TWM291161U - A barcode scanner with a 2D laser scanning mechanism - Google Patents

A barcode scanner with a 2D laser scanning mechanism Download PDF

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Publication number
TWM291161U
TWM291161U TW94210979U TW94210979U TWM291161U TW M291161 U TWM291161 U TW M291161U TW 94210979 U TW94210979 U TW 94210979U TW 94210979 U TW94210979 U TW 94210979U TW M291161 U TWM291161 U TW M291161U
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Taiwan
Prior art keywords
scanning
mirror
laser
scanning mechanism
dimensional
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TW94210979U
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Chinese (zh)
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Dong-Cherng Wen
Chien-Hua Lin
Ti-Kuang Hou
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Chien-Hua Lin
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Priority to TW94210979U priority Critical patent/TWM291161U/en
Publication of TWM291161U publication Critical patent/TWM291161U/en

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M291161 八、新型說明: 【新型所屬之技術領域】 本創作屬於一種掃描及讀取條碼之裝置,哕 射平面掃描機構’將原本呈點狀之雷射;變 掃描二維條碼。 乾圍亚使件本條碼掃描器可直接用以 【先前技術】 轉描二係利用圖十所示之旋 雷 面鏡本 碼用之掃描線。然仔細探2 光點轉變為讀取條 射掃描機構’其缺點在於體積難以縮:,以乍為 f的馬達及旋轉多面鏡將會造成振動、且南速轉 題。而使用顫鏡之條碼掃描器,為磁丨=佳等問 鏡面部位進行掃描動作,則必力驅動顫鏡之 ==!:::使得鏡面的震盪頻率降低,射=二之 構’都只能將雷射&雷射掃描機 維條碼時(見圖十二),已,因此在掃描_ 2 (如圖十三所示)。若欲以旋多的高度範園 =====的定位 之條碼掃描蝴伽,辑_ 上述應用於條碼掃描器之習用雷射掃描機構、正因為各有其缺 M291161 陷,因此直到目前為+ 是採用價格低廉、且具有高光源器件方面, 搭配之下、使得本創作射導體雷射’在這樣 輕巧以及成本低廉等優田機構具有製作簡易、體積 掃描光源。㈣並且可作為—維與二維條碼掃描器^ 而本創作之主要目的,就是取代的命運。 是採用價格低廉、且具且在讀光源器件方面,則 的 【新型内容】 圖一所 示本平面掃描機構的組成及掃描投射方式如 ίί ί動元件所提供者。為便於揭示本創β 月白以電磁力作為驅動源,惟本創作 動、梳狀致動器、或是以f方式,如靜㈣、熱致驅 ㈣n &以其他致動讀所提供者,皆為本創作之 ’下列說 於電磁力 請求標的 雷射平面掃描光源之產生方式,首先鮮導 出的雷射光束作為投射光源,铁彳纟、、' 1所务 盘後_電磁式微型掃描反射鏡2 束林斷崎描至财的位置上,而達到平面掃 ίίϊί:圖四及圖五所示、雷射掃描光點之尺寸大小 ^體㈣射模組1 t中的聚焦透鏡15進行調整,夢 面掃描光源之解析度。 τ门正措以挺升雷射千 作,#射平面掃描機構16所產生的平面掃描光源可 ’、、、-准條碼掃描器之掃描光源’並且可以擴大條碼的有效讀取 M291161 範圍(如圖七所示)。 j八所式、雷射平面掃 直接作為二維條碼掃描器之掃描光源 ^切,可 如、當雷射平面掃描機構運用在 ::’可在雷射光束進行平面掃描的過程中,利用半導二:t! 進而提ΐ成方向—致且平行雷射掃描線, 杈同田射先之反射訊號在判讀時的簡易性。 平構可藉由控制電磁式微型掃描反射鏡__ 把°°之間的轉’調整雷射平面掃描絲之顧大小。 踩創作之雷射平面掃描機構搭配訊號讀取模組即構成本條 碼知描③,該訊號讀取模組可採㈣套件。 錢本條 【實施方式】 你碼掃描敗雷射平面掃描機構如圖―所示,該機構包含-?丄二糾轉體雷射獅1,以及由高頻電磁式微卿描反射鏡 電磁式微歸描反射鏡3所結合而成的二維掃描機構。來 自體雷射模組卜並且經過調變以及聚焦控制的雷射光束, 射在反覆扭轉的高㈣磁式微型掃描反射鏡2 i,並使得 束在某肖度範圍内不斷地進行掃描動作,其掃描頻率依據 ^田光源之解析度,有時必須達到數千個赫兹(Hz)以上。緊接 ί刑的距離範®内’再讓該f射掃描線投射於低頻電磁式 :以:描反射鏡3,而低頻電磁式微型掃描反射鏡3的作動方式, 乃=是不斷地來回反覆扭轉’不過其扭轉的頻率較慢、僅在 ,〜60Hz之間。雷射光在經過高頻電磁式微型掃描反射鏡2、以及 氏頻電磁式微型掃描反射鏡3之後,將會由原本的光點先轉變為 M291161 掃描線、然後再轉變成平面掃描光源。 圖二為電磁式微型掃描反射鏡的運作 轉U理右改變電流方向,則扭轉方向亦隨之改變。 计:鏡(見圖三)乃依據該電磁感應原理所設 扭力樑11連^位m反的具有—固定.1G,並以 目I丨/5 扭力“ 11的軸心方向扭轉,若改變電流方向, 二=3將會朝相反方向扭轉。當電流方向的切換頻率(或 射鏡面12的轉震歸況翻最佳化。 磁轉多面鏡(見圖十)或顫鏡(見圖十—)相較,電 打描反射鏡的設計既無佔據空間的驅動馬達,也沒有任 其峨_»瓣低,因J 反射鏡在耗電量生能。而電磁式微型掃描 降低電流、並且節絲增加,__的數量而達到 力i:型==轉‘;,,除了以文中所提之電磁 他的致動改用電力、熱致驅動、梳狀致動器、或是由其 或是由微贱射卜成微對倾反魏可為單—反射鏡’ 組,四及凸透鏡15搭配而成的半導體雷射模 適-凸透鏡15 ’才關使得·光束《成-適當大小 8 M291161 如圖五所示為雷射掃描 射14置於凸透鏡15的聚制整,二是將半導體雷 透鏡後,將會形成平行的雷射j上)’n射光經過凸 凸透鏡15的聚焦位置播* ^巧、其一疋將丰¥體雷射14置於 三是將半導體_ 14 ),則雷射光束將補收縮。其 則雷射光透鏡15 _、位置前方(d < 〇, 平面上形成不同尺寸ί雷身 種調整方式^將可在條碼掃描 掃描機構所呈現的平面掃t S1、/2)。