201128288 六、發明說明： 【發明所屬之技術領域】_ 本發明涉及一種投影裝置’尤其涉及一種可用於偵測微機 電鏡片運行狀況的投影裝置。 【先前技術】 一種習知可應用於手機、個人數據助理、便攜式放映機等 電子產品中的投影裝置包括一控制器、一雷射光源驅動器、一 被機電鏡片、一微機電鏡片驅動器、一保護玻璃及一雷射光 源。當手機、個人數據助理、便攜式投影機等處於開啟或自檢 狀態時，所述投影裝置之控制器用於控制微機電鏡片驅動器及 雷射光源驅動器，所述微機電鏡片驅動器驅動微機電鏡片擺 動，用於控制輸出相對應的影像訊號的雷射光源驅動器會同時 驅動雷射光源生成並輸出具高功率的雷射光。由雷射光源輸出 的雷射光藉由微機電鏡片的擺動而以掃描線或掃描面的方式 射出並穿過保護玻璃投影於相應的投影面上。 惟，習知的投影裝置在使用過程中難以偵測微機電鏡片的 運行狀况，尤其當微機電鏡片無法擺動而停留於中央位置時， 雷射光將無法藉由微機電鏡片的擺動成為掃描線或掃瞄面此 時，雷射光將垂直於保護玻璃入射且彙聚成束狀，而該輸出的 南功率雷射光長時間的照射於易燃物或人體上容易造成火災 或灼傷事故的發生，故針對該種習知的投影裝置之缺陷有必要 研發一種可用於偵測微機電鏡片運行狀況的投影裝置。 【發明内容】 本發明之目的是針對上述習知技術存在之缺陷提供一種可 用於偵測微機電鏡#運行狀況從而可預防發生事故的投影裝 置。 201128288 為達成上述目的，本發明所提供的投影裝置包括一雷射光 源、一雷射光源驅動器、一微機電鏡片、—微機電鏡片驅動器、 一保護玻璃、一訊號偵測器及一控制器。雷射光源驅動器用以 驅動雷射光源，可擺動的微機電鏡片用以接受雷射光源的雷射 光並送出’微機電鏡片驅動器用以驅動微機電鏡片，保護玻璃 接受微機電鏡片送出的雷射光並輸出；訊號偵測器用以接受經 保護玻璃反射的雷射光並生成反饋訊號，控制器接受反饋訊號 並控制雷射光源驅動器及微機電鏡片驅動器。 如上所述’本發明投影裝置藉由訊號偵測器之設置，可以 偵測微機電鏡片的運行狀況，從而可避免因微機電鏡片不動時 引起高功率的雷射光長時間照射易燃物或人體上而引起的火 災事故或灼傷。 【實施方式】 為詳細說明本發明之技術内容、構造特徵、所達成目的及 功效’以下茲舉例並配合圖式詳予說明。 請參閲第一圖及第二圖，本發明投影裝置1〇〇包括一控制 器ίο、一雷射光源20、一雷射光源驅動器3〇、一微機電鏡片 40彳政故電鏡片驅動器50、一保護玻璃60及一訊號偵測器 70 ° 明續參閱第一圖及第二圖，本發明投影裝置1〇〇之控制器 10用以控制雷射光源驅動器-3〇及微機電鏡片驅動器5〇。所述 微機電鏡片驅動器5G用以驅動微機電鏡片4()，雷射光源驅動 益30用以驅動雷射光源20生成雷射光。當投影裝置100處於 開啟或自檢狀態時’控制器1〇分別向微機電鏡片驅動器刈及 雷射光源驅動器3〇發出相應的驅動訊號，微機電鏡片驅動器 5 〇接收到相應的驅動訊號後驅動微機電鏡片4 0並使微機電鏡 201128288 片40來回往復擺動，所述微機電鏡片4〇擺動時具有上、下兩 極限位置，即第一圖所示的上極限所在的位置及第二圖所示的 下極限所在的位置。控制器1〇同時將相應的同步驅動訊號傳 送給雷射光源驅動器3〇並使雷射光源驅動器3〇驅動雷射光源 20生成雷射光。雷射光源2〇生成之雷射光投射於往復擺動的 微機電鏡片40上。 本發明中’猎由微機電鏡片40的不斷擺動，入射的雷射 光將以掃描線或掃描面的方式由微機電鏡片4〇送出並投射於 保護玻璃60上。其中一部分雷射光穿過保護玻璃6〇投影於投 影面（圖中未示）上進而生成相應的影像。另一部分雷射光由保 護玻璃60反射，所述保護玻璃60之反射光所能達到的區域定 義為反射區域，且當微機電鏡片40擺動至上極限或下極限 時’即訊號偵測器70設置於保護玻璃60之反射區域的邊緣位 置時，可由訊號偵測器70接收並生成相應的反饋訊號。所輸 出的反饋訊號由控制器10接收，並由控制器判斷並輸出微 機電鏡片40正常運行的訊號給顯示單元（圖中未示），藉此可 使操作人員知悉投影設備處於正常運行的狀況並作下一步相 關的操作。 本發明中，當微機電鏡片40不工作而停留於中央位置時 或擺動不到位而無法使訊號偵測器70接收該部分雷射光時， 由控制器10判斷並輸出微機電鏡片40運行不正常的訊號給顯 示單元（圖中未示），藉此可使操作人員知悉投影設備處於不正 常運行的狀況並作下一步的相關操作。由上述可知，微機電鏡 片40用以接收雷射光源20的雷射光並送出，保護玻璃6〇用 以接收微機電鏡片40送出的雷射光並送出，訊號偵測器7〇用 以接受經保護玻璃60反射的雷射光並根據雷射光輸入狀況而 生成不同的反饋訊號。 201128288 本發明投影裝置100之訊號偵測器70係一圖像傳感器或 一光電二極管’並以此來接收經微機電鏡片4〇及保護玻璃6〇 反射後送出的雷射光。 如上所述，本發明投影裝置1〇〇藉由訊號偵測器之設 置’可以偵測微機電鏡片40的運行狀況，從而可避免因微機 電鏡片4G不動時引心功率的雷射光長時間照射請物或人 肢上而引起的火災事故或灼傷。 【圖式簡單說明】 第-圖為本發明投影裝置之結構示意圖。 第圖為本毛明才又衫裝置之微機電鏡片擺動至下極限時 的狀態示意圖。 【主要元件符號說明】 投影裝置 控制器 雷射光源驅動器 微機電鏡片驅動器 訊號偵測器 1〇〇 10 雷射光源 20 30 微機電鏡片 40 50 保護玻璃 60 70201128288 VI. Description of the Invention: [Technical Field] The present invention relates to a projection apparatus', and more particularly to a projection apparatus that can be used to detect the operating condition of a microcomputer. [Prior Art] A projection device that can be applied to electronic products such as mobile phones, personal data assistants, portable projectors, and the like includes a controller, a laser light source driver, an electromechanical lens, a microelectromechanical lens driver, and a protective glass. And a laser source. When the mobile phone, personal data assistant, portable projector, etc. are in an open or self-test state, the controller of the projection device is used to control the microelectromechanical lens driver and the laser light source driver, and the microelectromechanical lens driver drives the microelectromechanical lens to oscillate. The laser light source driver for controlling the corresponding image signal of the output simultaneously drives the laser light source to generate and output the laser light with high power. The laser light output by the laser light source is emitted by the scanning or scanning surface by the oscillation of the microelectromechanical lens and projected through the protective glass onto the corresponding projection surface. However, conventional projection devices are difficult to detect the operation state of the