201038992 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種鏡頭，特別是指一種能降低高度 的鏡頭裝置。 【先前技術】 現今相機與手機等產品為了朝小型化發展，其鏡頭亦 有朝小型化發展的趨勢。 參閱圖1與圖2,以往的—種鏡頭裝置i包含一鏡筒u D 及一安裝於該鏡筒11内的鏡片單元12。該鏡筒u包括一 繞一軸線L設置的環壁1 i i、—連接該環壁i丨丨頂緣且圍繞 界定一光圈孔112的頂壁113 ,及複數彼此相間隔形成於該 頂壁113的調焦槽114，每—調焦槽114具有一沿該軸線l 方向設置的調焦槽内面115，及一垂直該調焦槽内面115的 調焦止面116。該鏡片單元12包括一鄰近該光圈孔112的 第一鏡片121，該第一鏡片121具有一對應該光圈孔112的 有效徑區122，及一圍繞該有效徑區122的承靠區123， 〇 有效徑區122具有一朝成像端設置的底端面124，該承靠區 ， 123具有一朝物端設置的外圈頂面125，及一與該外圈頂面 125相背設置的外圈底面126。定義該底端面124位於該軸 線L位置為底端面中心點c，該底端面中心點c高度低於 該承靠區123外圈底面126高度，因此該有效徑區122距 離該鏡筒11頂面的預留距離大於所需的預留距離，而增加 了該鏡頭裝置1的整體高度。 疋義該調焦槽内面115與該軸線L的垂直距離為調焦 3 201038992 槽徑距d，而該第—鏡片121外周面與該Ml的距離為苐 -半徑Φ卜其中，該等調焦槽114向内的深度較深，即， 調焦槽徑距d小於該第一半徑01，因此該調焦止面ιΐ6的 兩度必定大於該第-鏡片121的外圈頂面125，才能使該鏡 筒11頂壁113具有足約的肉厚，進而增加了該鏡頭1 整體高度。 、Ii 【發明内容】201038992 VI. Description of the Invention: [Technical Field] The present invention relates to a lens, and more particularly to a lens device capable of reducing the height. [Prior Art] In order to develop miniaturization of cameras and mobile phones, the lens has also become smaller and smaller. Referring to FIGS. 1 and 2, a conventional lens device i includes a lens barrel u D and a lens unit 12 mounted in the lens barrel 11. The lens barrel u includes a ring wall 1 ii disposed about an axis L, a top wall 113 connecting the ring wall i top edge and surrounding a diaphragm hole 112, and a plurality of spaced apart from each other to be formed on the top wall 113. The focusing groove 114 has a focusing groove inner surface 115 disposed along the axis l direction and a focusing end surface 116 perpendicular to the inner surface 115 of the focusing groove. The lens unit 12 includes a first lens 121 adjacent to the aperture hole 112. The first lens 121 has a pair of effective diameter regions 122 that should be the aperture holes 112, and a bearing area 123 surrounding the effective diameter region 122. The effective diameter region 122 has a bottom end surface 124 disposed toward the imaging end, the bearing area 123 having an outer ring top surface 125 disposed toward the object end, and an outer ring bottom surface disposed opposite the outer ring top surface 125 126. Defining the bottom end surface 124 at the position of the axis L is the bottom end center point c, and the height of the bottom end center point c is lower than the height of the outer ring bottom surface 126 of the bearing area 123, so the effective diameter area 122 is away from the top surface of the lens barrel 11 The reserved distance is greater than the required reserved distance, and the overall height of the lens device 1 is increased. The vertical distance between the inner surface 115 of the focusing groove and the axis L is the focus 3 201038992 groove pitch d, and the distance between the outer circumferential surface of the first lens 121 and the M1 is 苐-radius Φ, wherein the adjustment The inward depth of the focal groove 114 is deep, that is, the focal length d of the focusing groove is smaller than the first radius 01. Therefore, the two degrees of the focusing stop surface ι 6 must be greater than the outer surface top surface 125 of the first lens 121. The top wall 113 of the lens barrel 11 has a meat thickness of about enough to increase the overall height of the lens 1. , Ii [invention content]
