1278661 玖、發明說明： 【發明所屬之技術領域】 本發明係有關於數位相機（DSC )、卡片型相機、行動 電話、監視相機、PC相機（附屬於個人電腦的拍攝裝置） ’再者，係有關於一種採用於小型拍攝裝置之高性能、且 簡式的拍攝透鏡，其係已使用CCD (電荷耦合元件；charge coupled device )等拍攝元件的小型拍攝裝置。 【先前技術】 例如，在使用於卡片型相機等之拍攝裝置中，爲具備有 拍攝透鏡、CCD等拍攝元件、以及機械性之快門構件，構 成爲，在拍攝透鏡與拍攝元件之間配置快門構件，藉由使 該快門構件進行開閉動作而開啓，進而以拍攝透鏡拍攝被 拍體之影像、投影至拍攝元件，將此種已投影之影像藉由 拍攝元件轉換成電氣訊號、以作爲影像資料來擷取。 在此，於著眼至習知之數位相機（DSC )之拍攝透鏡後 ，除了具有高畫素之外爲採用擷取影像之CCD，因此，在 構造方面係類似於VTR用拍攝透鏡。不過，在要求解析度 或影像之品質方面，爲更要求更高之性能，因此在構造方 面佔多數情況係以形成爲複雜化，即使針對光學系統之大 小、即使CCD之畫面尺寸相同，相較於VTR用拍攝透鏡仍 是以DSC用拍攝透鏡之一方爲呈現大型化。以下，針對習 知之DSC用之拍攝透鏡列舉特徵性的槪略。 1.具有高畫質。 在最近，於CCD之畫素數目方面，即使是300萬畫素至 1278661 400萬畫素，亦被發表在一般取向之DSC中。而所謂使用 在VTR、35萬畫素等級之拍攝元件，在畫面尺寸上係爲不 同，因此在直接比較方面係較不具有實質意義’不過’若 是無視於畫面尺寸時，則將形成有約略1 0倍之差異。亦即 ，係可判斷出即使在拍攝透鏡中所要求之像差改正（ aberration correction)之精度（難易度）亦有該種差異程 度之不同。 在提升CCD畫素數目方面，目前一般係採用無須儘可能 的增大畫面尺寸，而是藉由減小畫素間距的方法來提升畫 素數目的方法，例如，作爲數位靜態相機用，最近所發表 之有效畫素數目係爲在130萬畫素等級之CCD中畫素間距 爲形成4.2//m程度者。從而，即使將最小錯亂圓徑假定爲 畫素間距之兩倍仍爲8.4/z m，35mm尺寸之鹵化銀相機之最 小錯亂圓徑係判斷爲約33 # m，因此，可稱在數位靜態相 機之拍攝透鏡中所要求之解析力約爲鹵化銀相機之4倍。 2.影像側之遠心（telecentric )性爲呈現良好狀。 所謂的影像側之遠心性，係指對於各像點之光束之主光 線在射出光學系統之最終面後，便形成略與光軸平行，亦 即，可稱之爲與影像面略爲垂直正交。換言之，光學系統 之出射光瞳（exit pupil )位置爲十分遠離影像面者。此係 爲，因CCD上之濾色器係位於稍微遠離拍攝面之位置上， 故而當光線傾斜射入之情況下，將實質性的減少開口效率 (被稱之爲明暗法（shading ))，特別在最近之高感度型 之CCD中，係多爲在拍攝面正前方配設有微透鏡陣列，不 1278661 過，即使在此種情況下亦同樣地無法充分遠離出射光瞳’ 故而在周邊爲減低開口效率。 3 ·必須要有較大之 後焦點。 起因於CCD之構造，爲必須要有保護用的玻璃板、或是 依據其後之空間，爲較之原來更需要在拍攝透鏡之光學系 統與CCD之間具有插入幾個光學元件之空間（後焦點）。 由於下述目的，爲須使被插入至光學系統與CCD之間者爲 紅外線吸收濾波器（IR)，該等目的係爲：防止起因於CCD 之週期構造所產生之波紋現象等之目的、使在所插入之光 學低通濾波器（以下稱爲〇LPF、LP )以及相位板（PP )或 在C C D之紅外線波長區域中之感度降低而靠近人類眼睛之 相對能見度（relative visibility)之目的。 如此，在習知之D S C之拍攝透鏡方面，槪略上爲具有三 個特徵（條件），不過，尤其是爲了實現2·以及3·之項目 ，即使是標準透鏡，其目前之狀態係仍具有必須選擇後對 焦型（retro focus )之狀態。此係造成對於拍攝透鏡之小型 化的極大障礙。 【發明內容】 〔發明所欲解決之課題〕 不過，在此種拍攝裝置中，爲在拍攝透鏡與拍攝元件之 間配置有快門構件，因此形成爲藉由拍攝透鏡與拍攝元件 而使快門構件受到限制，也因此’造成快門構件之設計以 及製作上的繁雜費力，此外，在將拍攝透鏡與拍攝元件正 確的定位在光軸方面，更需要使快門構件定位在該等構件 ~ 8 - 1278661 之間，故而在拍攝透鏡、拍攝元件、以及快門構件之組裝 作業方面爲要求更高之精度，而具有在組裝作業方面費力 、生產性惡化等問題。 此外，在此種拍攝裝置中，因爲將快門構件配置在拍攝 透鏡與拍攝元件之間，故而在未使用時造成拍攝透鏡露出 ，因此，將有拍攝透鏡污損、受到傷害之虞，進而必須有 用以保護拍攝透鏡之透鏡罩，也因爲如此，亦有增加構件 數目之問題。 本發明之課題係爲，快門構件爲不致因拍攝透鏡或拍攝 元件而受到限制、可容易地進行製作，同時，係可在非拍 攝時保護拍攝透鏡。此外，本發明之其他課題係爲，可精 度爲佳且容易地進行拍攝透鏡、拍攝元件、以及快門構件 之組裝作業。 此外，有鑑於前述事件，其目的在於可獲得具有下列特 徵之拍攝透鏡，即，在已使用拍攝元件之拍攝光學系統中 ’爲在前述拍攝元件之被拍體方面具備有由多數之拍攝透 鏡所形成之透鏡群，且藉由將紅外光線吸收濾波器配置在 前述透鏡群之被拍體側，而形成爲可縮短框架對焦、進而 用以使其簡化者。 〔用以解決課題之手段〕 於申請專利範圍第1項所記載之發明係爲，一種拍攝裝 置’爲將被拍體之影像以拍攝透鏡投影在拍攝元件，將此 種已投影之影像以前述拍攝元件而作爲影像資料來擷取， 其特徵爲具有·· 1278661 於前述拍攝透鏡之被拍體側上係設有快門構件，其至少 一部份爲被配置在設於本體殼體之表面的裝飾部之內部， 用以在拍攝時，爲了決定曝光時間而覆蓋前述拍攝透鏡； 將前述拍攝透鏡與前述拍攝元件而構成之拍攝單元一體 化固定光圏，其與前述拍攝透鏡之前述被拍體側鄰接、且 配置在較前述快門構件更靠近影像面側。 若藉由此種發明時，係將快門構件配置在拍攝透鏡之被 拍體側，因此，藉由拍攝透鏡或拍攝元件而不致使快門構 件受到限制，進而可容易地進行快門構件之設計及製作， 藉此，係可達到快門構件之小型化以及薄型化，伴隨於此 ，爲可達到裝置整體之小型化以及薄型化，同時在非拍攝 時係開閉自如的關閉快門構件、覆蓋拍攝透鏡，因此，在 非拍攝時，係可將拍攝透鏡藉由快門構件而確實的保護、 不致使拍攝透鏡受到污損或傷害。 【實施方式】 〔第1實施例〕 以下，參照第1圖至第5圖，針對將本發明之拍攝裝置 適用在卡片型相機之實施例進行說明。 第1圖所示係爲由前面側所視之本發明之卡片型相.機之 立體圖，第2圖所示係將第1圖之卡片型相機由後側所視 之立體圖，第3圖所示係爲第1圖之局部分解立體圖，第4 圖所示係爲第3圖之側面圖，第5圖係爲表示第3圖之拍 攝單元之擴大斷面圖。 此種卡片型相機係如第1圖以及第2圖所示，爲具備有 -10- 1278661 相機本體1。該相機本體1係由前殼體2與後殼體3所構成 ，該等前殼體2與後殻體3均是以不銹鋼等剛性較高之金 屬製薄板所形成。 在此情況下，於前殼體2之前面的右上端爲如第1圖所 示，設有拍攝裝置4，而在位於其左側之處上係設有光學取 景器5，而在更位於左側之處上爲設有問光燈發光部6。此 外，於此種前殼體2與後殼體3上面中之前面左側（在第2 圖中爲右側）方面，係設有快門鈕7以及第一選單鈕8。另 一方面，在後殼體3後面（在第2圖中爲前面）中之位於 · 左側之處上，如第2圖所示，爲設有顯示部9，而在位於其 右側之處上則設有可在十字方向操作之游標鍵1 0。而在位 於該游標鍵1 〇之上側以及右側之處上，除了分別設有第二 選單鈕11、電源鍵12之外，使光學取景器5由前殼體2側 連續地設置在位於顯示部9之上側之處上。 拍攝裝置4係如第3圖以及第4圖所示，係具備有用以 決定拍攝單元1 3與曝光時間之快門構件1 4，在拍攝單元1 3 之被拍體側（在第3圖中係爲靠近觀察者側）上爲配置有 0 快門構件1 4，同時，爲使光學取景器5配置在該拍攝單元 1 3之側部（在第3圖中爲左側），在此種狀態下之拍攝單 元1 3、快門構件1 4、以及光學取景器5係被構成爲組裝至 相機本體1內。在此情況下，拍攝單元13係如第5圖所示 ，於被設在基板1 5內之固定座構件1 6內係設有拍攝部1 7 以及水晶濾波器1 8，在該固定座構件1 6之前端部（於該圖 中係爲左端部）係設有透鏡部1 9，且構成爲使該等拍攝部 - 1 1 - 1278661 1 7、水晶濾波器1 8、以及透鏡部1 9之各個中心爲配置成爲 位於光軸20上之狀態。 拍攝部1 7係如第5圖所示，係具備有：被設在固定座構 件16內之基板15之固定座21、被收容在該固定座21之凹 部21a內之CCD等之拍攝元件22、覆蓋該拍攝元件22而 被配置在固定座21之覆蓋玻璃23，且構成爲對應於以透鏡 部1 9所拍攝之被拍體之影像，而將拍攝元件22輸出電氣 訊號。水晶濾波器1 8係爲光學低通濾波器，爲在已對應於 拍攝部1 7之被拍體側（在第5圖中爲左側）之狀態下被配 置在固定座構件16內。透鏡部19係具備有被安裝在固定 座構件16之前端部（在第5圖爲左端部）之鏡筒24，且形 成爲在該鏡筒24內由影像面側（在第5圖中爲右側）依序 設置有拍攝透鏡25以及固定光圈26。 在此情況下，鏡筒24係如第5圖所示爲被形成爲圓筒狀 ，在其內部中之中間部分上，爲形成有維持拍攝透鏡25之 鍔部27。該鍔部27之內周面係被形成爲推拔狀，係藉由固 定光圈26以不致限制畫角而使被拍體側（在該圖中爲左側 )以大於拍攝透鏡2 5之透鏡機能部分的徑値，而形成爲使 影像面側（在該圖中爲右側）爲大於該徑値。此外，於該 鏡筒24內中之鍔部27之被拍體側（在該圖中爲左側）上 ，係形成有裝設拍攝透鏡25以及固定光圈26之裝設凹部28 。此外，該種鏡筒24係爲，被形成在其外周面之公螺紋24a 係藉由螺鎖至被形成在固定座構件16之內周面上之母螺紋 16a，而被安裝在固定構件16上。 -12- 1278661 此外’拍攝透鏡25係如第5圖所示，爲具有將凹面朝向 被拍體側（在該圖中爲左側）之彎月形透鏡，其外周部係 形成爲與中心部之透鏡厚度相同、或是形成爲更薄之平坦 狀。此種拍攝透鏡25係爲，由被拍體側插入至裝設凹部28 內’其外周部之平坦狀的後面（在該圖中爲右側面）係以 接著劑接著至鍔部27、固定在裝設凹部28內。固定光圏26 係被形成爲對於拍攝透鏡25之透鏡厚度爲十分薄狀之薄板 狀，其外型雖略與拍攝透鏡25相同，不過，係形成爲大於 該拍攝透鏡25，且在其中心部上形成有將光軸20作爲中心 之圓形的貫通孔26a。此種固定光圈26係爲，在裝設凹部 28內由被拍體側插入、密接至拍攝透鏡25之前面（在該圖 中係爲左側面），並且固定光圏26之前面（在該圖中係爲 左側面）係藉由形成略於鏡筒24之前端面相同之平面的狀 態下，而以接著劑被固定在裝設凹部28內。 另一方面，快門構件14係如第13圖所示，具備有快門 殻體30，在該快門殼體30內係以可旋轉狀的安裝有快門板 片3 1，同時，在該快門殼體30上係安裝有驅動快門板片3 1 之致動器32，藉由此種致動器32而使快門板片31旋轉， 藉此而在快門殼體30之中心部中，將貫通其表裏（在第3 圖中係爲前後）而所設置之圓形的快門孔3 3構成爲以快門 板片31來進行開閉。在此情況下，快門殻體3 0係爲，其 快門孔3 3之中心爲在位於拍攝單元1 3之光軸20上之狀態 下，如第3圖及第4圖所示’而被收容在其殼體2之裝飾 部34內。 -13- 1278661 裝飾部34係由被配置在前殻體2之內面側（在第3圖中 爲後面側）的殼體35、以及被配置在前殻體2之前面側（ 在第3圖中爲靠近觀察者側）的裝飾環3 6所形成，且構成 爲經由殼體3 5而將快門殻體3 0安裝在前殼體2。亦即，殼 體3 5係如第3圖以及第4圖所示，藉由吸收衝擊之軟性材 質的合成樹脂而形成具有段差、且略爲圓板狀。在該殻體35 之內部中，爲設有插入快門殻體30之收容凹部37，其前端 部（在圖中爲靠近觀察者側之端部）上係設有對應於快門 殼體30之快門孔33的圓形之貫通孔35a。 Φ 此外，該種快門殼體35係如第4圖所示，其前端部（在 該圖中爲左端部）係被插入至已設在前殼體2之右上角之 圓形的開口部3 8內、且突出於前殼體2之前面側（在該圖 中爲左側），且構成在此種狀態下爲被安裝在前殼體2內 ' 。