1312063 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種可調整光軸的光學裝置，特別是 指一種具有偏心式光軸調整機構的光學觀測裝置。 【先前技術】 如圖1、2所示，為現有一種裝設於一多功能數位望遠 鏡1的光學觀測裝置2。該光學觀測裝置2具有一殼體21 、一裝設於該殼體21内的内建鏡頭22,及設置於該殼體 21外的增倍鏡頭23。該殼體21具有一螺紋孔211，該内建 鏡頭22具有一圍繞一第一光轴XI且對應該螺紋孔211的 第一光孔221。該增倍鏡頭23是與該殼體21鎖接，並具有 一圍繞一第二光軸X2且對應該螺紋孔211的第二光孔231 ’及一可與該螺紋孔211配合螺接的外螺紋232。 組裝該光學觀測裝置時，是將該内建鏡頭22組裝於該 殼體21内，該增倍鏡頭23藉由該外螺紋232與該螺紋孔 211螺接於該殼體21外。理想狀況下，該第一光軸χι與該 第二光軸X2是重合的，然而’由於該内建鏡頭22、該增倍 鏡碩23、該殼體21等組件生產製造及組裝皆引入了大量的 塑勝射出製造尺寸公差與組裝公差，導致該第一、第二光 軸XI、X2偏離程度難以掌握而超出規格，產品不良率較高 〇 為提高該第一、第二光軸XI、X2的重合度，必須提高 各零組件加工的尺寸精度並降低組裝誤差，方可減少該= —、第二光軸X1、X2的偏離程度，惟，此舉將使組件=生 5 1312063 產成本大幅提高，產品價格無法降低而不具競爭力。 【發明内容】 因此，本發明之目的，即在提供一種低成本且光軸重 合度高的具有偏心式光軸調整機構的光學觀測裝置。 於是’本發明具有偏心式光軸調整機構的光學觀測裝 置是包含一固定座、一第一鏡頭，及一第二鏡頭單元。 該固定座具有一被一座圍繞面包圍界定出的座孔。該 第一鏡頭是設置於該固定座的一侧，並具有一圍繞一第一 光軸且對應該座孔的第一光孔。該第二鏡頭單元是設置於 該固定座相反於該第一鏡頭的一側，並包括一具有一第一 光孔的第二鏡頭，及一外圍繞面，該第二光孔是圍繞一第 二光軸且對應該座孔，該外圍繞面是圍繞一外圍軸線且可 與該座圍繞面配合連接而使該第二鏡頭連接於該固定座， 該外圍轴線與該第二光轴是呈偏心設置。 藉此，可有效降低製造組件成本與不良率，且提高生 產效率。 【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較佳實施例的詳細說明中，將 楚的呈現。 ^ 如圖3、4、6所示，分別是本發明具有偏心式光輛 整機構的光學觀測裝置3 —較佳實施例裝設於—多功能數 位望遠鏡4的頂視示意圖、該光學觀測裝^ 3的立體分 丁-圖，及該較佳實施例裝設於該多功能數位望遠鏡 1312063 一局部侧面剖視示意圖。該多功能數位望遠鏡4具有二望 遠鏡筒41，及一液晶顯示幕42。該光學觀測裝置3包含一 中空的殼體31、一第一鏡頭32、一偏心環33、一第二鏡頭 34 ’及一感光元件35。 該殼體31具有一形成於前端部的固定座311、一容室 312,及二樞接部313。該固定座311具有一圍繞一固定軸 線L1的座圍繞面314、一被該座圍繞面314包圍界定出且 連通該容室312的座孔315、一由該殼體31的前端部朝該 容室312凹陷且連接該座圍繞面314呈環狀的擋止面316, 及一沿控向貫通該座孔315的補膠缺口 317。該等樞接部 313是分別形成於該殼體31右、左兩相反側，可供該等望 遠鏡筒41樞接。 該第一鏡頭32是設置於該容室312内而位於該固定座 311的一側，並具有一圍繞一第一光軸C1且對應該座孔 315的第一光孔321，及一沿該第一光轴C1設置而對應該 座孔315的第一鏡片組322。 參閱圖4、5、6’其申’圖5是該偏心環33之立體圖 。該偏心環33是可轉動地穿套於該座孔315内，並具有一 圍繞一外圍軸線L2的外圍繞面331、一與該外圍繞面331 相月δ又置的内圍繞面332、一形成於該内圍繞面332的内螺 紋333、—被該内圍繞面332圍繞而界定的偏心孔334，及 一自該外圍繞面331 一端沿徑向朝外延伸且呈環狀的凸緣 335。 該外圍繞面331可與該座圍繞面314接觸配合，使該 7 1312063 補膠缺口 317對應該外圍繞面331。該内圍繞面332是圍繞 一内圍軸線L3，該外圍軸線L2與該内圍軸線L3是呈偏心 設置（見圖5) ’該偏心環33是藉由該内螺紋333與該第二 鏡頭34螺接。該凸緣335的直徑大於該座孔315的孔徑， 且對應該擋止面316。 該第二鏡頭34是連接於該固定座311，且位於該第一 鏡頭32的相反側，並具有圍繞一第二光軸C2且對應該座 孔315的第二光孔341、一沿該第二光軸C2設置且對應該 座孔315的第二鏡片組342，及一圍繞該第二光孔341且可 與該内螺紋333配合螺接的外螺紋343。本實施例中，該第 二鏡頭34實質上是一增倍望遠鏡頭，且該第二鏡頭34與 該偏心環33可定義為一第二鏡頭單元36。 該感光元件35是位於該容室312内且對應該第一鏡頭 32，而該第一鏡頭32是位於該第二鏡頭34與該感光元件 35之間。 將該第一鏡頭32、該感光元件35組裝於該容室312内 時，理想狀況是該第一光軸C1與該固定軸線L1重合，然 而，該第一鏡頭32與該殼體31塑膠射出製造及組裝均有 公差’各公差累積後將導致該第一光軸C1與該固定軸線 L1有一偏離量。接著，將該偏心環33與該第二鏡頭34鎖 接在一起，該内圍轴線L3與該第二光軸C2即可視為重合 。繼續’將該第二鏡頭34連同該偏心環33可轉動且可拆 卸地套接於該固定座311，該外圍軸線L2與該固定轴線u 即可視為重合。當該偏心環33相對該殼體3 1繞該外圍車由 8 1312063 線L2轉動時，該内圍袖線L3是相對該外圍袖線L2轉動， 即該第二光軸C2相對該固定轴線L1轉動，該第二光轴C2 與該第一光軸C1的偏離量同時產生變化。 當光線依序穿過該第二鏡頭34及該第一鏡頭32而投 射至該感光元件35，該感光元件35可感應影像，生產線作 業員先在該座孔315附近的外側面上貼一條彩色膠帶作標 記點A (圖未示）。當轉動該偏心環33，該第—光抽ci與 該第一光轴C2的偏離量產生變化，該感光元件35感應的 結果亦產生變化，藉此，可將該第二光軸C2與該第一光軸 C1.的偏離量調整至一定的範圍内。此時，作業員在該第二 鏡頭34上對應標記點A的位置再貼上另一條彩色膠帶作標 記點B (圖未示）。 由於該第一鏡頭34與該偏心環33並非與該座孔315 螺接，因此，作業員可同時直接取下該第二鏡頭34與該偏 心環33，並於鄰近該座孔315的座圍繞面314、擋止面316 呈階梯狀位置處點上一圈均勻的第一黏膠5，然後將該第二 鏡頭34連同該偏心環33再度套入該座孔3丨5，且令該標記 點A對應該標記點B，此時，該第一黏膠5是位於該座圍 繞面314、該偏心環33的外圍繞面331之間，及該播止面 316、該偏心環33的凸緣335之間。靜置1分鐘後，該偏 ^環3 3已黏、於該固定座31丨的座孔315内，作業員即可 旋下該第二鏡頭34,並拿掉標記點a、b的彩色膠帶後調 整步驟完成。為了讓該偏心m 33可更穩固地與該殼體31 結合’作業員可再以-第二黏膠（圖未示）滴入該補膠缺 9 1312063 口 317補強，使該第二黏膠是位於該補膠缺口 317而黏合 該外圍繞面331與該固定座11。