由於本雷射平面 藉由調整半導體雷射14 1 "、疋由雷射光束掃描而成,因此可 掃描平*丄==5提 以供判讀,如此將可大幅增加條碼的有效專回條碼掃描器 圖八為利用雷射平面掃描機構削 圖,不_t職骑描贿m^、之示意 鏡3的作細树======反射 雷射平面掃描機構可藉由控锻磁式微 =度,以配合-維條碼或二 :反戈1驅動電 描器之_麟,騎平輯描光源讀碼與掃 由於所採用的半導體雷射具有半 Frequency MGdulatiGn)舰,3輪調變(Hi曲 源,中,可直接從通過半導體雷4=1:面掃描光 卿或關閉雷射光束’藉以形成方向-致^ M291161 描線(如圖九所示),如此一來、當雷射平面掃描機構運用在二維 條碼之掃描器時,將可提高雷射反射訊號在判讀時的㈣易性。 【圖式簡單說明】 圖一為雷射平面掃描機構的構造以及運作方式 圖一為電磁式微型掃描反射鏡的驅動原理。 圖二為電磁式微型掃描反射鏡之構造。 圖四為半導體雷射模組 圖五為雷射掃描光點之尺寸調整方式 圖六為利用雷射平面掃描機構作為—維 圖七為以雷射平面掃描機構掃描-維條石^、^描光源 圖八為利用雷射平面掃描機構作為二^條,,取範圍 圖九為利用雷射平面掃描機構掃描二H之掃描光源 直投射轨跡 、准條碼時的雷射水平與垂 C 2,碼掃描器所使用之旋轉多面於 二為習用條碼掃描器所使用之、兄 圖十二為習用條碼掃描器運用於—維士 圖十三為以習用條碼掃描器掃描—维^掃描示意圖 、、隹條碼之有效讀取範園M291161 VIII. New description: [New technical field] This creation belongs to a device for scanning and reading barcodes. The scanning plane scanning mechanism 'will be a point-like laser; the scanning two-dimensional barcode. Dry Bracketing This barcode scanner can be used directly. [Prior Art] The Rotating II system uses the scanning line for the Rotary mirror shown in Figure 10. However, the 2 spot changes to the scanning scanning mechanism's disadvantage is that the volume is difficult to shrink: the motor with the 乍 f and the rotating polygon mirror will cause vibration and a south speed problem. The bar code scanner using the vibrating mirror scans the mirror surface for the magnetic 丨=佳等, and then drives the tremor mirror ==!::: so that the oscillation frequency of the mirror is reduced, and the radiation = two structures are only The laser & laser scanner can be bar coded (see Figure 12), so it is scanned _ 2 (as shown in Figure 13). If you want to scan the butterfly with the barcode of the positioning of the height of the circle =====, the above-mentioned conventional laser scanning mechanism applied to the barcode scanner is because of its lack of M291161, so it is + It is a low-cost, high-light-emitting device, which makes the laser beam of the present invention a simple and compact scanning light source in such a light and low-cost field. (d) and can be used as a - dimensional and two-dimensional bar code scanner ^ and the main purpose of this creation is to replace the fate. It is a low-cost, and is in the field of reading light source devices. [New content] Figure 1 shows the composition of the planar scanning mechanism and the scanning projection method as provided by the ίίί moving components. In order to reveal the electromagnetic force as the driving source, the creation of the moving, comb-like actuators, or the f-mode, such as static (four), thermal drive (four) n & other actuating readers The following is the creation of the laser plane scanning source of the electromagnetic force request. The laser beam that is freshly derived is used as the projection light source, and the shovel, '1' Mirror 2 beam slashed to the position of the wealth, and reached the plane sweep ίίϊί: Figure 4 and Figure 5, the size of the laser scanning spot size (4) the focus lens 15 in the module 1 t Adjust, the resolution of the dream surface scanning light source. The τ gate is being measured by the rising laser, and the plane scanning light source generated by the shooting plane scanning mechanism 16 can ',,, and - scan the light source of the bar code scanner' and can enlarge the effective reading of the bar code M291161 range (such as Figure 7)). j eight-type, laser