A7 B7 五、發明説明（） 本發明係關於一種高對比銀幕及其自對準製造方法。尤 有關於一種能將入射之有用光線之絕大部分予以逆反射回 觀眾處，並將有害光線之絕大部分予以於吸收，俾提高投 影機等所投射影像之對比的高對比銀幕。本發明並有關於 前述高對比銀幕之自對準製造方法。 習用投影機銀幕主要有兩種類型。第一型者爲白色布 幕，其具有較寬之視角，但銀幕之增益極差，僅於周遭其 他光源極弱時，才能看淸楚投射於其上之影像。第二型者 爲於金屬板外包覆有一層薄膜者，其銀幕之增益較佳，但 視角較小，故觀眾僅於相當有限之視角範圍內方可淸楚觀 察投射於其上之影像。 經濟部中央標準局員工消費合作社印製 (.請先閲讀背面之注意事項再填寫本頁) 爲消除前述習用投影機銀幕之缺點，於美國專利第 5,414,558號中，提出一種改良之投影機銀幕。如圖1所示， 此一投影機銀幕由具有凹柱面的反射面之金屬板所構成， 該反射面係水平方向平直，而鉛直方向具有弧度。採此一 投影機銀幕之設計，雖可獲得較前述第一型之習用投影機 銀幕爲高之增益，並具有較前述第二型之習用投影機銀幕 爲寬之水平方向視角，但其仍存在有如下之缺點： (一） 、鉛直方向視角較小，因爲銀幕之視角係與其增益成反 比例； (二） 、上下、左右之反射光均不夠均勻； (三） 、對比度不佳(黑白不夠分明）。 本發明之主要目的在針對前述各習用投影機銀幕之缺 點，而提供一種可將由投影機等光源所入射過來之光線(有 3 本紙浪尺度逋用中國國家橾隼（CNS ) Λ4規格（210/297公釐） 經濟部中央橾準局貝工消费合作社印製 203887 at B7 五、發明说明（） 用光線)之絕大部分予以逆反射回觀眾所在之投影機附近’ 並將來自周遭其他光源的光線(有害光線）之絕大部分予以 於吸收，俾提高投影機等所投射影像之對比的高對比銀幕 其自對準之製造方法。‘ 本發明另一目的在提供一種可加大銀幕之水平方向視角 的投影機銀幕。 本發明又一目的在提供一種可改善反射光之鉛直方向及 7JC平方向均勻性的投影機銀幕。 爲達成前述各目的，本發明之申請專利範圍第1項係關 於一種投影機用之高對比銀幕之自對準製造方法，包含如 下各步驟： 製作於正面具有多數之微透鏡之透明板片； 於該透明板片之背面塗覆一層正型白色紫外線感光劑； 將一紫外線光源置於該透明板片之正面側，且使該光源 與透明板片之位置關係，相當於將來使用時投影機對銀幕 之位置關係，該光源發出之紫外線經透明板片上之該多數 之微透鏡聚光照射於該白色正型紫外線感光劑之多數聚光 點’使該等聚光點硬化形成多數之白色反射區； 以溶齊淸洗該白色正型紫外線感光劑之未被紫外線照射 硬化之部分；及 在該等白色反射區間之空隙內塗覆以黑色基質。 ^ ’本發明之申請專利範圍第2項係關於一種投影機用 之闻對比銀幕之自對準製造方法，包含如下各步驟： 製作於正面具有多數之微透鏡之透明板片； -------^ 4 I 裝 订 線 (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度通川Τ囤國家榡準（cNS ) λ4規格（210Χ297公釐） 經濟部中央樣準局貝工消费合作社印製 A7 ______B7 五、發明説明（） 於該透明板片之背面塗覆一層負型黑色紫外線感光劑； 將一紫外線光源置於該透明板片之正面側，且使該光源 與透明板片之位置關係’相當於將來使用時投影機對銀幕 之位置關係，該光源發出之紫外線經透明板片上之該多數 之微透鏡聚光照射於該負型黑色紫外線感光劑之多數聚光 點，使該等聚光點溶化形成多數之空穴； 以溶劑淸洗該負型黑色紫外線感光劑之被溶化部分；及 在該等空穴內塗覆以白色反射材料，而形成多數白色反 射區。 又’本發明之申請專利範圍第3項係關於一種投影機用 之高對比銀幕之自對準製造方法，包含如下各步驟： 製作於正面具有多數之微透鏡之透明板片； 於該透明板片之背面塗覆一層負型黑色紫外線感光劑； 將一紫外線光源置於該透明板片之正面側，且使該光源 與透明板片之位置關係，相當於將來使用時投影機對銀幕 之位置關係，該光源發出之紫外線經透明板片上之該多數 之微透鏡聚光照射於該負型黑色紫外線感光劑之多數聚光 點，使該等聚光點溶化形成多數之空穴；及 以溶劑淸洗該負型黑色紫外線感光劑之被溶化部分。 又’本發明之申請專利範圍第4係關於一種投影機用之 高對比銀幕之自對準製造方法，包含如下各步驟： 製作於正面具有多數之微透鏡之透明板片； 將一偏光板之正面黏接於該透明板片之背面； 於該偏光板之與該透明板片相反側之背面塗覆一層正型 5 本紙張尺度適闵中國國家標準（CNS ) Λ4規格（210/2^7公釐） *' ---------^------ix------線. (請先閲讀背面之注意事項再填寫本頁) 經濟部中央搮準局貝工消费合作社印装 A7 B7 五、發明説明（） 白色紫外線感光劑； 將一紫外線光源置於該透明板片之正面側，且使該光源 與透明板片之位置關係，相當於將來使用時投影機對銀幕 之位置關係，該光源發出之紫外線經透明板片上之該多數 之微透鏡聚光照射於該白色正型紫外線感光劑之多數聚光 點，使該等聚光點硬化形成多數之白色反射區； 以溶劑淸洗該白色正型紫外線感光劑之未被紫外線照射 硬化之部分；及 在該等白色反射區間之空隙內塗覆以黑色基質。 又，本發明之申請專利範圍第5係關於一種投影機用之 高對比銀幕之自對準製造方法，包含如下各步驟： 製作於正面具有多數之微透鏡之透明板片； 將一偏光板之正面黏接於該透明板片之背面； 於該偏光板之與該透明板片相反側之背面塗覆一層負型 黑色紫外線感光劑； 將一紫外線光源置於該透明板片之正面側，且使該光源 與透明板片之位置關係，相當於將來使用時投影機對銀幕 之位置關係，該光源發出之紫外線經透明板片上之該多數 之微透鏡聚光照射於該負型黑色紫外線感光劑之多數聚光 點’使該等聚光點溶化形成多數之空穴； 以溶劑淸洗該負型黑色紫外線感光劑之被溶化部分；及 在該等空穴內塗覆以白色反射材料，而形成多數白色反 射區。 又’本發明之申請專利範圍第6係關於一種投影機用之 _____6____ 本紙張尺度適用^國國家榡準^阳^衫見格^⑴/:^公後) 裝 訂 線 (請先聞讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消费合作社印製 293887 A7 ______B7 _ 五、發明説明（） 高對比銀幕之自對準製造方法，包含如下各步驟： 製作於正面具有多數之微透鏡之透明板片； 將一偏光板之正面黏接於該透明板片之背面； 於該偏光板之與該透明板片相反側之背面塗覆一層負型 黑色紫外線感光劑； 將一紫外線光源置於該透明板片之正面側，且使該光源 與透明板片之位置關係，相當於將來使用時投影機對銀幕 之位置關係，該光源發出之紫外線經透明板片上之該多數 之微透鏡聚光照射於該負型黑色紫外線感光劑之多數聚光 點’使該等聚光點溶化形成多數之空穴；及 以溶劑淸洗該負型黑色紫外線感光劑之被溶化部分。 依本發明之申請專利範圍第7至12項係分別以多數 玻璃珠黏接於一透明板片之正面上以取代申請專利範圍第 1至6項中之正面具有多數之微透鏡之透明板片。 