201237538 六、發明說明： 【發明所屬之技術領域】 本發明係有關於一種光學襞置，尤指一種能提高光能 量利用率之光學引擎以及投影襞置。 【先前技術】 按，對於需要使用大螢幕之場所，如會議室或學校， 或為提高個人娱樂使用之大螢幕影像，使得投影機廣泛應 用於開會、教育及娛樂等方面；而隨著產業技術之進步， 對於投影機的晝質、尺寸以及價格之要求也就越來越高。 而習知之投影機内部的光學引擎主要係由光源、偏極 分光片、光閥以及投影鏡頭所組成，以藉由該偏極分光片 將光源分光，並經由該光閥轉成影像光束，而穿透該偏極 分光片及投影鏡頭，以投射出影像。 惟’習知偏極分光片係為三維的偏振分光稜鏡 (PBS) ’不但體積較大、價格昂貴，且易造成光能量利 用率損失。因而有如第M343804號本國專利「光學引擎以 及投影裝置」，係採用二維平板的高分子膜極化分光器， 以縮小體積’且價格較便宜’並可降低光能量利用率的損 失。 請參閱第1圖，係為上述第M343804號本國專利之投 影裝置示意圖。如圖所示，習知投影裝置係包括：光源1〇、 高分子偏極分光片11、光閥12、及投影鏡頭13。 所述之光源10，係用以提供光束100，而該光束1〇〇 包括第一偏振方向S1之第一偏振光束l〇〇a以及第二偏振 4 111961 201237538 方向S2之第二偏振光束100b。 所述之高分子偏極分光片11 ’係設置於該光束100之 投射路控上，並反射該光束100之第一偏振光束i00a，而 该第一偏振光束1 〇〇b則穿透該高分子偏極分光片11。 所述之光閱12，係設置於被該向分子偏極分光片11 反射該第一偏振光束l〇〇a之投射路徑上，並將該些第一偏 振光束100a轉換為第二偏振方向S2之影像光束12〇，且 °亥衫像光束120穿透該向分子偏極分光片11。 所述之投影鏡頭13,係設置於穿透該高分子偏極分光 片11後之該影像光束120之投射路徑上。 惟，該習知之二維平板的高分子偏極分光片u雖能 縮小體積，並能降低價格，但該光束100之第一偏振光束 l〇〇a經由反射而投射至該光閥12，而該第二偏振光束 則穿透該高分子偏極分光片U，其中該第二偏振光束薦 並未提供任何作用，因而仍有光能量利用率的損失，故無 法因應兩畫質、大尺寸及低價格之使用需求。 因此，繁於上述之問題，如何提供一種光學引擎以及 投影裝置，能降低光能量利用率的損失，並可提供高晝質、 大尺寸及低價格之使用需求’實已成為目前亟欲、旦 題。 【發明内容】 為達上述及其他目的， 包括：光源產生器；分光器 源產生器係提供照明光束； 本發明揭露一種光學引擎，係 組件；以及光閥，其中，該光 該分光器组件係用以將照明光 111961 5 201237538 束轉換為同·一偏振方向之光束’並傳送該光束至該光閥以 得到影像光束。 於一具體實施態樣中，該分光器組件包括：第一子平 板分光器，係設置於該光源產生器提供之照明光束之投射 路徑上，並將該照明光束分為自該第一子平板分光器反射 之第一偏振光束及穿透該第一子平板分光器之第二偏振光 束，第二子平板分光器’係設置於該第一偏振光束之投射 路徑上，並反射該第一偏振光束；第一偏轉器，係設置於 S玄第二偏振光束之投射路控上’使該第二偏振光束穿透並 轉換成第一偏振光束，以及主平板分光器，係設置於該第 一子平板分光器反射之第一偏振光束及該第一偏轉器轉換 之第一偏振光束的投射路徑上，並反射該二第一偏振光束。 在此一態樣之光學引擎中，該光閥係設置於被該主平 板为光反射s亥第一偏振光束之投射路控上，並將該歧第 一偏振光束轉換為影像光束，且該影像光束穿透該主平板 分光器。 於另一具體實施態樣中，該分光器組件包括：第一子 平板分光器’係設置於該照明光束之投射路徑上，並將該 照明光束分為自該第一子平板分光器反射之第一偏振光束 及穿透該第一子平板分光器之第二偏振光束；第二子平板 分光器，係設置於該第一偏振光束之投射路徑上，並反射 該第一偏振光束；第二偏轉器，係設置於該第二子平板分 光器反射之第一偏振光束的投射路徑上，以供該第一偏振 光束穿透並轉換成第二偏振光束；以及主平板分光器，係 6 111961 201237538 設置於穿透該第— 偏轉器轉換之第二 一偏振光束。 子平板分光器之第二偏振光束及該第二 偏振光束的投射路徑上，並反射該二第 在此-態樣之光學引擎中，該光_設置於被該主平 板分光n反射之該m振衫之投射路徑上，並將該 =第二偏振光束轉換為影像光束，且該影像光束穿透該主 平板分光器。 於又一具體實施態樣中，該分光器組件包括 卓妃八, 一口、也丨丁匕彷.罘一千 反…，係設置於該光源產生器提供之照明光束之投 射=上’並將該照明光束分為自該第—子平板分光器反 It Γ振光束及穿透該第—子平板分光器之第二偏振 u平板分光器，係設置於該第一偏振光束之投 於仅’並反射遠第—偏振光束；第二偏轉器，係設置 :X第—子平板分光器反射之第一偏振光束的投射路徑 ’以供該第—偏振光束穿透並轉換成第：偏振光束；主 光=刀光β，係設置於自該第—子分光器穿透之第二偏振 束及該第二偏轉器轉換之第二偏振光束的投射路徑上， 2該些第二偏振光束？透；第三偏㈣，係設置於穿透 Ζ平板分光器之第二偏振光束的投射路徑上，以供該些 t偏振光束穿透並轉換成第三光束；以及反射器，係; 此笛穿透'^第二偏轉11之第三光束的投射路徑上，以將該 ^三光束反射回至該第三偏抑，令該第三以穿透該 二偏轉β並轉換成第—偏振光束，且使該第一偏振光束 該主平板分光11，以令該主平板分W反射該第- Π1961 7 201237538 偏振光束。 在此-態樣之光學引擎中，該光閥係設置於被該主平 反刀光器反射該第—偏振光束之投射路徑上，並將該些第 偏振光束轉換為影像光束，且該影像光束 分光器。 丁杈 再:具體實施態樣中，該分光器組件包括：第一子 平板分光n，係設置於郎料权投料徑上，並將該 自該第一子平板分光器反射之第-偏振光束 子平板分光器之第二偏振光束；第二子平板 分光器’係設置於該第1振光权投射路徑上，並反射 該1-偏振光束；第—偏轉器，錢置於該第二偏振光束 之投射路t上’使4第：偏振光束穿透並轉換成第一偏振 光束’主平板h光||，係設置於該帛二子分絲反射之第 :偏振光束及該第—偏轉器轉換之第—偏振光束的投射路 钇上以仏°亥些第一偏振光束穿透；第三偏轉器，係設置 於穿透該主平板分光II之第—偏振光束的投射路徑上，以 供該些第-偏振光束穿透並轉換成第三光束；反射器，係 。又置於穿透4第二偏轉||之第三光束的投射路徑上，以將 該些第三光束反射回至該第三偏轉器，令該第三光束穿透 該第三偏㈣並轉換成第二驗光束，且使該第二偏振光 束投射至社平板分光II，以令社平板分光器反射該第 二偏振光束。 在此一態樣之光學引擎中，該光閥係設置於被該主平 板分光器反射該第二偏振光束之投射路徑上，並將該些第 8 111961 201237538 一偏振光束轉換為影像光束， 且5亥衫像先束穿透該主平板 勿无器。 本發明復提供一種投影罗番 仅〜裝置，係包括：本發明之光學 以及W鏡頭’係設置於穿透該絲 分光器後之該影像光束之投射路徑上。又依上述之光學引 擎及投影裝置，該主平板分朵 或石英玻璃光柵極化分光器係為心子膜極化分光器 =於該光源產生器提供之照明光束為偏極 以，自該第一子平板分杏哭八也 ^ σο刀離之該第—偏振光束具有第 之第-、㈣^該第二偏振光束具有第二偏振方向；所述 之第偏振方向係為ρ偏振 - _ 偏振而该第二偏振方向係為s偏 :可=食偏振方向可為S偏振，而該第二偏振方 向"T為P偏振。此外，該第-伯201237538 VI. Description of the Invention: [Technical Field] The present invention relates to an optical device, and more particularly to an optical engine and a projection device capable of improving the utilization of light energy. [Prior Art] Press, for venues that require large screens, such as conference rooms or schools, or to enhance the use of large screen images for personal entertainment, making projectors widely used in meetings, education, and entertainment; Progress, the requirements for the quality, size and price of the projector are getting higher and higher. The optical engine inside the conventional projector is mainly composed of a light source, a polarizing beam splitter, a light valve and a projection lens, so that the light source is split by the polarizing beam splitter and converted into an image beam through the light valve. The polarizing beam splitter and the projection lens are penetrated to project an image. However, the conventional polarized beam splitter is a three-dimensional polarized