200914976 掃描光束44 後級光學系統（post_〇p1：ics ) 45、45a、45b 分光鏡47 鏡面471 八、本案若有化學式時，請揭示最能顯示發明特徵的化 學式：（無） 九、發明說明： 【發明所屬之技術領域】200914976 Scanning beam 44 Post-stage optical system (post_〇p1:ics) 45, 45a, 45b Beam splitter 47 Mirror 471 8. If there is a chemical formula in this case, please reveal the chemical formula that best shows the characteristics of the invention: (none) Description: [Technical field to which the invention belongs]
Ο 本發明係有關一種顯示裝置，尤指一種利用一分光鏡 (beam splitter )使入射掃描光束分成一為穿透光束另 一為反射光束之兩道出射光束，且令其分別對應入射經過 兩個不同的後級光學糸統，而可向外投射產生一實像與一 虛像投射的晝面，藉以使一顯示裝置同時兼具可切換實像 或虛像投射模式之雙顯示使用效果者。 【先前技術】 目前市面上已廣泛使用之行動裝置，如手機、個人輔 助裝置（PDA，personal digital assistant)、掌上型 遊戲機、筆記型電腦（NB，N〇teb〇〇k)等，一般都只配備 二個顯示裝置，也就是在實像顯示裝置或虛像顯示裝置二 者之中擇一作為顯示裝置。 炎翻如ξ η’ —虛像顯示裝置1係利用虛像投射模式 來顯不晝面，其乘構一般係包含一雷射光源10 二極體（即R、G、Blaser)以發出三色雷射光=射 Ηίίί —Ϊ是先經過—前級光學系統（pre-_ics) 鏡、柱面鏡、反射鏡組或變焦鏡頭組等構件成其 It?:，間之選擇組合等，以對雷射光束1心5 先路女排或對焦㈣用功能’再經過—紐描構件13如微 200914976 機電擺動式反射鏡（MEMS mirror )等，以使雷射光束ΐι 形成掃描光束14並入射至相配合之一後級光學系統 (post-optics ) 15如線性掃描鏡片或放大鏡頭組等構件 或其中各構件之間之選擇組合等，以使掃描光束14經過該 後級光學系統15後再向外投射（出射）至使用者人眼2 上，再經由使用者人眼2的光學系統而成像於視網膜上， 以相對產生虛像投射的畫面16，即相等於使用者可在人眼 2前方看到一虛像畫面16，例如一般掛在眼部之微小顯示 裝置，其虛像晝面（16)係成像到使用者人眼2明視距離 以外的位置，通常在2m或以上，而該虛像畫面（16)以大 於60英寸螢幕為佳，即橫寬48英寸縱長36英寸（橫寬與縱 長比例約4 : 3)而形成對角線長6〇英寸或以上之螢幕 (虛像晝面），讓使用者眼睛可以很舒服地觀賞虛像晝面 (16); —般而言，使用虛像顯示装置1時，其雷射光 是要進入人眼2的鮮系統而成像於視網膜上，而為保護 人眼2不被魏光束傷害’故必難 降低至符合eye-safety的規範内。 J由町尤不 Ο 實像顯示裝置或稱投影顯示裝置（pr〇jecti〇n display device)，其應用技術已包 US 5, 920, 361 ^US 5, 966, 009 > US 61〇 7 6,426,781 1耶 6,594 _於114〇69^^^ 日本U-305710等多件專利，如圖9沉， 652 B2及 丨田杳你® 2所不，一實像顯示裝 畫面，其架構-般係包含 雷射先源3G如二色雷射二極體（即R、G、β 雷射光束31，該雷射光束一般是先經 級 先學系統（pre-optics) 32如準吉接 ^ ^ 或變焦鏡頭組等構件或其巾各構件 擇等鏡The present invention relates to a display device, and more particularly to a beam splitter that splits an incident scanning beam into two beams that are both a penetrating beam and a reflecting beam, and respectively corresponding to two incident beams. Different post-stage optical systems can project outward to produce a real image and a virtual image projected surface, so that a display device can simultaneously have a double display effect of switching between real image or virtual image projection mode. [Prior Art] Mobile devices that are widely used on the market, such as mobile phones, personal digital assistants (PDAs), handheld game consoles, notebook computers (NB, N〇teb〇〇k), etc. Only two display devices are provided, that is, one of the real image display device or the virtual image display device is selected as the display device.炎 — — — — — — — — — — — — — 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚 虚= Η Η ί ί ί Ϊ Ϊ — — 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前 前1 heart 5 first women's volleyball or focus (four) with the function 're-passing - the drawing member 13 such as micro 200914976 electromechanical oscillating mirror (MEMS mirror), etc., so that the laser beam ΐι forms the scanning beam 14 and incident to one of the matching Post-optics 15 such as a linear scanning lens or a magnifying lens group or a selected combination of components thereof, etc., so that the scanning beam 14 passes through the post-stage optical system 15 and then projects outward (exit) ) to the user's human eye 2, and then imaged on the retina via the optical system of the user's human eye 2 to relatively produce a virtual image projected image 16, that is, equal to the user can see a virtual image in front of the human eye 2 16, for example, generally hanging