M410663 .. r f 【新蜇所屬之技術領域】 本創作係有關一種檢測鏡調整結構及其雷射掃描裝置，尤 指一種可隨意調整檢測鏡於任一角度的檢測鏡調整結構及其電射 掃描裝置。 • 【先前技術】 • 按’目前雷射光束印表機LBP(Laser Beam Print)所用之雷 射掃描裝置LSU(Laser Scanning Unit)，係利用一高逮旋轉之多 面鏡(polygon mirror)操控雷射光束之掃描動作（laser beam 籲 scanning)，如美國專利 US707917卜 US6377293、US6295116，或 如台灣專利1198966所述。 LSU係利用一半導體雷射光源發出雷射光束（laserbeam)，先 經由一準直鏡(c〇llimat〇r)形成平行光束，再經由一光圈 (aperture) ’而光束再經過一柱面鏡(Cyiindricai iens)聚焦後 而形成一線狀成像（line image)，再投射至一高速旋轉多面鏡上。 此高速旋轉多面鏡上均勻連續設置有多面反射鏡，其恰位於 或接近於上述線狀成像（line image)之焦點位置。藉由旋轉多面 鲁鏡控制雷射光束之投射方向，當連續之複數反射鏡在高速旋轉時 可將射至一個反射鏡上之雷射光束延著主掃描方向之平行方向以 同一轉角速度(angular velocity)偏斜反射至一 f0線性掃描鏡 片上’而線性掃描鏡片係設置於多面鏡旁側，其可為單件式 鏡片結構(single-element scanning lens)或為二件式鏡片結 構。此f 0線性掃描鏡片之功能在於使經由旋轉多面鏡上之反射 鏡反射而射入f0鏡片之雷射光束能聚焦成一橢圓型光點並投射 在一感光鼓（ph〇t〇recept〇r drum)上，並達成線性掃描（scanning linearity)之要求。 2 LSU在正式啟動掃描動作前，會有預備掃描動作。在預備掃描 動作時’超出掃描區的雷射光束會被光束檢測鏡(此細㈣如 mirror，BD mirror)反射至光感測器，而被光感測器所接收。當 光感測器接㈣雷射絲時，域測器會同時發丨信號至雷射光 束印表機進行信號處理，雷射光束印表機再重新啟動LSU，正式開 始掃描動作。 由於LSU的雷射光束掃描至感光鼓的路徑很長，導致雷射光 束印表機體魏大。騎低雷射光束印錢賴積，LSU可透過 加裝一至二個長型的光束反射鏡使雷射光束的路徑對折，如此可 減小雷射光束印表機的體積。 過去LSU操作時，由於運轉時的振動會使光束反射鏡角度有 所偏移，造成入射至光束反射鏡的雷射光束反射角度偏轉。當LSU 掃描超出掃描區時，此光束反射鏡角度的偏轉也會造成投射到光 束檢測鏡的雷射光束在水平方向的位置有些微誤差。因而被光束 檢測鏡反射的雷射光束即無法準確的投射至光感測器被光感測器 偵測。因此，此時需要調整光束檢測鏡之角度，使雷射光束能準 確投射至光感測器。光束檢測鏡的調整結構，可參閱美國專利 US6690498B2 以及 US7433106B2。 本創作提供一種光束檢測鏡之調整結構，其可更簡便調整光 束檢測鏡’以改善習知光束檢測鏡調整結構結構複雜的問題。 【新型内容】 本創作之目的為使光束檢測鏡易於調整，且簡化光束檢測鏡 調整結構之結構。 為達上述目的’本創作提供一種雷射掃描裝置，包含：一基 座；一檢測鏡調整結構，設置於該基座上，具有一底座包含：一 M410663 1 » _ . 第面，具有一凸塊凸出於該第一面，該凸塊將該第—面定義出 -固定侧及-活動侧；以及-第二面；—反射鏡，設置於該第二 面上；其中，該凸塊與該基座接觸，且該固定側係彈性地固定於 該基座’如此藉由在-第-軸方向上施加一作用力於該活動侧， • 可在該第一軸方向上調整該反射鏡之角度。 $雷轉絲置更包含—祕元件，-端m定霞基座，另 一编觸壓於該底座之該固定側。其中該彈性元件為彈片。 該底座之該活動側具有一通孔，貫穿該底座，該底座之該活 • 動侧係藉由一螺絲穿過該通孔而固定於該基座上，進而在該第一 軸方向上調整該反射鏡之角度。 該通孔為弧形，如此該反射鏡之角度更可在一旋轉方向上進 行調整。 該底座之該固定側包含一凸柱，且該基座包含一孔洞，該孔 洞之位置對應於該凸柱，當該檢測鏡調整結構設置於該基座上 時，該凸柱係卡合於該孔洞内。 該凸柱之橫斷面為橢圓形。 Φ 透過本創作之檢測鏡調整結構’可易於調整設置於檢測鏡調 •整結構上之酬鏡肢，且檢測鏡可赃為任-角度，具有眾多 的優點。 【實施方式】 為使本創作更加明確詳實，兹列舉較佳實施例並配合 下列圖不’將本創作之結構及其技術特徵詳述如後： 圖1為本創作雷射掃描裝置1之一實施例之結構俯視圖。 本創作雷_描裝置(LSU)係顧於雷射光束印細中。參閱 圖1 ’本創作雷射掃描裝置(LSU)l包含：可發射出光束的-個光 4 M410663 t r · » 源11、用以轉換來自光源丨丨之光束成為平行於此準直鏡12之軸 線之光束的一個準直鏡12、用以收歛平行光束的一個柱面鏡丨3、 利用馬達（圖未顯示）驅動以旋轉並反射來自柱面鏡13之光束之一 個旋轉多面鏡(polygon mirr〇r)14、用以將旋轉多面鏡丨4所反射 之光束聚焦成為在一個感光鼓（圖未顯示）的表面上沿著一掃描線 具有適富直彳k之光點—個f 0透鏡15、16、以及位於f 0透鏡 16與感光鼓之間的光程上用以將通過f 0透鏡16之光束反射至感 光鼓之影像反射鏡17。藉由控制上述光源之開/關狀態得以在感光 φ 鼓上形成一個預定靜電潛像。 此外，本創作雷射掃描裝置丨更包含一個光束反射鏡18以及 個同步感測卓元（sync detecting unit) 20。 光束反射鏡18,設置於二個f0透鏡15、16的光路之間，可 將光路反折，縮小雷射光束印表機的體積。 同步感測單元20包含光束檢測鏡21、檢測鏡調整結構30、 聚焦透鏡(condenser lens)22以及光感測器23。光束檢測鏡21 放置於檢測鏡調整結構3〇上。檢測鏡調整結構30係位於f6>透 φ鏡16與聚焦透鏡22之間。光束檢測鏡21用以反射來自f 0透鏡 ' 16的光束至聚焦透鏡22’而聚焦透鏡再將光束聚焦於光感測器23 -上。其中，聚焦透鏡22的設置為選擇性設置。 上述各元件除了檢測鏡調整結構3〇外，其餘各元件之結構與 功月b皆與習知雷射掃描裝置相同，在此省略其說明。 圖2A及2B為本創作檢測鏡調整結構3〇之一實施例之結構 圖，其中圖2A為檢測鏡調整結構3〇之上視圖，圖2B為檢測鏡調 整結構30之下視圖。 參閱圖2A及2B，檢測鏡調整結構3〇包含一個底座31，具有 第一面32及第二面33。第一面32上具有一凸塊321凸出於第一 5 M410663 • t 面32’且凸塊321將第-面32分隔為一個活動侧322及一個固定 侧323。在本實施例中，凸塊321為長條狀且橫越整個第一面犯， 且第-面32自凸塊321的二長邊朝固定側323及活動侧3 逐漸平緩。 ％ .此外’第-面32上更包含一個通孔奶及一凸柱犯4。通孔 325，設置於底座31之第一面32之活動側微且貫穿底座31。