本實施例中，該内圍軸線 L3與該外圍軸線L2偏離量的設計，是依據該第一鏡頭32 、該第二鏡頭34，及該殼體31等各組件塑膠射出製造公差 、組裝公差累積計算而得出，且該第一黏膠5、該第二黏膠 是相同材質的黏膠。 經由以上的說明，可以將本發明的優點歸納如下： 藉由該偏心環33的内圍轴線L3與外圍軸線L2的偏心 設置，該外圍繞面331與該座圍繞面314可轉動地接觸配 合，且該内螺紋333與該外螺紋343螺接，當該偏心環33 轉動時’該第二光ϋ C2可相對該固定轴線L1轉動，進而 調整該第二光軸C2與該第—光軸C1 &偏離量至一可接受 的範圍内，不需提高零組件的塑膠射出製造、組裝的精度 ，有效降低製造組件成本與不良率，且提高生產效又 值得說明的是：本實施例中的該偏心環33可與該第二 鏡頭34 —體成型（圖未示）而成為該第二鏡頭單元％，即 該外圍繞面331形成於該第三鏡頭34且該外圍軸線 該第二光軸C2是呈偏心設置。轉動該第二鏡頭單元3 。 使該第二光軸C2可繞該固定軸線“轉動，進而：整= -光軸C1與該第二光軸C2的偏離量而達成相同功效。/ 歸納上述，本發明之具有偏心式調整機構的 裝置，藉由該偏心環33的外圍軸線L2與内固軸 “ 設置，當轉動該偏心環33時，該第二光軸C2 j L1偏心 定軸線L1轉動，進而調整該第一光軸clj& °子該固 一磙第二光軸C2 10 1312063 的偏離量’不僅可降低成本與不良率，也提高生產效率， 故確實能達到發明之目的。 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圍，即大凡依本發明申請專利 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】 圖1是現有一種光學觀測裝置之立體分解示意圖； 圖2是該光學觀測裝置裝設於一多功能數位望遠鏡的 一局部側面剖視示意圖； 圖3是本發明具有偏心式光軸調整機構的光學觀測裝 置的一較佳實施例裝設於一多功能數位望遠鏡的頂視示意 圖； 圖4是該較佳實施例的立體分解示意圖； 圖5是該較佳實施例的一偏心環之立體圖，說明一外 圍軸線與一内圍軸線具有一偏離量；及 圖6是該較佳實施例裝設於該多功能數位望遠鏡的一 局部側面剖視示意圖^ 11 1312063 【主要元件符號說明】BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an optical device that can adjust an optical axis, and more particularly to an optical observation device having an eccentric optical axis adjustment mechanism. [Prior Art] As shown in Figs. 1 and 2, there is a conventional optical observation device 2 mounted on a multi-function digital telescope 1. The optical observation device 2 has a housing 21, a built-in lens 22 mounted in the housing 21, and a multiplier lens 23 disposed outside the housing 21. The housing 21 has a threaded hole 211 having a first aperture 221 surrounding a first optical axis XI and corresponding to the threaded aperture 211. The multiplier lens 23 is locked to the housing 21 and has a second optical hole 231 ′ surrounding a second optical axis X2 and corresponding to the threaded hole 211 and an externally engageable screw hole 211 Thread 232. When the optical observation device is assembled, the built-in lens 22 is assembled in the casing 21, and the multiplier lens 23 is screwed to the outside of the casing 21 by the external thread 232 and the screw hole 211. Ideally, the first optical axis 重 is coincident with the second optical axis X2, however, since the components of the built-in lens 22, the multiplier 23, the housing 21, etc. are manufactured and assembled, A large number of plastic injections produce dimensional tolerances and assembly tolerances, resulting in a degree of deviation of the first and second optical axes XI, X2 that are difficult to grasp and exceed specifications, and the product defect rate is higher, so that the first and second optical axes XI, The degree of coincidence of X2 must increase the dimensional accuracy of each component and reduce the assembly error, so as to reduce the degree of deviation of the =-, second optical axis X1, X2, but this will make the component = raw 5 1312063 production cost Significantly increased, product prices can not be reduced and not competitive. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an optical observation apparatus having an eccentric optical axis adjustment mechanism which is low in cost and high in optical axis coincidence. Thus, the optical viewing apparatus having the eccentric optical axis adjusting mechanism of the present invention comprises a fixing base, a first lens, and a second lens unit. The mount has a seat bore defined by a surrounding surface. The first lens is disposed on one side of the fixing base and has a first optical hole surrounding a first optical axis and corresponding to the hole. The second lens unit is disposed on a side of the fixing seat opposite to the first lens, and includes a second lens having a first optical hole, and an outer surrounding surface, wherein the second optical hole is surrounded by a first lens a second optical axis and corresponding to the seat hole, the outer surrounding surface is surrounding a peripheral axis and is engageable with the surrounding surface of the seat to connect the second lens to the fixed seat, the peripheral axis and the second optical axis are It is eccentric. Thereby, the manufacturing module cost and defective rate can be effectively reduced, and the production efficiency can be improved. [Embodiment] The foregoing and other technical contents, features and advantages of the present invention will be described in the following detailed description of the preferred embodiments. As shown in FIGS. 3, 4 and 6, respectively, an optical observation device 3 having an eccentric light-adjusting mechanism according to the present invention is a top view of a multi-functional digital telescope 4, which is mounted on the optical observation device. A three-dimensional split-graph of the ^3, and a partial side cross-sectional view of the preferred embodiment mounted on the multi-function digital telescope 1312063. The multifunction digital telescope 4 has a telephoto lens barrel 41 and a liquid crystal display screen 42. The optical observation device 3 includes a hollow housing 31, a first lens 32, an eccentric ring 33, a second lens 34' and a photosensitive member 35. The housing 31 has a fixing base 311 formed on the front end portion, a chamber 312, and two pivoting portions 313. The fixing base 311 has a seat surrounding surface 314 around a fixed axis L1, a seat hole 315 defined by the seat surrounding surface 314 and communicating with the chamber 312, and a front end portion of the housing 31 faces the space The chamber 312 is recessed and connected to the annular stop surface 316 of the seat surrounding surface 314, and a glue gap 317 extending through the seat hole 315. The pivoting portions 313 are respectively formed on opposite sides of the right and left sides of the casing 31 for pivotal connection of the telescope barrels 41. The first lens 32 is disposed in the cavity 312 on one side of the fixing base 311, and has a first optical hole 321 surrounding a first optical axis C1 corresponding to the hole 315, and a The first optical axis C1 is disposed to correspond to the first lens group 322 of the seat hole 315. Referring to Figures 4, 5, and 6', FIG. 5 is a perspective view of the eccentric ring 33. The eccentric ring 33 is rotatably sleeved in