此外，裝飾環3 6係藉由具有裝飾性之金屬板而形成略爲 環狀，且由前殼體2之開口部3 8裝設在突出於前面側之殼 體3 5的前端部之外周，構成爲藉此來覆蓋、隱藏殻體3 5 之前端部。 · 若藉由此種卡片型相機時，爲將快門構件1 4配置在拍攝 單元13之拍攝透鏡25之被拍體側，因此，藉由拍攝透鏡25 或拍攝元件22將不致使快門構件1 4受到限制，故而可容 易地進行快門構件1 4之設計以及製作，藉此’可達到快門 構件1 4之小型化以及薄型化，更甚者，爲可達到相機整體 之小型化以及薄型化。特別是使快門構件1 4配置在拍攝透 鏡2 5之被拍體側，因此，在非拍攝時爲可藉由快門構件1 4 -14- 1278661 而呈現開閉自如狀地覆蓋拍攝透鏡25，也因此，在非拍攝 時，爲使拍攝透鏡25不致污損、受到傷害，而藉由快門構 件1 4來確實的保護拍攝透鏡2 5。 此外，在此種卡片型相機中，係將拍攝透鏡2 5以及拍攝 元件22作爲拍攝單元1 3而一體化，構成爲與此種拍攝單 元1 3不同之快門構件1 4，且將該種快門構件1 4以另件構 造而配置在拍攝單元1 3之被拍體側，因此，在組裝時係僅 將快門構件1 4對於拍攝單元1 3進行定位即可，故而可精 度爲佳且容易地進行拍攝單元1 3與快門構件1 4之間的組 裝作業，藉此爲可達到生產性之提升、且可獲得低價之物 〇 此外，在此種卡片型相機中，爲將固定光圈26配置在拍 攝透鏡25之被拍體側、且相較於快門構件14爲更靠近影 像面側，因此，係可將快門構件1 4配置在極爲靠近固定光 圏26之位置上，藉此爲可防止曝光不均、同時光圏係爲固 定光圈26，因此，相較於採用可動光圈之情況下，爲可簡 單的構成快門構件1 4，即便是藉此亦可達到裝置整體之小 型化以及薄型化。特別是將固定光圈26形成爲對於拍攝透 鏡25之透鏡厚度爲充分薄化之薄板狀，藉由使該固定光圈 26密接在拍攝透鏡25之狀態下，爲在鏡筒24之安裝凹部 28內一同固定有拍攝透鏡25，因此，係可充分的薄化固定 光圏26之厚度，藉此，係可縮短在光軸20方向中之長度 ，故而可達到拍攝單元1 3之小型化以及薄型化。 再者，在此種卡片型相機中，在突出於前殻體2之前側 - 1 5 - 1278661 所設置之裝飾部3 4內收容有快門構件1 4之快門殻體3 0之 狀態下，爲將快門構件14配置在前殼體2內，因此可薄化 由前殼體2與後殼體3所形成之相機本體1之厚度，藉此 ，亦可達到相機整體之小型化以及薄型化。在此情況下， 裝飾部34係將被配置在前殼體2之內面側的殼體35以軟 性材質的合成樹脂所形成，且在該殼體3 5之收容凹部3 7 中收容有快門殻體3 0，因此，爲藉由該殼體3 5而吸收衝擊 以避免將衝擊施加至快門構件1 4，而可保護快門構件1 4。 此外，即便使殼體3 5之前端部由前殻體2之開口部3 8突 φ 出於前面側，爲將裝飾環3 6裝設於該以突出之殼體3 5之 前端部，且覆蓋、隱藏殼體35之前端部，因此係可獲得在 外觀性、設計性方面均佳之物。 此外，在上述實施例中，雖是·針對適用於卡片型相機之 情況來進行說明，不過’並不僅限定於此’例如，除了可 藉由組裝至行動電話等電子機器而使用之外，亦可作爲小 型相機來單獨使用。 〔第2實施例〕 # 其次，在以下參照第6圖至第9圖，針對本發明之拍攝 光學系統來進行說明。 本發明之拍攝透鏡係爲’在已使用CCD等拍攝元件之拍 攝光學系統中，藉由將紅外光線吸收濾波器配置在拍攝透 鏡之被拍體側，而可短時間地設定後焦點者爲其特徵。 在表1中爲揭示將紅外光線吸收濾波器配置在拍攝透鏡 與拍攝元件之間的習知例、以及將本發明之紅外光線吸收 -16- 1278661 濾波器設置在拍攝透鏡之最靠近被拍體側之設計的一實施 例之全長（TL )的比較。在習知例之光軸上之全長係爲，TL =16.59mm，而在一實施例中之全長係爲，TL= 15.76。其 間之差爲〇 · 8 3 mm，則係藉由本發明所達成之效果，此係證 明在拍攝透鏡之小型化中爲具有較大之效果。 此外，在一實施例中雖是採用單焦點透鏡來進行說明， 不過，並非是特別限定在單焦點透鏡中。 【表1】 習知例之TL 一實施例之TL TL之差 16.59mm 15.76mm 0.83mm 以下，針對習知例與一實施例而揭示具體之數値，藉此 來補足本發明之說明。在表以及圖面中，f係爲透鏡全系列 之焦點距離，Fn。係爲F編號，2ω係爲透鏡之全畫角，TL 係爲由配置在最靠近被拍體側之透鏡或是紅外光線吸收濾 波器之被拍體側面至影像面爲止之光軸上的距離，bf係表 示框架對焦。框架對焦bf係爲分別由最接近影像面之透鏡 影像側面而至影像面爲止之空氣換算距離。此外，R係爲 曲率半徑，D係爲透鏡厚度或是透鏡間隔，Nd係爲d線之 折射率，v d係表示d線之阿貝數（Abbe number )。此外 ，球面像差（spherical aberration)圖中之d、g、C係爲在 各個波長中之像差曲線，在散光（astigmatism )圖中之S 係爲弧矢（sagittal) ，Μ係表示子午面（對於光軸垂直之 面）。 在習知例中，在最靠近影像面之透鏡與影像面之間，爲 - 17- 1278661 配置有光學低通濾波器LP、相位板PP、紅外光線吸收濾波 器IR、CCD之覆蓋玻璃CG。在一實施例中，紅外光線吸 收濾波器IR係被配置在最靠近被拍體側，而在最靠近影像 面之透鏡與影像面之間係配置有光學低通濾波器LP、相位 板PP、CCD之覆蓋玻璃CG。 針對於在習知例以及一實施例中所使用之非球面，如同 習知，將光軸方向設爲Z軸、將與光軸正交之方向設爲Y 軸時，將藉由非球面式： Z= ( Y2/r) (1 + /"{1-(1 + K) (Y/r)2}] · + A · Y4+ B · Y6+ C · Y8+ D · Y10+ … 所付與之曲線旋轉於光軸之周圍，以所獲得之曲面而將 近軸（paraxial)曲率半徑付與：r、將圓錐常數付與：Κ、 將高階之非球面係數付與：A、B、C、D而定義形狀。此 外，在表中之圓錐常數以及高階之非球面係數之表示記錄 方面，「E與連結於E之數字」係以「10之乘方來表示」 。例如，「E — 4」係意味著「1 0_4」，該數値係爲乘以之前 的數値。 _ 〔習知例〕 有關於習知例的數値例係揭示於表2。此外，第3圖係爲 其透鏡構造圖，第4圖係爲其各個像差圖。透鏡之構造係 以配置成如下所述而構成，即，最爲靠近被拍體側之作爲 負透鏡的第一透鏡L 1、隔有空氣間隔而將開口光圏S 1以 及S2略置有空氣間隔之作爲正透鏡的第二透鏡L2、由隔 有空氣間隔之作爲負透鏡的第三透鏡L3、作爲正透鏡之第 -1 8 - 1278661 四透鏡L4、最後爲略置有空氣間隔之作爲正透鏡的第五透 鏡L5。構成爲在第一透鏡L1中進行發散作用、由靠近開 口光圈S後面之第二透鏡 光作用的後對焦型。 【表2】 f=4.39 fno=2.86 2ω L2至第五透鏡L5 »=65.30° TL=16.59 爲止爲具有聚 bf=4.02 面No· R D Nd ^ d 1 11.829 0.60 1.58913 61.25 2 3.448 3.36 — — 開口光圈 SI CO 0.50 一 — 開口光圏 S2 CO 0.36 — — 開口光圈 3 4.472 1.21 1.80420 46.50 4 -11.322 1.58 — — 5 -3.482 0.60 1.84666 23.78 6 7.436 0.17 — — 7 18.657 1.72 1.69350 55.02 8 -3.754 0.03 一 — 9 11.436 1.40 1.77250 49.62 10 -27.132 0.60 — — 11 GO 1.97 1.54880 67.00 水晶OLPF+相位板 12 CO 0.50 1.51680 64.20 紅外光線吸收濾波器 13 GO 0.50 — — 14 GO 0.50 1.51680 64.20 CCD蓋板玻璃 15_co_--_—_—_ 非球面係數 第 8 面 K=-0.621461E+01 A=-0.120601E-01 B=0.157434E-02 -19- 1278661 Ο - 0.139018E-03 D=0.836217E-05 〔一實施例〕 將針對於本發明之拍攝透鏡之一實施例之數値例揭示於 表3。此外，第1圖係爲其透鏡之構造圖，第2圖係爲其各 個像差圖。透鏡之槪略構造係爲除了使紅外光線吸收濾波 器配置在最靠近被拍體側以外均未有變化。 【表3】 f=4.40_fno=2.86_2ω=65.06° TL=15.76_bf=3.66_1278661 玖, the invention description: [Technical Field] The present invention relates to a digital camera (DSC), a card type camera, a mobile phone, a surveillance camera, a PC camera (a camera attached to a personal computer) Regarding a high-performance and simple imaging lens used in a small-sized imaging device, it is a small-sized imaging device that uses an imaging element such as a CCD (charge coupled device). [Prior Art] For example, an imaging device used in a card type camera or the like includes an imaging element such as an imaging lens or a CCD, and a mechanical shutter member, and is configured such that a shutter member is disposed between the imaging lens and the imaging element. By opening and closing the shutter member, the image of the subject is captured by the imaging lens and projected onto the imaging element, and the projected image is converted into an electrical signal by the imaging element to serve as image data. Capture. Here, after focusing on a conventional digital camera (DSC) lens, in addition to having a high pixel, a CCD for capturing an image is used, and therefore, it is similar to a VTR lens for construction. However, in terms of the resolution or the quality of the image, higher performance is required, so that most of the construction is complicated, even for the size of the optical system, even if the screen size of the CCD is the same, The shooting lens for the VTR is still enlarged in size as one of the DSC lens. Hereinafter, characteristic lenses for the conventional DSC lens are listed. 