凸 柱324，設置於底座31之固定側323。凸柱犯4的橫斷面可為圓 形或橢圓形，但不以此為限，也可為其它形狀。 • 底座31之第二面33 ’包含一個檢測鏡卡合單S 331可供-個 檢測鏡（圖未顯示）設置於其内。 圖3為本創作用於放置檢測鏡調整結構3〇的雷射掃描 基座19結構圖。 參閱圖3’@ 2A之檢測鏡調整結構3〇係設置於雷射掃描裝置 1之一基座19上。此基座19包含第一孔洞⑼、第二孔洞脱及 第三孔洞193。第-孔洞191的位置對應於檢測鏡調整結構3〇之 通孔325位置。第二孔洞192 _置對應於檢測鏡調整結構3〇之 鲁凸柱324位置。第三孔洞193之功能說明於下。 • 圖4A及圖4B為本創作檢測鏡調整結構30放置於雷射掃描裝 置1基座19之組合圖，其中圖4A為分解圖，圖4B為組合圖。 參閱圖4A及4B，檢測鏡調整結構30與雷射掃描裝置丨基座 19的組合係先將檢測鏡調整結構3〇之通孔325與基座μ之^一 孔洞191對應，同時凸柱324(參閱圖2B)與基座19之第二孔洞192 對應。接著，將檢測鏡調整結構3〇放置於基座19上，如此底座 31之凸塊321(參閱圖2B)會與基座19接觸，且凸柱324會卡合於 基座19之第二孔洞192。由於凸柱324的橫斷面為橢圓形因此 卡合於第二孔洞192時會使底座31與基座19之結合更加牢固且 6 M410663 * · 不會左右移動。 著’將底座31之固定侧323彈性地固定於基座19。本實施 ’、用雜元件35’-端固定於基座19，另一端觸壓於底座 之固相323所對應之第二面33上。如此藉由在—第一軸方向 ^即圖中的X轴)上施加—作用力F於該活動側微，可在該第一 轴方向上調整該反射鏡21之角度。 ^述的彈性元件35可實施為彈片，也可為其它具有相同功能 一。且利用螺絲36穿過彈片所具有之孔洞351與基座19之M410663 .. rf 【Technical field of Xinyi】 This creation is about a kind of detection mirror adjustment structure and its laser scanning device, especially a detection mirror adjustment structure and its electric scanning which can adjust the detection mirror at any angle at will. Device. • [Prior Art] • Press the laser scanning device LSU (Laser Scanning Unit) used in the current laser beam printer LBP (Laser Beam Print) to control the laser with a high-speed rotating polygon mirror. The laser beam is scanned, as described in U.S. Patent No. 7,707, 729, U.S. Patent 6, 729, 729, U.S. Pat. The LSU uses a semiconductor laser source to emit a laser beam, which is first formed into a parallel beam via a collimating mirror (c〇llimat〇r), and then passes through an aperture 'the beam' and then passes through a cylindrical mirror ( Cyiindricai iens) focuses on a line image and projects it onto a high-speed rotating polygon mirror. The high-speed rotating polygon mirror is uniformly and continuously provided with a polygon mirror which is located at or close to the focus position of the above line image. By rotating the multi-faceted mirror to control the projection direction of the laser beam, when the continuous plurality of mirrors rotate at a high speed, the laser beam incident on one mirror can be extended in the parallel direction of the main scanning direction at the same angular velocity (angular The velocity is deflected onto a f0 linear scanning lens' while the linear scanning lens is disposed beside the polygon mirror, which may be a single-element scanning lens or a two-piece lens structure. The function of the f 0 linear scanning lens is that the laser beam reflected by the mirror on the rotating polygon mirror and incident on the f0 lens can be focused into an elliptical spot and projected onto a photosensitive drum (ph〇t〇recept〇r drum). On, and achieve the requirements of linear scanning (scanning linearity). 