1257586 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種雷射條碼 一種具有弧形曲面之條碼閱讀裝置心锊別是關於 本發明弧形曲面多面反射鏡钍^ ^結構’藉由 裝置之掃描裝置達到適當的兄；:光射條碼閱讀 的掃描角度、以及產生較密掃描=擴展較大 【先前技術】 查,碼閱讀裝置目前已廣泛應用在各種領域中 1百貨公司、超級市場、商品賣場、物料管理·.·等場合 條瑪,%子辅助設備，藉由該 保馬閱咳衣置之辅助，使工作人員 取各項產品之價格及其它產n ^迅速且有效率地讀 :’而可達到節省人力'提昇工作效率、自動 參閱第一圖所示，其係顯示其中一 碼閱讀裝置各相關構件之配置立體 、，，王方位條 u且且版園，而第二圖 -圖中2-2斷面之剖視圖。該傳統全方 _、置1257586 IX. Description of the Invention: [Technical Field] The present invention relates to a laser bar code, a bar code reading device having a curved curved surface, and a ring-shaped curved multi-faceted mirror 钍 ^ ^ structure The scanning device of the device reaches the appropriate brother; the scanning angle of the light bar code reading, and the generation of the dense scanning = large expansion [previous technique], the code reading device has been widely used in various fields, 1 department store, supermarket , merchandise stores, material management · · · occasions such as the bar, the child sub-equipment, with the help of the horse to read cough clothes, so that the staff to take the price of each product and other production quickly and efficiently Read: 'And save manpower' to improve work efficiency, automatically refer to the first figure, which shows the configuration of each of the relevant components of a code reading device, three, and the orientation of the king, and the second, and the second Figure 2 - Sectional view of the section 2-2. The traditional all-round _, set
要是在基座殼體1之一側端配置一雷射光源投身Γ置3 可投射出雷射光束。 巧』衣直J 該雷射光源投射裝置3包括有—形成在該基座殼體1 之雷射二極體容置们i，以供配置―雷射二極體讥咖 D1〇de)。在該雷射二極體容置座u之頂部具有一凸起样 1257586 室12,在其内部可斜向地容置一第一反射鏡片31。在該 凸起槽室12之鄰近位置處，則形成有一鏡組容置室13， 並在面向於該凸起槽室12之一侧面形成有第一開槽131、 以及在面向前側方向形成有第二開槽132。 在該鏡組容置室13中配置有第二反射鏡片32、第三 反射鏡片33。該第一反射鏡片31、第二反射鏡片32、第 三反射鏡片33係依雷射光之反射角度所需而以傾斜角度 配置，以使該雷射二極體2所發出之雷射光(Laser Beam) 可分別經由該第一反射鏡片31、第二反射鏡片32及第三 反射鏡片33而由鏡組容置室13之第二開槽132投射出。 在該基座殼體1之另一側端則配置有一多面反射鏡 4(Polygon Mirror)、以及一環列反射鏡組5，該環列反射 鏡組5係配置在該多面反射鏡4與前述之第三反射鏡33 之間，且環鄰於該多面反射鏡4。該多面反射鏡4之底部 連結有一馬達41，而可在該馬達41之驅動之下而旋轉。 第三圖顯示了該傳統全方位條碼閱讀裝置之多面反 射鏡位在其中一旋轉角度時之光程示意圖，而第四圖顯示 了該傳統全方位條碼閱讀裝置之多面反射鏡位在另一旋轉 角度時之光程示意圖。其顯示雷射二極體2所發出之雷射 光順序地經由第一反射鏡片31、第二反射鏡片32及第三 反射鏡片33之後，由該第三反射鏡片33投射出一雷射光 L11至該多面反射鏡4之其中一個對應之鏡面，再由該多 面反射鏡4將該雷射光以一反射雷射光L12投射至該環列 反射鏡組5之其中一個反射鏡片。最後即可再由該環列反 1257586 射鏡組5之反射鏡片之反射而投射出一掃描雷射光至一標 的條碼（未不）’進行條碼之掃描讀取。而由於該多面反射 鏡4是由馬達41所驅動旋轉，故該雷射光L11在投射向 該多面反射鏡4時，會由該多面反射鏡4之其中一個鏡面 以不同之投射角度而投射至該環列反射鏡組5之另一反射 鏡片（如第四圖所示），如此即可產生掃描雷射光至一標的 條碼，而進行全方位之條碼掃描功能。 至於收光方面，由標的條碼所反射回來的雷射光則 由上述光程路徑之反向路徑順序地由環列反射鏡組5、多 面反射鏡4、第三反射鏡片33而產生收光雷射光，最後 再由一配置在該基座殼體1内部之聚焦鏡34聚焦投射至 該基座殼體1底部適當位置處之光感測元件（例如光電二 極體Photo Diode)，以接收該收光雷射光，並配合一控制 電路解讀出該條碼之資訊。 【發明内容】 本發明所欲解決之技術問題 在前述採用多面反射鏡之傳統條碼掃描技術中’雖 然提供了較佳之條碼資訊讀取效果，但其掃描角度仍受到 限制，且收光聚光之效果仍有待改善。究其原因，乃在於 該多面反射鏡之結構都是採用平面型反射面之設計，致使 該多面反射鏡之反射面在進行雷射光線之反射時，其反射 角度會受到該平面型反射面之限制。 例如以具有四面反射鏡之多面反射鏡結構中，其每 1257586 一個反射面所能反射之雷射光線必定小於180度角。而在 雷射光線之收光聚光效果方面，其多面反射鏡之反射面僅 負責單純的雷射光線反射之功能，並無聚光之效果。 因此實有必要針對前述傳統條碼閱讀裝置之多面反 射鏡之缺點予以改良，以改善該多面反射鏡在掃描角度受 到限制以及雷射光線之聚光效果。 緣此，本發明之主要目的即是提供一種雷射條碼閱 讀裝置之多面反射鏡之結構改良，以突破傳統多面反射鏡 在掃描角度方面之限制。 本發明之另一目的是提供一種具有較佳雷射光線聚 焦效果之雷射條碼閱讀裝置，其多面反射鏡在反射雷射光 線時，具有較佳之聚光效果。 本發明解決問題之技術手段 本發明為解決習知技術之問題所採用之技術手段係 將條碼閱讀裝置之多面反射鏡結構設計成具有弧形曲面之 結構，其弧形曲面可為球面、曲面或非球面之結構。 本發明對照先前技術之功效 經由本發明所採用之技術手段，可以使得雷射條碼 閱讀裝置之掃描裝置達到適當的雷射光線聚光效果，且由 藉由該多面反射鏡之弧形曲面設計，可以突破掃描角度之 限制，使得該雷射條碼閱讀裝置得到最佳化之掃描效果。 再者，由於該曲面反射面所能反射之雷射光線可擴展到較 1257586 大的角度，故可造成產生較密掃描線投射向標的條碼之效 果，有助於標的條碼之讀取。 