1. With high image quality. Recently, in terms of the number of pixels in the CCD, even 3 million pixels to 1,278,661 million pixels have been published in the general orientation of the DSC. The so-called VTR, 350,000 pixel level imaging elements are different in screen size, so they are less meaningful in direct comparison. However, if you ignore the screen size, it will form approximately 1 0 times the difference. That is, it is judged that the degree of difference in the accuracy (difficulty) of the aberration correction required in the photographing lens is different. In terms of increasing the number of CCD pixels, it is generally used to increase the number of pixels by reducing the pixel pitch, for example, as a digital still camera, recently. The number of valid pixels published is that the pixel spacing in the CCD of 1.3 million pixels is 4.2//m. Therefore, even if the minimum slanted circle diameter is assumed to be 8.4/zm twice the pixel pitch, the minimum sinusoidal diameter of the 35mm-sized silver halide camera is judged to be about 33 # m, so it can be called a digital still camera. The resolution required in the lens is about 4 times that of a silver halide camera. 2. The telecentricity of the image side is good. The telecentricity of the image side means that the chief ray of the beam for each image point is formed to be slightly parallel to the optical axis after exiting the final surface of the optical system, that is, it can be said to be slightly perpendicular to the image surface. cross. In other words, the position of the exit pupil of the optical system is very far from the image plane. In this case, since the color filter on the CCD is located slightly away from the image capturing surface, when the light is obliquely incident, the opening efficiency (referred to as shading) is substantially reduced. In particular, in recent high-sensitivity CCDs, most of them are equipped with a microlens array directly in front of the imaging surface, and it is not 1278661. Even in this case, it is not possible to sufficiently move away from the exit pupil. Reduce the efficiency of the opening. 3 · Must have a larger back focus. Due to the structure of the CCD, it is necessary to have a protective glass plate, or according to the space behind it, it is necessary to have a space for inserting several optical components between the optical system of the photographing lens and the CCD. focus). For the purpose of inserting between the optical system and the CCD, an infrared absorption filter (IR) is used for the purpose of preventing ripples caused by the periodic structure of the CCD, etc. The sensitivity of the inserted optical low-pass filter (hereinafter referred to as 〇LPF, LP) and the phase plate (PP) or in the infrared wavelength region of the CCD is lowered to be close to the relative visibility of the human eye. Thus, in the conventional DSC lens, there are three characteristics (conditions), but in particular, in order to realize the items of 2 and 3, even the standard lens has its current state. Select the state of the retro focus. This causes a great obstacle to the miniaturization of the taking lens. [Problem to be Solved by the Invention] However, in such an imaging device, since the shutter member is disposed between the imaging lens and the imaging element, the shutter member is formed by the imaging lens and the imaging element. Limitation, and therefore, 'causes the design and production of the shutter member to be cumbersome and laborious. In addition, in order to correctly position the lens and the imaging element in the optical axis, it is more necessary to position the shutter member between the members ~ 8 - 1278661 Therefore, in order to achieve higher precision in the assembly work of the photographing lens, the imaging element, and the shutter member, there are problems such as laborious assembly work and deterioration in productivity. Further, in such an imaging device, since the shutter member is disposed between the imaging lens and the imaging element, the imaging lens is exposed when not in use, and therefore the lens is contaminated and damaged, and must be useful. In order to protect the lens cover of the taking lens, there is also a problem of increasing the number of components. The subject of the present invention is that the shutter member can be easily produced without being restricted by the photographing lens or the imaging element, and the photographing lens can be protected at the time of non-photographing. Further, another object of the present invention is to facilitate the assembly work of the imaging lens, the imaging element, and the shutter member with excellent accuracy. Further, in view of the foregoing events, it is an object of the invention to obtain a photographing lens having the following features, that is, in the photographing optical system in which the photographing element has been used, 'the photographing body of the photographing element is provided with a plurality of photographing lenses The formed lens group is formed by arranging the infrared ray absorbing filter on the subject side of the lens group to reduce the focus of the frame and to simplify it. [Means