依本發明之申請專利範圍第13及14項，係於申請專利 範圍第1至12項之製程中，令該紫外線光源保持水平方向 左右移動或採用沿水平方向延伸之長條狀紫外線光源，俾 加長各聚光點沿水平方向之長度，而增大該銀幕之水平方 向之視角。 依本發明之申請專利範圍第15、16及17項，係關於依 申請專利範圍第1至14項之製程所製成之高對比銀幕。 本發明之其他特徵及其具體構造、功能、效果，將由以 下參考附圖對本發明之較佳實施例所爲之說明而得以更加 淸楚。右附帶說明者，在本發明說明書中所稱『正型』紫 ____7__ 本紙浪尺度逋用中國國家標準·（ CNS ) Λ4规格（210X297公ϋ I n I I I n I I I n I I I 訂 i I I 線 (請先閲讀背面之注意事項再填寫本頁) A7 B7 0. - .1A7 B7 5. Description of the invention () This invention relates to a high-contrast screen and its self-aligned manufacturing method. It is particularly related to a high-contrast screen that can retroreflect most of the useful light incident back to the audience and absorb most of the harmful light to improve the contrast of images projected by projectors and the like. The invention also relates to the aforementioned self-aligned manufacturing method of the high-contrast screen. There are two main types of conventional projector screens. The first type is a white screen, which has a wide viewing angle, but the gain of the screen is extremely poor. Only when the surrounding other light sources are very weak, can the image projected on it be viewed. The second type is a metal film coated with a thin film. The screen gain is better, but the viewing angle is small, so the viewer can only observe the image projected on it within a relatively limited viewing angle range. Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (Please read the precautions on the back before filling out this page). To eliminate the aforementioned shortcomings of conventional projector screens, an improved projector screen is proposed in US Patent No. 5,414,558. As shown in FIG. 1, the screen of this projector is composed of a metal plate having a reflective surface with a concave cylindrical surface, the reflective surface is straight in the horizontal direction and has a curvature in the vertical direction. With this projector screen design, although it can obtain a higher gain than the aforementioned first type conventional projector screen and has a wider horizontal viewing angle than the aforementioned second type conventional projector screen, it still exists It has the following disadvantages: (1), the viewing angle in the vertical direction is small, because the viewing angle of the screen is inversely proportional to its gain; (2), the reflected light of the top, bottom, left and right are not uniform enough; (3), the contrast is not good (black and white is not clear enough) ). The main purpose of the present invention is to provide a light that can be incident from a projector and other light sources (with 3 paper wave scales) using the Chinese National Falcon (CNS) Λ4 specification (210 / 297 mm) Printed by the Ministry of Economic Affairs, Central Bureau of Customs and Excise, Beigong Consumer Cooperative 203887 at B7. 