the seat hole 315, and has an outer surrounding surface 331 surrounding a peripheral axis L2, and an inner surrounding surface 332 which is adjacent to the outer surrounding surface 331. An internal thread 333 formed in the inner surrounding surface 332, an eccentric hole 334 defined by the inner surrounding surface 332, and a flange 335 extending radially outward from an end of the outer surrounding surface 331 . The outer surrounding surface 331 can be in mating engagement with the seating surface 314 such that the 7 1312063 filling gap 317 corresponds to the outer surrounding surface 331. The inner surrounding surface 332 is disposed around an inner circumference axis L3, and the outer circumference axis L2 and the inner circumference axis L3 are eccentrically disposed (see FIG. 5). The eccentric ring 33 is formed by the internal thread 333 and the second lens 34. Screwed. The flange 335 has a larger diameter than the seat hole 315 and corresponds to the stop surface 316. The second lens 34 is connected to the fixing base 311 and located on the opposite side of the first lens 32, and has a second optical hole 341 surrounding a second optical axis C2 corresponding to the hole 315, along the first The second optical axis C2 is disposed and corresponds to the second lens group 342 of the seat hole 315, and an external thread 343 surrounding the second optical hole 341 and engageable with the internal thread 333. In this embodiment, the second lens 34 is substantially a double-lens telescope head, and the second lens 34 and the eccentric ring 33 can be defined as a second lens unit 36. The photosensitive element 35 is located in the chamber 312 and corresponds to the first lens 32, and the first lens 32 is located between the second lens 34 and the photosensitive element 35. When the first lens 32 and the photosensitive element 35 are assembled in the chamber 312, it is ideal that the first optical axis C1 coincides with the fixed axis L1. However, the first lens 32 and the housing 31 are plastically injected. Manufacturing and assembly have tolerances. The accumulation of tolerances will result in a deviation of the first optical axis C1 from the fixed axis L1. Then, the eccentric ring 33 and the second lens 34 are locked together, and the inner circumference axis L3 and the second optical axis C2 can be regarded as coincident. Continuing, the second lens 34, together with the eccentric ring 33, is rotatably and removably sleeved to the mount 311, and the peripheral axis L2 and the fixed axis u are considered to coincide. When the eccentric ring 33 is rotated relative to the housing 31 by the 8 1312063 line L2 around the peripheral vehicle, the inner circumference sleeve L3 is rotated relative to the peripheral sleeve line L2, that is, the second optical axis C2 is opposite to the fixed axis. L1 rotates, and the amount of deviation of the second optical axis C2 from the first optical axis C1 changes at the same time. When the light is sequentially projected through the second lens 34 and the first lens 32 to the photosensitive element 35, the photosensitive