beam splitter (PBS), which is not only bulky, expensive, but also susceptible to loss of light energy utilization. Therefore, there is a national patent "Optical Engine and Projection Device" of No. M343804, which uses a two-dimensional flat polymer film polarizing beam splitter to reduce the volume and is relatively inexpensive, and can reduce the loss of light energy utilization. Referring to Fig. 1, there is shown a schematic diagram of a projection apparatus of the above-mentioned National Patent No. M343804. As shown, the conventional projection apparatus includes a light source 1 , a polymer polarizing beam splitter 11 , a light valve 12 , and a projection lens 13 . The light source 10 is configured to provide a light beam 100, and the light beam 1 包括 includes a first polarized light beam 10a in a first polarization direction S1 and a second polarized light beam 100b in a second polarization 4111961 201237538 direction S2. The polymer polarized beam splitter 11' is disposed on the projection path of the light beam 100, and reflects the first polarized light beam i00a of the light beam 100, and the first polarized light beam 1 〇〇b penetrates the high Molecular polarized beam splitter 11. The light reading 12 is disposed on a projection path of the first polarized light beam 10a reflected by the molecular polarizing beam splitter 11 and converts the first polarized light beams 100a into a second polarization direction S2. The image beam is 12 〇, and the illuminating image beam 120 penetrates the molecular polarization beam splitting sheet 11. The projection lens 13 is disposed on a projection path of the image beam 120 after penetrating the polymer polarizing beam splitter 11. However, although the conventional two-dimensional flat polymer polarizing beam splitter u can reduce the volume and reduce the price, the first polarized light beam 10a of the light beam 100 is projected to the light valve 12 via reflection, and The second polarized light beam penetrates the polymer polarized beam splitter U, wherein the second polarized beam does not provide any effect, and thus there is still a loss of light energy utilization efficiency, so the two image quality and large size cannot be matched. Low price usage requirements. Therefore, in the above-mentioned problems, how to provide an optical engine and a projection device can reduce the loss of light energy utilization rate, and can provide high-quality, large-size and low-price use requirements, which has become a current desire. question. SUMMARY OF THE INVENTION To achieve the above and other objects, the present invention includes: a light source generator; a beam splitter source generator providing an illumination beam; an optical engine, a component assembly; and a light valve, wherein the light splitter component is The beam is used to convert the illumination light 111961 5 201237538 into a beam of the same polarization direction and transmit the beam to the light valve to obtain an image beam. In a specific implementation, the beam splitter assembly includes: a first sub-plate beam splitter disposed on a projection path of the illumination beam provided by the light source generator, and dividing the illumination beam into the first sub-plate a first polarized beam reflected by the beam splitter and a second polarized beam penetrating the first sub-plate beam splitter, the second sub-plate beam splitter being disposed on the projection path of the first polarized beam and reflecting the first polarization a first deflector disposed on a projection path of the S-second polarized beam, wherein the second polarized beam is penetrated and converted into a first polarized beam, and the main plate splitter is disposed at the first The first polarized beam reflected by the sub-plate beam splitter and the first polarized beam converted by the first deflector are projected on the projection path, and the two first polarized beams are reflected. In the optical engine of the aspect, the light valve is disposed on a projection path of the first polarized beam reflected by the main plate, and converts the first polarized beam into an image beam, and the optical beam is converted into