in the eye The microscopic display device has a virtual image plane (16) imaged to a position other than the clear distance of the user's human eye 2, usually 2 m or more, and the virtual image screen (16) is preferably a screen larger than 60 inches, that is, a horizontal width. The 48-inch vertical length of 36 inches (width and length ratio of about 4:3) forms a screen with a diagonal length of 6 inches or more (virtual image surface), allowing the user's eyes to comfortably view the virtual image surface ( 16); Generally speaking, when the virtual image display device 1 is used, the laser light is to enter the fresh system of the human eye 2 and is imaged on the retina, and to protect the human eye 2 from being damaged by the Wei beam, it is difficult to reduce to Meet the specifications of the eye-safety. J Yuki is not a real image display device or projection display device (pr〇jecti〇n display device), its application technology has been packaged US 5, 920, 361 ^ US 5, 966, 009 > US 61〇7 6,426,781 1 Yeah 6,594 _ at 114〇69^^^ Japan U-305710 and other patents, as shown in Figure 9, Shen, 652 B2 and 丨田杳 you® 2, a real image display installation, its architecture-like system contains laser The source 3G is a two-color laser diode (ie, the R, G, and β laser beam 31, and the laser beam is generally a pre-optics system such as a pre-optics lens or a zoom lens. Group or other components or their components
對雷射光束31進行平行、光路安妯h 擇、、且口寺U 經過-光掃描構件33如微機電擺動:;反==广，再 200914976 mirror 顯示裝if使雷射光束31形成掃描光束34，而依實像 配合之後級朵Ϊ,設計’該掃描光束34可先入射經過-相 杜赤ί予糸統35如線性掃描鏡片或放大鏡頭組等構The laser beam 31 is paralleled, the optical path is mounted, and the mouth U is passed through the optical scanning member 33 such as a microelectromechanical oscillation: inverse == wide, and then the 200914976 mirror display device causes the laser beam 31 to form a scanning beam. 34, and according to the real image, the design of the scanning beam 34 can be incident on the first phase - Du Du Li 糸 35 35 such as linear scanning lens or magnifying lens group
禍I铋本集f件之間之選擇組合等再向外投射，亦可不經 系统（35)而直接向外投射’以聚焦投射（出 投射之屏幕上而形成-實像畫面36，也就是設置 2後=光學系統35與否可視實際設計需要而決定，一般而 s ’刖述之虛像顯示裝置1比較上有設置一後級光學系統 35的需要性’而實像顯示裝置3則不一定。又使用實像顯 示^置3時’掃插光束34是要聚焦投射於外在之屏幕上以 顯示實像晝面36，故須考慮當時投射環境的周遭光亮，若 為保有一定的可視性，則需要較強之雷射光束31作為掃描 使用。 然’習知行動裝置如手機、PDA、掌上型遊戲機、筆 記型電腦（NB)等只配備一個顯示裝置’在使用上常產生 下列問題或缺點： < 1 >、由於虛像顯示裝置1及實像顯示裝置3二者 之間雷射光束之投射顯示模式不同，一為虛像投射模式如 圖1所示一為虛像投射模式如圖2所示；而且使用方式也 不同’如虛像顯示裝置1一般係配載或掛在眼部附近或靠 近眼部，而實像顯示裝置3 —般係放置桌面或拿在手中以 投射於外在之屏幕上；更且配合使用之後級光學系統 (post-optics ) 15、35也具有不同結構功能；因而使顯 示裝置之設計相對受到限制，無法整合成一顯示裝置而同 時能兼具虛像或實像之顯示功能，相對造成重複設置雷射 光源10、前級光學系統（pre-0ptics) 12、光掃描構件13 等構件之浪費。 < 2 >、以目前消費者使用行動裝置之多樣化情况而 言，消費者常隨時地不同而有不同之使用需求，如當只有 200914976铋I铋 The selected combination between the f-pieces is projected outward, or directly projected out of the system (35) to focus the projection (formed on the projected screen - real image 36, that is, set 2 after the optical system 35 or not can be determined according to the actual design needs, generally the virtual image display device 1 of the above description has a necessity of providing a rear stage optical system 35, and the real image display device 3 is not necessarily. When using the real image display ^ when setting 3, the sweeping beam 34 is to be focused on the external screen to display the real image surface 36, so it is necessary to consider the surrounding environment of the projection environment at that time, if it is necessary to