microelectromechanical lens during use, especially when the microelectromechanical lens cannot swing and stay at the center position, the laser light cannot be scanned by the microelectromechanical lens. Or the scanning surface, the laser light will be incident perpendicular to the protective glass and converge into a bundle, and the output of the south power laser light for a long time on the flammable material or the human body is likely to cause a fire or burn accident, so In view of the drawbacks of such conventional projection devices, it is necessary to develop a projection device that can be used to detect the operation of a microelectromechanical lens. SUMMARY OF THE INVENTION It is an object of the present invention to provide a projection apparatus that can be used to detect the operation of a microelectromechanical mirror # to prevent an accident from occurring in view of the above-described drawbacks of the prior art. In order to achieve the above object, the projection apparatus provided by the present invention comprises a laser light source, a laser light source driver, a microelectromechanical lens, a microelectromechanical lens driver, a protective glass, a signal detector and a controller. The laser light source driver is used to drive the laser light source, and the swingable micro electromechanical lens is used to receive the laser light of the laser light source and send the 'micro electromechanical lens driver to drive the micro electromechanical lens to protect the glass from the laser light sent by the micro electromechanical lens. And output; the signal detector is used to receive the laser light reflected by the protective glass and generate a feedback signal, the controller receives the feedback signal and controls the laser light source driver and the micro-electromechanical lens driver. As described above, the projection device of the present invention can detect the operating condition of the microelectromechanical lens by the setting of the signal detector, thereby avoiding the high-power laser light caused by the micro-electromechanical lens not being irradiated for a long time to illuminate the flammable substance or the human body. A fire accident or burn caused by the above. [Embodiment] The technical contents, structural features, objects and effects achieved by the present invention will be described in detail below with reference to the drawings. Referring to the first and second figures, the projection apparatus 1 of the present invention includes a controller ίο, a laser light source 20, a laser light source driver 3, a microelectromechanical lens 40, and a power lens driver 50. a protective glass 60 and a signal detector 70 °. Referring to the first and second figures, the controller 10 of the projection device of the present invention is used to control the laser light source driver -3 and the microelectromechanical lens driver. 5〇. The microelectromechanical lens driver 5G is used to drive the microelectromechanical lens 4(), and the laser source driving device 30 is used to drive the laser source 20 to generate laser light. When the projection device 100 is in the on state or the self-test state, the controller 1 sends a corresponding driving signal to the micro-electromechanical lens driver 刈 and the laser light source driver 3 respectively, and the MEMS lens driver 5 驱动 receives the corresponding driving signal and drives the same. The microelectromechanical lens 40 oscillates the microelectromechanical mirror 201128288 sheet 40 back and forth. The microelectromechanical lens 4 has two upper and lower extreme positions when swung, that is, the upper limit position and the second map shown in the