2 The LSU will have a preliminary scan action before the scan operation is officially started. During the preparatory scan action, the laser beam that is out of the scanning area is reflected by the beam detecting mirror (this thin (4) such as mirror, BD mirror) to the photo sensor and received by the photo sensor. When the photo sensor is connected to the (four) laser, the domain detector sends a signal to the laser beam printer for signal processing, and the laser beam printer restarts the LSU to officially start the scanning operation. Due to the long path of the LSU's laser beam scanning to the photosensitive drum, the laser beam printer body is large. By riding a low laser beam, the LSU can fold the path of the laser beam by adding one or two long beam mirrors, which reduces the volume of the laser beam printer. In the past, when the LSU was operated, the beam mirror angle was shifted due to vibration during operation, and the angle of reflection of the laser beam incident on the beam mirror was deflected. When the LSU scans beyond the scan area, the deflection of the beam mirror angle also causes a slight error in the horizontal position of the laser beam projected onto the beam inspection mirror. Therefore, the laser beam reflected by the beam detecting mirror cannot be accurately projected to the photo sensor and detected by the photo sensor. Therefore, at this time, it is necessary to adjust the angle of the beam detecting mirror so that the laser beam can be accurately projected to the photo sensor. The adjustment structure of the beam detecting mirror can be found in U.S. Patent No. 6,690,498 B2 and US Pat. No. 7,433,106 B2. The present invention provides an adjustment structure of a beam detecting mirror, which can more easily adjust the beam detecting mirror to improve the complicated structure of the conventional beam detecting mirror. [New content] The purpose of this creation is to make the beam inspection mirror easy to adjust and to simplify the structure of the beam inspection mirror adjustment structure. For the above purpose, the present invention provides a laser scanning device comprising: a base; a detecting mirror adjusting structure, disposed on the base, having a base comprising: a M410663 1 » _. The first surface has a convex a block protruding from the first surface, the bump defining the first surface - a fixed side and a - active side; and - a second side; a mirror disposed on the second surface; wherein the bump Contacting the base, and the fixed side is elastically fixed to the base' such that a force is applied to the movable side in the -axis direction, and the reflection can be adjusted in the first axis direction The angle of the mirror. The $ ray wire set further includes a secret element, and the other end is fixed to the fixed side of the base. Wherein the elastic element is a spring piece. The movable side of the base has a through hole extending through the base, and the movable side of the base is fixed to the base through a through hole, thereby adjusting the direction in the first axis The angle of the mirror. The through hole is curved so that the angle of the mirror can be adjusted