maintain certain visibility, it is necessary to compare The powerful laser beam 31 is used as a scan. However, conventional mobile devices such as mobile phones, PDAs, handheld game consoles, and notebook computers (NB) are equipped with only one display device, which often causes the following problems or disadvantages: < 1 >, because the virtual image display device 1 and the real image display device 3 between the projection display mode of the laser beam, a virtual image projection mode as shown in Figure 1 is a virtual image projection mode as shown in Figure 2; And the manner of use is also different. For example, the virtual image display device 1 is generally loaded or hung near the eye or near the eye, and the real image display device 3 is generally placed on the desktop or held in the hand to be projected on the external screen; And the post-optics 15, 35 also have different structural functions; thus, the design of the display device is relatively limited, and cannot be integrated into a display device, and at the same time, can have a virtual or real image display function, and relatively Repeatedly setting the waste of the laser source 10, the pre-op optical system (pre-0ptics) 12, the light scanning member 13, etc. < 2 >, in the current diversification of consumer use of mobile devices, consumers often Different from time to time and with different usage needs, such as when only 200914976
顯示裝置而隨意切換選擇兩種不 致相對造成使用上之不便與困 同模式之顯示裝置功能， 擾。 計者。 本發明乃是針對上述習知技術之問題及缺點而加以設 【發明内容】 本發明主要目的乃在於提供一種可切換實像或虛像投 射模式之顯示裝置，該顯示裝置主要包含一雷射光源、一 前級光學系統（pre-optics)、一光掃描構件及/或一後 級光學系統（post-〇ptics )，其特徵在於：在該光掃描 構件之後的雷射光束光路上’設置一可切換控制之分光鏡 (beam splitter )’使掃描光束經過該分光鏡可分成兩 道不同的出射光束，一為穿透光束另一為反射光束，並相 對分開形成二不同光路，供可分別進行虛像投射或實像投 射之兩種不同模式的投射，以分別產生一實像投射或虛像 投射的畫面；藉此，使用者可隨需要而操控切換該分光 鏡，供可利用一顯示裝置而達成切換實像或虛像投射模式 之雙顯示裴置使用效果者，藉以增進顯示裝置之使用效率 及應用範圍。 本發明再一要目的乃在於提供一種可切換實像或虛像 投射模式之顯示裝置，其中該實像或虛像投射模式之畫面 顯示尺寸可設計為固定式或可調式，其係進一步利用該前 200914976 級光學系統及/或後級光學系統的光學變焦功能，以達成 投射畫面尺寸大小的縮放效果’藉以增進顯示^置之使用 效率。 【實施方式】 為使本發明更加明確詳實’兹列舉較佳實施例並配合 下列圖示，將本發明之結構及其技術特徵詳述如後： 參照圖3、4、5所示，其分別係本發明一實施例之 結構示意圖及切換成虛像投射模式與實像投射模式之示竟 圖。本發明可切換實像或虛像投射模式之顯示裝^ 4，& (x 用於各種行動裝置如手機、個人辅助裝置（PD^)、掌上 型遊戲機、筆記型電腦（NB)上，該顯示震置4具有一般 顯示裝置結構設計所需要之基本構件或模組，如依序包 含：一雷射光源40 ’例如三色雷射二極體（即R、G、B laser )以發出雷射光束41 ; 一前級光學系統 (pre-optics) 42 ’例如準直鏡、柱面鏡、反射鏡組或變 焦鏡頭組等或其組合以對雷射光束進行平行、光路安排或 對焦等；一光掃描構件（light scanning element或 device) 43，如一微機電擺動式反射鏡（mii；r〇r ) 以將雷射光束41掃描形成掃描光束44 ;及/或一相配合之 ^ 後級光學系統（P〇st-〇ptics ) 45 ( 45a或45b )如線性 掃描鏡片或放大鏡頭組等，但在本發明及其實施例中，該 後級光學系統（post-optics ) 45 ( 45a或45b )可視實 際設計之需要而設置，也就是該後級光學系統45 ( 或 45b )並非一必要性構件，可設置亦可不設置；使掃描光 束44先經過該相配合之後級光學系統（p〇st_〇ptics ) “ (45a或45b )再掃描出射或直接掃描出射至人眼2或投 射面（屏幕）上以顯示虛像畫面46a或實像晝面461)/;其 中’ δ亥雷射光源40、前級光學糸統42、光掃描構件43及‘ 級光學系統45 ( 45a或45b )等各構件或模組本身之結構 200914976 型態並不限制’可隨使用需要而選擇利用不同設計之構件 或模組’而由於上述各構件或模組本身並非本發明之特徵 所在’且各構件或模組本身之不同設計或作用功能乃可利 用現存光電技術可達成者，故於此不再贅述。 本發明顯示裝置4之主要特徵在於：在該光掃描構件 43之後的雷射光束光路上，也就是在該光掃描構件43與可 能設置之後級光學系統（如45a、45b )之間，設一可切 換控制之分光鏡（beam splitter ) 47，而藉該分光鏡47 之分光功能’使掃描光束44在經過分光鏡47時可分成兩道 不同的出射光束，一為被分光鏡47反射之反射光束48a (如圖4所示）’ 一為穿過分光鏡47之穿透光束48b (如 圖5所示）’使該反射光束48a及穿透光束48b可分別對 應入射於虛像投射模式中可能設置之後級光學系統（如圖 4所示之45a )及實像投射模式申可能設置之後級光學系 統（如圖5所示之45b);其中，反射光束48a可先經過 一對應設置之後級光學系統4 5 a或直接向外出射至使用者 人眼2上’使經由使用者人眼2的光學系統而成像於視網 膜上’以相對產生虛像投射的畫面46a，即相等於使用者 可在人眼2前方看到一虛像晝面46a如圖4所示；而穿透 〇 光束48b可先經過一對應設置之後級光學系統45b或直接 聚焦投射（出射）至欲投射之屏幕上而形成一實像晝面 46b如圖5所示。藉上述結構，使用者可隨需要操控該分 光鏡47如調整切換該分光鏡47之角度，供可利用單一顯示 裝置4而簡便切換成虛像投射模式（如圖4所示）或實像 投射模式（如圖5所示），藉以達成實像或虛像投射之雙 顯示裝置使用效果如圖6所示，而增進顯示裝置4之使用 效率及應用範圍。 