for Solving the Problem] The invention described in the first aspect of the patent application is that an imaging device 'projects an image of a subject onto a photographing element with a photographing lens, and the projected image is as described above. The imaging device is captured as image data, and is characterized in that: 1278661 is provided with a shutter member on a side of the subject of the photographing lens, at least a portion of which is disposed on a surface of the body casing. The inside of the decorative portion covers the imaging lens for determining the exposure time during imaging; and the imaging unit including the imaging lens and the imaging element is integrated with the aperture, and the subject of the imaging lens The side is adjacent to each other and disposed closer to the image surface side than the shutter member. According to the invention, the shutter member is disposed on the side of the subject of the photographing lens, and therefore, the shutter member can be easily designed and manufactured by taking a lens or an imaging element without restricting the shutter member. In this way, the size and thickness of the shutter member can be reduced, and the entire device can be reduced in size and thickness, and the shutter member can be closed and closed and the imaging lens can be closed during non-photographing. In the case of non-shooting, the lens can be reliably protected by the shutter member without causing the lens to be stained or damaged. [Embodiment] [First Embodiment] Hereinafter, an embodiment in which an imaging device of the present invention is applied to a card type camera will be described with reference to Figs. 1 to 5 . Fig. 1 is a perspective view of the card type phase machine of the present invention as viewed from the front side, and Fig. 2 is a perspective view of the card type camera of Fig. 1 viewed from the rear side, Fig. 3 The drawing is a partially exploded perspective view of Fig. 1, the fourth drawing is a side view of Fig. 3, and the fifth drawing is an enlarged sectional view showing the imaging unit of Fig. 3. As shown in Fig. 1 and Fig. 2, the card type camera has a camera body 1 of -10- 1278661. The camera body 1 is composed of a front case 2 and a rear case 3, and both of the front case 2 and the rear case 3 are formed of a metal-made thin plate having a high rigidity such as stainless steel. In this case, the upper right end of the front surface of the front casing 2 is as shown in Fig. 1, and the image pickup device 4 is provided, and the optical viewfinder 5 is provided on the left side thereof, and is located on the left side. Whereas, a light-emitting portion 6 is provided. Further, in the front left side (the right side in Fig. 2) of the front case 2 and the rear case 3, a shutter button 7 and a first menu button 8 are provided. On the other hand, in the rear side of the rear case 3 (the front side in Fig. 2) on the left side, as shown in Fig. 2, the display portion 9 is provided, and on the right side thereof There is a cursor key 10 that can be operated in the cross direction. On the upper side and the right side of the cursor key 1 ,, in addition to the second menu button 11 and the power button 12, respectively, the optical viewfinder 5 is continuously disposed on the display portion from the front housing 2 side. 9 on the upper side. As shown in FIGS. 3 and 4, the imaging device 4 includes a shutter member 14 for determining the imaging unit 13 and the exposure time, and is on the subject side of the imaging unit 13 (in FIG. 3) In order to be close to the observer side, a shutter member 14 is disposed, and at the same time, in order to arrange the optical viewfinder 5 on the side of the photographing unit 13 (left side in FIG. 3), in this state The photographing unit 13 , the shutter member 14 , and the optical viewfinder 5 are configured to be assembled into the camera body 1 . In this case, as shown in FIG. 5, the imaging unit 13 is provided with an imaging unit 17 and a crystal filter 1 8 in the fixed seat member 16 provided in the substrate 15 in the fixing member. The front end portion (the left end portion in the figure) is provided with a lens portion 119, and is configured such that the image capturing portions - 1 1 - 1278661 17 , the crystal filter 18, and the lens portion 19 Each of the centers is in a state of being placed on the optical axis 20. As shown in FIG. 5, the imaging unit 17 includes an imaging unit 22 such as a fixed base 21 of the substrate 15 provided in the fixed base member 16, and a CCD or the like housed in the concave portion 21a of the fixed base 21. The cover glass 23, which covers the imaging element 22 and is disposed on the cover glass 23 of the mount 21, is configured to output an electrical signal to the imaging element 22 in response to an image of the subject photographed by the lens unit 19. The crystal filter 18 is an optical low-pass filter, and is disposed in the fixed seat member 16 in a state corresponding to the subject side (the left side in Fig. 5) of the imaging unit 17. The lens portion 19 is provided with a lens barrel 24 attached to an end portion (left end portion in Fig. 5) of the