因此，本發明之目的，即在提供一種能降低高 頭裝置。 A 於是，本發明能降低高度的鏡頭裝置，包含一鏡筒及 一鏡片單S。t義位於-軸線相反兩端的物端與成像端， 該鏡筒包括一環繞該軸線設置的環壁、—連接於該環壁頂 緣且圍繞界定一光圈孔的頂壁，及複數彼此相間隔形成於 該頂壁外周面的調焦槽，該環壁内周面具有一沿該轴線方 向設置的小徑段，及-沿該軸線方向設置於該小徑段靠近 成像端處的大徑段，該小徑段與大徑段呈階級狀且該大砰 段徑寬大於該小徑段徑寬，該頂壁底面具有—圍繞該光圈 孔的内環底面’及-圍繞該内環底面外周的外環底面，該 内環底面與該外環底面呈階級狀且該内環底面的高度高於 該外環底面’每一調焦槽具有一沿該軸線方向設置的調隹 槽内面’及一垂直該調焦槽内面的調焦止面，定義每一調 ，槽内面與該軸線的垂直距離為調焦槽徑距。該鏡片單元 =裝於該鏡筒内，沿該轴線由物端至成像端依序包括一第 一鏡片及-第二鏡片’該第—鏡片容置於該鏡筒環壁的小 201038992 徑段内，且該第二鏡片容置於該頊辟从+ - 吻壁的大徑段内，該第一 鏡片具有一對應該光圈孔設置於兮 4軸線的有效徑區，及一 環繞該有效徑區的承靠區，該承青Γ^曰士 Λ取罪區具有一對應該内環底 面的内圈頂面’及一對應該外環麻 J衣底面的外圈頂面，該内、 外圈頂面呈階級狀，且該内圈頂一 1国j貝面的尚度高於該外圈頂面 γ定義該第-鏡片外周面與該輛線的距離為第一半徑，該 第一半徑的長度小於該調焦槽徑距。 轉明之功效在於利用該調焦槽徑距大於該第一半徑 ，且該鏡筒頂壁與㈣-鏡片皆呈階級狀，使得該等調焦 槽與該第一鏡片在沿該軸線方向的高度部分重疊，以降低 該鏡頭裝置的整體高度。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一個較佳實施例的詳細說明中，將可 清楚的呈現。 〕 在本發明被詳細描述之前，要注意的是，在以下的說 月内谷中滷似的元件是以相同的編號來表示。 參閱圖3與圖4,本發明能降低高度的鏡頭裝置之一較 佳實把例包含一鏡筒2、一鏡片單元3及一遮光單元4。 該鏡筒2用於供該鏡片單元3與該遮光單元4裝設， 定義位於—軸線L’相反兩端的物端與成像端，該鏡筒2包 括5衣繞5亥轴線L’設置的環壁2〖、一連接於該環壁2丨頂緣 且圍、矣界定—光圈孔22的頂壁23，及複數彼此相間隔形成 於該頂壁23外周面的調焦槽24。 201038992 該環壁2i _面具有—沿該軸線L，方向設置的小徑段 211 ’及-沿該軸、線L，方向設置於該小徑段2ιι冑近成像端 處的大徑段212，該小徑段211與大#段212呈階級狀且該 大徑段212徑寬大於該小徑段211徑寬。 該頂壁23底面具有一圍繞該光圈孔22的内環底面加 ，及-圍繞該内環底面231外周的外環底面232。該内、外 環底面231、232呈現階級狀，且該内環底面231的高度高 於該外環底面232的高度。 ^ ..... 每一調㈣24具有—沿該軸線L，方向設置的調焦槽内 ，241，及—垂直該調焦槽内面241的調焦止面242,定義 每調焦槽内面241與該軸線L，的垂直距離為調焦槽徑距 d，° “鏡片單元3女裂於該鏡筒2内，沿該軸線L，由物端 至成像端依序包括—第—鏡Μ 31、—第二鏡片32、一第三 鏡片33及一第四鏡片34。 °玄第鏡片3 1容置於該鏡筒2環壁21的小徑段211， 該第二鏡片32容置於該環壁21的大徑段212。 y «亥第一鏡片31具有一對應該光圈孔22設置於該軸線 的有效k區311’及一環繞該有效徑區311的承靠區312 該有效徑區311具有一面向該第二鏡片32的底端面 313。 該承罪區312具有一對應該内環底面231的内圈頂面 314 對應5亥外環底面232的外圈頂面315、一與該外圈 6 201038992 頂面315相背設置的外圈底面316，及一位於該外圈底面 316與該有效徑區311底端面313間的斜内圈底面317。該 内、外圈頂面314、315呈階級狀，且該内圈頂面314的高 度高於該外圈頂面315。該斜内圈底面317由外至内向物端 傾斜’該外圈底面316與斜内底面317共同供該第二鏡片 32抵靠。 該遮光單元4由物端至成像端依序包括一夾置於該第 一鏡片31與該鏡筒2頂壁23的第一遮光片41、一夾置於 該第二、三鏡片32、33間的第二遮光片42，及一夾置於該 第三、四鏡片33、34間的第三遮光片43。 定義该第一鏡片31外周面與該轴線L，的距離為第一半 徑φΐ ，該第一半徑φΐ’的長度小於該調焦槽徑距d，，且在本 較佳實施例中，該等調焦槽24的調焦止面242高度低於該 第-鏡片31承靠g 312的外圈頂面315，即表示該等調焦 槽24是設置於該第-鏡片31外周，使得該鏡筒2的㈣ 21與頂壁23在具有足夠肉厚的情況下，有效縮減該鏡頭裝 置整體高度。 & 定義該有效徑區311的底端面313位於該轴線l，處為 底端面中心點c’，在本較佳實施例中’該承靠區312的外 圈底面316高度低於該有效徑區311的底端面中心點。， 也就是說’將該第一鏡片31的有效徑區311向物端推 效縮減該鏡頭裝置的整體厚度。 ^ 定義該第二鏡片 第一鏡片31的第一 Μ與該軸線L，距離為第二半徑衫，該 半徑ΦΓ長度小於該第二鏡片32的第^ 201038992 半徑Φ2，藉由該第一半徑Φ1，較小，因此可以提供該鏡筒2 環壁21足夠的肉厚，以維持該鏡筒2的結構強度。 綜上所述，藉由調配元件間的配置關係以降低該鏡頭 裝置整體而度’且在調配相對關係的同時顧及該鏡筒2頂 壁23與環壁21的肉厚。將該等調焦槽以設置於該第—鏡 片31外周’目此該等調焦槽24與該第一鏡片31沿該軸線 L’方向的高度部分重疊，且該鏡筒2頂^ 23與該第一鏡片 31皆呈階級狀，以降低該鏡頭裝置的高度。 除此之外，該第一鏡片31承靠區312的外圈底面316 高度低於該有效徑區311的底端面中心點c，，使該有效徑 區311盡量提高高度，以盡量減少該鏡筒2頂壁23頂面與 该有效徑區311間預留的距離，故確實能達成本發明之目的 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範g，即大凡依本發”請:利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 說明以往的一種鏡頭裝置； ，說明以往鏡頭裝置的組配關係 圖1是一立體分解圖， 圖2是一剖面侧視圖 與整體高度； 圖3是-類似於圖1的視圖’說明本發明能降低高度 的鏡頭裝置的一較佳實施例；及 圖4是-類似於圖2的視圖，說明本較佳實施例的組 201038992 配關係與整體高度。Accordingly, it is an object of the present invention to provide a device capable of lowering the head. A Thus, the present invention is capable of reducing the height of the lens device, comprising a lens barrel and a lens unit S. The t-sense is located at the opposite end of the opposite end of the axis and the imaging end, the lens barrel includes a ring wall disposed around the axis, a top wall connected to the top edge of the ring wall and surrounding a ring aperture, and a plurality of spaced apart from each other a focusing groove formed on an outer circumferential surface of the top wall, the inner circumferential mask of the annular wall has a small diameter section disposed along the axial direction, and a large diameter disposed along the axial direction near the imaging end a section, the small diameter section and the large diameter section are in a class shape, and the large diameter