an image beam. The image beam penetrates the main plate splitter. In another embodiment, the beam splitter assembly includes: a first sub-plate beam splitter' disposed on a projection path of the illumination beam, and dividing the illumination beam into the reflection from the first sub-plate beam splitter a first polarized light beam and a second polarized light beam penetrating the first sub-plate beam splitter; a second sub-plate beam splitter disposed on the projection path of the first polarized light beam and reflecting the first polarized light beam; a deflector disposed on a projection path of the first polarized beam reflected by the second sub-plate beam splitter for the first polarized beam to penetrate and be converted into a second polarized beam; and a main plate splitter, 6 111961 201237538 is disposed on the second polarized beam that is transmitted through the first-deflector. a second polarized light beam of the sub-plate beam splitter and a projection path of the second polarized light beam, and reflecting the optical signal in the optical state of the second plate splitter, the light light being disposed at the m reflected by the main plate splitting light n The projection path of the vibrating shirt converts the = second polarized beam into an image beam, and the image beam penetrates the main plate beam splitter. In another embodiment, the beam splitter assembly includes Zhuo Jiu, a mouth, and a 丨 千 罘 罘 罘 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The illumination beam is divided into an anti-It oscillating beam from the first sub-plate beam splitter and a second polarization u-plate beam splitter penetrating the first sub-plate beam splitter, and is disposed on the first polarized beam to be implanted only in the ' And reflecting the far-polarized beam; the second deflector is configured to: the projection path of the first polarized beam reflected by the X-th sub-plate beam splitter for the first-polarized beam to penetrate and convert into the first: polarized beam; The main light=knife light β is disposed on a projection path of the second polarized beam that is transmitted from the first sub-splitter and the second polarized light converted by the second deflector, and the second polarized light beams. The third offset (four) is disposed on a projection path of the second polarized beam that penetrates the Ζ flat beam splitter for the t-polarized light beam to penetrate and convert into a third light beam; and the reflector, the flute; Passing through the projection path of the third beam of the second deflection 11 to reflect the three beams back to the third deflection, and causing the third to penetrate the two deflections β and convert into the first polarization beam And the first polarized light beam splits the main flat plate 11 so that the main flat plate is divided into W to reflect the first Π1961 7 201237538 polarized light beam. In the optical engine of the aspect, the light valve is disposed on a projection path of the first polarized beam reflected by the main flat knife, and converts the polarized beams into an image beam, and the image beam Splitter. Ding Wei: In a specific implementation, the beam splitter assembly includes: a first sub-plate beam splitting n, which is disposed on a Lang material weight feed path and reflects the first-polarized light beam reflected from the first sub-plate beam splitter a second polarized beam of the sub-plate beam splitter; the second sub-plate beam splitter is disposed on the first right-right beam projecting path and reflects the 1-polarized beam; the first deflector, the money is placed in the second polarization The projection path t of the beam is such that the 4th: polarized beam penetrates and is converted into the first polarized beam 'the main plate h-light||, which is disposed on the second reflection of the second sub-filament: the polarized beam and the first deflector The first-polarized beam of the converted first-polarized beam is penetrated by the first polarized beam; the third deflector is disposed on the projection path of the first-polarized beam that penetrates the main plate beam splitting II for The first-polarized