fixing seat member 16, and is formed in the lens barrel 24 by the image surface side (in Fig. 5 The right side) is provided with a photographing lens 25 and a fixed aperture 26 in this order. In this case, the lens barrel 24 is formed into a cylindrical shape as shown in Fig. 5, and a crotch portion 27 for maintaining the imaging lens 25 is formed in an intermediate portion of the inside. The inner peripheral surface of the crotch portion 27 is formed in a push-up shape, and the lens side (in the figure, the left side) is made larger than the lens function of the photographing lens 25 by fixing the diaphragm 26 so as not to restrict the drawing angle. Part of the diameter is formed such that the image side (on the right side in the figure) is larger than the diameter. Further, on the subject side (the left side in the figure) of the crotch portion 27 in the inside of the lens barrel 24, a mounting recess 28 in which the imaging lens 25 and the fixed diaphragm 26 are attached is formed. Further, the lens barrel 24 is such that the male screw 24a formed on the outer peripheral surface thereof is attached to the fixing member 16 by screwing to the female screw 16a formed on the inner circumferential surface of the fixed seat member 16. on. -12- 1278661 Further, as shown in Fig. 5, the 'photographing lens 25 is a meniscus lens having a concave surface toward the subject side (left side in the figure), and the outer peripheral portion is formed to be the center portion The lens has the same thickness or is formed into a thinner flat shape. The imaging lens 25 is inserted into the flat surface of the mounting recess 28 from the side of the subject, and the rear surface (the right side in the figure) of the outer peripheral portion is attached to the crotch portion 27 by the adhesive. The inside of the recess 28 is installed. The fixed aperture 26 is formed into a thin plate shape having a very thin lens thickness with respect to the imaging lens 25, and its outer shape is slightly the same as that of the imaging lens 25, but is formed to be larger than the imaging lens 25 and at the center thereof. A through hole 26a having a circular shape with the optical axis 20 as a center is formed thereon. The fixed diaphragm 26 is inserted into the front side of the photographing lens 25 in the mounting recessed portion 28, and is attached to the front surface of the photographing lens 25 (the left side surface in the drawing), and is fixed to the front surface of the diaphragm 26 (in the figure). The middle side is the left side surface), and is formed in the mounting recessed part 28 with an adhesive in a state in which it is formed in the same plane as the front end surface of the lens barrel 24. On the other hand, as shown in FIG. 13, the shutter member 14 is provided with a shutter housing 30 in which a shutter plate piece 3 is rotatably mounted, and at the same time, in the shutter housing The actuator 32 for driving the shutter plate 3 1 is attached to the upper portion 30, and the shutter plate 31 is rotated by the actuator 32, thereby passing through the front and the bottom of the shutter housing 30. The circular shutter hole 3 3 provided in the front and rear (in the third drawing) is configured to be opened and closed by the shutter plate 31. In this case, the shutter housing 30 is such that the center of the shutter hole 3 3 is received in the state of being located on the optical axis 20 of the imaging unit 13 as shown in FIGS. 3 and 4 In the decorative portion 34 of the housing 2 thereof. -13- 1278661 The decorative portion 34 is disposed on the inner surface side (the rear side in the third drawing) of the front case 2, and is disposed on the front side of the front case 2 (at the third side) The decorative ring 36 is formed near the viewer side in the figure, and is configured to mount the shutter housing 30 to the front case 2 via the housing 35. That is, as shown in Fig. 3 and Fig. 4, the casing 35 is formed into a disc shape by a synthetic resin which absorbs a soft material having an impact and has a step shape. In the inside of the casing 35, a housing recess 37 into which the shutter housing 30 is inserted is provided, and a front end portion (an end portion on the observer side in the drawing) is provided with a shutter corresponding to the shutter housing 30. A circular through hole 35a of the hole 33. Φ Further, as shown in FIG. 4, the shutter housing 35 is inserted into a circular opening portion 3 which is provided at the upper right corner of the front housing 2, and has a front end portion (left end portion in the drawing). 