in a direction of rotation. The fixed side of the base includes a protrusion, and the base includes a hole corresponding to the protrusion. When the detection mirror adjustment structure is disposed on the base, the protrusion is engaged with the protrusion Inside the hole. The cross section of the stud is elliptical. Φ Through the creation of the detection mirror adjustment structure 'Easy to adjust the mirror limbs set on the detection mirror adjustment structure, and the detection mirror can be any angle-angle, has many advantages. [Embodiment] In order to make the present invention more clear and detailed, the preferred embodiment is illustrated and the following figures are not described in detail. The structure and technical features of the present invention are as follows: FIG. 1 is one of the laser scanning devices 1 of the present invention. A top view of the structure of the embodiment. The Creative Lightning Device (LSU) is used in laser beam printing. Referring to FIG. 1 'This creative laser scanning device (LSU) 1 includes: a light that can emit a light beam 4 M410663 tr · » Source 11 for converting the light beam from the light source to be parallel to the collimating mirror 12 A collimating mirror 12 of the beam of the axis, a cylindrical mirror 3 for converging the parallel beams, a rotating polygon mirror driven by a motor (not shown) to rotate and reflect the beam from the cylindrical mirror 13 (polygon mirr) 〇r) 14. The light beam reflected by the rotating polygon mirror 聚焦4 is used to focus on a surface of a photosensitive drum (not shown) along a scanning line with a light-rich straight line k—a f 0 lens 15, 16 and an image path 17 for reflecting the light beam passing through the f 0 lens 16 to the photosensitive drum on the optical path between the f 0 lens 16 and the photosensitive drum. A predetermined electrostatic latent image is formed on the photosensitive φ drum by controlling the on/off state of the above light source. In addition, the inventive laser scanning device further includes a beam mirror 18 and a sync detecting unit 20. The beam mirror 18 is disposed between the optical paths of the two f0 lenses 15, 16 to reflex the optical path to reduce the volume of the laser beam printer. The synchronous sensing unit 20 includes a beam detecting mirror 21, a detecting mirror adjusting structure 30, a condenser lens 22, and a photo sensor 23. The beam detecting mirror 21 is placed on the detecting mirror adjusting structure 3''. The detecting mirror adjustment structure 30 is located between the f6 < φ mirror 16 and the focus lens 22. The beam detecting mirror 21 is for reflecting the light beam from the f 0 lens '16 to the focus lens 22' and focusing the lens to focus the light beam on the photo sensor 23 -. Among them, the setting of the focus lens 22 is selectively set. Each of the above elements has the same configuration and power cycle b as the conventional laser scanning