality of long-distance target 4, and in another embodiment, the configuration can be replaced with each other, that is, by a remote distance target 4 disposed on the near-distance target Group 2, and is disposed on the surface of the substrate 1 by a plurality of short-distance target 3s to form an upper and lower overlapping configuration; and the configuration of a remote target 4 and a plurality of close-range targets 3 is designed by the above-mentioned other embodiment. The light source provided by the light source module (not shown) can also be obtained by using most of the short distance target 3 and a long distance target.

第8頁 1274169 五、發明說明(5) 4之線條圖案3 1成像於調焦模組6 位置,藉由旋轉調焦模組6完成調焦之影像感測元件中心 本舍明之衫像感測模組多點調 用由一近距離標板3與多數遠距離^票:剛方法,主要係利 標板4與多數近距離標板3之舌β Γ反4 ’或者一遠距離 ^〜里豐配置, MTF值運算,以調整影像感測元件(c 形η成夕點感測與 置,該檢測調焦方法步驟包括: S )最佳的對焦位 利用上述一近距離標板與多數遠距離 距離標板與多數近距離標板3之重聂 不板,或者一遠 丨裝置5後’如第四圖所*,能讓;離J相,於檢測 ^之線條㈣’同時產生成像於影= 、接著’計算各近距離標板3與遠距離標板4成像於与 像感測兀件之中心位置的MTF (Modulation Transfer Fu= cti on )值,該MTF值係透過下列計算方法 (卜”/(P+”x 國,MTF運;二〜100 %,所以MTF值愈大,影像愈清晰。 ^然後,根據各近距離標板3與遠距離板4分別計算所 ^寻之MTF值,將各遠距標板4 iMTF值減去近距標板3之 F值,該差異愈小暨愈接近於零愈好; 與MTF再值利者用旋轉調焦模組6 ,以改變於感測位置之成像 /,、或者、土’當此調整使近距離標板3與多數遠距離標板4 算越接3距離標板4與多數近距離標板3之MTF值相減運 於零時’即各近距離標板3與遠距離標板4之成Page 8 1274169 V. Invention Description (5) The line pattern 3 of 4 is imaged at the position of the focusing module 6, and the image sensing component center of the image sensing component is finished by rotating the focusing module 6 The module multi-point call is made up of a close distance target 3 and most long distance ^ tickets: the new method, mainly the target 4 and the most close target 3 of the tongue β Γ 反 4 ' or a long distance ^ ~ Li Feng Configuration, MTF value calculation, to adjust the image sensing component (c-shaped η into singular sensing and setting, the detection focusing method steps include: S) the optimal focus position using the above-mentioned close distance target and most of the distance The distance between the target and the majority of the close-up target 3 is not the plate, or after a far-reaching device 5, as shown in the fourth figure, can be; from the J phase, in the detection of the line (four) 'simultaneous imaging = , then 'calculate the MTF (Modulation Transfer Fu = cti on ) value of each of the near distance target 3 and the remote target 4 imaged at the center of the image sensing element, the MTF value is transmitted through the following calculation method ( "/(P+"x country, MTF transport; two ~ 100%, so the larger the MTF value, the clearer the image. ^ Then, the root The short-distance target 3 and the long-distance board 4 respectively calculate the MTF value of the search, and subtract the F value of the close target 3 from the distance value of each distance target 4 iMTF, the smaller the difference is closer to zero Good; with the MTF re-valuer using the rotating focus module 6 to change the imaging position of the sensing position /, or, soil 'when this adjustment makes the close distance target 3 and most of the long-distance target 4 3 The distance target 4 is reduced to the MTF value of most close distance targets 3 at zero time, that is, the short distance target 3 and the long distance target 4 are formed.

1274169 五、發明說明(6) 像均在清晰狀態,同時週邊的MTF值也滿足規格時,即完 成影像感測元件之調焦動作,並可獲得該鏡頭成像最佳位 置,與最佳遠、近目標識別。 上述僅為本發明之較佳實施例而已,並非用來限定本 發明實施範圍。即凡依本發明申請專利範圍所做的均等變 化與修飾,皆為本發明專利範圍所涵蓋。1274169 V. Invention description (6) When the image is in a clear state and the surrounding MTF value also meets the specifications, the focusing operation of the image sensing component is completed, and the optimal position of the lens imaging is obtained, and the best distance is Near target recognition. The above are only the preferred embodiments of the present invention and are not intended to limit the scope of the present invention. That is, the equivalent changes and modifications made by the scope of the patent application of the present invention are covered by the scope of the invention.