【實施方式】 參閱第五圖所示，其係顯示本發明具有弧形曲面之 條碼閱讀裝置之機構立體圖。在本發明之設計中，其是在 一條碼閱讀裝置之基座6之一側端配置一雷射光源投射裝 置3。該雷射光源投射裝置3亦包括有習知之雷射二極體、 數片反射鏡片，可用以投射出雷射光束。 同時參閱第六圖所示，其係顯示第五圖中相關構件 分離時之立體分解圖，第七圖係顯示本發明具有弧形曲面 之條碼閱讀裝置之頂視平面圖，第八圖係顯示本發明具有 弧形曲面之條碼閱讀裝置之前視平面圖。在該雷射光源投 射裝置3之雷射光源投射方向之位置處，配置了本發明之 多面反射鏡7，並在該多面反射鏡7與雷射光源投射裝置 3之間配置一環列反射鏡組5。該環列反射鏡組5係環列 配置在該多面反射鏡4與前述之第三反射鏡33之間。該 多面反射鏡7之底部亦與習知技術相同，連結有一馬達 41，而可在該馬達41之驅動之下以預定之轉速而旋轉。 參閱第九圖所示，其係顯示第六圖中9-9斷面之剖視 圖。在本發明之設計中，該多面反射鏡7之各個反射鏡面 係採弧形曲面之結構設計。例如在圖式中所示，該多面反 射鏡7具有四個曲面反射面7a、7b、7c、7d’每一個曲面 反射面7a、7b、7c、7d皆呈凹弧曲面。 1257586 該多面反射鏡7之各個反射鏡面之弧形曲面結構， 可以採用球面、曲面或非球面之結構。而其曲面弧度可依 該多面反射鏡之尺寸大小、雷射光源投射裝置3、環列反 射鏡組5與該多面反射鏡7之間之光程距離而決定。 該多面反射鏡7之各個反射鏡面7a、7b、7c、7d之 表面係以光學反射材料塗佈之方式形成該弧形曲面者。在 實際製作時，可以直接成型出具有反射面之反射鏡面，也 可以在一具有弧形曲面之基體表面以光學反射材料塗佈而 形成該反射鏡面。 在圖式所示之實施例中，該多面反射鏡7係包括有 四個曲面反射面7a、7b、7c、7d，每一個曲面反射面所能 反射之雷射光線可擴展到270度角。故較傳統具有四面平 面反射鏡之多面反射鏡所能達到之180度角為大。此結構 所搭配之環列反射鏡組5可包括有五個反射鏡5a、5b、5c、 5d、5e、5f，如此可造成產生較密掃描線投射向標的條碼 之效果’有助於標的條碼之讀取。 綜言之，本發明確具產業上之利用價值，且較習知 技術具有顯著的功效增進，故本發明業已符合於專利之要 件。惟以上之實施例說明，僅為本發明之較佳實施例說明， 凡精於此項技術者當可依據本發明之上述實施例說明而作 其它種種之改良及變化。然而這些依據本發明實施例所作 的種種改良及變化，當仍屬於本發明之發明精神及以下所 界定之專利範圍内。 10 1257586 【圖式簡單說明】 第—圖傳統全方位條侧射置各«構件之配置 第一圖係i每+ μ _ 第三圖顯二— 斷面之剖視圖，· 鏡位㈣統全方位條碼㈣裝置之多面反射 第四圖題-/ 旋轉角度時之光程示意圖； 圖中傳統全方位條碼閱 ^在另-旋轉角度時之光程示意圖，· 圖^^示本發料綠料面之條縣置之機構 !體圖； ΐ:=Γ示第五圖中相關構件分離時之立體分解圖； 圖:顯示本發明具有弧形曲面之條碼閱讀裝置之頂視 千面圖； 、 第八圖係顯示本發明具有弧形曲面之條碼閱讀装置之前視 平面圖； 第九圖係顯示第六圖中9-9斷面之剖視圖。 【主要元件符號說明】 1 11 12 13 131 132 基座殼體 雷射二極體容置座 凸起槽室 鏡組容置室 第一開槽 第二開槽 1257586If a laser light source throwing device 3 is disposed at one side of the base housing 1, a laser beam can be projected. The laser light source projection device 3 includes a laser diode housing i formed in the base housing 1 for arranging a "laser diode". A protrusion 1257586 chamber 12 is disposed on the top of the laser diode housing u, and a first reflecting lens 31 is obliquely received therein. A mirror group accommodation chamber 13 is formed at a position adjacent to the convex groove chamber 12, and a first slit 131 is formed on one side facing the convex groove chamber 12, and a front side is formed in a direction facing the front side. The second slot 132. The second reflecting mirror 32 and the third reflecting mirror 33 are disposed in the lens housing accommodating chamber 13. The first reflecting mirror 31, the second reflecting mirror 32, and the third reflecting mirror 33 are disposed at an oblique angle according to the reflection angle of the laser light, so that the laser light emitted by the laser diode 2 (Laser Beam) ) can be projected from the second slot 132 of the mirror housing accommodating chamber 13 via the first reflective lens 31 , the second reflective lens 32 , and the third reflective lens 33 , respectively. A polygon mirror 4 and a ring mirror group 5 are disposed on the other side of the base housing 1 , and the ring mirror group 5 is disposed on the polygon mirror 4 and the foregoing Between the third mirrors 33 and adjacent to the polygon mirror 4. A motor 41 is coupled to the bottom of the polygon mirror 4, and is rotatable under the driving of the motor 41. The third figure shows the optical path of the multi-faceted mirror of the conventional omnidirectional bar code reading device at one of the rotation angles, and the fourth figure shows the multi-faceted mirror position of the conventional omnidirectional bar