beams are penetrated and converted into a third beam; a reflector, a system. And placed on the projection path of the third beam that penetrates the second deflection || to reflect the third beam back to the third deflector, so that the third beam penetrates the third offset (four) and converts And forming a second illuminating beam, and projecting the second polarized beam to the slab beam splitting II to cause the social slab beam splitter to reflect the second polarized beam. In the optical engine of the aspect, the light valve is disposed on a projection path of the second polarized beam reflected by the main plate splitter, and converts the 8111961 201237538 polarized light beam into an image beam, and 5 Helmets like the first beam to penetrate the main plate without a device. The present invention provides a projection Rofan-only device comprising: the optical and W-lens of the present invention disposed on a projection path of the image beam after passing through the wire splitter. According to the above optical engine and projection device, the main plate splitting or quartz glass grating polarizing beam splitter is a core film polarizing beam splitter=the illumination beam provided by the light source generator is biased, from the first The sub-plate is divided into apricots and crying. The σο knife is separated from the first--the polarized beam has a first -, (four) ^ the second polarized beam has a second polarization direction; the first polarization direction is ρ-polarization - _ polarization The second polarization direction is s-bias: the color polarization direction may be S polarization, and the second polarization direction "T is P polarization. In addition, the first -
Qno °亥第一偏振光束與第一偏振光束之 =二差9。’而該第三光束與第一偏振光束之間的相 源產二本發明之光學?丨擎及投影農置，係於該光 所^之照明光束的投射路徑上設置第一子平板 刀先态，以將§亥光束分成相位 -it it 4r ^ 差90之苐一偏振光束及第 nr/:子平板分光器則反射該第-偏振光 第二偏振光束之投射路徑相同， 搭配第-職m偏彳权投射路徑上 光闕以轉換為影像二相 5亥主平板分光器可供該相 111961 9 201237538 同偏振方向之光束穿透，並於該光束穿透之路徑上設置第 三偏轉器及反射器，於該光束經第三偏轉器及反射器處理 後，再由主平板分光器反射至光閥以轉換為影像光束。本 發明之光學引擎及投影裝置可使光源產生器所發出之照明 光束皆轉換為影像光束，並通過投影鏡頭，故有效地提高 光能量利用率，且使用高分子膜極化分光器或石英玻璃光 柵極化分光器亦具有體積較小、成本低之優點。 【實施方式】 以下藉由特定的具體實施例說明本發明之實施方 式，熟悉此技藝之人士可由本說明書所揭示之内容輕易地 瞭解本發明之其他優點及功效。 須知，本說明書所附圖式所繪示之結構、比例、大小 等，均僅用以配合說明書所揭示之内容，以供熟悉此技藝 之人士之暸解與閱讀，並非用以限定本發明可實施之限定 條件，故不具技術上之實質意義，任何結構之修飾、比例 關係之改變或大小之調整，在不影響本發明所能產生之功 效及所能達成之目的下，均應仍落在本發明所揭示之技術 内容得能涵蓋之範圍内。同時，本說明書中所引用之如 “一”及“上”等之用語，亦僅為便於敘述之明瞭，而非用以 限定本發明可實施之範圍，其相對關係之改變或調整，在 無實質變更技術内容下，當亦視為本發明可實施之範疇。 第一實施例 請參閱第2圖，係為本發明所揭露之本發明之光學引 擎及投影裝置的第一實施例示意圖。如圖所示，本發明之 10 111961 201237538 光學引擎2，係包括：光源產生器2〇、第一子平板分光器 21、第二子平板分光器22、第一偏轉器23a、主平板分光 器24、及光閥25。 所述之光源產生器20，係提供照明光束2〇〇，該光源 產生器20所發出之照明光束2〇〇係為偏極化光源。 所述之第一子平板分光器21，係設置於該照明光束 200之投射路徑上，並將該照明光束2〇〇分為自該第一子 平板分光器21反射之第一偏振光束2〇〇a及穿透該第一子 平板为光器21之苐一偏振光束200b。所述之第一偏振光 束200a具有第一偏振方向S1，該第二偏振光束2〇〇b具有 第二偏振方向S2 ;其中，該第一偏振方向S1係可為？偏 振，而該第二偏振方向S2係為S偏振；或該第一偏振方 向S1係可為S偏振’而該第二偏振方向S2係為p偏振， 故第一偏振光束200a及第二偏振光束200b之相位差為9〇。。 所述之第二子平板分光器22,係設置於該第一偏振光 束200a之投射路徑上，並反射該第一偏振光束2〇〇&。 所述之第一偏轉益23a，係為半波長（；\_ /2)板，且設置 於該第二偏振光束200b之投射路徑上’使該第二偏振光束 200b穿透第一偏轉器23a並轉換成第一偏振光束2〇〇3。在 此及後文提及之「轉換成或經轉換之第一偏振光束2〇〇a」 係指與第二子平板分光器22反射之該第〜偏振光束2〇〇a 具有相同相位。 所述之主平板分光器24,係可與該第〜子平板分光器 21和第二子平板分光器22 —樣為高分子犋極化分光器或 111961 11 201237538 石英玻璃光栅極化分光器。該主平板分光器24係設置於該 第二子平板分光器22反射之第一偏振光束2〇〇&及該第一 偏轉器23a轉換之第一偏振光束2〇〇a的投射路徑上，並反 射該二第一偏振光束2〇〇a。 所述之光閥25，係設置於被該主平板分光器24反射 之該些第一偏振光束200a之投射路徑上，並將該些第一偏 振光束200a轉換為影像光束250，且該影像光束250穿透 該主平板分光器24。 依上所述之光學引擎2，本發明復提供一種投影裝 置’係包括：光學引擎2及投影鏡頭26。 所述之投影鏡頭26,係設置於穿透該主平板分光器 24後之該影像光束250之投射路徑上。 第二貫施例 請參閱第3圖，係為本發明所揭露之本發明之光學引 擎及投影裝置的第二實施例示意圖。 本實把例與第一實施例大致相同，其差異主要在於本 實施例將用以轉換光束偏振方向之偏轉器，如圖所示之半 波長（Λ/2)板之第二偏轉器23b設置於該第二子平板分光 器22反射之第一偏振光束2〇〇a的投射路徑上，以供該第 一偏振光束200a穿透並轉換成第二偏振光束2〇%，而穿 透該第一子平板分光器21之第二偏振光束2〇沘的投射路 徑上則未設有第-偏轉器23a。同時，本實施例中所採用 之主平板分光盗24係用以反射該二第二偏振光束2〇〇b， 而光閥25係將該些第二偏振光束2〇〇b轉換為影像光束 111961 12 201237538 250’且該影像光束250 f透該主平板分光器μ。在此及 後文提及之「職成或轉換之帛二餘光束鳩」係指 與穿透該第-子平板分光器21之第二偏振光束·具有 相同相位。 第三實施例 請參閱第4圖，係為本發明所揭露之本發明之光學引 擎及投影裝置的第三實施例示意圖。如圖所示，本發明之 光學引擎2’ ’係包括：光源產生器2〇、第一子平板分光器 21、第一子平板分光器22、第二偏轉器23b、主平板分光 器24、第三偏轉器23c、反射器27、及光閥25。 所述之光源產生器20,係提供照明光束2〇〇。 所述之第-子平板分光器21，係設置於該照明光束 200之投射路徑上，並將該照明光束2〇〇分為自該第一子 平板分光器21反射之第一偏振光束2〇〇&及穿透該第一子 平板分光器21之第二偏振光束2〇〇b。 所述之第二子平板分光器22’係設置於該第一偏振光 束200a之投射路徑上，並反射該第一偏振光束2〇〇a。 所述之第二偏轉器23b係設置於該第二子平板分光器 22反射之第一偏振光束2〇〇a的投射路徑上，以供該第一 偏振光束200a牙透並轉換成第二偏振光束2〇〇b。 