200914979 九、發明說明： 【發明所屬之技術領域】 本發明涉及投影機，特別涉及一種lcd投影機。 【先前技術】 $ $ LCD彳又衫機主要分為穿透式和反射式兩種。其基 本工作原理均為藉由施加圖像電訊號，控制液晶分子之旋 轉，以調變光線之偏振態，從而形成視覺可以感知之全彩 晝面。 對於穿透式LCD投影機，每一晝素區域内包括可以透 光之液晶分子和控制液晶分子旋轉之薄臈電晶^ (TFT， Thin Fihn Transitor)。因薄膜電晶體為半導體器件，血型 採用非晶材料製成，該種非晶材料對光電效應比較敏感。 故’為避免光線直接照射薄膜電晶體，_，為避免相鄰 晝素之間之渗色問題，每—晝素均塗佈有較低反射率之金 屬材料，稱為黑矩陣（Black Matrix )。因而，從光源出射 之光線經過LCD®板時’因為部分光線被黑矩陣吸收，導 致面板之開口率（Aperture Rati〇)較低。開口率係指在單 兀晝素内，實際可透光區之面積與單元晝素總面積之比 率’開口率越高’光線之透過率也越高。 為了提高面板之開口率，面板製造商一般會在面板内 4例如透明導電玻璃基板上形成一片固定式之微透鏡陣 列（MLA，Micro Lens Array)。由於微透鏡對光線具有會聚 作用，使得原本入射到黑矩陣上之光線可以透過透光之液 曰曰分子’從而提高面板之開口率。然而，從面板出射之圖 200914979 ’由此會引入大角度入 進而使投影晝面之解析 像光入射到投影鏡頭時係發散光束 射光線’減小投影鏡頭之光圈值， 度降低。 【發明内容】 有鑒於此，有必要提供_種改變入射到投影鏡 線之純=，錢投影晝面具有較㈣析度之投影機。 種&痛，用於向顯示螢幕投射®像晝面。投影機 包括光源，液晶調變器，投影鏡頭，以及透鏡元件:= 用於發出近似平;'、 曰抑—y 先線。液晶調變器包括微透鏡陣列和液 日日早兀’微透鏡陣列用於 以透㈣P… 源發出之近似平行光線會聚 早7"。投影鏡頭將從液晶單元出射之光線投射 1 :頁不螢幕上。透鏡S件與微透鏡陣列構成焦距可以調節 2=合；藉由調節透鏡組合之有效焦距，改變入射到 杈衫鏡頭之光線之發散角。 上述投影機藉由調節可動微透鏡組和微透鏡陣列之間 之距離’改變透鏡組合之有效焦距，進而改變人射到投參 ，頭上之光線之發散角，使投射晝面具有難之解析度二 【實施方式】 以下藉由具體實施例配合所附圖式之詳細說明，當更 易瞭=本發明之目的、技術内容、特點及其所達成之功效。 請參閲圖1，一種三片式LCD投影機10，用於向顯示 螢幕44上投射圖像晝面。投影機10包括光源12，積分透 鏡14,偏振轉換器16，分色鏡2〇、24，反射鏡22、26、 28延遲鏡262、264，可動透鏡組23、25、27，液晶調變 200914979 32 34、36 ’合光稜鏡38，以及投影鏡頭42。上述各 光學元件被配置成位於光源12和顯示螢幕料之 ‘成光學通路。 Φ 光源12可以為高塵鹵素燈或者高麼果燈，其 ⑵和反射燈罩124。反射燈罩124可以為拋物形狀，用^ 將燈絲122發出之光線轉換成近似平行光線，該平行出射 光線沿光束傳播路徑上具有近似圓形之截面。 積分透鏡14包括-對相背設置之積分鏡片i4a和 Μ#145具有複數微透鏡，並具有與液晶 變 34、36中之長方形液晶面板基本相同之尺寸。 積分鏡片14a和14b使上述從光源12出射之圓形截面之光 束均勾分佈在液晶面板上。 偏振轉換ϋ 1M目對積分透鏡14設置，用於改變從積 /刀透鏡U出射光線之偏振狀態，使出射光線 \例如將s光轉換成Ρ光，從而從偏振轉換器16 之光線為Ρ光。 分色鏡20、24被設置成與偏振轉換器具有-定之夾 角;例如45度。分色鏡2〇、24具有基本平行之分光面逝、 ，该寻分光面202、242分別鑛有對不同可見光譜敏感 之光學薄膜。從偏振轉換器16出射之光線首 色 =之分光面上搬’該分光面2〇2對紅色光透明，而反 =色'(綠色光和藍色光之混合）。經分色鏡反射之 月先然後入射到分色鏡24之分光面如上，光 242對藍色光透明，而反射綠色光。從而，經分色鏡20、 200914979 .24作用後之光束被分離成紅（R )、綠（G )、藍（B )三種 色光。其中，從分色鏡20透射之紅色光經反射鏡22反射 後’入射到液晶調變器34上；從分色鏡24反射之綠色光 入射到液晶調變器32上；從分色鏡24透射之藍色光依次 經反射鏡26、28兩次反射作用後入射到液晶調變器36上。 在分色鏡24和反射鏡26之間以及反射鏡26、28之間分別 設置延遲鏡262、264，該延遲鏡262、264用於使藍色光 與綠色光和紅色光具有基本相等之光學路徑長度。 液晶調變器32、34、36分別用於根據由圖像輸入訊號 轉換成之電驅動訊號作用，改變液晶分子之旋轉方向，進 而改變各色光之偏振狀態。液晶調變器32、34、36分別包 括微透鏡陣列324、344、364和液晶單元326、346、366。 微透鏡陣列324、344、364在二維方向上規則地排列有複 數微透鏡322、342、362。紅、綠、藍三種色光分別經微 透鏡322、342、362會聚後，再分別透過液晶單元326、 346、366 ’提高液晶面板之開口率。經液晶調變器％、、 36调變後之二色光入射到合光稜鏡％，該合 射綠色光’而反射紅色光和藍色光，從而三色光被混合= 一束光入射到投影鏡頭42上。投影鏡頭42包括多片具有 正光焦度或者負光焦度之球面或者非球面透鏡，以將該混 合後之光束投射到顯示螢幕44上。 月併參閱目2 ’因為投影鏡頭42是由多片透鏡所構 成，而透鏡對不同角度之人射光線存在成像品質之差里， 所以投射到顯示螢I 44上各區域内之晝面解析度也存在 200914979 差異。其中’中心圓形444示意之區域對應投影鏡頭42 靠近光軸部分投射之光線，該部分光線之入射角度較小， 相應地具有較小之球面像差、色差、畸變像差等，因此晝 面解析度較而。而周邊四個圓形442示意之區域對應從投 影鏡頭42以較大角度投射之光線’該部分光線因為入射角 度較大，所以具有比較明顯之像差、色差、畸變像差等， 晝面解析度較低。 #丹次參閲圖1，在微透鏡陣列324、344、364之乂 射光路上’分別設置多片可動微透鏡組23、25、27。可鸯 微透鏡組23位於分色鏡24和微透鏡陣列324之間；可鸯 微透鏡、’且25位於反射鏡22和微透鏡陣列344之間；可棄 微透鏡組27位於反射鏡28和微透鏡陣列364之間。微遠 鏡組23、25、27在與入射光路垂直之二維方向上分別_ 複數微透鏡232、252、272。藉由調節可動微透鏡組23、 25、27以及相對應之微透鏡陣列324、344、364之間之距 變人射到投影鏡頭42之光線之發散角，使光線集中 儘置罪近於絲部分，從而改善投影晝面之解析戶。 ?“請—併參閱13，以可動微透鏡，“色鏡 24和液晶調變哭32夕：^、凑# # τ 巴窥 動微透Μ Μ之間設置有四片可 ㈣透鏡、、且23,母片可動微透鏡組 32…個邊緣區域相對應，也 二：鏡陣列 犯-立r-, ，.、兵不蛩綦44之周邊圓 ^不思區域442相對應。可動微透 與微透錄瞌而丨7〜 之微透鏡232 之微透鏡322 — 一相對。假扣_竹 與微透鏡322$ μ 々奵假叹微透鏡232 之間之距離為ΔΧ，藉由移動調節機制，例 10 200914979 如微型馬達改變它們之間之距離ΔΧ，改變從液晶單元326 出射之光線之發散角度，從而使得投影晝面每一佥 •析度均可以得到改善。 旦” ¥ 月多閱圖4，投影機10還包括控制器5 2和微型馬達 54 °其中控制Ε 52電性連接微型馬達54。控制器52用於 根據用戶手動輸入之控制訊號或者投影機10自動產生之 控制汛號控制微型馬達54驅動可動微透鏡組23产苴 軸方向來回移動。假設可動微透鏡組23中之微透^232 之像方焦距為Fr ’微透鏡陣列324中之微透鏡之像 方焦距為F/’微透鏡232和微透鏡您之間之距離為 丄’則由微透鏡232和微透鏡322構成之透鏡組之有效 '、、、距為F effl=(w)/(Fr+IV_AXi)。