code reading device at another rotation. Schematic diagram of the optical path at an angle. It is shown that after the laser light emitted by the laser diode 2 is sequentially passed through the first reflecting lens 31, the second reflecting lens 32 and the third reflecting lens 33, a laser beam L11 is projected from the third reflecting lens 33 to the One of the polygon mirrors 4 corresponds to a mirror surface, and the laser beam is projected by the polygon mirror 4 to the reflective mirror L of the ring mirror group 5 by a reflected laser light L12. Finally, a scanning of the bar code can be performed by projecting a scanning laser light to a target bar code (not) by reflection of the reflecting lens of the ring group 1257586. Since the polygon mirror 4 is driven to rotate by the motor 41, when the laser beam L11 is projected onto the polygon mirror 4, one of the mirror faces of the polygon mirror 4 is projected to the mirror angle at a different projection angle. The other reflective lens of the ring mirror group 5 (as shown in the fourth figure) can thus generate scanning bar light to a target bar code, and perform an all-round bar code scanning function. As for the light collection, the laser light reflected by the target barcode is sequentially received by the loop mirror group 5, the polygon mirror 4, and the third mirror 33 from the reverse path of the optical path. Finally, a focusing sensor 34 disposed inside the base housing 1 focuses the light sensing element (for example, a photodiode) at a position on the bottom of the base housing 1 to receive the receiving. Light laser light, and with a control circuit to interpret the bar code information. SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide a better bar code information reading effect in the conventional bar code scanning technology using the polygon mirror, but the scanning angle is still limited, and the light collecting and collecting is The effect still needs improvement. The reason is that the structure of the polygon mirror is designed by using a plane-shaped reflecting surface, so that when the reflecting surface of the polygon mirror is reflected by the laser light, the reflection angle of the polygon mirror is affected by the plane-shaped reflecting surface. limit. For example, in a multi-faceted mirror structure having a four-sided mirror, the laser light reflected by one reflecting surface per 1257586 must be less than 180 degrees. In terms of the light collecting effect of the laser light, the reflecting surface of the polygon mirror is only responsible for the simple reflection of the laser light, and there is no effect of collecting light. Therefore, it is necessary to improve the disadvantages of the multi-faceted mirror of the aforementioned conventional bar code reading device to improve the scanning angle of the polygon mirror and the concentrating effect of the laser light. Accordingly, it is a primary object of the present invention to provide a structural improvement of a polygon mirror for a laser bar code reading device that overcomes the limitations of conventional polygon mirrors in terms of scanning angle. Another object of the present invention is to provide a laser bar code reading device having a better laser beam focusing effect, which has a better