element 35 can sense an image, and the production line operator first puts a color on the outer side surface of the seat hole 315. The tape is marked A (not shown). When the eccentric ring 33 is rotated, the amount of deviation between the first light extraction ci and the first optical axis C2 changes, and the result of the sensing by the photosensitive element 35 also changes, whereby the second optical axis C2 can be The amount of deviation of the first optical axis C1. is adjusted to a certain range. At this time, the operator attaches another color tape to the position of the corresponding point A on the second lens 34 as a mark point B (not shown). Since the first lens 34 and the eccentric ring 33 are not screwed to the seat hole 315, the operator can directly remove the second lens 34 and the eccentric ring 33 at the same time, and surround the seat adjacent to the seat hole 315. The surface 314 and the stop surface 316 are spotted with a uniform first adhesive 5 at a stepped position, and then the second lens 34 is again fitted into the seat hole 3丨5 together with the eccentric ring 33, and the mark is marked. Point A corresponds to point B. At this time, the first adhesive 5 is located between the surrounding surface 314 of the seat, the outer surrounding surface 331 of the eccentric ring 33, and the positioning surface 316 and the convexity of the eccentric ring 33. Between the edges 335. After standing for 1 minute, the biasing ring 3 3 is adhered to the seat hole 315 of the fixing seat 31丨, and the operator can unscrew the second lens 34 and remove the colored tape of the marking points a and b. The post adjustment step is completed. In order to allow the eccentricity m 33 to be more firmly integrated with the housing 31, the operator can refill the viscous defect 9 1312063 port 317 with a second adhesive (not shown) to make the second adhesive The outer peripheral surface 331 and the fixing base 11 are bonded to the adhesive gap 317. In this embodiment, the design of the inner circumference axis L3 and the peripheral axis L2 is based on the manufacturing tolerances and assembly tolerances of the first lens 32, the second lens 34, and the housing 31. It is calculated that the first adhesive 5 and the second adhesive are viscose of the same material. Through the above description, the advantages of the present invention can be summarized as follows: By the eccentric arrangement of the inner circumference axis L3 of the eccentric ring 33 and the peripheral axis L2, the outer surrounding surface 331 and the seat surrounding surface 314 are rotatably in contact with each other. And the internal thread 333 is screwed to the external thread 343. When the eccentric ring 33 rotates, the second aperture C2 is rotatable relative to the fixed axis L1, thereby adjusting the second optical axis C2 and the first light. The deviation of the axis C1 & to an acceptable range does not need to improve the precision of the plastic injection manufacturing and assembly of the component, effectively reduce the manufacturing component cost and the defect