587176 A7 B7 五、發明説明（2 ) 為達成上述之目的，本發明一種折射投影器用之發光 裝置，主要包括：一光源；一反射式導光板，位於該光源 之一側，用以反射並均勻化來自該光源之光；一繞射鏡片 組，位於該反射式導光板反射出光之一側，用以對該反射 式導光板反射之光進行集光及降低光散射；一半穿透式鏡 片’位於該繞射鏡片組相對於該反射式導光板之一側，用 以反射由該繞射鏡片組所傳來之光線；以及一顯示單元， 位於該半穿透式鏡片反射出光之一侧，以接收由該半穿透 式叙片所傳來之光線並反射之；其中，該繞射鏡片組位於 該反射式導光板與該半穿透式鏡片之間，該顯示單元不位 於4繞射1¾片組與該反射式導光板形成之直線上；且該光 源發射出之光，係經由該反射式導光板反射至該繞射鏡片 組，並穿透該繞射鏡片組，之後經由該半穿透式鏡片反射 至該顯示單元，再經由該顯示單元反射並穿透該半穿透式 鏡片送出。 本發明之發光裝置可應用於任何影像、圖片、符號及 文字顯示之顯示裝置，如眼鏡型（Goggle type)或頭盔型 Mount)折射投影裝置、液晶電視、液晶電腦 器、手提電腦顯示器、攜帶型D V D、汽車、火車、飛機 載電视、G P S顯示、博彩遊戲機、便攜電视、兒童學習 機、掌上電腦、遊戲機、0 A工業儀器顯示、可视電話 等。由於本發明確有增進功效，故依法申請發明專利。 【四、實施方式】 氏張尺度適财國( CNS ) Μ規格（力㈣7公楚)--^-- (請先閲讀背面之注意事項再填寫本頁各欄) 裝 ----訂--------線！ 587176 A7 B7 五、發明説明（3 ) 本發明折射投影器用之發光裝置之光源發出之光種類 η限制了為任何之可見光，較佳為輪流發出紅、綠、藍 三原色光。其發出之光之週期為其發光週期小於人體眼睛 視覺暫留時間之三分之一。本發明折射投影器用之發光裝 置之半牙透式鏡片，其光穿透率較佳為介於 40〜90%。本 發明折射投影器用之發光裝置之半穿透式鏡片種類無限 制，較佳為偏振分光膜（PBS)。本發明折射投影器用之發 光裝置之顯示單元可為習用之顯示器，較佳為微平面顯示 态，更佳為LCD、LTPS LCD，L_COS微顯示器或DMD 微顯7F器。本發明折射投影器用之發光裝置之繞射鏡片組 係用以提高自該反射式導光板發出之光線之半輝度角。本 發明之發光裝置可應用於任何影像、圖片、符號及文字顯 不<顯示裝置，較佳為眼鏡型（G〇ggle type)或頭盔型 (Head Mount)折射投影裝置。 為能讓貴審查委員能更瞭解本發明之技術内容，特 舉二較佳具體實施例説明如下。 實施例1 请同時參照第1、2圖本發明發光裝置之剖視圖與立體 圖。本發明之發光裝置1包含一外殼5，内含可輪流發出. 紅、綠、藍三原色光之光源10，且其發光週期小於人體眼 睛視覺暫留時間之三分之一，以於眼睛視覺暫留期間將形 成影像之各原色光完全送達眼睛，使眼睛看到完整的影 像。反射式導光板20位於光源10之一侧，用以將來自光 源1 0之光反射至繞射鏡片組3 0，並使光均勻化。繞射鏡 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公爱） 7 ---------^-------- ^ I (請先閱讀背面之注意事項再填寫本頁各欄) 587176 A7 _______B7____ 五、發明説明（4 ) 片組3 0位於反射式導光板2 〇之下側，包含水平繞射鏡片 3 1與垂直繞射鏡片32，用以對反射式導光板2〇反射之光 進行集光’即提南光線之半輝度角，使散射之光線可調整 成為平行光，同時降低光散射。偏振分光膜（PBS)40，位 於繞射鏡片組3 0之下側，其光反射率為5 〇 %，光穿透率為 9 0%，用以反射由繞射鏡片組30傳來之光線，並使L_ C Ο S微顯示器5 0反射之光得以穿透之，以節省發光裝置 之空間。L-COS微顯示器50位於偏振分光膜40反射出光 之一側，以接收由偏振分光膜4 〇所傳來之光線，並將其反 射後再穿透過偏振分光膜4 0，以將L - C Ο S微顯示器5 0顯 示之影像送至後續之折射投影器。 光源1 0發射出之光’係經由反射式導光板2 〇反射至 繞射鏡片組3 0，並穿透繞射鏡片組3 〇，之後經由偏振分 光膜40反射至L-COS微顯示器50，再經由L-COS微顯示 器50反射並帶出L-COS微顯示器50上顯示之影像，然後 穿透偏振分光膜40而送出本發明之發光裝置1，以將l-C Ο S微顯示器5 0上顯示之影像傳送至後續之折射投影 器，進行放大投影。本發明之發光裝置能有效提供顯示器 高均勻度、省電、及佔用空間小之光源，可選擇性地與任 一影像顯示裝置相結合，尤其適合作為眼鏡型或頭盔型顯 示裝置之光源。 f施例2 __8 度顧+ 關家鮮（CNS) A4規格（21GX297^i^ " ' 、^---------訂--------^1 (請先閲讀背面之注意事項再塡寫本頁各欄) 587176 A7 _ B7_ 五、發明説明（5 ) ~ ' 請參照第3圖。第3圖係本發明眼鏡型折射投影裝置 内部之剖面圖。本實施例包含一 T字型殼體，内含如第j 圖所示之發光裝置1與2，二個三菱鏡240與241(反射單 元），二非等曲率凸透鏡250與25 1(折射透鏡組），以及二 經部分鏡面處理之凹面鏡2 6 0與2 6 1 (虛像成像單元）。其 中’該一發光裝置1與2係置於該T字型殼體之中心位置， 該二發光裝置1與2之另一側則分別置有三稜鏡2 4 〇與三棱 鏡241，使得該二發光裝置1與2皆未於該二三稜鏡24〇與 241之間。三稜鏡240與241下方分別置有凸透鏡25〇與 251，該凸透鏡25 0與251下方分別為凹面鏡26〇與261。 其中該凸透鏡25 0與25 1並安排成使由三棱鏡24〇、241 來之入射光與該凸透鏡250與251與該反射單元入射面法 線形成一 3 0度之夾角Y。 由發光裝置1與2發出之光線，分別向左右兩方進入 至三棱鏡240與241處。之後再反射至凸透鏡25〇與251 處，將原影像轉換形成一倒立放大實像，之後再經過該 凹面鏡2 6 0與2 6 1，再一次放大，形成一倒立放大虛像。 請參照第4圖，第4圖係本發明眼鏡型折射投影裝置 内部之側視圖。此圖顯示該三稜鏡2 4 0會將L-COS微顯示器 50所提供之影像偏折折射至凸透鏡25〇處，是為影像 2 7 1 ’且該影像2 7 1會落在該凸透鏡2 5 0之焦距與兩倍焦 距之間某處’並依據凸鏡成像原理，在該凸透鏡2 5 〇之另 一側的兩倍焦距外會形成一上下倒立，左右方向不變之 放大貫像2 7 2 (右有屏幕置於此則可看到一倒立放大實 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公楚） 9 II I ^ ^-------- ^! (請先閱讀背面之注意事項再填寫本頁各攔} 587176 A7 ' Γ_______Β7__ • 五、發明説明（6 ) 像），該實像272之放大倍率取決於影像271與凸透鏡250 之距離，距離愈近則放大倍率愈高。而該實像2 72須落於 该凹面鏡2 6 0之焦距内，同樣的，依據成像原理，在凹面 鏡260之另一側會形成一放大虛像273，且該虛像273之 放大倍率亦取決於該實像272與該凹面鏡26〇之間的距 離。値得注意的是，在本實施例中凸透鏡2 5 〇與凹面鏡 2 6 0之間沒有屏幕，無法看到由凸透鏡2 5 〇形成之放大實 像，因此’我們看到的現象是光線經由凸透鏡2 5 〇匯聚偏 折至凹面鏡260，之後於凹面鏡26〇偏折投射至觀測者眼 中’但該光線無法於眼球上聚焦成實像，所以眼睛會延 伸该光線至凹面鏡2 6 〇鏡後，形成一與實像2 7 2方向相同 之放大虛像2 7 3。 #習此技術領域者可認知到，為了達成上述的成像 設計’該三稜鏡240、凸透鏡250與凹面鏡260三者須成 一特足之相對位置，使得影像2 7丨可落於該凸透鏡2 5 〇之 焦距與兩倍焦距之間，且實像2 7 2可落於該凹面鏡2 6 0之 焦距内。 實施例\ 本貫施例構造大致如同實施例2所述，惟不同之處在 於琢虛像成像單元由凹面鏡2 6 〇置換為平面鏡。如此，所 形成 < 影像只經過凸透鏡2 5 〇 一次折射與放大作用，之後 再、二由平面叙轉換成虛像，平面鏡不具有放大作用。但本 本紙張尺度適用A4規格（ίγ〇_Χ29μ 、裝---------訂--------線| (請先閱讀背面之注意事項再填寫本頁各欄) 587176 A7 B7_五、發明説明（7 ) ~^ - 貝她例構造影像放大之倍率及作用，仍可由折射光線之凸 透鏡250所完成。 ' 實施例4 本實施例構造大致如同實施例2所述，惟不同之處在 於該虛像成像單元由凹面鏡26〇置換為具4〇%反射率之凹 透鏡；其成像原理與放大倍率皆如同實施例2所述。但置 換成凹透鏡 < 後，觀測者在觀測影像時可同時看見外界環 境。而因為本發明之裝置係以折射投影形成虛像，當採用 凹透鏡作為虛像成像單元，該透射該凹透鏡之光線，因為 折射偏折角度較大，所以對於站在使用者前，且視線約略 等咼於眼鏡型顯示器之人，不會看到使用者正在使用或接 收足影像及資料，其保密及隱私性佳，且不會干擾周遭其 他人。 實施例5 本貫施例構造大致如同實施例2所述，惟不同之處在 於讜虛像成像單元係由一面鏡與凹透鏡組合而成；其成像 原理與放大倍率皆如同實施例2所述。該面鏡可上下抽 換，因此可依觀測者需要決定是否只觀測影像，或是想同 時看見外界環境。實施例6 (請先閲讀背面之注意事項再填寫本頁各欄) 裝 -----訂---- 線丨 本紙張尺度適用中國國家標準（CNS) A4規格7^1^297公爱） 11 五、發明説明（8 ) 、本貫施例構造大致如同實施例2所述，惟不同之處在 於?系虛像成像單it係由-遮罩與凹透鏡組合而成，·並成像 原理與放大倍率皆如同實施例2所述。該遮罩可上'下抽 換，因此可依制者需要決定是否只觀測影像，或是相同 時看見外界環境。 〜 實施例7 本實施例構造大致如同實施例4所述，惟不同之處在 於該虛像成像單元外部加裝一半固態液晶層遮軍35〇以及 一偏光鏡片3 60 ;其成像原理與放大倍率皆如同實施例2 所述。惟該半固態液晶層遮罩於通電時變為透明，使外界 之光線通過，使用者可以於接收顯示器影像之同時接受影 像及監看周遭環境。當使用者關閉液晶層遮罩之電源，遮 罩復遮除外界之光線，而為不受外界干擾進行資訊或影像 之接收，所以可以通電與否決定其為透光或不透光狀態， 作為一光栅使用。因此可依觀測者需要決定是否只觀測影 像，或是想同時看見外界環境。 實施例8 請參見第5圖。本實施例構造大致如同實施例2所述， 准不同之處在於该發光裝置1、2與三棱鏡240、241之間 分別置有一視焦距壓縮組2 8 0 ;其成像原理與放大倍率皆 如同實施例2所述。視焦距壓縮組2 8 0可產生景深加大之 效果，使影像更為清晰。 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） 12 (請先閲讀背面之注意事項再塡寫本頁各棚) 訂--------線— 587176 A7 __ B7 - -- __ 五、發明説明（9 ) 實施例9 請參見第6、7圖。本實施例構造大致如同實施例2所 述，惟不同之處在於僅使用一發光裝置1，並利用凸透鏡 220與22 1及三稜鏡230與23 1來將光線折射或反射至三棱 鏡2 4 0與2 4 1處；其成像原理與放大倍率皆如同實施例2所 述。 實施例1 0 請參見第8圖。本實施例構造大致如同實施例8所述， 惟不同之處在於僅使用一發光裝置1，並利用凸透鏡2 2 〇 與221及二棱鏡230與231來將光線折射或反射至三棱鏡 240與241處；其成像原理與放大倍率皆如同實施例2所 述。 需注意的是，上述僅為實施例，而非限制於實施例。 譬如此不脱離本發明基本架構者’皆應為本專利所主張 之權利範圍，而應以專利申請範圍為準。 【五、圖式簡單説明】 第1圖係本發明發光裝置之剖視圖。 第2圖係本發明發光裝置之立體圖。 第3圖係本發明之一實施例眼鏡型折射投影裝置内部之立 體圖。 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公楚） 13 、裝i (請先閲讀背面之注意事項再填寫本頁各欄) ------訂---- 線！ 587176 A7 --_____ Β7 五、發明説明（1〇Υ~" /rAr 4 n 吊田係本發明之一實施例眼鏡型折射投影裝置内部之側 視圖與虛像成像原理。 第5圖係本發明之另一實施例眼鏡型折射投影裝置内部之 立體圖。 第6圖係本發明之又一實施例眼鏡型折射投影裝置内部之 立體圖。 第7圖係第6圖本發明之又一實施例眼鏡型折射投影裝置内 部之上視圖。 第8圖係本發明之再一實施例眼鏡型折射投影裝置内部之 立體圖。 【六、圖號説明】 1，2 發光裝置 5 外殼 10 光源 20 反射式導光板30 繞射鏡片組 31 水平繞射鏡片 32 垂直繞射鏡片 40 偏振分光膜(PBS) 50 L-COS微顯示器 220 凸透鏡 221 凸透鏡 230 三棱鏡 231 三棱鏡 240 三棱鏡 241 三稜鏡 250 凸透鏡 25 1 凸透鏡 260 凹面鏡 261 凹面鏡 271 影像 2 7 2實像 273 虛像 280 視焦距壓縮組 350 半固態液晶遮罩 360 偏光鏡片 14 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） I ^---------^-------- ^ I (請先閲讀背面之注意事項再填寫本頁各欄)587176 A7 B7 V. Description of the invention (2) In order to achieve the above-mentioned object, a light-emitting device for a refractive projector of the present invention mainly includes: a light source; a reflective light guide plate located on one side of the light source for reflection and uniformity Light from the light source; a diffractive lens group, located on one side of the light reflected from the reflective light guide plate, to collect light and reduce light scattering from the light reflected from the reflective light guide plate; Located on one side of the diffractive lens group opposite to the reflective light guide plate for reflecting light transmitted by the diffractive lens group; and a display unit on one side of light reflected by the transflective lens, To receive and reflect the light transmitted by the transflective film; wherein the diffractive lens group is located between the reflective light guide plate and the transflective lens, and the display unit is not located at 4 diffractions 1¾ sheet group and the reflective light guide plate are formed on a straight line; and the light emitted by the light source is reflected by the reflective light guide plate to the diffractive lens group, penetrates the diffractive lens group, and then passes through the half wear Reflective lenses to the display unit, the display unit and then