device except for the detection mirror adjustment structure 3, and the description thereof is omitted here. 2A and 2B are structural views of an embodiment of the inventive detecting mirror adjusting structure 3, wherein Fig. 2A is a top view of the detecting mirror adjusting structure 3, and Fig. 2B is a bottom view of the detecting mirror adjusting structure 30. Referring to Figures 2A and 2B, the mirror adjustment structure 3 includes a base 31 having a first side 32 and a second side 33. The first face 32 has a projection 321 projecting from the first 5 M410663 • t face 32' and the projection 321 separating the first face 32 into a movable side 322 and a fixed side 323. In the present embodiment, the bumps 321 are elongated and traversing the entire first surface, and the first surface 32 gradually flattens from the two long sides of the bumps 321 toward the fixed side 323 and the movable side 3. In addition, the 'first-side 32' contains a through-hole milk and a stud. The through hole 325 is disposed on the movable side of the first surface 32 of the base 31 and penetrates through the base 31. The stud 324 is disposed on the fixed side 323 of the base 31. The cross section of the stud 4 may be circular or elliptical, but not limited thereto, and may be other shapes. • The second side 33' of the base 31 includes a detector mirror snap S 331 for the detection mirror (not shown) disposed therein. Fig. 3 is a structural view of a laser scanning susceptor 19 for creating a detecting mirror adjusting structure 3'. Referring to Fig. 3'@ 2A, the detection mirror adjustment structure 3 is disposed on one of the bases 19 of the laser scanning device 1. The base 19 includes a first hole (9), a second hole and a third hole 193. The position of the first hole 191 corresponds to the position of the through hole 325 of the detecting mirror adjusting structure 3''. The second hole 192 _ corresponds to the position of the lug 324 of the detecting mirror adjustment structure 3 . The function of the third hole 193 is explained below. 4A and 4B are a combination view of the creation detecting mirror adjusting structure 30 placed on the base 19 of the laser scanning device 1, wherein FIG. 4A is an exploded view and FIG. 4B is a combined view. Referring to FIGS. 4A and 4B, the combination of the detecting mirror adjusting structure 30 and the laser scanning device 丨 base 19 firstly corresponds the through hole 325 of the detecting mirror adjusting structure 3 to the hole 191 of the susceptor μ, and the stud 324 (See Fig. 2B) corresponds to the second hole 192 of the base 19. Next, the detecting mirror adjusting structure 3 is placed on the base 19, so that the bump 321 of the base 31 (see FIG. 2B) is in contact with the base 19, and the protruding post 324 is engaged with the second hole of the base 19. 