section has a larger diameter than the diameter of the small diameter section, and the bottom surface of the top wall has a bottom surface of the inner ring surrounding the aperture hole and a bottom surface of the inner ring a bottom surface of the outer ring of the outer circumference, the bottom surface of the inner ring and the bottom surface of the outer ring are in a class shape, and the height of the bottom surface of the inner ring is higher than the bottom surface of the outer ring. Each focusing groove has an inner surface of the adjusting groove disposed along the axial direction. 'and a vertical focusing surface of the focusing groove, define each adjustment, the vertical distance between the inner surface of the groove and the axis is the focal length of the focusing groove. The lens unit is mounted in the lens barrel, and includes a first lens and a second lens along the axis from the object end to the imaging end. The first lens is placed on the small ring of the lens ring of the 201038992 path. In the segment, and the second lens is received in the large diameter section of the +-snake wall, the first lens has a pair of effective diameter regions in which the aperture hole is disposed on the axis of the crucible 4, and a surrounding is effective In the bearing area of the track area, the Chengqing Γ 曰 曰 Λ 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 及 及 及 及 及 及 及 及 及 及 及 及 及The top surface of the outer ring is of a class shape, and the degree of the top surface of the inner ring is higher than the top surface of the outer ring γ, and the distance between the outer surface of the first lens and the line is the first radius. The length of a radius is less than the pitch of the focusing slot. The effect of the transition is that the focal length of the focusing slot is greater than the first radius, and the top wall of the lens barrel and the (four)-lens are in a class shape such that the focusing grooves and the first lens are at a height along the axis. Partially overlapping to reduce the overall height of the lens unit. The above and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. Before the present invention is described in detail, it is to be noted that in the following description, the halogen-like elements in the valley are denoted by the same reference numerals. Referring to Figures 3 and 4, one of the lens devices of the present invention which can reduce the height includes a lens barrel 2, a lens unit 3 and a light shielding unit 4. The lens barrel 2 is used for the lens unit 3 and the light shielding unit 4 to define an object end and an imaging end at opposite ends of the axis L', and the lens barrel 2 includes 5 clothes disposed around the 5 axis L' The ring wall 2 is connected to the top edge of the ring wall 2 and defines a top wall 23 of the aperture 22, and a plurality of focusing grooves 24 formed on the outer peripheral surface of the top wall 23 at intervals. 201038992 The ring wall 2i _ face has a small diameter section 211 ′ along the axis L, and a large diameter section 212 disposed along the axis and the line L in the direction of the small diameter section 2 ιι 胄 near the imaging end, The small diameter section 211 and the large # section 212 are in a class shape, and the large diameter section 212 has a larger diameter than the small diameter section 211. The bottom surface of the top wall 23 has a bottom surface of the inner ring surrounding the aperture 22 and an outer ring bottom