5. Description of the invention () Using light) Most of it will be retro-reflected back to the projector where the audience is located 'and will come from other light sources around. Most of the light (harmful light) is absorbed to improve the self-alignment of high-contrast screens that increase the contrast of images projected by projectors and the like. ‘Another object of the present invention is to provide a projector screen that can increase the horizontal viewing angle of the screen. Another object of the present invention is to provide a projector screen that can improve the uniformity of the reflected light in the vertical direction and the 7JC flat direction. In order to achieve the foregoing objectives, item 1 of the patent application scope of the present invention relates to a self-aligned manufacturing method of a high-contrast screen for a projector, which includes the following steps: a transparent plate with a large number of micro lenses on the front; A positive white ultraviolet sensitizer is coated on the back of the transparent plate; an ultraviolet light source is placed on the front side of the transparent plate, and the positional relationship between the light source and the transparent plate is equivalent to a projector for future use With regard to the positional relationship of the screen, the ultraviolet rays emitted by the light source are condensed by the plurality of micro lenses on the transparent plate and irradiated to the plurality of spotlights of the white positive ultraviolet sensitizer to harden the spotlights to form a majority of white reflections Area; wash the part of the white positive ultraviolet sensitizer which is not hardened by ultraviolet irradiation with a solution; and coat the black matrix in the gaps of the white reflection sections. ^ 'The second item of the patent application scope of the present invention relates to a self-aligned manufacturing method of a contrast screen for a projector, which includes the following steps: a transparent plate with a large number of micro lenses on the front; ---- --- ^ 4 I binding line (please read the notes on the back before filling in this page) The paper size is Tongchuan T National Standard (cNS) λ4 specification (210Χ297mm) Ministry of Economic Affairs Central Sample Bureau Printed by the consumer cooperative A7 ______B7 V. Description of the invention () Apply a negative black ultraviolet sensitizer on the back of the transparent plate; place an ultraviolet light source on the front side of the transparent plate and make the light source and the transparent plate The positional relationship of the film is equivalent to the positional relationship of the projector to the screen when it is used in the future. The ultraviolet rays emitted by the light source are condensed by the majority of microlenses on the transparent plate and irradiated to the most condensed spots of the negative black ultraviolet sensitizer. Dissolve the condensing spots to form a large number of holes; wash the melted portion of the negative black ultraviolet sensitizer with a solvent; and coat the holes with a white reflective material to