所述之主平板分光器24’係設置於自該第一子分光器 21牙透之第一偏振光束200b及該第二偏轉器23b轉換之 第二偏振光束200b的投射路徑上，以供該些第二偏振光束 200b穿透主平板分光器24。 111961 13 201237538 所述之第三偏轉器23c係為四分之一波長（λ/4)板 之，並設置於穿透該主平板分光器24之第二偏振光束200b 的投射路徑上，以供該些第二偏振光束200b穿透並將相位 偏轉45°而成為第三光束200c’以令該第三光束200c與該 第二偏振光束200b之相位差45°。 所述之反射器27,係可為反射鏡且設置於穿透該第三 偏轉器23c之第三光束200c的投射路徑上，以將該些第三 光束200c反射回至該第三偏轉器23c，令該第三光束2〇〇c 穿透該第三偏轉器23c，以將該第三光束2〇〇c之相位再偏 轉45而成為第一偏振光束200a，且使該第一偏振光束 200a投射至該主平板分光器24’以令該主平板分光器24 反射該第一偏振光束200a。 所述之光閥25，係設置於被該主平板分光器24反射 該第一偏振光束200a之投射路徑上，並將該些第一偏振光 束200a轉換為影像光束250，且該影像光束25〇穿透該主 平板分光器24。 依上所述之光學引擎2，，本發明復提供一種投影裝 置，係包括：光學引擎2,及投影鏡頭26。 所述之投影鏡頭26,係設置於穿透該主平板分光器 24後之該影像光束250之投射路徑上。 第四實施例 整及^ ^第5圖，係為本發明所揭露之本發明之光學引 擎及杈衫裝置的第四實施例示意圖。 本實施例與第三實施例大致相同，其差異主要在於本 111961 14 201237538 實施例將用以轉換光束偏振方向之偏轉器，如圖所示之半 .波長（又/2)板之之第一偏轉器23a設置於穿透該第一子平 板分光器21之第二偏振光束20〇b的投射路徑上，以供該 第二偏振光束2GGb穿透並轉換成第—偏振光束鳥，而 該第二子平板分光器22反射之第一偏振光束2〇〇a的投射 路控上則未設有第二偏轉器23b。同時，本實施例中所採 用之主平板分光器24係供第一偏振光束2〇如穿透，並用 以反射經第三偏轉器23c轉換之第二難光束細b，而光 閥25係將该些第二偏振光束2_轉換為影像光束乃〇， 且該影像光束250穿透該主平板分光器24。 本發明之光學引擎及投影裝置，係於該光源產生器所 發出之照明光束的投射路徑上設置第一子平板分光器以 將該光束分成相位差9〇。之第一偏振光束及第二偏振光 j ;該第二子平板分光器則反射該第-偏振光束，使該第 偏振光束及第二偏振光束之投射路徑相同，並視選擇在 該^二偏振光束或第一偏振光束之投射路徑上搭配第一偏 轉器或第二偏轉器以得到相同偏振方向之光束。例如，以 第-偏轉器轉換得到第一偏振光束；或以第二偏轉器轉換 成第二偏振光束。再藉由主平板分光器將該相同偏振方向 之光束反射至光閥以轉換為影像光束；或者，該主平板分 “器可i、該相同偏振方向之光束穿透，並於該光束穿透之 路侵上設置第三偏轉器及反射器，於該光束經第三偏轉器 轉換成第三光束後，經反射器反射，復穿透第三偏轉器轉 換成主平板分絲可反射之光束，之後經光哺換為影像 111961 15 201237538 光束，並穿透該主平板分光器及投影鏡頭。據此，本發明 之光學引擎及投影裝置可使光源產生器所發出之照明光束 皆轉換為影像光束，並通過投影鏡頭，故有效地提高光能 量利用率，且使用尚分子膜極化分光器或石英玻璃光柵極 化分光器亦具有體積較小、成本低之優點，更能提供高晝 質及大尺寸之影像。上述實施例係用以例示性說明本發明 之原理及其功效’而非用於限制本發明。任何熟習此項技 藝之人士均可在不違背本發明之精神及範疇下，對上述實 施例進行修改。因此本發明之權利保護範圍，應如後述之 申請專利範圍所列。 【圖式簡單說明】 第1圖係為習知第M343 804號之本國專利「光學引擎 以及投影裴置」的示意圖； 第2圖係為本發明之光學引擎及投影裝置的第一實施 例不意圖； 第3圖係為本發明之光學引擎及投影裝置的第二實施 例示意圖； 第4圖係為本發明之光學引擎及投影裝置的第三實施 例示意圖；以及 第5圖係為本發明之光學引擎及投影裝置的第四實施 例不意圖。 【主要元件符號說明】 10 光源 1〇〇 光束 111961 16 201237538 100a 第一偏振光束 100b 第二偏振光束 11 南分子偏極分光片 12 光閥 120 影像光束 13 投影鏡頭 2 ' 2， 光學引擎 20 光源產生器 200 照明光束 200a 第一偏振光束 200b 第二偏振光束 200c 第三光束 21 第一子平板分光器 22 第二子平板分光器 23a 第一偏轉器 23b 第二偏轉器 23c 第三偏轉器 24 主平板分光器 25 光閥 250 影像光束 26 投影鏡頭 27 反射器 SI 第一偏振方向 S2 第二偏振方向The first polarized beam of Qno ° and the first polarized beam have a difference of two. And the phase source between the third beam and the first polarized beam produces the optical yoke and projection farm of the invention, and sets the first sub-plate cutter on the projection path of the illumination beam of the light. State, to divide the §Hail beam into phase-it it 4r^ difference 90 偏振 one polarized beam and the nr/: sub-plate concentrator reflect the same path of the second polarized beam of the first polarized light, with the first position The yawed weight projection path is converted into an image two-phase 5 hai main plate splitter for the phase of the mirror 11161 9 201237538 to penetrate with the beam of light, and a third deflector is disposed on the path of the beam penetration And the reflector is processed by the third deflector and the reflector, and then reflected by the main plate splitter to the light valve to be converted into an image beam. The optical engine and the projection device of the invention can convert the illumination beam emitted by the light source generator into an image beam and pass through the projection lens, thereby effectively improving the light energy utilization rate, and using the polymer film polarization beam splitter or quartz glass. The grating polarization beam splitter also has the advantages of small volume and low cost. [Embodiment] The embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can readily understand the other advantages and functions of the present invention from the disclosure. It is to be understood that the structure, the proportions, the size, and the like of the present invention are intended to be used in conjunction with the disclosure of the specification, and are not intended to limit the invention. The conditions are limited, so it is not technically meaningful. Any modification of the structure, change of the proportional relationship or adjustment of the size should remain in this book without affecting the effects and the objectives that can be achieved by the present invention. The technical content