再參照圖3、4、5所示，在本實施例之顯示裝置4 中’該可切換控制之分光鏡（beara splitter ) 47係設在 200914976 s玄光掃描構件43之後之掃描光束44的光路上，且以對應設 在掃描光束44之中心光軸上為最佳，也就是掃描光束係 以中心光轴X為對稱方式進行掃描，致中心光軸χ兩側之 掃描角度相等；又該分光鏡47之切換控制方式可設計成在 —第’置“I”與一第二位置“E”之間進行切換調 整，使分光鏡47之鏡面471在第一位置“ j，，時（如圖3 中以實線表示之分光鏡47)，其係與對掃描光束44之中心 光軸形成正向45度斜角之斜置狀態，以使掃描光束以可藉 ，呈正向45度斜角之分光鏡鏡面471而反射形成反射光束 j8a並入射至一可能對應設置之虛像投射模式之後級光學 ?糸/克45a如圖4所示；而分光鏡47之鏡面471在第二位置 “Π”時（如圖3中以虛線表示之分光鏡47)，其係與對 ，描光束44之中心光軸形成反向45度斜角之斜置狀態如圖 所示，但該反向斜角並不限制為45度，以使描射光束 入射至分光鏡47時無法再藉該分光鏡鏡面471而反射入射 能對應設置之虛像投射模式之後級光學系統45a如圖 ί不，也就是當分光鏡47 (或其鏡面471 )在被切換離 置“1” _，就沒有反射光束48a可先經過虛像 又、、式之後級光學系統45a或直接向外出射至使用者人 ϋ 目上，致無法相對產生虛像投射的晝面46a。至於穿透 楚一 48b，則無論該分光鏡47 (或其鏡面471 )在切換至 八空《ί置1或第二位置“π” ，該掃描光束44均可部 該分光鏡47 (或其鏡面47i )而形成穿透光束48b 4 R )於可能對應設置之實像投射模式之後級光學系統 眘#^如圖5所示）或直接向外出射；另若有需要，可在 射模式之後級光學系統45b外面或内面利用一可控 之遮幕（shutter )(圖未示），供可在虛像投射 以使用狀態時如圖4所示，可藉該遮幕（shutter ) 遮擋住穿透光束48b，使其不致向外實像投射；藉此， 200914976 使用者可隨個人使用需要而操控該分光鏡47在第一與第二 位置之間作切換調整動作，使本發明之單一顯示裝置4同 時兼具虛像投射模式（如圖4所示）或實像投射模式（如 圖5所示）之使用功能；當只有個人使用時’可切換成虛 像投射之模式如圖4所示’由於虛像投射之光學系統的光 學特性，在此模式下可視角較小，對於個人隱私具有較高 之保護性；而當想與人共享時’可切換成實像投射之模式 如圖5所示，與他人一起分早影本、照片、投影片..等多 媒體資訊。 又上述分光鏡（beam splitter ) 47可將入射之掃描 光束44分成反射光束48a與穿透光束48b兩道出射光束之 作用功能乃係一習知技術，且其中穿透光束48b與反射光 束48a的比例可設定為90% : 10%或其他比例，可依實際 需求而設定。而在本實施例中，一般係設定使反射光束 48a的比例比穿透光束48b低許多，原因為反射光束48a 是要進入人眼2的光學系統而成像於視網膜上，所以為保 護人眼不被雷射光束傷害，所以必須將進入人眼2的雷射 光束（反射光束48a )降低至符合eye-safety的規範内； 而穿透光束48b是要聚焦投射於外在之屏幕上以形成實像 畫面46b，考慮當時投射環境的周遭光亮，為保有一定的 可視性，則需要較強之雷射光束（穿透光束48b )作掃描 使用。 又本發明顯示裝置4之顯示尺寸，也就是虛像投射模 式（如圖4所示）或實像投射模式（如圖5所示）之投射 晝面46a、46b的尺寸可分別設計為固定式或可調式， 可藉由前級光學系統（pre_〇ptics) 42及/或後級光學系 統（post_optics ) 45的光學變焦，以達成投射畫面 、 46a、46b尺寸大小的縮放控制，也就是針對前級光 統42及/或後級光學系統45可設計成固定式結構而無法調 200914976 整，使投射畫面46a、46b尺寸大小固定，或設計成可調 式結構而可由顯示裝置4之外部調整，使投射畫面46a、 46b尺寸大小可隨使用者需要而在某一大小範圍中調整。The display device is free to switch between two types of display device functions that do not cause relative inconvenience and use of the same mode. Count. The present invention is directed to the above problems and disadvantages of the prior art. SUMMARY OF THE INVENTION The main object of the present invention is to provide a display device capable of switching between a real image or a virtual image projection mode, the display device mainly comprising a laser light source, a pre-optics, a light scanning member, and/or a post-optics, characterized in that a switchable light path is disposed on the laser beam path behind the light scanning member The beam splitter of the control allows the scanning beam to be split into two different outgoing beams through the beam splitter, one for the penetrating beam and the other for the reflected beam, and two separate optical paths are formed separately for the virtual image projection. Or a projection of two different modes of real image projection to respectively generate a real image projection or a virtual image projection; thereby, the user can manipulate and switch the spectroscope as needed, so that a real or virtual image can be switched by using a display device. The dual display device of the projection mode uses the effect to enhance the use efficiency and application range of the display device. Another object of the present invention is to provide a display device capable of switching between a real image or a virtual image projection mode, wherein the real image or virtual image projection mode can be designed to be fixed or adjustable, which further utilizes the prior 200914976 optical. The optical zoom function of the system