plane sweep directly as a scanning source of the two-dimensional barcode scanner ^ can be used, for example, when the laser plane scanning mechanism is used in:: 'can be used in the plane scanning of the laser beam, using half Guide 2: t! Further raises the direction of the parallel laser scanning line, and the simplicity of the reflection signal of the same field in the same field. The flat configuration can be adjusted by adjusting the electromagnetic micro-scanning mirror __ to turn the angle between °°. The laser scanning mechanism of the treading is matched with the signal reading module to form the barcode description 3. The signal reading module can adopt the (four) kit.钱本条 [Implementation] Your code scans the laser scanning plane scanning mechanism as shown in the figure - the mechanism contains -? 丄 纠 纠 体 雷 雷 雷 ,, and the high-frequency electromagnetic micro-mirror mirror electromagnetic micro-recognition A two-dimensional scanning mechanism in which mirrors 3 are combined. The laser beam from the body laser module and subjected to modulation and focus control is incident on the reverse-twisted high (four) magnetic micro-scanning mirror 2 i, and the beam is continuously scanned in a certain degree of range. The scanning frequency depends on the resolution of the field source, and sometimes must be several thousand Hertz (Hz) or more. Immediately after the distance of the penis, the 'radiation line' is projected on the low-frequency electromagnetic type: to: the mirror 3, and the low-frequency electromagnetic micro-scanning mirror 3 is operated in a continuous manner. Twisted 'but the frequency of its twist is slower, only between ~60Hz. After passing through the high-frequency electromagnetic micro-scanning mirror 2 and the low-frequency electromagnetic micro-scanning mirror 3, the laser light will be converted from the original spot to the M291161 scan line and then converted into a planar scanning source. Figure 2 shows the operation of the electromagnetic micro-scanning mirror. When the current direction is changed, the direction of the twist changes.计: The mirror (see Fig. 3) is based on the principle of electromagnetic induction. The torsion beam 11 is connected with the m-reverse of -1G, and is twisted in the axial direction of the head I 丨/5 torque "11". Direction, two = 3 will be reversed in the opposite direction. When the current direction switching frequency (or the polarization of the mirror surface 12 is optimized). Magnetic multi-face mirror (see Figure 10) or vibrating mirror (see Figure 10 - In contrast, the design of the electric mirror does not occupy the space of the drive motor, nor does it have any 峨»» low, because the J mirror consumes electricity, while the electromagnetic micro-scan reduces current and the wire increases. , the number of __ reaches the force i: type == turn ';,, in addition to the electromagnetism proposed in the text, his power is changed to electricity, thermally driven, comb actuator, or by or The micro-spray is formed into a micro-pair, and the anti-Wei can be a single-mirror group, and the semiconductor laser-fitted convex lens 15' is formed by the combination of the four and the convex lens 