第10頁 1274169 圖式簡單說明 【圖式簡單說明】Page 10 1274169 Simple description of the schema [Simple description of the schema]

第11頁 第 _ 一 圖 係 本 發 明裝置 一 具 體 實 施 例 之 立 體 結 構圖 0 第 二 圖 係 本 發 明裝置 一 具 體 實 施 例 之 俯 視 圖 〇 第 —- 圖 係 本 發 明裝置 一 具 體 實 施 例 之 一 側 視 圖。 第 四 圖 係 本 發 明裝置 之 調 焦 動 作 示 意 圖 〇 [ 主 要 元 件 符 號說明 ] 基 板 1 近 距 離 標 板 組 2 近 距 離 標 板 3 遠 距 離 標 板 4 檢 測 裝 置 5 調 焦 模 組 6 轴 桿 2 1 基 座 C 12 定 位 元 件 2 3 、2 4 線 條 圖 案 C 3 111 is a perspective view of a specific embodiment of the device of the present invention. FIG. 2 is a plan view of a specific embodiment of the device of the present invention. FIG. . The fourth figure is a schematic diagram of the focusing operation of the device of the present invention 〇 [Main component symbol description] Substrate 1 Close-range target group 2 Close-range target 3 Remote target 4 Detection device 5 Focusing module 6 Axle 2 1 base Seat C 12 positioning element 2 3 , 2 4 line pattern C 3 1

Claims (1)

12741691274169 六、申請專利範圍 多數個配置於二”板上之近距離標板,並與上 標板形成上、下重璺配置組態。 巨離 7、 =測模組多點調焦檢測方 測調焦方法步驟包括: 7 ^心 a) : Ξ ϊ ϊ Γ標板與多數遠距離標板安裝於檢冽穿 影像感測元件之中心位置; 战像於 b )、t #近距離標’反與多婁欠遠距離標板成像於影像 感測元件之中心位置的MTF值,並以絕對值之距像 ►標板MTF值減去近距離標板之MTF值,該值愈 : 零愈清晰; 巩於 c )、利用旋轉調焦模組位置,使近距離標板與 距離標板之MTF值相減運算越接近於零時,再 MJF值,滿足規格時,…調焦動作,並可獲得該3 成像隶佳位置,與最佳遠、近目標識別。 、 8、 -種影像感測模組多點調焦檢法 測調焦方法步驟包括: f& ":)、月!一遠距離標板與多數近距離標板安裝於檢測 ,二ί ί代讓通距離標板與多數近距離標板能同時產生成像 於影像感測元件之中心位置; 豕 “b i、ΐ算多數近距離標板與遠距離標板成像於影像 Γ愈青晰 之MTF值,該值愈小暨愈接近於Sixth, the scope of application for patents Most of them are arranged on the near-field target board on the second board, and form the configuration of the upper and lower squats with the superscript board. The large-scale 7, = test module multi-point focus detection side measurement The focal method steps include: 7 ^心 a) : Ξ ϊ ϊ Γ 与 与 与 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数 多数The MTF value of the far-distance target image is imaged at the center of the image sensing component, and the MTF value of the close-range target is subtracted from the absolute value of the image like the target MTF value. The value is more: the clearer the zero; Gong (c), using the position of the rotating focus module, so that the MTF value of the close distance target and the distance target is subtracted from the zero, and then the MJF value, when the specification is met, the focus adjustment action is obtained. The 3 imaging is in a good position, and the best far and near target recognition. 8, the image sensing module multi-point focus detection method measurement focusing method includes: f&":), month! The distance target and most close-range targets are installed in the inspection, and the distance is the closest to the target. The off-label can simultaneously generate the image at the center of the image sensing element; 豕 “bi, calculate the MTF value of most of the close-range target and the far-distance target image in the image, the smaller the value, the closer it is. to 1274169 六、申請專利範圍 C )、利用旋轉調焦模組位置,使遠距離標板與多數 近距離標板之MTF值相減運算越接近於零時,再計算週邊 的MTF值也滿足規格時,即完成調焦動作,並可獲得該鏡 頭成像最佳位置,與最佳遠、近目標識別。1274169 VI. Application for patent scope C). Use the position of the rotating focusing module to make the MTF value of the long distance target and most close distance targets closer to zero, and then calculate the surrounding MTF value to meet the specifications. That is, the focusing operation is completed, and the optimal position of the lens imaging can be obtained, and the best far and near target recognition. 第14頁Page 14
TW94115526A 2005-05-13 2005-05-13 Multi-point focus adjustment detection method for image sensing module and the device thereof TWI274169B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8169603B2 (en) 2008-12-31 2012-05-01 Uma Technology Inc. Lens-testing apparatus and lens-testing method having a plurality of combinations of object distances
TWI385361B (en) * 2008-12-09 2013-02-11 Uma Technology Inc A test apparatus having a plurality of combinations of object distances and a test method

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CN112087621B (en) * 2019-06-14 2022-07-05 宁波舜宇光电信息有限公司 Lens detection apparatus and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI385361B (en) * 2008-12-09 2013-02-11 Uma Technology Inc A test apparatus having a plurality of combinations of object distances and a test method
US8169603B2 (en) 2008-12-31 2012-05-01 Uma Technology Inc. Lens-testing apparatus and lens-testing method having a plurality of combinations of object distances

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