and/or the rear-stage optical system is used to achieve the zoom effect of the projected picture size 'to improve the efficiency of the display. [Embodiment] In order to make the present invention more clear and detailed, the structure of the present invention and its technical features are described in detail below with reference to the following drawings: Referring to Figures 3, 4, and 5, respectively A schematic structural diagram of an embodiment of the present invention and a schematic diagram of switching to a virtual image projection mode and a real image projection mode. The invention can switch the display device of the real image or the virtual image projection mode, and the display device can be used for various mobile devices such as mobile phones, personal assistant devices (PD^), handheld game machines, and notebook computers (NB). The oscillating 4 has the basic components or modules required for the general design of the display device, such as a laser light source 40' such as a three-color laser diode (ie, R, G, B laser) for emitting laser light. a beam 41; a pre-optics 42' such as a collimating mirror, a cylindrical mirror, a mirror group or a zoom lens group, or the like, or a combination thereof for parallelizing, arranging, or focusing the laser beam; A light scanning element or device 43, such as a microelectromechanical oscillating mirror (mii; r〇r) to scan the laser beam 41 to form a scanning beam 44; and/or a matching rear stage optical system (P〇st-〇ptics) 45 (45a or 45b) such as a linear scanning lens or a magnifying lens group, etc., but in the present invention and its embodiments, the post-optics 45 (45a or 45b) Can be set according to the needs of the actual design, that is, after that The optical system 45 (or 45b) is not a necessary component and may or may not be provided; the scanning beam 44 is first scanned and then passed through the phase optical system (p〇st_〇ptics) "(45a or 45b) and then scanned or The direct scan is emitted to the human eye 2 or the projection surface (screen) to display the virtual image screen 46a or the real image plane 461)/; wherein 'the δ-Hai laser light source 40, the front-end optical system 42, the light scanning member 43 and the 'level The structure of the components of the optical system 45 (45a or 45b) or the module itself 200914976 does not limit the 'components or modules that can be selected according to the needs of the use', and since the above-mentioned components or modules are not themselves The features of the invention are located in and the different design or function of the components or modules themselves can be achieved by using the existing optoelectronic technology, and thus will not be further described herein. The main feature of the display device 4 of the present invention is that the optical scanning member is A beam splitter 47 is disposed between the light beam scanning member 43 and the optical system (e.g., 45a, 45b), and a switchable control beam splitter 47, By the splitting function of the beam splitter 47, the scanning beam 44 can be divided into two different outgoing beams when passing through the beam splitter 47, and the reflected beam 48a (shown in FIG. 4) reflected by the beam splitter 47. The transmitted light beam 48b (shown in FIG. 5) passing through the beam splitter 47 allows the reflected light beam 48a and the transmitted light beam 48b to respectively correspond to the virtual image projection mode to be set in the subsequent stage optical system (as shown in FIG. 4). 