concentrating effect when reflecting a laser beam. Technical Solution for Solving the Problems According to the present invention, the technical means for solving the problems of the prior art is to design a multi-faceted mirror structure of a bar code reading device into a structure having a curved curved surface, and the curved curved surface may be a spherical surface, a curved surface or Aspherical structure. According to the technical means adopted by the present invention, the scanning device of the laser bar code reading device can achieve an appropriate laser light collecting effect, and is designed by the curved surface of the polygon mirror. The limitation of the scanning angle can be exceeded, so that the laser bar code reading device can obtain an optimized scanning effect. Moreover, since the laser light reflected by the curved surface of the curved surface can be extended to a larger angle than 1257586, the effect of generating a bar code of the dense scanning line to the target can be caused, which helps the reading of the barcode. [Embodiment] Referring to Fig. 5, there is shown a perspective view of a mechanism of a bar code reading device having a curved curved surface according to the present invention. In the design of the present invention, a laser light source projecting device 3 is disposed at one side of the base 6 of a code reading device. The laser light source projection device 3 also includes a conventional laser diode and a plurality of reflective lenses for projecting a laser beam. Referring to the sixth figure, the figure shows the exploded view of the related components in the fifth figure, and the seventh figure shows the top plan view of the bar code reading device with curved curved surface of the present invention, and the eighth figure shows the present A front plan view of a bar code reading device having a curved curved surface is invented. At the position of the projection direction of the laser light source of the laser light source projection device 3, the polygon mirror 7 of the present invention is disposed, and a ring-shaped mirror group is disposed between the polygon mirror 7 and the laser light source projection device 3. 5. The ring-shaped mirror group 5 is arranged in a ring array between the polygon mirror 4 and the third mirror 33 described above. The bottom of the polygon mirror 7 is also identical to the prior art, and is coupled to a motor 41 which is rotatable at a predetermined rotational speed by the motor 41. Referring to the ninth figure, it is a cross-sectional view of the section 9-9 in the sixth drawing. In the design of the present invention, each of the mirror surfaces of the polygon mirror 7 is designed to have a curved curved surface. For example, as shown in the drawing, the polygon mirror 7 has four curved reflecting surfaces 7a, 7b, 7c, and 7d. Each of the curved reflecting surfaces 7a, 7b, 7c, and 7d has a concave curved surface. 