through the transflective reflector and lens to penetrate out. The light-emitting device of the present invention can be applied to any image, picture, symbol and text display display device, such as a Goggle type or a helmet mount refractive projection device, a liquid crystal television, a liquid crystal computer, a portable computer display, a portable type DVD, car, train, aircraft TV, GPS display, gaming console, portable TV, children's learning machine, handheld computer, game console, 0 A industrial instrument display, video phone, etc. Since the present invention does have an enhanced effect, an invention patent is applied in accordance with the law. [Fourth, the implementation method] The scale standard of the wealthy country (CNS) Μ specifications (force 7 Gongchu)-^-(Please read the precautions on the back before filling in the columns on this page) -------line! 587176 A7 B7 V. Description of the invention (3) The type of light emitted by the light source of the light-emitting device of the refracting projector of the present invention η is limited to any visible light, and it is preferable to emit red, green, and blue primary colors in turn. The period of light emitted by the light is less than one third of the visual retention time of the human eye. The semi-transparent lens of the light-emitting device of the refractive projector of the present invention preferably has a light transmittance of 40 to 90%. The type of the semi-transmissive lens of the light-emitting device used in the refractive projector of the present invention is unlimited, and it is preferably a polarization beam splitting film (PBS). The display unit of the light emitting device used in the refractive projector of the present invention may be a conventional display, preferably a micro-plane display state, more preferably an LCD, an LTPS LCD, an L_COS micro-display or a DMD micro-display 7F device. The diffractive lens group of the light-emitting device for the refractive projector of the present invention is used to increase the half-brightness angle of the light emitted from the reflective light guide plate. The light-emitting device of the present invention can be applied to any image, picture, symbol, and text display < display device, and is preferably a glasses type or head mount refractive projection device. In order to make your reviewing committee better understand the technical content of the present invention, the second preferred embodiment is described below. Embodiment 1 Please refer to the sectional view and perspective view of the light-emitting device of the present invention at the same time as Figs. The light-emitting device 1 of the present invention includes a casing 5 containing light sources 10 which can emit light of three primary colors: red, green, and blue. The light-emitting period is less than one-third of the human eye vision retention time. During the stay, the primary color light that forms the image is completely delivered to the eyes, so that the eyes see the complete image. The reflective light guide plate 20 is located on one side of the light source 10, and is used to reflect the light from the light source 10 to the diffractive lens group 30 and to make the light uniform. Diffraction mirror This paper is in accordance with China National Standard (CNS) A4 specification (210X297 public love) 7 --------- ^ -------- ^ I (Please read the precautions on the back before (Fill in the columns on this page) 587176 A7 _______B7____ V. Description of the invention (4) The sheet group 