first figure. The position of the lower limit shown. The controller 1 传 simultaneously transmits the corresponding synchronous driving signal to the laser light source driver 3 and causes the laser light source driver 3 〇 to drive the laser light source 20 to generate laser light. The laser light generated by the laser source 2 is projected onto the reciprocating oscillating microelectromechanical lens 40. In the present invention, the singer is continuously oscillated by the microelectromechanical lens 40, and the incident laser light is sent out from the microelectromechanical lens 4 in a scanning line or a scanning surface and projected onto the protective glass 60. A part of the laser light is projected through the protective glass 6〇 onto a projection surface (not shown) to generate a corresponding image. Another portion of the laser light is reflected by the cover glass 60, and the area that the reflected light of the cover glass 60 can reach is defined as a reflection area, and when the microelectromechanical lens 40 is swung to the upper limit or the lower limit, the signal detector 70 is disposed at When the edge position of the reflective area of the glass 60 is protected, the signal detector 70 can receive and generate a corresponding feedback signal. The output feedback signal is received by the controller 10, and the controller determines and outputs a signal that the microelectromechanical lens 40 is normally operated to the display unit (not shown), thereby enabling the operator to know that the projection device is in a normal operation condition. And do the next step related operations. In the present invention, when the microelectromechanical lens 40 does not work and stays in the center position or the swing is not in place to enable the signal detector 70 to receive the portion of the laser light, the controller 10 determines and outputs the microelectromechanical lens 40 to operate abnormally. The signal is given to the display unit (not shown), so that the operator can know that the projection device is in an abnormal operation state and perform the related operations in the next step. As can be seen from the above, the microelectromechanical lens 40 is configured to receive the laser light from the laser source 20 and send it out. The protective glass 6 is used to receive the laser light sent from the microelectromechanical lens 40 and sent out, and the signal detector 7 is used to receive the protection. The laser light reflected by the glass 60 generates different feedback signals depending on the state of the laser light input. 201128288 The signal detector 70 of the projection device 100 of the present invention is an image sensor or a photodiode' and receives laser light that is reflected by the microelectromechanical lens 4 and the protective glass 6〇. As described above, the projection apparatus 1 of the present invention can detect the operation state of the microelectromechanical lens 40 by the setting of the signal detector, thereby avoiding long-time exposure of the laser light of the core power when the microelectromechanical lens 4G is not moving. A fire accident or burn caused by the object or the person's limb. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a schematic structural view of a projection apparatus of the present invention. The figure is a schematic diagram of the state in which the microelectromechanical lens of the Maoming device is swung to the lower limit. [Main component symbol description] Projection device Controller Laser light source driver Micro electromechanical lens driver Signal detector 1〇〇 10 Laser light source 20 30 Microelectromechanical lens 40 50 Protective glass 60 70