15. The light beam is made into an appropriate size 8 M291161 as shown in FIG. The laser scanning radiation 14 is placed on the convex lens 15 and the second is the semiconductor laser lens. Parallel laser j)) The 'n-beam light is transmitted through the focus position of the convex-convex lens 15 , and the laser beam is placed on the third to be the semiconductor _ 14 ), and the laser beam will shrink. Then the laser lens 15 _, the position in front (d < 〇, the formation of different sizes on the plane ί Ray type adjustment method ^ will be able to scan the plane presented by the bar code scanning scanning mechanism t S1, /2). Because of the laser The plane is adjusted by scanning the semiconductor laser 14 1 ", and is scanned by the laser beam, so it can scan the flat *丄==5 for interpretation, so that the barcode can be greatly increased. In order to use the laser plane scanning mechanism to cut the picture, it is not a _t job to draw a bribe m^, the mirror 3 of the fine tree ====== reflection laser plane scanning mechanism can be controlled by forging magnetic micro = degrees, To match the -dimensional bar code or two: anti-go 1 drive electric scanner _ lin, ride the flat picture source reading and sweep due to the semiconductor laser used to have a semi-Frequency MGdulatiGn) ship, 3 rounds modulation (Hi Qu Yuan, In, can be formed directly from the semiconductor lightning 4 = 1: surface scanning light or turning off the laser beam Trace the line to the M291161 (as shown in Figure IX). As a result, when the laser scanning mechanism is applied to the scanner of the 2D barcode, the (4) ease of the laser reflection signal can be improved. Brief Description of the Drawings Figure 1 shows the structure and operation of the laser scanning mechanism. Figure 1 shows the driving principle of the electromagnetic micro-scanning mirror. Figure 2 shows the structure of the electromagnetic micro-scanning mirror. Figure 4 shows the semiconductor laser scanning mode. Figure 5 is the size adjustment method of the laser scanning spot. Figure 6 is the use of the laser plane scanning mechanism as the -dimensional figure 7 for scanning with the laser plane scanning mechanism - the stripe stone ^, ^ the light source figure 8 is the use of laser The plane scanning mechanism is used as a two-piece strip, and the range is shown in Figure 9. The scanning plane of the scanning light source of the second H is scanned by the laser plane scanning mechanism to directly project the trajectory, the laser level and the vertical C 2 when the bar code is used, and the rotation of the code scanner is used. Multifaceted to the second is used by the conventional bar code scanner, the brother figure 12 is the conventional bar code scanner is applied - the Vistula 13 is scanned by the conventional bar code scanner - the scanning chart of the dimension ^, the bar code has Read Fan Park

Claims (1)