近似平行入射光束 經微透鏡232和微透鏡322之會聚作用後，以發散角^ 入射到投影鏡頭42上。 1 發“ ΐ in z ”—投影機1 〇藉由自動判別機制 r/二 周邊某一區域44 2出現晝面解析不良200914979 IX. Description of the Invention: [Technical Field] The present invention relates to a projector, and more particularly to an LCD projector. [Prior Art] $ $ LCD 彳 衫 machine is mainly divided into two types: transmissive and reflective. The basic working principle is to control the rotation of the liquid crystal molecules by applying an image signal to modulate the polarization state of the light, thereby forming a visually perceptible full-color surface. For a transmissive LCD projector, each pixel region includes a liquid crystal molecule that can transmit light and a thin TFT (TFT) that controls the rotation of the liquid crystal molecules. Since the thin film transistor is a semiconductor device, the blood type is made of an amorphous material, and the amorphous material is relatively sensitive to photoelectric effects. Therefore, in order to avoid direct illumination of the thin film transistor, _, in order to avoid the problem of bleeding between adjacent elements, each element is coated with a metal material with a lower reflectivity, called Black Matrix. . Therefore, when the light emitted from the light source passes through the LCD® board, the partial aperture is absorbed by the black matrix, resulting in a lower aperture ratio (Aperture Rati〇). The aperture ratio refers to the ratio of the area of the actual light-transmittable region to the total area of the unit cell in the monoterpene. The higher the aperture ratio, the higher the transmittance of the light. In order to increase the aperture ratio of the panel, the panel manufacturer generally forms a fixed microlens array (MLA) on the panel 4, such as a transparent conductive glass substrate. Since the microlens has a converging effect on the light, the light originally incident on the black matrix can pass through the liquid permeable molecules, thereby increasing the aperture ratio of the panel. However, the image from the panel 200914979 ′′ will introduce a large angle into the projection surface of the projection surface, and the image light will be diverged when the projection lens is incident on the projection lens. The aperture value of the projection lens is reduced, and the degree is reduced. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a projector that changes the purity of the projection lens to the projection mirror, and has a (four) resolution. Kind & pain, used to project the screen to the display screen. The projector includes a light source, a liquid crystal modulator, a projection lens, and a lens element: = used to emit an approximation flat; ', depreciation - y first line. The liquid crystal modulator includes a microlens array and a liquid ray array. The microlens array is used to converge the approximately parallel rays emitted by the (four) P... source. The projection lens projects the light emitted from the liquid crystal cell. 1 : The page is not on the screen. The focal length of the lens S piece and the microlens array can be adjusted 2=close; by adjusting the effective focal length of the lens combination, the divergence angle of the light incident on the lens of the shirt is changed. The projector adjusts the effective