form The number of white reflective region. Also, the third item of the patent application scope of the present invention relates to a self-alignment manufacturing method of a high-contrast screen for a projector, which includes the following steps: a transparent plate with a large number of microlenses on the front side; A negative black ultraviolet sensitizer is coated on the back of the film; an ultraviolet light source is placed on the front side of the transparent plate, and the positional relationship between the light source and the transparent plate is equivalent to the position of the projector on the screen in future use Relationship, the ultraviolet rays emitted by the light source are condensed by the plurality of microlenses on the transparent plate and irradiated to the plurality of condensed spots of the negative black ultraviolet sensitizer, so that the condensed spots are melted to form a plurality of cavities; and the solvent Wash the melted part of the negative black ultraviolet sensitizer. Also, the fourth patent application scope of the present invention relates to a self-aligned manufacturing method of a high-contrast screen for a projector, which includes the following steps: a transparent plate with a large number of micro lenses on the front; a polarizer The front side is adhered to the back side of the transparent plate; the back side of the polarizing plate opposite to the transparent plate is coated with a layer of positive type 5 paper size suitable for China National Standards (CNS) Λ4 specification (210/2 ^ 7 Mm) * '--------- ^ ------ ix ------ line. (Please read the precautions on the back before filling out this page) Central Ministry of Economic Affairs A7 B7 printed by the industrial and consumer cooperative. V. Description of the invention () White ultraviolet sensitizer; place an ultraviolet light source on the front side of the transparent plate, and position the light source with the transparent plate, which is equivalent to projection in future use The positional relationship of the screen to the screen, the ultraviolet light emitted by the light source is condensed by the plurality of microlenses on the transparent plate and irradiated to the plurality of condensed spots of the white positive ultraviolet sensitizer, so that the condensed spots are hardened to form a majority of white Reflective area; wash the white positive shape with solvent UV irradiation of the non-hardened portion of the photosensitive agent outside; and a coating within the void space such as a white reflective black matrix. In addition, the fifth patent application scope of the present invention relates to a self-alignment manufacturing method of a high-contrast screen for a projector, which includes the following steps: a transparent plate with a large number of microlenses on the front; a polarizer The front side is adhered to the back side of the transparent plate; a negative black ultraviolet sensitizer is coated on the