30 is located below the reflective light guide plate 20, and includes a horizontal diffractive lens 31 and a vertical diffractive lens 32 for the reflection type. The light reflected by the light guide plate 20 collects light, that is, the half-brightness angle of the southern light, so that the scattered light can be adjusted into parallel light, while reducing light scattering. Polarizing beam splitting film (PBS) 40, located under the diffractive lens group 30, has a light reflectance of 50% and a light transmittance of 90%, and is used to reflect the light transmitted by the diffractive lens group 30. In addition, the light reflected by the L_C0S microdisplay 50 can be penetrated to save the space of the light-emitting device. The L-COS micro-display 50 is located on one side of the light reflected by the polarizing beam splitting film 40 to receive the light transmitted by the polarizing beam splitting film 40 and reflect it and then pass through the polarizing beam splitting film 40 to convert L-C Ο S microdisplay 50 The image displayed on the 50 is sent to the subsequent refractive projector. The light emitted by the light source 10 is reflected by the reflective light guide plate 20 to the diffractive lens group 30, penetrates the diffractive lens group 30, and is then reflected to the L-COS microdisplay 50 through the polarization beam splitting film 40. The light is reflected by the L-COS micro-display 50 and taken out of the L-COS micro-display 50, and then transmitted through the polarization beam splitting film 40 and sent to the light-emitting device 1 of the present invention to display the 1 C 0 micro-display 50 The image is transmitted to the subsequent refractive projector for enlarged projection. The light-emitting device of the present invention can effectively provide a light source with high uniformity, power saving, and small space for display. It can be selectively combined with any image display device, and is particularly suitable as a light source for glasses-type or helmet-type display devices. f 例 2 __8 Degree Gu + Guan Jiaxian (CNS) A4 specifications (21GX297 ^ i ^ " ', ^ --------- Order -------- ^ 1 (Please read first (Notes on the back are written in the columns on this page) 587176 A7 _ B7_ V. Description of the invention (5) ~ 'Please refer to Figure 3. Figure 3 is a cross-sectional view of the interior of the glasses-type refractive projection device of the present invention. This embodiment Contains a T-shaped housing, which contains the light-emitting devices 1 and 2 as shown in figure j, two Mitsubishi mirrors 240 and 241 (reflection unit), two non-equal curvature convex lenses 250 and 25 1 (refractive lens group), And two concave mirrors 2 60 and 2 6 1 (virtual image imaging units) that are partially mirror-finished. Among them, the first light-emitting device 1 and 2 are placed at the center of the T-shaped housing, and the two light-emitting devices 1 and 2 On the other side, there are three ridges 24 0 and three prisms 241 respectively, so that the two light emitting devices 1 and 2 are not between the two three ridges 24 0 and 241. The three ridges 240 and 241 are respectively placed below Convex lenses 25o and 251, and concave lenses 260 and 261 are respectively below the convex lenses 250 and 251. The convex lenses 250 and 251 are arranged so that the incident light from the prisms 240 and 241 and the convex The lenses 250 and 251 form an angle Y of 30 degrees with the normal of the incident surface of the reflection unit. The light emitted by