surface 232 surrounding the outer circumference of the bottom surface 231 of the inner ring. The inner and outer ring bottom surfaces 231, 232 are of a class shape, and the height of the inner ring bottom surface 231 is higher than the height of the outer ring bottom surface 232. ^ ..... Each adjustment (four) 24 has a focus adjustment groove 242 disposed along the axis L, in the direction of the focus adjustment slot, 241, and perpendicular to the inner surface 241 of the focus adjustment slot, defined in each focus adjustment slot The vertical distance between the surface 241 and the axis L is the focal length d, ° "the lens unit 3 is split in the lens barrel 2, along the axis L, and sequentially includes the - mirror from the object end to the imaging end. Μ 31, a second lens 32, a third lens 33 and a fourth lens 34. The sinusoidal lens 31 is received in the small diameter section 211 of the ring wall 21 of the lens barrel 2, and the second lens 32 is accommodated. In the large diameter section 212 of the annular wall 21, y «the first lens 31 has a pair of effective k-zones 311' to which the aperture hole 22 is disposed, and a bearing area 312 surrounding the effective diameter zone 311. The diameter region 311 has a bottom end surface 313 facing the second lens 32. The sin area 312 has a pair of outer ring top surfaces 314 corresponding to the inner ring top surface 231 of the inner ring bottom surface 231, and an outer ring top surface 315 corresponding to the outer surface 232 of the outer ring. An outer ring bottom surface 316 disposed opposite the outer ring 6 201038992 top surface 315, and a diagonal inner ring bottom surface 317 between the outer ring bottom surface 316 and the effective diameter region 311 bottom end surface 313. The outer ring top surfaces 314, 315 are in the shape of a class, and the inner ring top surface 314 has a height higher than the outer ring top surface 315. The oblique inner ring bottom surface 317 is inclined from the outer to the inner end (the outer ring bottom surface 316 and the oblique The inner bottom surface 317 is provided for the second lens 32 to abut. The light shielding unit 4 includes a first light shielding film 41 sandwiching the first lens 31 and the top wall 23 of the lens barrel 2 from the object end to the imaging end. a second light shielding sheet 42 interposed between the second and third lenses 32, 33, and a third light shielding sheet 43 interposed between the third and fourth lenses 33, 34. The outer circumference of the first lens 31 is defined. The distance from the surface to the axis L is a first radius φ , the length of the first radius φ ′′ is smaller than the pitch d of the focusing slot, and in the preferred embodiment, the adjustment of the focusing slots 24 The focal length 242 is lower than the outer ring top surface 315 of the first lens 31 against the g 312, that is, the focusing grooves 24 are disposed on the outer circumference of the first lens 31, so that the (four) 21 of the lens barrel 2 The top wall 23 effectively reduces the overall height of the lens device with sufficient flesh thickness. & defines the bottom end surface 313 of the effective diameter region 311 at the axis l The bottom end center point c', in the preferred embodiment, the outer ring bottom surface 316 of the bearing area 312 is lower than the bottom end center point of the effective diameter area 311. That is, the first lens 31 is The effective diameter area 311 pushes the object end to