back side of the polarizing plate opposite to the transparent plate; a UV light source is placed on the front side of the transparent plate, and The positional relationship between the light source and the transparent plate is equivalent to the positional relationship between the projector and the screen in future use. The ultraviolet light emitted by the light source is condensed by the plurality of microlenses on the transparent plate to irradiate the negative black ultraviolet sensitizer The majority of condensing spots' melt the condensing spots to form a majority of holes; wash the melted portion of the negative black ultraviolet sensitizer with a solvent; and coat the holes with a white reflective material, and Most white reflection areas are formed. And 'the sixth of the patent application scope of the present invention relates to a projector used _____6____ This paper standard is applicable ^ National National Standard ^ Yang ^ shirt see grid ^ (/: ^ public) Binding line (please read the back first Note: Please fill out this page) 293887 A7 ______B7 _ printed by the Staff Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of the invention () The self-aligned manufacturing method of the high-contrast screen consists of the following steps: It is produced on the front with many micro The transparent plate of the lens; the front side of a polarizing plate is adhered to the back side of the transparent plate; the back side of the polarizing plate opposite to the transparent plate is coated with a layer of negative-type black ultraviolet sensitizer; an ultraviolet light source Placed on the front side of the transparent plate, and the positional relationship between the light source and the transparent plate is equivalent to the positional relationship of the projector to the screen in future use, and the ultraviolet light emitted by the light source passes through the majority of microlenses on the transparent plate Spotlight irradiates the plurality of light-concentrating spots of the negative-type black ultraviolet sensitizer to dissolve the light-concentrating spots to form a large number of holes; and wash the negative-type black-ultraviolet light sensitive with a solvent The dissolved part of the agent. Items 7 to 12 of the patent application scope according to the present invention are respectively a plurality of glass beads adhered to the front surface of a transparent plate to replace the transparent plates with a large number of microlenses on the front surface of the application scope of items 1 to 6 . According to items 13 and 14 of the patent application scope of the present invention, in the process of items 1 to 12 of the patent application scope, the ultraviolet light source is moved horizontally or left or right, or a long strip-shaped ultraviolet light source extending in the horizontal direction is used, so that Increase the length of each spotlight in the horizontal direction, and increase the horizontal viewing