focal length of the lens combination by adjusting the distance between the movable microlens group and the microlens array, thereby changing the divergence angle of the light incident on the head, so that the projection surface has a difficult resolution. [Embodiment] Hereinafter, the detailed description of the drawings with reference to the specific embodiments, the ease of the present invention, the technical contents, the features and the effects achieved by the present invention. Referring to FIG. 1, a three-chip LCD projector 10 is used to project an image plane onto a display screen 44. The projector 10 includes a light source 12, an integrator lens 14, a polarization converter 16, dichroic mirrors 2, 24, mirrors 22, 26, 28 retardation mirrors 262, 264, movable lens groups 23, 25, 27, liquid crystal modulation 200914979 32 34, 36 'Combined light 38, and projection lens 42. Each of the optical elements described above is configured to be located in the optical path of the light source 12 and the display screen. Φ Light source 12 can be a high dust halogen lamp or a high fruit lamp, (2) and a reflector lamp cover 124. The reflector 124 can be parabolic in shape and converts the light from the filament 122 into approximately parallel rays having an approximately circular cross-section along the beam propagation path. The integrator lens 14 includes a pair of oppositely disposed integrating lenses i4a and Μ#145 having a plurality of microlenses and having substantially the same dimensions as the rectangular liquid crystal panels of the liquid crystal layers 34, 36. The integrating lenses 14a and 14b distribute the above-described light beams of a circular cross section which is emitted from the light source 12 on the liquid crystal panel. Polarization conversion ϋ 1M is provided for the integrator lens 14 for changing the polarization state of the light exiting from the product/tool lens U, such that the outgoing light\for example converts the s light into a neon light, thereby dimming the light from the polarization converter 16 . The dichroic mirrors 20, 24 are arranged to have an angle with the polarization converter; for example 45 degrees. The dichroic mirrors 2, 24 have substantially parallel spectroscopic surfaces, and the dichroic planes 202, 242 are respectively exposed to optical films sensitive to different visible spectra. The light emitted from the polarization converter 16 is the first color = the split surface is moved. The split surface 2〇2 is transparent to red light, and the inverse color = (mix of green light and blue light). The light reflected by the dichroic mirror is then incident on the dichroic surface of the dichroic mirror 24 as above, and the light 242 is transparent to the blue light and reflects the green light. Therefore, the light beams which are applied by the dichroic mirror 20, 200914979.24 are separated into three colors of red (R), green (G), and blue (B). The red light transmitted from the dichroic mirror 20 is reflected by the mirror 22 and then incident on the liquid crystal modulator 34; the green light reflected from the dichroic mirror 24 is incident on the liquid crystal modulator 32; from the dichroic mirror 24 The transmitted blue light is twice reflected by the mirrors 26 and 28 and then incident on the liquid crystal modulator 