8 is protruded from the front side of the front case 2 (left side in the figure), and is configured to be mounted in the front case 2 in this state. Further, the decorative ring 36 is formed in a substantially annular shape by a decorative metal plate, and is provided by the opening portion 38 of the front case 2 at the outer periphery of the front end portion of the case 35 projecting from the front side. It is configured to cover and hide the front end of the casing 35. In the case of such a card type camera, in order to dispose the shutter member 14 on the subject side of the photographing lens 25 of the photographing unit 13, the shutter member 14 will not be caused by the photographing lens 25 or the photographing element 22 By being limited, the design and production of the shutter member 14 can be easily performed, whereby the size and thickness of the shutter member 14 can be reduced, and further, the size and thickness of the entire camera can be reduced. In particular, since the shutter member 14 is disposed on the subject side of the photographing lens 25, the photographing lens 25 can be opened and closed by the shutter member 1 4 -14 - 1278661 at the time of non-photographing, and therefore In the case of non-photographing, the photographing lens 25 is surely protected by the shutter member 14 in order to prevent the lens 25 from being stained and damaged. Further, in such a card type camera, the photographing lens 25 and the photographing element 22 are integrated as the photographing unit 13 and configured as a shutter member 14 different from the photographing unit 13 and the shutter is used. Since the member 14 is disposed on the subject side of the imaging unit 13 in a separate configuration, it is only necessary to position the shutter member 14 with respect to the imaging unit 13 at the time of assembly, so that the accuracy is excellent and easy. The assembly work between the photographing unit 13 and the shutter member 14 is performed, whereby the productivity can be improved and a low-priced object can be obtained. Further, in the card type camera, the fixed aperture 26 is disposed. On the side of the subject of the photographing lens 25 and closer to the image side than the shutter member 14, the shutter member 14 can be disposed at a position very close to the fixed aperture 26, thereby preventing Since the exposure is uneven and the aperture is the fixed aperture 26, the shutter member 14 can be easily formed as compared with the case where the movable aperture is used, and even the entire device can be miniaturized and thinned. . In particular, the fixed aperture 26 is formed into a thin plate shape in which the lens thickness of the imaging lens 25 is sufficiently thinned, and the fixed aperture 26 is closely attached to the imaging lens 25, together with the mounting recess 28 of the lens barrel 24. Since the imaging lens 25 is fixed, the thickness of the fixed aperture 26 can be sufficiently thinned, whereby the length in the direction of the optical axis 20 can be shortened, so that the imaging unit 13 can be made smaller and thinner. Further, in the card type camera, in a state in which the shutter member 30 of the shutter member 14 is housed in the decorative portion 34 provided on the front side of the front case 2 - 1 5 - 1278661, Since the shutter member 14 is disposed in the front case 2, the thickness of the camera body 1 formed by the front case 2 and the rear case 3 can be thinned, whereby the overall size and thickness of the camera can be reduced. In this case, the decorative portion 34 is formed of a soft synthetic resin in the case 35 disposed on the inner surface side of the front case 2, and a shutter is accommodated in the housing recess 37 of the case 35. The housing 30, therefore, protects the shutter member 14 by absorbing shock by the housing 35 to avoid applying an impact to the shutter member 14. Further, even if the front end portion of the casing 35 is protruded from the opening portion 38 of the front casing 2 from the front side, the decorative ring 36 is attached to the front end of the protruding casing 35, and The front end portion of the casing 35 is covered and hidden, so that it is excellent in both appearance and design. Further, in the above-described embodiment, the description is applied to a case where a card type camera is applied, but 'not limited to this', except for being used by being incorporated in an electronic device such as a mobile phone. Can be used as a compact camera alone. [Second embodiment] # Next, the photographing optical system of the present invention will be described below with reference to Figs. 6 to 9 . In the photographing optical system of the present invention, in the photographing optical system that has used an imaging element such as a CCD, the infrared light absorbing filter is disposed on the side of the subject of the photographing lens, and the back focus can be set for a short time. feature. In Table 1, a conventional example in which an infrared ray absorbing filter is disposed between a photographic lens and an imaging element, and the infrared ray absorbing-16-1278661 filter of the present invention are disposed closest to the subject of the photographic lens are disclosed. A comparison of the full length (TL) of an embodiment of the side design. The full length on the optical axis of the conventional example is TL = 16.59 mm, and in one embodiment the full length is TL = 15.76. The difference between them is 〇 · 8 3 mm, which is an effect achieved by the present invention, which proves to have a large effect in miniaturization of the photographing lens. Further, although an embodiment is described using a single focus lens, it is not particularly limited to a single focus lens. [Table 