the light emitting devices 1 and 2 enters the prisms 240 and 241 to the left and right respectively, and then reflects to the convex lens 25 〇 and 251, the original image is converted into an inverted magnified real image, and then passed through the concave mirrors 2 60 and 2 61, and then magnified again to form an inverted magnified virtual image. Please refer to FIG. 4, which is the present invention A side view of the inside of a glasses-type refractive projection device. This figure shows that the three-dimensional 2 40 will refract the image provided by the L-COS microdisplay 50 to a convex lens 25 °, which is the image 2 7 1 ′ and the Image 2 71 will fall somewhere between the focal length of the convex lens 2 50 and twice the focal length 'and according to the principle of convex imaging, an upside down will be formed outside the double focal length of the other side of the convex lens 2 50 The left and right direction of the magnified image 2 7 2 (the screen on the right is placed here, you can see an inverted magnified actual paper size applicable to Chinese National Standard (CNS) A4 specifications (210X297)) 9 II I ^ ^- ------- ^! (Please read the notes on the back before filling Each page on this page} 587176 A7 'Γ _______ Β7__ • V. Description of the invention (6) image) The magnification of the real image 272 depends on the distance between the image 271 and the convex lens 250. The closer the distance, the higher the magnification. And the real image 2 72 It must fall within the focal length of the concave mirror 260. Similarly, according to the imaging principle, an enlarged virtual image 273 will be formed on the other side of the concave mirror 260, and the magnification of the virtual image 273 also depends on the real image 272 and the concave mirror 26. 〇The distance between them. It should be noted that in this embodiment, there is no screen between the convex lens 2 5 0 and the concave lens 2 60, and the magnified real image formed by the convex lens 2 5 0 cannot be seen, so 'the phenomenon we see is that the light passes through the convex lens 2 〇Converge to the concave mirror 260, and then project into the observer's eyes at the concave mirror 260. But the light cannot be focused on the eyeball into a real image, so the eye will extend the light to the concave mirror 260 and form an Real image 2 7 2 Magnified virtual image 2 7 3 in the same direction. #Habitants in this technical field can recognize that in order to achieve the above-mentioned imaging design, the three lenses 240, convex lenses 250 and concave mirrors 260 must be in a relative position so that the image 2 7 丨 can fall on the convex lens 2 5 The focal length of 〇 is between twice the focal length, and the real image 272 can fall within the focal length of the concave mirror 260. Example The structure of this example is roughly the same as that described in Example 2, except that the virtual imaging unit is replaced with a concave mirror 26 0 by a flat mirror. In this way, the resulting image is only refracted and magnified once by the convex lens 250, and then converted from a planar image to a virtual image. The flat mirror has no magnifying effect. But the size of this paper is applicable to A4 specification (ίγ〇_Χ29μ, installed --------- order -------- line | (Please read the precautions on the back before filling in the columns on this page) 587176 A7 B7_V. Description of the invention (7) ~ ^-The magnification and function of Bethel ’s structured image magnification can still be completed by the convex lens 250 that refracts light. 