disclosed in the invention can be covered. In the meantime, the terms "a", "an" and "the" are used in the description, and are not intended to limit the scope of the invention, and the relative relationship is changed or adjusted. Substantially changing the technical content is also considered to be within the scope of the invention. First Embodiment Referring to Figure 2, there is shown a first embodiment of an optical engine and projection apparatus of the present invention. As shown, the optical engine 2 of the present invention includes: a light source generator 2, a first sub-plate beam splitter 21, a second sub-plate beam splitter 22, a first deflector 23a, and a main flat beam splitter. 24, and light valve 25. The light source generator 20 provides an illumination beam 2, and the illumination beam 2 emitted by the source generator 20 is a polarization source. The first sub-plate beam splitter 21 is disposed on a projection path of the illumination beam 200, and divides the illumination beam 2 into a first polarized beam 2 reflected from the first sub-plate beam splitter 21 〇a and a first polarized light beam 200b penetrating the first sub-plate. The first polarized light beam 200a has a first polarization direction S1, and the second polarized light beam 2〇〇b has a second polarization direction S2; wherein the first polarization direction S1 can be? Polarization, and the second polarization direction S2 is S polarization; or the first polarization direction S1 may be S polarization ' and the second polarization direction S2 is p polarization, so the first polarization beam 200a and the second polarization beam The phase difference of 200b is 9〇. . The second sub-plate beam splitter 22 is disposed on the projection path of the first polarized beam 200a and reflects the first polarized beam 2 〇〇 & The first deflection benefit 23a is a half-wavelength (;\_/2) plate and is disposed on the projection path of the second polarized light beam 200b to cause the second polarized light beam 200b to penetrate the first deflector 23a. And converted into a first polarized beam 2〇〇3. The "converted or converted first polarized light beam 2a" referred to herein and hereinafter refers to the same phase as the first polarized light beam 2a reflected by the second sub-plate beam splitter 22. The main plate splitter 24 can be a polymer 犋 polarized beam splitter or a 111961 11 201237538 quartz glass grating polarizing beam splitter as the first sub-plate splitter 21 and the second sub-plate splitter 22. The main plate splitter 24 is disposed on a projection path of the first polarized light beam 2〇〇& and the first polarized light beam 2〇〇a converted by the first deflector 23a. And reflecting the two first polarized beams 2〇〇a. The light valve 25 is disposed on a projection path of the first polarized light beams 200a reflected by the main plate splitter 24, and converts the first polarized light beams 200a into an image light beam 250, and the image light beam 250 penetrates the main plate splitter 24. According to the optical engine 2 described above, the present invention provides a projection apparatus comprising: an optical engine 2 and a projection lens 26. The projection lens 26 is disposed on a projection path of the image beam 250 after passing through the main plate splitter 24. Second Embodiment Referring to Figure 3, a second embodiment of the optical engine and projection apparatus of the present invention disclosed in the present invention is shown. The present embodiment is substantially the same as the first embodiment, and the difference mainly lies in that the deflector for converting the polarization direction of the beam is set in the embodiment, and the second deflector 23b of the half-wavelength (Λ/2) plate is arranged as shown. On the projection path of the first polarized light beam 2〇〇a reflected by the second sub-plate beam splitter 22, the first polarized light beam 200a is penetrated and converted into a second polarized light beam 2〇%, and penetrates the first The first deflector 23a is not provided on the projection path of the second polarized light beam 2〇沘 of the sub-plate beam splitter 21. At the same time, the main flat beam splitter 24 used in the embodiment is for reflecting the two second polarized light beams 2〇〇b, and the light valve 25 is for converting the second polarized light beams 2〇〇b into the image light beam 111961. 