45a) and the real image projection mode may set the subsequent optical system (45b as shown in FIG. 5); wherein the reflected light beam 48a may first pass through a corresponding setting of the subsequent optical system 45 a or directly to the user The eye 2 is 'imaged on the retina via the optical system of the user's human eye 2' to produce a virtual image projected 46a, that is, the user can see a virtual image plane 46a in front of the human eye 2 as shown in FIG. As shown in FIG. 5, the penetrating beam 48b can be first placed through a correspondingly disposed subsequent stage optical system 45b or directly focused (exited) onto the screen to be projected to form a real image plane 46b. With the above structure, the user can manipulate the beam splitter 47 as needed, such as adjusting the angle of switching the beam splitter 47, so that it can be easily switched into a virtual image projection mode (as shown in FIG. 4) or a real image projection mode by using a single display device 4. As shown in FIG. 5, the use effect of the dual display device for real image or virtual image projection is as shown in FIG. 6, and the use efficiency and application range of the display device 4 are improved. Referring again to FIGS. 3, 4, and 5, in the display device 4 of the present embodiment, the switchable control beard splitter 47 is disposed on the optical path of the scanning beam 44 after the 200914976 s sinus scanning member 43. And correspondingly disposed on the central optical axis of the scanning beam 44, that is, the scanning beam is scanned symmetrically about the central optical axis X, so that the scanning angles on both sides of the central optical axis are equal; and the beam splitter The switching control mode of 47 can be designed to perform switching adjustment between - the first "I" and a second position "E", so that the mirror surface 471 of the beam splitter 47 is in the first position "j," (Fig. 3) The beam splitter 47), which is indicated by a solid line, is in an oblique state with a 45-degree oblique angle to the central optical axis of the scanning beam 44, so that the scanning beam can be split at a 45-degree oblique angle. The mirror surface 471 is reflected to form the reflected light beam j8a and is incident on a possibly corresponding virtual image projection mode. The stage optical 糸/gram 45a is as shown in FIG. 4; and the mirror surface 471 of the beam splitter 47 is "Π" in the second position ( a beam splitter 47), which is indicated by a broken line in Fig. 3, For example, the oblique state of the central optical axis of the tracing beam 44 forming an inverse 45 degree oblique angle is as shown, but the reverse oblique angle is not limited to 45 degrees, so that the diffracted beam cannot be incident on the beam splitter 47. After the spectroscopic mirror 471 is used to reflect the virtual image projection mode corresponding to the incident energy, the stage optical system 45a is not shown, that is, when the beam splitter 47 (or its mirror surface 471) is switched off "1" _, The non-reflected light beam 48a may pass through the virtual image and the subsequent optical system 45a or directly outwardly to the user's eyes, so that the virtual image projection surface 46a cannot be generated. As for the penetration of the first 48b, The beam splitter 