'Embodiment 4 The structure of this embodiment is substantially the same as that described in Embodiment 2, The only difference is that the virtual image imaging unit is replaced by a concave mirror 260 with a concave lens with 40% reflectance; its imaging principle and magnification are as described in Example 2. However, after the replacement with a concave lens < When the image is visible, the external environment can be seen at the same time. Because the device of the present invention forms a virtual image by refracting projection, when a concave lens is used as the virtual image imaging unit, the light transmitted through the concave lens has a large refractive deflection angle, so it is suitable for standing users. People who are still waiting for the glasses-type display will not see that the user is using or receiving foot images and data, which has good confidentiality and privacy, and will not interfere with other people around them. Example 5 The structure of the example is roughly the same as that described in Example 2. The difference is that the virtual image imaging unit is a combination of a mirror and a concave lens; the imaging principle and magnification are as described in Example 2. The mirror can be swapped up and down. Therefore, you can decide whether to observe only the image or to see the external environment at the same time according to the needs of the observer. Example 6 (Please read the precautions on the back before filling in the columns on this page) Line 丨 This paper size applies Chinese National Standard (CNS) A4 specifications 7 ^ 1 ^ 297 public love) 11 5. Description of the invention (8) The structure of this embodiment is roughly the same as that described in embodiment 2, but the difference is? The virtual imaging unit is composed of a mask and a concave lens. The imaging principle and magnification are the same as those described in the second embodiment. The mask can be swapped up and down, so the user can decide whether to observe only the image or see the external environment at the same time. ~ Example 7 The structure of this example is roughly the same as that described in Example 4, but the difference is that the virtual image imaging unit is equipped with a half solid-state liquid crystal layer covering 35 and a polarizing lens 3 60; its imaging principle and magnification are both As described in Example 2. However, the semi-solid liquid crystal layer mask becomes transparent when it is energized, allowing external light to pass through. The user can receive the image while monitoring the monitor and monitor the surrounding environment. When the user turns off the power of the mask of the liquid crystal layer, the mask covers the outside light, and receives information or images without external interference. Therefore, the user can determine whether it is transparent or opaque by turning on or off. A raster is used. Therefore, it is up to the observer to decide whether to observe only the image or to see the external environment at the same time. Example 8 Please refer to FIG. 5. The structure of this embodiment is substantially the same as that described in Embodiment 2. The difference is that the light-emitting devices 1, 2 and the prisms 240, 241 respectively have a focal length compression group 2 8 0; the imaging principle and magnification are the same as the implementation. Example 2. The focal length compression group 280 can increase the depth of field effect and make the image clearer. This