1] The difference between the TL and the TL of the conventional example is 16.59 mm, 15.76 mm, 0.83 mm or less, and a specific number is disclosed for a conventional example and an embodiment, thereby complementing the description of the present invention. In the table and the drawing, f is the focal length of the full range of lenses, Fn. The number is F, 2ω is the full angle of the lens, and TL is the distance from the side of the subject closest to the subject side or the side of the subject of the infrared ray absorption filter to the optical axis. , bf indicates that the frame is in focus. The frame focus bf is the air conversion distance from the side of the lens image closest to the image surface to the image surface. Further, R is the radius of curvature, D is the lens thickness or the lens interval, Nd is the refractive index of the d line, and v d is the Abbe number of the d line. In addition, d, g, and C in the spherical aberration diagram are aberration curves at respective wavelengths, and in the astigmatism diagram, S is sagittal, and lanthanum is meridional. (for the plane perpendicular to the optical axis). In the conventional example, the optical low-pass filter LP, the phase plate PP, the infrared light absorbing filter IR, and the CCD cover glass CG are disposed between the lens closest to the image surface and the image surface. In one embodiment, the infrared ray absorbing filter IR is disposed closest to the subject side, and an optical low pass filter LP, a phase plate PP, and an optical low pass filter LP are disposed between the lens closest to the image surface and the image surface. The CCD covers the glass CG. For the aspherical surface used in the conventional example and the embodiment, as in the prior art, when the optical axis direction is set to the Z axis and the direction orthogonal to the optical axis is set to the Y axis, the aspherical surface is used. : Z= ( Y2/r) (1 + /"{1-(1 + K) (Y/r)2}] · + A · Y4+ B · Y6+ C · Y8+ D · Y10+ ... Rotating around the optical axis, applying the paraxial radius of curvature to the obtained curved surface: r, adding the conic constant: Κ, assigning the higher-order aspherical coefficients: A, B, C, D In addition, in terms of the conic constants in the table and the representation of the high-order aspheric coefficients, "E and the number connected to E" are expressed by "10". For example, "E-4" This means "1 0_4", which is the number before the multiplication. _ [Conventional example] The numerical examples of the conventional examples are shown in Table 2. In addition, the third figure is the lens structure. Fig. 4 is a diagram showing the respective aberrations of the lens. The structure of the lens is configured to be configured as follows, that is, the first lens L 1 as a negative lens closest to the subject side is separated a second lens L2 as a positive lens with an air gap between the aperture stops S1 and S2, and a third lens L3 as a negative lens with an air gap therebetween, as a positive lens -1 - 8 - 1278661 The fourth lens L4, and finally the fifth lens L5 which is a positive lens with an air gap, is configured as a rear focusing type which performs divergence in the first lens L1 and acts on the second lens light behind the aperture stop S. [Table 2] f=4.39 fno=2.86 2ω L2 to the fifth lens L5 »=65.30° TL=16.59 has a poly bf=4.02 No. RD Nd ^ d 1 11.829 0.60 1.58913 61.25 2 3.448 3.36 — — Opening Aperture SI CO 0.50 1 - Open aperture S2 CO 0.36 — — Open aperture 3 4.472 1.21 1.80420 46.50 4 -11.322 1.58 — — 5 —3.482 0.60 1.84666 23.78 6 7.436 0.17 — — 7 18.657 1.72 1.69350 55.02 8 -3.754 0.03 -9 11.436 1.40 1.77250 49.62 10 -27.132 0.60 — — 11 GO 1.97 1.54880 67.00 Crystal OLPF+ phase plate 12 CO 0.50 1.51680 64.20 Infrared light absorption filter 13 GO 0.50 — — 14 GO 0.50 1.51680 64.20 CCD cover glass 15_co_--_____ Aspheric coefficient 8th surface K=-0.621461E+01 A=-0.120601E-01 B=0.157434E-02 -19- 1278661 Ο - 0.139018E-03 D = 0.836217E-05 [An embodiment] A numerical example of one embodiment of the photographing lens of the present invention is disclosed in Table 3. Further, Fig. 1 is a structural diagram of a lens thereof, and Fig. 2 is a diagram showing aberrations thereof. The approximate structure of the lens is such that there is no change except that the infrared ray absorbing filter is disposed closest to the side of the subject. [Table 3] f=4.40_fno=2.86_2ω=65.06° TL=15.76_bf=3.66_
面 No. R 2 3 4 51 52 5 6 7 8 9 10 11 12 13 14 15 16 13.613 3.448 4.214 -13.783 -3.482 8.746 24.508 -3.333 6.615 25.340 D 0.50 0.50 0.60 2.60 0.300.00 1.17 1.62 0.60 0.15 1.76 0.03 1.40 0.60 1.97 0.50 0.50No. R 2 3 4 51 52 5 6 7 8 9 10 11 12 13 14 15 16 13.613 3.448 4.214 -13.783 -3.482 8.746 24.508 -3.333 6.615 25.340 D 0.50 0.50 0.60 2.60 0.300.00 1.17 1.62 0.60 0.15 1.76 0.03 1.40 0.60 1.97 0.50 0.50