47 (or its mirror surface 471) is switched to an empty space or a second position "π", and the scanning beam 44 can be partially formed by the beam splitter 47 (or its mirror surface 47i) to form a transmitted beam 48b. 4 R ) after the real image projection mode that may correspond to the setting, the optical system is carefully shown in FIG. 5 or directly outward; if necessary, the outer or inner surface of the optical system 45b can be used after the shooting mode. Controlled by the shutter (not shown), available for When the virtual image is projected to use the state as shown in FIG. 4, the through beam 48b can be blocked by the shutter so as not to be projected to the external real image; thereby, the user can control the splitting according to the needs of the individual. The mirror 47 performs a switching adjustment operation between the first and second positions, so that the single display device 4 of the present invention simultaneously has a virtual image projection mode (as shown in FIG. 4) or a real image projection mode (shown in FIG. 5). Function; when only used by individuals, the mode that can be switched to virtual image projection is as shown in Fig. 4. 'Because of the optical characteristics of the optical system projected by virtual image, the angle of view can be smaller in this mode, and it has higher protection for personal privacy; When you want to share with people, the mode that can be switched to real image projection is shown in Figure 5. Together with others, you can share early news, photos, slides, and other multimedia information. Further, the above-mentioned beam splitter 47 can divide the incident scanning beam 44 into two functions of the reflected beam 48a and the transmitted beam 48b, and is a conventional technique, and the transmitted beam 48b and the reflected beam 48a are transmitted. The ratio can be set to 90%: 10% or other ratios, which can be set according to actual needs. In the present embodiment, it is generally set so that the ratio of the reflected light beam 48a is much lower than that of the transmitted light beam 48b, because the reflected light beam 48a is to enter the optical system of the human eye 2 and is imaged on the retina, so that the human eye is not protected. Damaged by the laser beam, so the laser beam (reflected beam 48a) entering the human eye 2 must be lowered to meet the eye-safety specification; and the penetrating beam 48b is focused onto the external screen to form a real image. Screen 46b, considering the ambient illumination of the projection environment at that time, in order to maintain a certain visibility, a strong laser beam (penetrating beam 48b) is required for scanning. Moreover, the display dimensions of the display device 4 of the present invention, that is, the virtual image projection mode (as shown in FIG. 4) or the real image projection mode (as shown in FIG. 5) can be respectively designed to be fixed or can be respectively sized. To adjust the optical zoom of the pre-optical system (pre_〇ptics) 42 and/or the post-optics 45 (post_optics) 45 to achieve zoom control of the projected image, 46a, 46b size, that is, for the pre-level The light system 42 and/or the rear stage optical system 45 can be designed as a fixed structure and cannot be adjusted to make the projected pictures 46a, 46b fixed in size or designed as an adjustable structure and can be adjusted by the outside of the display device 4 to make a projection. The size of the screens 46a, 46b can be adjusted in a certain size range as the user desires.