192. Since the cross section of the stud 324 is elliptical, the engagement of the base 31 and the base 19 is more secure when the second hole 192 is engaged, and the 6 M410663* does not move left and right. The fixed side 323 of the base 31 is elastically fixed to the base 19. In the present embodiment, the end portion 35'-end is fixed to the base 19, and the other end is pressed against the second surface 33 corresponding to the solid phase 323 of the base. Thus, the angle of the mirror 21 can be adjusted in the direction of the first axis by applying a force F to the active side in the first axis direction ^, i.e., the X axis in the figure. The elastic member 35 described may be implemented as a spring piece, or may have the same function as the other. And the screw 36 is used to pass through the hole 351 and the base 19 of the elastic piece.
同193而使彈片固疋於基座ig上，而彈片的另一端觸壓 於底座3卜因此底座31之固定側323係彈地固定於基座。此時， :於底座31之第一面32自凸塊321的二長邊朝固定侧323及活 動侧322邊緣逐漸平緩，因此底座31之活動侧微會稱微輕起， 與基座19分離。 接著藉由螺絲34穿過通孔325以及第一孔洞19卜如此，透 過調整螺絲34之高度’可調整底座31的活動側323在第-軸方 向之位置，從而可調整反射鏡21之角度。 圖5A為本創作檢測鏡調整結構30之通孔325另一實施例之 結翻。圖5B為本創作檢測鏡調整結構30放置於雷射掃描裝置！ 基座19之組合圖。 參閱圖5A及5B，本創作檢測鏡調整結構3〇之通孔犯5可設 置成弧形，如此當檢測鏡調整結構30設置於雷射掃描裝置丨的基 座19時’底座31可利用螺絲34鎖固於通孔325之位置而在一旋 轉方向（如财箭頭方向）上調整，進而織設置於檢測鏡調整結 構30上之檢測鏡21角度。值得注意的是，於本實施例中底座 31係不設置凸柱324。 * 再者，透過上述弧形之通孔325，本創作檢測鏡調整結構 7 M410663 1 k 可於X軸方向及旋轉方向上任意角度調整位於檢測鏡調整結構加 上的檢測鏡21。 透過本創作之檢測鏡調整結構，可易於調整設置於檢測鏡調 整結構上之檢測鏡，且檢測鏡可調整為任一方向上任一角度，具 有眾多的優點。 μ 以上所述僅為本新型的優選實施例，對本新型而古僅 是說明性的，而非限制性的；本領域f通技術人員理^， 在本新型制要求所限定的精神和範_可對其進行許多 改變’修改’甚至等效變更，但都將落人本新型的保護範 圍内。 【圖式簡單說明】 圖1為本創作雷射掃描裝置之一實施例之結構俯視圖。 圖2A及2B為本創作檢測鏡調整結構之一實施例之結構圖， =A。為檢測鏡調整結構之上視圖，圖2B為檢測鏡調整結狀下 圖3為本創作用於放置檢測鏡調整結構的⑽基座結構圖。 圖4A及圖4B為本創作檢測鏡調整結構放置於娜基座之板 其中圖4A為爆炸圖，圖4B為组合後的圖。 口 圖5Α為賴倾測鏡機結構之舰另—實關之結構圖。 圖5Β為本創作檢測鏡調整結構放置於雷射掃描裝置基座之组a 圖。 ，° 【主要元件符號說明】 光源11 柱面鏡13 f 61 透鏡 15、16 雷射掃描裝置(LSU)l 準直鏡12 旋轉多面鏡14 8 M410663 影像反射鏡17 基座19 第二孔洞192 同步感測單元20 聚焦透鏡22 檢測鏡調整結構30 第一面32 活動側322 凸柱324 第二面33 螺絲34 孔洞351 光束反射鏡18 第一孔洞191 第三孔洞193 光束檢測鏡21 光感測器23 底座31 凸塊321 固定側323 通孔325 檢測鏡卡合單元331 彈性元件35 螺絲36In the same manner as 193, the elastic piece is fixed on the base ig, and the other end of the elastic piece is pressed against the base 3, so that the fixed side 323 of the base 31 is elastically fixed to the base. At this time, the first surface 32 of the base 31 gradually flattens from the two long sides of the protrusion 321 toward the fixed side 323 and the movable side 322, so that the movable side of the base 31 is slightly lightly separated from the base 19. . Then, by the screw 34 passing through the through hole 325 and the first hole 19, the height of the adjusting screw 34 can be adjusted to adjust the position of the movable side 323 of the base 31 in the first-axis direction, so that the angle of the mirror 21 can be adjusted. Figure 5A is a view of another embodiment of the through hole 325 of the inventive inspection mirror adjustment structure 30. FIG. 5B shows the creation of the detection mirror adjustment structure 30 on the laser scanning device! A combination of the pedestals 19. Referring to FIGS. 5A and 5B, the through hole 5 of the creation detecting mirror adjusting structure 3 can be set in an arc shape, so that when the detecting mirror adjusting structure 30 is disposed on the base 19 of the laser scanning device, the base 31 can be screwed. 