36. Between the dichroic mirror 24 and the mirror 26 and between the mirrors 26, 28 are respectively provided with retarding mirrors 262, 264 for making the blue light and the green light and the red light have substantially equal optical paths. length. The liquid crystal modulators 32, 34, 36 are respectively configured to change the rotation direction of the liquid crystal molecules according to the action of the electric driving signals converted by the image input signals, thereby changing the polarization states of the respective colors of light. The liquid crystal modulators 32, 34, 36 include microlens arrays 324, 344, 364 and liquid crystal cells 326, 346, 366, respectively. The microlens arrays 324, 344, 364 are regularly arranged with a plurality of microlenses 322, 342, 362 in a two-dimensional direction. The red, green and blue colors are respectively concentrated by the microlenses 322, 342, and 362, and then the liquid crystal cells 326, 346, and 366' are respectively used to increase the aperture ratio of the liquid crystal panel. The dichroic light modulated by the liquid crystal modulators %, 36 is incident on the combined light 稜鏡%, and the combined green light 'reflects the red light and the blue light, so that the three colors of light are mixed = one light is incident on the projection lens 42. The projection lens 42 includes a plurality of spherical or aspherical lenses having a positive power or a negative power to project the mixed light beam onto the display screen 44. See also item 2 'Because the projection lens 42 is composed of a plurality of lenses, and the lens has a difference in imaging quality between different angles of human light, so the projection resolution is projected into each region on the display I 44 There is also a 200914979 difference. The area indicated by the center circle 444 corresponds to the light projected by the projection lens 42 near the optical axis portion, and the incident angle of the portion of the light is small, correspondingly having small spherical aberration, chromatic aberration, distortion aberration, etc. The resolution is relatively high. The area indicated by the four surrounding circles 442 corresponds to the light projected from the projection lens 42 at a large angle. The portion of the light has a relatively large incident angle, so that it has relatively obvious aberration, chromatic aberration, distortion aberration, etc. The degree is low. Referring to Fig. 1, a plurality of movable microlens groups 23, 25, 27 are respectively disposed on the pupil paths of the microlens arrays 324, 344, and 364. The collapsible microlens group 23 is located between the dichroic mirror 24 and the microlens array 324; the microlens, 'and 25 are located between the mirror 22 and the microlens array 344; the disposable microlens group 27 is located at the mirror 28 and Between the microlens arrays 364. The microlens groups 23, 25, 27 are respectively _ plural microlenses 232, 252, 272 in a two-dimensional direction perpendicular to the incident optical path. By adjusting the divergence angle of the light between the movable microlens group 23, 25, 27 and the corresponding microlens arrays 324, 344, 364 and the light incident on the projection lens 42, the light is concentrated and the sin is close to the silk. Partly, to