使用者使用顯示裝置4時如圖3〜6所示，當使用者 只想個人使用時，則可切換該分光鏡47至虛像投射模式 (如圖4所示）’而由於虛像投射之光學系統的光學特 性，在此模式下可視角較小，對於個人隱私具有較高之保 護性；而當使用者想與其他人共享時，則可切換該分光鏡 47至實像投射杻式（如圖5所示），使多人可同時一起分 享影本、照月、投影片…等多媒體資訊；藉以解決目前習 知之行動裝置一般都只設計或提供單一種模式顯示裝置致 相對造成使用上不便與困擾的問題，並增進顯示裝置4之 使用效率及應用範圍。 & 又實際使用時，本發明之顯示裝置4結構可内建於各 種行動裝置如手機、個人輔助裝置（PDA )、 遊 機、筆記型電腦（NB)上，供可在需要時隨時開啟使用. ί可使本f月之顯示裝置4另設計成-個體如圖3所^ ίΐί要時相容之連結裝置（圖中未示）以與行動裝 置連总，以達成顯示裝置投射畫面之功能。 是二ίΞ述ί為本發明的較佳實施例’對本發明而言僅 發明限制性的；本專業技術人員理解，在本 ^修改，甚至等效變更’但都將落入本d 【圖式簡單說明】 ，^:係習知一虛像顯示裝置之結構示意圖。 =3:係習知一實像顯示裝置之結構示意圖。 =^係本發明—實施例之結構示意圖。 .係圖3所示實施例切換成虛像投射模式之示意圖。 200914976 圖5 :係圖3所示實施例切換成實像投射模式之示意圖錐 圖Θ :係圖3所示實施例虛像與實像投射模式之使用狀 立體示意圖。 【主要元件符號說明】 顯示裝置1、3、4 雷射光源ίο、'40 雷射光束11、31、41 前級光學系統（Pre-optics) 12、32、42 光掃描構件13、33、43 f、 掃描光束14、34、44 1 後級光學系統（post-optics ) 15、35、45、45a、45b 晝面 16、36、46a、46b 人眼2 分光鏡47 鏡面471 反射光束48a 穿透光束48bWhen the user uses the display device 4, as shown in FIGS. 3 to 6, when the user only wants to use it personally, the spectroscope 47 can be switched to the virtual image projection mode (as shown in FIG. 4), and the optical system is projected by the virtual image. The optical characteristics of this mode are smaller, and have higher protection for personal privacy; when the user wants to share with others, the spectroscope 47 can be switched to the real image projection mode (Fig. 5). Shown), so that many people can share multimedia information such as photos, photos, slides, etc. at the same time; to solve the current conventional mobile devices generally only design or provide a single mode display device, which is relatively inconvenient and troublesome to use. The problem is to improve the use efficiency and application range of the display device 4. & In actual use, the display device 4 of the present invention can be built into various mobile devices such as mobile phones, personal assistants (PDAs), mobile phones, and notebook computers (NB) for use at any time when needed. The display device 4 of the present month can be further designed to be a separate connector (not shown) as shown in FIG. 3 to be integrated with the mobile device to achieve the function of displaying the projected image of the display device. It is a preferred embodiment of the present invention, which is only limited by the invention; those skilled in the art understand that, in this modification, even an equivalent change will fall into this paragraph. Brief Description], ^: is a schematic diagram of the structure of a virtual image display device. =3: A schematic diagram of the structure of a real image display device. =^ is a schematic structural view of the present invention - an embodiment. A schematic diagram of switching the embodiment shown in FIG. 3 into a virtual image projection mode. 200914976 Fig. 5 is a schematic diagram showing the switching of the embodiment shown in Fig. 3 into a real image projection mode. Fig. 3 is a perspective view showing the use of the virtual image and the real image projection mode of the embodiment shown in Fig. 3. [Description of main component symbols] Display device 1, 3, 4 Laser light source ίο, '40 Laser beam 11, 31, 41 Pre-optics 12, 32, 42 Light scanning members 13, 33, 43 f, scanning beam 14, 34, 44 1 post-optics 15, 35, 45, 45a, 45b face 16, 36, 46a, 46b human eye 2 beam splitter 47 mirror 471 reflected beam 48a penetration Beam 48b
1212