reduce the overall thickness of the lens device. ^ Define the first axis of the second lens 31 of the second lens and the axis L, the distance is the second radius shirt, the radius Φ Γ length is less than the The radius Φ2 of the second lens 32, which is smaller by the first radius Φ1, can provide a sufficient thickness of the ring wall 21 of the lens barrel 2 to maintain the structural strength of the lens barrel 2. In summary, by adjusting the arrangement relationship between the components, the lens device as a whole is lowered and the relative thickness of the lens barrel 2 and the ring wall 21 are taken into consideration while the relative relationship is being adjusted. The focusing grooves are disposed on the outer circumference of the first lens 31. The focusing grooves 24 partially overlap the height of the first lens 31 along the axis L′, and the lens barrel 2 is The first lenses 31 are all in a class shape to lower the height of the lens device. In addition, the height of the outer ring bottom surface 316 of the first lens 31 bearing area 312 is lower than the bottom end center point c of the effective diameter area 311, so that the effective diameter area 311 is raised as high as possible to minimize the mirror. The distance between the top surface of the top wall 23 of the cylinder 2 and the effective diameter region 311 is set, so that the object of the present invention can be achieved. However, the above description is only a preferred embodiment of the present invention. The implementation of the invention, that is, the simple equivalent changes and modifications made by the scope of the invention and the content of the invention are still within the scope of the patent of the invention. FIG. 1 is an exploded perspective view, FIG. 2 is a cross-sectional side view and an overall height; FIG. 3 is a view similar to FIG. 1 illustrating the height reduction of the present invention. A preferred embodiment of the lens assembly; and FIG. 4 is a view similar to FIG. 2 illustrating the group 201038992 relationship and overall height of the preferred embodiment.
9 201038992 【主要元件符號說明】 2 /rjc …鏡肉 314… ….内圈頂面 21 *"1. …環壁 315 ·· …外圈頂面 211 - …小徑段 316 · •…外圈底面 21 2… -…大徑段 317·· …。斜内圈底面 22'… •…光圈孔 3 2 "…。 …第二鏡片 2 3……· ••頂壁 3 3 …*1 …第二鏡片 231 ……内5哀底面 3 4 "… …弟四鏡片 232… …外環底面 4 … ..-遮光單元 24·…· …調焦槽 41... •…第一遮光片 241… …調焦槽内面 42*···· …·第二遮光片 242… •…調焦止面 43 …·· …第三遮光片 3……. …鏡片單元 L9…… …轴線 31 ^ -…第一鏡片 d，… …調焦槽徑距 311 …有效徑區 φ 1， ••第一半徑 312 ……承罪區 φ 2 …。； …第二半徑 3 13… …底端面 C9 ,,… -…底端面中心點 109 201038992 [Description of main component symbols] 2 /rjc ...mirror meat 314.... inner ring top surface 21 *"1. ...ring wall 315 ··...outer ring top surface 211 - ... small diameter section 316 · •... Ring bottom surface 21 2... -... large diameter section 317··. Inclined inner ring bottom 22'... •... aperture hole 3 2 ".... ...the second lens 2 3...·•• top wall 3 3 ...*1 ...the second lens 231 ......the inner 5 lie bottom 3 4 "...the fourth lens 232...the outer ring bottom surface 4 ... ..- shading Unit 24·...·...focusing groove 41... •...first light shielding sheet 241...focusing groove inner surface 42*······second light shielding sheet 242... •...focusing surface 43 ...· · ...the third visor 3............the lens unit L9......the axis 31 ^ -...the first lens d,...the focus groove pitch 311 ...the effective track area φ 1, •the first radius 312 ... ...the conviction area φ 2 .... ;...second radius 3 13... bottom end face C9 ,,... -... bottom end center point 10