improve the resolution of the projection surface. "Please - and refer to 13, to move the microlens," color mirror 24 and liquid crystal change to cry 32 eve: ^, make # # τ 巴 窥 微 微 微 设置 设置 设置 设置 设置 设置 设置 设置 四 四 四 四 四 四 四 四 四 四23, the master piece movable microlens group 32...the edge area corresponds to the same, and also the second: the mirror array commits the vertical r-, ,, and the surrounding circle of the soldier does not care about the area 442. The movable micro-transparent is opposite to the microlens 322 of the microlens 232 of the micro-lens 微7~. The distance between the fake buckle _ bamboo and the microlens 322$ μ 々奵 々奵 微 microlens 232 is ΔΧ, and by moving the adjustment mechanism, the example 10 200914979 changes the distance ΔΧ between them by the micro motor, and the change is emitted from the liquid crystal unit 326. The divergence angle of the light, so that each resolution of the projection surface can be improved. The projector 10 further includes a controller 52 and a micro motor 54°, wherein the control unit 52 is electrically connected to the micro motor 54. The controller 52 is used for the control signal or the projector 10 manually input according to the user. The automatically generated control nickname control micromotor 54 drives the movable microlens group 23 to move back and forth in the direction of the axis. It is assumed that the image focal length of the micro permeable image in the movable microlens group 23 is the microlens in the Fr 'microlens array 324. The focal length of the image is F/'the distance between the microlens 232 and the microlens is 丄', then the effective lens of the lens group composed of the microlens 232 and the microlens 322 is ',, and the distance is F effl=(w)/ (Fr+IV_AXi). The approximately parallel incident beam passes through the convergence of the microlens 232 and the microlens 322, and is incident on the projection lens 42 at a divergence angle ^. 1 "“ in z" - the projector 1 is automatically discriminated Mechanism r / two peripheral areas 44 2 appear poorly resolved
猎由㈣可動微透鏡組23和微透鏡陣列324之間之上 離改變透鏡組合之有效隹距F I j如猎由控制器52驅動微型巧违^ 則由微透鏡—構成之透樹^ Γ r )/(w^ _>Feffl。由於透鏡之焦距越長，對光線之會 弱，從而從液晶調變器32、34、36出射之光線以較小之： 11 200914979 散角θ2(θ2<Θι)入射到投影鏡頭42上。因為靠近光軸並 以^角度入射之光線具有較小之球面像差，色差，畸變像 差等，從而投影晝面解析不良之區域得到了改盖。 同時，藉由增大可動微透鏡組23和微透鏡陣列324 之間之距離ΔΧ使光線到投影鏡頭42具有較小之入射角度 θ’也即投影鏡頭42㈣人射光線具有較大之光圈值 心不同之人射Μ θ對應不同之光圈值F，所以在近轴 先線情形之下，對於固定焦距之投影鏡頭，還可以進一步 藉由調節可動微透鏡組23相對微透鏡陣列324之間之距離 △X’改變投影鏡頭之光圈值，從而調節投影晝面之亮度 對比度等。 70 ^ 上述投影機10藉由調節其可動微透鏡組23和微透鎖 陣=324之間之距離，改變微透鏡232和微透鏡322構成 之、鏡、、且之有效焦距，進而改變入射到投影鏡頭上之光線 之會聚角度，從而使經投影鏡頭4 2投射到顯示榮幕4 4上 =面具有較佳之解析度。進—步，在近軸光線情形下， :由改變投影鏡頭42對入射光線之光圈值，還可以 面之亮度和對比度。 旦 術且I:解，以上僅為本發明之較佳實施方式，所屬技 一有通吊知識者應當認識到在此基礎上可以作一定之辦 更，而不脫離本發明之保護範圍。 交 鹆、秀：一 ’僅對投影機1〇之—個液晶調變器對應設置可動 城透鏡組’例如，僅對靡游a ▲ * 十應液0曰调邊态32設置可動微透鏡組 ^僅對應液晶調變器34設置可動微透鏡組25，亦 12 200914979 .或僅對應液晶調變器36設置可動微透鏡组u，以 應改變綠色光或者藍色光戋者 , 紅色先入射到投影鏡頭42 之光線之發散角度’改善投影畫面之解析度。 其二，僅對投影機1G之二個液晶調變器對應設置可動 微鏡組’例如，僅對應液晶調變器32和36分別設置可 ^微透鏡組23和27，以改變綠色光和藍色光人射到投影 角度，或者僅對應液晶調變器32和34分別 „微透鏡組23和25’以改變綠色光和紅色光入射 到投影鏡頭42之光線角产，赤去 又或者僅對應液晶調變器34和 :“:“又置可動微透鏡组25和27，以改 光人射到投影鏡頭42之光線之發 面之解析度。 知放角度〜而改善投影晝 其三，對投影機10之二個饬曰 ^^^, p —個液日日凋變态均對應設置可動 鏡即對應液晶調變器32、34和36分別設置 微透鏡組23、25和27 ,、…士 刀別口又置可動 Α ^ ή 矛27,以同時改變綠色光、紅色光和藍 色、入射到投影鏡頭42之光線之發散角产 晝面之解析度。 