rate, and improve the production efficiency. It is worth noting that: this embodiment The eccentric ring 33 can be integrally formed with the second lens 34 (not shown) to become the second lens unit %, that is, the outer surrounding surface 331 is formed on the third lens 34 and the peripheral axis is the second The optical axis C2 is eccentrically disposed. The second lens unit 3 is rotated. The second optical axis C2 can be rotated around the fixed axis, and the same effect can be achieved by the deviation of the optical axis C1 from the second optical axis C2. / In summary, the eccentric adjustment mechanism of the present invention is provided. The device is disposed by the peripheral axis L2 of the eccentric ring 33 and the inner solid axis. When the eccentric ring 33 is rotated, the second optical axis C2 j L1 is rotated by the eccentric axis L1, thereby adjusting the first optical axis clj& The deviation amount ' of the second optical axis C2 10 1312063 can not only reduce the cost and the defect rate, but also improve the production efficiency, so it can indeed achieve the purpose of the invention. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective exploded view of a conventional optical observation device; FIG. 2 is a partial side cross-sectional view of the optical observation device mounted on a multi-function digital telescope; FIG. 3 is an eccentric view of the present invention. FIG. 4 is a perspective exploded view of a preferred embodiment of the present invention; FIG. A perspective view of the eccentric ring, wherein a peripheral axis has an offset from an inner circumference axis; and FIG. 6 is a partial side cross-sectional view of the preferred embodiment mounted on the multi-function digital telescope. 11 1112063 [Main component symbols Description]
L1 ••… 33••… 偏心ί衣 L2 •…. …外圍軸線 331… —外圍繞面 L3 •.… …内圍軸線 332… •…内圍繞面 C1 …. ----第 光轴 333… •…内螺紋 C2… …·第二光軸 334… …*偏心孔 3 ....... •…光學觀測裝置 335… …·凸緣 31…… •…殼體 34.··.· •…第二鏡頭 311… •…固定座 341… •…第二光孔 312… •…容室 342… •…第二鏡片組 313… •柩接crP 343… -----外螺紋 314… •…座圍繞面 35•…· .....感光元件 315… •…座孔 36…· …第二鏡頭單元 316… —播止面 4…… …多功能數位望遠鏡 317… •…補膠缺口 41 •… ••…望遠鏡筒 32…… •…第一鏡頭 42··... _ 液日日顯不幕 321 ··· •…第一光孔 5…… ••…第一黏膠 322… •…第一鏡片組 12L1 ••... 33••... Eccentricity L2 •.......peripheral axis 331...——outer surrounding surface L3 •....inner inner axis 332... •...inner surrounding surface C1 .... ----optical axis 333 ... •...Internal thread C2...·Second optical axis 334...*Eccentric hole 3........................Optical observation device 335...Flange 31...•...Shell 34.··. • •...Second lens 311... •...Fixed seat 341... •...Second light hole 312... •...Limit chamber 342...•...Second lens group 313... • 柩CrP 343... -----External thread 314 ... • Blocking surface 35•...·..... Photosensitive element 315... •... Seat hole 36...·...Second lens unit 316...——Broadcasting surface 4... Multifunctional digital telescope 317... •... Glue notch 41 •... ••... telescope tube 32... •...first lens 42··... _ liquid day is not showing 321 ··· •...first light hole 5... ••...first sticky Glue 322... •...first lens group 12