1257586 The curved curved surface structure of each mirror surface of the polygon mirror 7 can adopt a spherical surface, a curved surface or an aspherical structure. The curvature of the curved surface can be determined according to the size of the polygon mirror, the distance between the laser source projection device 3, the array of mirror segments 5 and the polygon mirror 7. The surfaces of the respective mirror surfaces 7a, 7b, 7c, and 7d of the polygon mirror 7 are formed by coating the curved surface with an optically reflective material. In the actual production, the mirror surface having the reflecting surface may be directly formed, or the mirror surface may be formed by coating the surface of the substrate having the curved curved surface with an optical reflective material. In the embodiment shown in the drawings, the polygon mirror 7 includes four curved reflecting surfaces 7a, 7b, 7c, and 7d, and the laser light reflected by each of the curved reflecting surfaces can be expanded to an angle of 270 degrees. Therefore, it is larger than the 180 degree angle that can be achieved by a multi-faceted mirror having a four-sided planar mirror. The ring-column mirror group 5 to which the structure is matched may include five mirrors 5a, 5b, 5c, 5d, 5e, 5f, which may cause the effect of generating a bar code of a dense scanning line to project the target'. Read it. In summary, the present invention has industrial use value and has significant power enhancement over conventional techniques, so the present invention has met the requirements of the patent. However, the above embodiments are merely illustrative of the preferred embodiments of the present invention, and those skilled in the art can make various other modifications and changes as described in the above embodiments of the present invention. However, various modifications and changes made in accordance with the embodiments of the present invention are still within the scope of the invention and the scope of the invention as defined below. 10 1257586 [Simple description of the diagram] The first section of the traditional omnidirectional strip side is placed in the first part of the configuration of the components. Each + μ _ third picture shows the cross-sectional view of the section, · Mirror position (four) unified all-round Bar code (4) Multi-faceted reflection of the device The fourth picture - / Schematic diagram of the optical path at the angle of rotation; The traditional omnidirectional bar code in the picture shows the optical path of the other - rotation angle, · Figure ^ ^ shows the green surface of the output The body of the county; body image; ΐ: = Γ shows the three-dimensional exploded view of the relevant components in the fifth figure; Figure: shows the top view of the bar code reading device with curved surface of the present invention; 8 is a front plan view showing a bar code reading device having a curved curved surface of the present invention; and a ninth drawing showing a cross-sectional view taken along line 9-9 in the sixth drawing. [Main component symbol description] 1 11 12 13 131 132 Base housing Laser diode housing seat Raised slot chamber Mirror group accommodation chamber First slot Second slot 1257586
2 雷射二極體 3 雷射光源投射裝置 31 第一反射鏡片 32 第二反射鏡片 33 第三反射鏡片 34 聚焦鏡 4 多面反射鏡 41 馬達 5 環列反射鏡組 5a、5b、5c、5d、5e、5f 反射鏡 6 基板 7 多面反射鏡 7a、7b、7c、7d 曲面反射面 122 Laser diode 3 Laser source projection device 31 First reflecting mirror 32 Second reflecting lens 33 Third reflecting mirror 34 Focusing mirror 4 Polygon mirror 41 Motor 5 Ring mirror group 5a, 5b, 5c, 5d, 5e, 5f mirror 6 substrate 7 polygon mirror 7a, 7b, 7c, 7d curved surface 12