M291161 九、申請專利範圍: h iff用於—維及二維條碼掃描器之訪平面掃描機構,其組 -半導體雷雜組,作為投射光源;及 -組二維掃減構,心將雜t射光源 =面掃描光源;其特徵是該二維掃描機構是以反覆口 動,亚可形成二維之平面掃描光源。 轉方式驅 2.如申請專利範圍第i項之雷射平面掃 構由高頻微型掃描反射鏡以及低頻微型掃描反射=者^田機 在兩ft鏡的中央部位皆設有反射雷射光束用的金屬^膜成而 2反射鏡的兩端連接於扭力樑,扭力樑的末端則連接在固定座 3· &申請專利範圍第2項之二維掃描/機構,其中: 高頻及低頻微型掃描反射鏡的扭轉是由電磁力驅動。 4·如申請專利範圍第2項之二維掃描機構,其中… 鏡的扭轉驅動方式,亦包括靜電力、熱_動, 或由梳狀致動元件所驅動。 m 5. 如申請專利範圍第2項之二維掃描機構,其中: =型掃描反賴可為單—反射鏡,或是由微型反射鏡陣列所組 6. 如申請專利範圍第1項之雷射平面掃描機構裝置,其中: =導體雷射模組包含有半導體#射以及可調整聚焦位置的凸透 7. 二„描器’是由申請專利範圍第丨項之雜平面掃 it11取模組所構成’其中雷射平面掃描機構包含半導i =权組和二維掃描機構,其特徵是可以投射出平面狀的掃^ 12M291161 IX. Patent application scope: h iff is used for the scanning plane scanning mechanism of the dimensional and 2D barcode scanner, the group-semiconductor radar group is used as the projection light source; and the group 2D sweeping and subtracting structure, the heart will be mixed The light source=area scanning light source; the feature is that the two-dimensional scanning mechanism is a reverse moving, and the second surface can form a two-dimensional planar scanning light source. Rotary mode drive 2. The laser plane scan of the i-th patent scope is composed of a high-frequency micro-scanning mirror and a low-frequency micro-scanning reflection. The field is equipped with a reflected laser beam at the center of both ft mirrors. The metal film is formed and the two ends of the mirror are connected to the torsion beam, and the end of the torsion beam is connected to the fixed seat 3· & 2D scanning/mechanism of claim 2, wherein: high frequency and low frequency miniature The torsion of the scanning mirror is driven by electromagnetic force. 4. The two-dimensional scanning mechanism of claim 2, wherein the torsional driving mode of the mirror also includes electrostatic force, thermal motion, or driven by a comb actuating element. m 5. The two-dimensional scanning mechanism of claim 2, wherein: = scanning may be a single mirror or a micro mirror array. 6. As claimed in claim 1 The plane scanning mechanism device, wherein: = the conductor laser module comprises a semiconductor #射 and a convexity of the adjustable focus position. 7. The second scanner is a module for the plane scan of the first paragraph of the patent application scope. The laser plane scanning mechanism comprises a semi-conducting i=weight group and a two-dimensional scanning mechanism, which is characterized in that a planar sweep can be projected.
TW94210979U 2005-06-30 2005-06-30 A barcode scanner with a 2D laser scanning mechanism TWM291161U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108761775A (en) * 2018-06-20 2018-11-06 广州市钛码电子科技有限公司 A kind of double pendulum index glass laser scanning device
TWI770075B (en) * 2016-10-31 2022-07-11 國立大學法人福井大學 2-dimensional light scanning mirror device, its manufacturing method, 2-dimensional light scanning device and image projection device
CN114988346A (en) * 2022-04-08 2022-09-02 北京工业大学 Integrated structure of VCSEL light source and MEMS micro actuator for MEMS laser radar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI770075B (en) * 2016-10-31 2022-07-11 國立大學法人福井大學 2-dimensional light scanning mirror device, its manufacturing method, 2-dimensional light scanning device and image projection device
CN108761775A (en) * 2018-06-20 2018-11-06 广州市钛码电子科技有限公司 A kind of double pendulum index glass laser scanning device
CN114988346A (en) * 2022-04-08 2022-09-02 北京工业大学 Integrated structure of VCSEL light source and MEMS micro actuator for MEMS laser radar

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