34 is locked at the position of the through hole 325 and adjusted in a rotating direction (such as the direction of the arrow), and then the angle of the detecting mirror 21 disposed on the detecting mirror adjusting structure 30 is woven. It should be noted that the base 31 is not provided with a stud 324 in this embodiment. * Further, through the above-mentioned curved through hole 325, the original detecting mirror adjusting structure 7 M410663 1 k can adjust the detecting mirror 21 which is added to the detecting mirror adjusting structure at an arbitrary angle in the X-axis direction and the rotating direction. Through the detection mirror adjustment structure of the present invention, the detection mirror disposed on the adjustment structure of the detection mirror can be easily adjusted, and the detection mirror can be adjusted to any angle in any direction, which has many advantages. The above is only the preferred embodiment of the present invention, and the present invention is merely illustrative and not restrictive; the technical personnel in the art can determine the spirit and scope defined in the requirements of the novel system. Many changes have been made to 'modify' or even equivalent changes, but they will fall within the scope of this new type of protection. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing the structure of an embodiment of a laser scanning apparatus. 2A and 2B are structural diagrams of an embodiment of the adjustment structure of the creation detecting mirror, =A. In order to detect the top view of the mirror adjustment structure, FIG. 2B is a view of the detection mirror adjustment. FIG. 3 is a (10) base structure diagram for the placement of the detection mirror adjustment structure. 4A and 4B show the structure of the creation detecting mirror adjusting structure placed on the base of the base. FIG. 4A is an exploded view, and FIG. 4B is a combined view. Figure 5 is a structural diagram of the ship's other-real-closed structure. FIG. 5 is a group a diagram of the creation of the detection mirror adjustment structure placed on the base of the laser scanning device. , ° [Main component symbol description] Light source 11 Cylindrical mirror 13 f 61 Lens 15, 16 Laser scanning device (LSU) l Collimating mirror 12 Rotating polygon mirror 14 8 M410663 Image mirror 17 Base 19 Second hole 192 Synchronization Sensing unit 20 Focusing lens 22 Detecting mirror adjustment structure 30 First side 32 Moving side 322 Post 324 Second side 33 Screw 34 Hole 351 Beam mirror 18 First hole 191 Third hole 193 Beam detecting mirror 21 Light sensor 23 Base 31 Bump 321 Fixed side 323 Through hole 325 Detecting mirror engagement unit 331 Elastic element 35 Screw 36