改善投影Hunting by (4) between the movable microlens group 23 and the microlens array 324, the effective pupil distance FI j is changed from the lens combination. If the hunting is driven by the controller 52, the micro lens is formed by the microlens. ) / (w ^ _ > Feffl. Because the focal length of the lens is longer, the light will be weak, so that the light emitted from the liquid crystal modulators 32, 34, 36 is smaller: 11 200914979 The angle θ2 (θ2<Θι It is incident on the projection lens 42. Since the light incident near the optical axis and incident at the angle has a small spherical aberration, chromatic aberration, distortion aberration, etc., the area where the projection surface is poorly analyzed is retouched. By increasing the distance ΔΧ between the movable microlens group 23 and the microlens array 324, the light has a smaller incident angle θ′ to the projection lens 42. That is, the projection lens 42 (4) the person who emits light has a larger aperture value. The shot θ corresponds to a different aperture value F, so in the case of the paraxial first line, for the fixed focal length projection lens, the distance ΔX' between the movable microlens group 23 and the microlens array 324 can be further adjusted. Change the aperture of the projection lens , thereby adjusting the brightness contrast of the projection pupil, etc. 70 ^ The projector 10 is configured to change the distance between the movable microlens group 23 and the micro-lens array 324 by changing the distance between the microlens 232 and the microlens 322. And the effective focal length, thereby changing the convergence angle of the light incident on the projection lens, so that the projection lens 42 is projected onto the display screen 4 = the surface has a better resolution. The step is in the paraxial In the case of light, the aperture value of the incident light by changing the projection lens 42 can also be the brightness and contrast of the surface. The above is only a preferred embodiment of the present invention, and the above is only a general knowledge of the present invention. It should be recognized that on this basis, it can be done in a certain way without departing from the scope of protection of the present invention. 鹆, show: a 'only for the projector 1 — 个 个 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶'For example, only the movable a ▲ * ten should be in the 0 state of the edge 32 to set the movable microlens group ^ only the liquid crystal modulator 34 is set to the movable microlens group 25, also 12 200914979. Or only corresponding to the liquid crystal modulator 36 set movable micro transparent The group u, in order to change the green light or the blue light, the divergence angle of the red light incident on the projection lens 42 'improves the resolution of the projected picture. Second, only the two liquid crystal modulators of the projector 1G correspond to Setting the movable micromirror group', for example, only the liquid crystal modulators 32 and 36 are respectively provided with the microlens groups 23 and 27 to change the green light and the blue light human to the projection angle, or only correspond to the liquid crystal modulator 32 and 34 respectively, the microlens groups 23 and 25' change the ray angle of the green light and the red light incident on the projection lens 42, and either go to the liquid crystal modulator 34 