12 201237538 250' and the image beam 250 f passes through the main plate beam splitter μ. As used herein and hereinafter, "two or more beams" of the job or conversion means having the same phase as the second polarized light beam penetrating the first sub-plate beam splitter 21. THIRD EMBODIMENT Please refer to Fig. 4, which is a schematic view showing a third embodiment of the optical engine and projection apparatus of the present invention. As shown, the optical engine 2'' of the present invention includes: a light source generator 2, a first sub-plate beam splitter 21, a first sub-plate splitter 22, a second deflector 23b, a main flat beam splitter 24, The third deflector 23c, the reflector 27, and the light valve 25. The light source generator 20 provides an illumination beam 2〇〇. The first sub-plate beam splitter 21 is disposed on a projection path of the illumination beam 200, and divides the illumination beam 2 into a first polarization beam 2 reflected from the first sub-plate beam splitter 21 〇& and a second polarized light beam 2〇〇b penetrating the first sub-plate beam splitter 21. The second sub-plate beam splitter 22' is disposed on the projection path of the first polarized beam 200a and reflects the first polarized beam 2〇〇a. The second deflector 23b is disposed on a projection path of the first polarized light beam 2〇〇a reflected by the second sub-plate beam splitter 22, so that the first polarized light beam 200a is erected and converted into a second polarization. Beam 2〇〇b. The main flat beam splitter 24' is disposed on a projection path of the first polarized light beam 200b that is toothed by the first sub-beam splitter 21 and the second polarized light beam 200b that is converted by the second deflector 23b. The second polarized light beams 200b penetrate the main plate beam splitter 24. 111961 13 201237538 The third deflector 23c is a quarter-wavelength (λ/4) plate and is disposed on a projection path of the second polarized light beam 200b penetrating the main plate beam splitter 24 for The second polarized light beams 200b penetrate and deflect the phase by 45° to become the third light beam 200c' such that the phase of the third light beam 200c and the second polarized light beam 200b are 45° out of phase. The reflector 27 can be a mirror and disposed on a projection path of the third beam 200c penetrating the third deflector 23c to reflect the third beam 200c back to the third deflector 23c. And causing the third light beam 2〇〇c to penetrate the third deflector 23c to deflect the phase of the third light beam 2〇〇c by 45 to become the first polarized light beam 200a, and to make the first polarized light beam 200a Projected to the main plate splitter 24' to cause the main plate splitter 24 to reflect the first polarized beam 200a. The light valve 25 is disposed on the projection path of the first polarized light beam 200a reflected by the main flat beam splitter 24, and converts the first polarized light beams 200a into the image light beam 250, and the image light beam 25〇 The main plate splitter 24 is penetrated. According to the optical engine 2 described above, the present invention provides a projection apparatus comprising: an optical engine 2, and a projection lens 26. The projection lens 26 is disposed on a projection path of the image beam 250 after passing through the main plate splitter 24. The fourth embodiment is a schematic view of a fourth embodiment of the optical engine and the shirt device of the present invention disclosed in the present invention. This embodiment is substantially the same as the third embodiment, and the difference mainly lies in the first embodiment of the present invention, which uses a deflector for converting the polarization direction of the beam, as shown in the first half of the wavelength (again/2) plate. The deflector 23a is disposed on a projection path of the second polarized light beam 20〇b penetrating the first sub-plate beam splitter 21 