paper size applies to Chinese National Standard (CNS) A4 specification (210X297 mm) 12 (Please read the notes on the back before writing the sheds on this page) Order -------- line — 587176 A7 __ B7- -__ 5. Description of the invention (9) Embodiment 9 Please refer to Figs. 6 and 7. The structure of this embodiment is substantially the same as that described in Embodiment 2. The only difference is that only one light-emitting device 1 is used, and the convex lenses 220 and 22 1 and the triplets 230 and 23 1 are used to refract or reflect light to the triangular prism 2 4 0 And 2 4 1 places; the imaging principle and magnification are the same as those described in the second embodiment. Embodiment 10 Please refer to FIG. 8. The structure of this embodiment is substantially the same as that described in Embodiment 8. The only difference is that only one light-emitting device 1 is used, and convex lenses 2 2 0 and 221 and two prisms 230 and 231 are used to refract or reflect light to the triangular prisms 240 and 241. ; Its imaging principle and magnification are as described in Example 2. It should be noted that the above are merely examples, and are not limited to the examples. For example, those who do not depart from the basic structure of the present invention should be the scope of rights claimed by the patent, and the scope of the patent application shall prevail. [V. Brief Description of the Drawings] FIG. 1 is a cross-sectional view of the light-emitting device of the present invention. Fig. 2 is a perspective view of a light emitting device of the present invention. Fig. 3 is a perspective view of the inside of a glasses-type refractive projection apparatus according to an embodiment of the present invention. This paper size applies to China National Standard (CNS) A4 specifications (210X297). 13. Install i (Please read the precautions on the back before filling in the columns on this page) ------ Order ---- Line! 587176 A7 --_____ Β7 V. Description of the invention (1〇Υ ~ " / rAr 4 n Hanging field is a side view and virtual image imaging principle inside the glasses-type refractive projection apparatus according to an embodiment of the present invention. Fig. 5 is the present invention Another perspective view of the inside of a glasses-type refractive projection apparatus according to another embodiment. FIG. 6 is a perspective view of the inside of a glasses-type refractive projection apparatus according to another embodiment of the present invention. FIG. 7 is a sixth view of the glasses-type refractive projection apparatus of the present invention. Top view of the inside of a refractive projection device. Figure 8 is a perspective view of the inside of a glasses-type refractive projection device according to yet another embodiment of the present invention. [六 、 Illustration of drawing numbers] 1,2 Light-emitting device 5 Housing 10 Light source 20 Reflective light guide plate 30 Diffraction Lens Group 31 Horizontal Diffraction Lens 32 Vertical Diffraction Lens 40 Polarizing Beamsplitter (PBS) 50 L-COS Micro Display 220 Convex Lens 221 Convex Lens 230 Three Prism 231 Three Prism 240 240 Prism 241 Three 稜鏡 250 Convex Lens 25 1 Convex Lens 260 Concave Mirror 261 Concave Mirror 271 Image 2 7 2 Real image 273 Virtual image 280 Focal length compression group 350 Semi-solid liquid crystal mask 360 Polarized lens 14 This paper size applies to China Standard (CNS) A4 size (210X297 mm) I ^ --------- ^ -------- ^ I (please read the Notes on the back page and then fill each column)