and: ":" again set the movable microlens group 25. And 27, in order to change the resolution of the light surface of the projection lens 42. Knowing the angle of the ~ to improve the projections, the third, the projector 10 of the two 饬曰 ^ ^ ^, p - a liquid daily change state corresponding to the setting of the movable mirror that corresponds to the liquid crystal modulator 32, 34 and 36 respectively The microlens groups 23, 25, and 27 are disposed, and the knives are set to move the 矛^ 矛 spears 27 to simultaneously change the divergence angles of the green light, the red light, and the blue light incident on the projection lens 42. Resolution. Improve projection
♦ 27如述二種可變更之情形’可動微透鏡組23、25 和27可以為一片也可 J 可_、悉心 了以為夕片。在一種變更實施方式中， 了動微透鏡組23、25釦97丄π ,、丄 液晶調變器32、34和3“山 置成位於相對應之 25和27分料==光路上°可動微透鏡組仏 巧節之二:1 24、344、364構成焦距可以 微透鏡陣列324、344、364夕„ 25和27與 之間之距離，減小入射到投影 13 200914979 鏡頭二之光狀發散肖，㈣㈣畫面之解析度。 良丁、上所述’本發明符人私 利申請。•’以上僅為本二;: = = :技蟄之人士’在援依本案創作精神所作之等：：热悉本 ，皆應包含於以下之申請專利範圍内。 > >飾或變 200914979 .【圖式簡單說明] 圖1為投影機之具體結構示意圖。 圖。圈2為顯不螢幕上不同區域顯示晝面解析度之示意 微透鏡陣列 之示意圖。 圖3為圖1所示投影機中可動微透鏡組和 圖4為圖3所示投影機中可動微透鏡組之微透鏡與微 透鏡陣列之微透鏡之位置關係之一種示意圖。 圖5為圖3所示投影機中可動微透鏡組之微透鏡與微 透鏡陣列之微透鏡之位置關係之另一種示意圖。 15 200914979 【主要元件符號說明】 投影機 10 光源 12 積分透鏡 14 偏振轉換器 16 分色鏡 20、24 反射鏡 22 、 26 、 28 延遲鏡 262 ' 264 可動透鏡組 23 、 25 ' 27 微透鏡陣列 324 微透鏡 232、322 液晶調變器 32、34、36 合光稜鏡 38 投影鏡頭 42 顯示螢幕 44 控制器 52 微型馬達 54 16♦ 27 As described in the two cases that can be changed, the movable microlens groups 23, 25, and 27 can be one piece or the other. In a variant embodiment, the movable microlens group 23, 25 is deactivated by 97 丄 π, and the 丄 liquid crystal modulators 32, 34 and 3 are placed in the corresponding 25 and 27 parts == optical path ° movable Microlens group 仏 2: 1 24, 344, 364 constitute the focal length can be microlens array 324, 344, 364 „ 25 and 27 and the distance between them, reduce the incident to the projection 13 200914979 lens two light divergence Xiao, (4) (4) The resolution of the picture. Liang Ding, supra, is applied for the personal benefit of the present invention. • 'The above is only this two;: = = : The person of the technical person's in the spirit of the creation of the case:: The heat of the book should be included in the scope of the following patent application. >> Decoration or change 200914979 . [Simple diagram of the drawing] Figure 1 is a schematic diagram of the specific structure of the projector. Figure. Circle 2 is a schematic representation of a schematic microlens array showing the pupil resolution in different areas of the screen. Fig. 3 is a view showing the positional relationship between the movable microlens group of the projector shown in Fig. 1 and the microlens of the movable microlens group and the microlens of the microlens array in Fig. 4; Fig. 5 is another schematic view showing the positional relationship between the microlens of the movable microlens group and the microlens of the microlens array in the projector shown in Fig. 3. 15 200914979 [Description of main component symbols] Projector 10 Light source 12 Integral lens 14 Polarization converter 16 Dichroic mirror 20, 24 Mirror 22, 26, 28 Delay mirror 262 ' 264 Movable lens group 23, 25 ' 27 Microlens array 324 Microlens 232, 322 Liquid crystal modulator 32, 34, 36 Light 稜鏡 38 Projection lens 42 Display screen 44 Controller 52 Micro motor 54 16