for the second polarized light beam 2GGb to penetrate and be converted into a first-polarized beam bird, and the first The second deflector 23b is not provided on the projection path of the first polarized light beam 2〇〇a reflected by the two sub-plate beam splitters 22. In the meantime, the main flat beam splitter 24 used in the embodiment is configured such that the first polarized light beam 2 penetrates and reflects the second difficult light beam b converted by the third deflector 23c, and the light valve 25 is The second polarized light beams 2_ are converted into image light beams, and the image light beams 250 penetrate the main plate beam splitter 24. In the optical engine and projection apparatus of the present invention, a first sub-plate beam splitter is disposed on a projection path of an illumination beam emitted from the light source generator to divide the beam into a phase difference of 9 〇. The first polarized light beam and the second polarized light j; the second sub-plate beam splitter reflects the first-polarized light beam, so that the projection paths of the first polarized light beam and the second polarized light beam are the same, and the polarization is selected The first deflector or the second deflector is coupled to the projection path of the beam or the first polarized beam to obtain a beam of the same polarization direction. For example, the first polarized beam is converted by the first deflector or converted to the second polarized beam by the second deflector. And the light beam of the same polarization direction is reflected by the main plate splitter to the light valve to be converted into an image beam; or the main plate can be penetrated by the light beam of the same polarization direction and penetrated through the light beam The road is invaded with a third deflector and a reflector. After the beam is converted into a third beam by the third deflector, it is reflected by the reflector, and the third deflector is converted into a beam that can be reflected by the main flat wire. Then, the light is fed into the image 111961 15 201237538 beam, and penetrates the main plate beam splitter and the projection lens. Accordingly, the optical engine and the projection device of the present invention can convert the illumination beam emitted by the light source generator into an image. The light beam passes through the projection lens, so the optical energy utilization rate is effectively improved, and the use of the molecular aperture polarization beam splitter or the quartz glass grating polarization beam splitter also has the advantages of small volume and low cost, and can provide high quality. And the large size of the image. The above embodiments are intended to illustrate the principles of the invention and its function, and are not intended to limit the invention. Anyone skilled in the art can The above embodiments are modified without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be as described in the scope of the patent application described below. [Simplified description of the drawings] Fig. 1 is a conventional M343 FIG. 2 is a schematic diagram of a first embodiment of an optical engine and a projection apparatus of the present invention; FIG. 3 is an optical engine and a projection apparatus of the present invention; FIG. 4 is a schematic view showing a third embodiment of the optical engine and projection apparatus of the present invention; and FIG. 5 is a fourth embodiment of the optical engine and projection apparatus of the present invention. [Main component symbol description] 10 Light source 1 〇〇 beam 111961 16 201237538 100a First polarized beam 100b Second polarized beam 11 South molecular polarized beam splitter 12 Light valve 120 Image beam 13 Projection lens 2 ' 2, Optical engine 20 Light source 200 illumination beam 200a first polarized light beam 200b second polarized light beam 200c third light beam 21 first sub-plate splitter 22 second sub-plate splitter 23a first deflector 23b second deflector 23c third deflector 24 main plate Beam splitter 25 Light valve 250 Image beam 26 Projection lens 27 Reflector SI First polarization direction S2 Second polarization direction