Nd ^ d 1.51680 64.20 紅外光線吸收濾波器 1.58913 61.25 開口光圈 — — 開口光圈 — —' 開口光圏 1.80420 46.50 1.84666 23.78 1.69350 55.02 1.77250 49.62 1.54880 67.00 水晶OLPF+相位板 1.51680 64.20 CCD蓋板玻璃 非球面係數 -20- 1278661 第 10 面 K=-0.503401E+01 A=-0.138924E-01 Β=0·178560Ε-02 C=-0.179323E-03 D=0.14731 IE-05 如此，藉由進行習知例與一實施例之資料的比較後，爲 可得知本發明之拍攝透鏡在性能方面爲與習知例幾乎未有 所改變，而可達成更加小型化者。 〔發明之功效〕 如上述說明，若藉由此種發明時，係將快門構件配置在 拍攝透鏡之被拍體側，因此，藉由拍攝透鏡或拍攝元件而 不致使快門構件受到限制，進而可容易地進行快門構件之 設計及製作，藉此，係可達到快門構件之小型化以及薄型 化，伴隨於此，爲可達到裝置整體之小型化以及薄型化， 同時在非拍攝時係開閉自如的關閉快門構件、覆蓋拍攝透 鏡，因此，在非拍攝時，係可將拍攝透鏡藉由快門構件而 確實的保護、不致使拍攝透鏡受到污損或傷害。特別是在 已一體化拍攝透鏡與拍攝元件之拍攝單元之被拍體側上， 係以另件構造而配置有快門構件，因此，對於拍攝單元係 僅需將快門構件進行定位即可，因此，可精度爲佳且容易 地進行拍攝單元與快門構件之間的組裝作業，藉此爲可達 到生產性之提升。 在此情況下，爲在拍攝透鏡之被拍體側、且較前述快門 構件爲更靠近影像面側上配置有固定光圏，因此，係可將 快門構件配置在極爲靠近固定光圈之位置上，藉此爲可防 止曝光不均、同時光圈係爲固定光圈，因此，相較於採用 可動光圈之情況下，爲可簡單的構成快門構件，即便是藉 此亦可達到裝置整體之小型化以及薄型化。 -21- 1278661 此外，在已設在本體殼體表面內之裝飾部內，至少配置 一部份的快門構件，藉此，爲可達到拍攝裝置所組裝之本 體殼體的薄型化，即便是藉此亦可達到裝置整體之小型化 以及薄型化。 若藉由本發明時，係可以高性能來提供簡式的拍攝透鏡 〇 【圖式簡單說明】 第1圖所示係將本發明適用在卡片型相機而由前面側所 見之立體圖。 第2圖所示係將第1圖之卡片型相機由後側所視之立體 圖。 第3圖所示係爲第1圖之局部分解立體圖。 第4圖所示係爲第3圖之側面圖。 胃5圖係爲表示第3圖之拍攝單元之擴大斷面圖。 胃6圖所示以本發明所達成之簡式的拍攝透鏡之一實施 例之透鏡構造圖。 胃7圖所示係爲一實施例之簡式的拍攝透鏡之各個像差 圖。 胃8圖所示係爲習知.例之拍攝透鏡之透鏡構成圖。 胃9圖所示係爲習知例之拍攝透鏡之各個像差圖。 [主要部分之代表符號說明】 1 :相機本體 2 :前殻體 3 :後殻體 -22- 1278661 4 :拍攝裝置 1 3 :拍攝單元 1 4 :快門構件 1 7 :拍攝部 1 9 :透鏡部 20 :光軸 2 2 :拍攝元件 2 5 :拍攝透鏡 26 :固定光圈 3 0 :快門殻體 3 1 :快門扳片 3 2 :致動器 34 :裝飾部 35 :殼體 3 6 :裝飾環 IR :紅外光線吸收濾波器 L1至L5 :透鏡 _ 5 1、S2 :開口光圈 - 23-Nd ^ d 1.51680 64.20 Infrared light absorption filter 1.58913 61.25 Open aperture - Open aperture - ' Opening aperture 1.80420 46.50 1.84666 23.78 1.69350 55.02 1.77250 49.62 1.54880 67.00 Crystal OLPF + phase plate 1.51680 64.20 CCD cover glass aspheric coefficient -20- 1278661 10th face K=-0.503401E+01 A=-0.138924E-01 Β=0·178560Ε-02 C=-0.179323E-03 D=0.14731 IE-05 Thus, by carrying out the conventional example and an embodiment After the comparison of the data, it is understood that the photographing lens of the present invention has almost no change in performance from the conventional example, and it is possible to achieve further miniaturization. [Effects of the Invention] As described above, according to the invention, the shutter member is disposed on the side of the subject of the photographing lens, and therefore the shutter member is not restricted by the photographing lens or the imaging element. By designing and fabricating the shutter member, the shutter member can be reduced in size and thickness, and the entire device can be reduced in size and thickness, and can be opened and closed at the time of non-photographing. The shutter member is closed and the photographing lens is covered. Therefore, when the photographing lens is not photographed, the photographing lens can be surely protected by the shutter member, and the photographing lens is not stained or damaged. In particular, on the subject side of the imaging unit that has integrated the imaging lens and the imaging element, the shutter member is disposed in a separate structure. Therefore, it is only necessary to position the shutter member for the imaging unit. The assembly work between the photographing unit and the shutter member can be performed with high precision, and the productivity can be improved. In this case, the fixed aperture is disposed on the side of the subject on which the lens is photographed and on the side closer to the image than the shutter member. Therefore, the shutter member can be disposed at a position very close to the fixed aperture. In this way, it is possible to prevent the unevenness of the exposure and the aperture to be a fixed aperture. Therefore, the shutter member can be easily configured as compared with the case where the movable aperture is used, and even the entire device can be miniaturized and thin. Chemical. -21- 1278661 Further, at least a part of the shutter member is disposed in the decorative portion provided in the surface of the main body casing, thereby making it possible to achieve a thinning of the body casing assembled by the photographing device, even if It is also possible to achieve miniaturization and thinning of the entire device. According to the present invention, a simple shooting lens can be provided with high performance. [Schematic description of the drawings] Fig. 1 is a perspective view showing the present invention applied to a card type camera and seen from the front side. Fig. 2 is a perspective view of the card type camera of Fig. 1 as viewed from the rear side. Fig. 3 is a partially exploded perspective view of Fig. 1. Figure 4 is a side view of Figure 3. The stomach 5 is an enlarged cross-sectional view showing the photographing unit of Fig. 3. Fig. 6 is a view showing a lens configuration diagram of an embodiment of a simple imaging lens achieved by the present invention. The stomach 7 is shown as an aberration diagram of a simple lens of an embodiment. The figure of the stomach 8 is a lens configuration diagram of a conventional lens. The diagram of the stomach 9 is a diagram showing aberrations of the lens of the conventional example. [Description of representative symbols of main parts] 1 : Camera body 2 : Front case 3 : Rear case -22 - 1278661 4 : Photographing device 1 3 : Photographing unit 1 4 : Shutter member 1 7 : Photographing unit 1 9 : Lens unit 20: optical axis 2 2 : imaging element 2 5 : imaging lens 26 : fixed aperture 30 : shutter housing 3 1 : shutter plate 3 2 : actuator 34 : decorative portion 35 : housing 3 6 : decorative ring IR : Infrared light absorbing filters L1 to L5: Lens _ 5 1 , S2 : Open aperture - 23-