angle of the screen. Items 15, 16 and 17 of the patent application scope of the present invention are related to the high-contrast screen made by the process of the patent application items 1 to 14. Other features of the present invention, as well as its specific structure, functions, and effects, will be more apparent from the following description of preferred embodiments of the present invention with reference to the accompanying drawings. Attached to the right, the "positive" purple mentioned in the description of the present invention ____7__ This paper wave standard uses the Chinese National Standard (CNS) Λ4 specification (210X297 male ϋ I n III n III n III order i II line (please (Read the precautions on the back before filling out this page) A7 B7 0.-.1
/.X ι£ ··, I ·» 經濟部中央標準局員工消费合作社印裝 五、發明说明（） 外線感光劑係指受到紫外線之照射會硬化之紫外線感光 劑，『負型』紫外線感光劑則指受到紫外線之照射會溶化 之紫外線感光劑而言。 (圖示之簡單說明） 圖1爲一習用之投影機銀幕之立體圖； 圖2爲顯示依本發明一實施例之投影機之高對比銀幕之 構造及其使用情形的部分斷開放大剖面圖； 圖3A至3F顯示圖2所示之高對比銀幕之製造過程； 圖4A爲在圖3B所示之銀幕之半成品的立體圖； 圖4B爲用以輔助說明圖4A之銀幕半成品之構造的座標 系； 圖5爲顯示依本發明另一實施例之背投式投影機之高對 比銀幕之構造及其使用情形的部分斷開放大剖面圖； 圖6爲顯示依本發明又一實施例之投影機之高對比銀幕 之構造的部分放大立體圖； 圖7A至7F顯示圖6所示之高對比銀幕之製造過程；及 圖8爲顯示依本發明又再一實施例之投影機之高對比銀 幕之構造的部分放大剖面圖。 (較佳實施例之說明） 如圖2所示，依本發明之一實施例之高對比銀幕，主要 包括:一透明板片1，於其正面具有多數之微透鏡4，用以 將入射光匯聚於該透明板片1之背面處；多數白色反射材 料區2，形成於該透明板片1背面之各聚光點，用以將來 自投影機等有用之光源並被匯聚於該處之光的絕大部分予 8 ------------{裝一------订------1 沐 (請先閲讀背面之注意^項再填艿本頁) 本紙張尺度適用中國國家榡準（CNS ) A4規格（210X297公釐） 293887 85.1Π. A7 B7 五、發明説明（） 以逆反射回投影機等附近，俾投影機附近之觀眾可更淸楚 接收到來自投影機之影像；及黑色基質3，塡滿於該等白 色反射材料區2之間，用以將來自周遭其他光源的有害光 線(亦即其存在會降低欲接收影像之對比度)之絕大部分予 以於吸收，俾提高投影機等所投射影像之對比。如圖2所 示，若相鄰兩微透鏡4之節距均相同，則其對應之兩相鄰 白色反射材料區2之節距會自投影機射出光與銀幕直交之 點爲中心，往圖2中之上下兩側漸次增大，亦即若L1爲直 交於銀幕之入射光，而L2爲斜交於銀幕之入射光，則 D2>D1。 經濟部中史標準局負工消费合作社印裝 (請先閱讀背面之注意事項再填寫本頁) 其次，參考圖3A至3F，說明此一高對比銀幕之製造過 程。首先，將具可塑性之適當厚度之透明板片之材料1A， 以連續出料方式導入至一外周輪廓係由多數與前述微透鏡 4相同形狀之部分環繞周向延續形成之成形滾輪5和與此成 形滾輪5對向設置之加壓滾輪6之間。利用加壓滾輪6將 該材料1A向該成形滾輪5推壓，兩滾輪5、6並分別朝圖 中箭頭方向轉動，而於該材料1A之正面形成連續之微透鏡 4，且使材料1A朝圖中下方饋送。然後，此一形成有微透 鏡4之材料1A被截切成適當長度之透明板片〗(圖3B)。接 著’再於其背面塗覆以一層正型白色紫外線感光劑2A(圖 3C)。其次’如圖3D所示’將一紫外線光源10置於該透明 板片1之正面側，且使該光源10與透明板片1之位置關係， 相當於將來使用時投影機對銀幕之位置關係。亦即，如圖2 及圖3D相對照，若預定將來使用時投影機將置於銀幕前方 本紙張尺度適用中國國家標準（CNS ) A4規格（210x297公釐） 經濟部中央標準局貝工消費合作社印装 A7 B7 五、發明説明（） 距離s之處，則將該紫外線光源1〇置於該透明板片1之前 方距離s附近。如此，則該光源發出之紫外線即會經透 明板片1上之該多數之微透鏡4匯聚照射在位於適當位置 之多數聚光點，使該等聚光點硬化形成多數之白色反射材 料區2。其次，再用溶劑將未被紫外光照射而硬化部分之 感光劑2A溶化去除，僅留下白色反射材料區2(圖3E)。接 著，如圖3F所示，在該等白色反射材料區2之背後及其間 塗覆一層黑色基質3。如此’即形成圖2所示依本發明一 實施例之高對比銀幕。 須特別強調者，在前述高對比銀幕之製造過程之白色反 射材料區2形成步驟中，由於令該光源10與透明板片1之 位置關係，相當於將來使用時投影機對銀幕之位置關係， 故白色反射材料區2會被『自動對準』形成於『正確位置』， 此處所稱『正確位置』係指能將入射光循著與入射路線相 反之路線逆反射回投影機等有用光源處之位置。若不依前 述『自動對準』之方法，而欲以印刷方式將緊密鄰接且間 距各異之該極多數白色反射材料區2形成於透明板片1之 背面之『正確位置』殆爲不可能。此爲本發明之最大特徵。 圖4A顯示在圖3B所示之銀幕之半成品的立體圖，而圖 4B則爲用以說明其構造之座標系，其X、γ、z三軸分別 表示銀幕之寬度方向、長度方向及厚度方向。在前述實施 例中’微透鏡4爲柱面透鏡，亦即其曲率係沿X方向保持 不變’僅沿Y方向有變化。但該透明板片之製造亦可採用 沖壓等方式以取代圖3A利用成形滾輪5和與其對向設置之 __ 10 I------1T-------.^. (請先閱讀背面之注意事項再填寫本页) 本紙张尺度適用中國國家標準（CNS ) λ4規格（2丨0X297公釐） 經濟部中央標準局貝工消资合作社印装 293887 A7 _____B7_ 五、發明説明（） 加壓滾輪6之方式，以形成微透鏡4之曲率沿X方向亦有 變化之透明板片1(未圖示）。 圖5爲顯示依本發明另一實施例之背投式投影機之高對 比銀幕之構造及其使用情形的部分斷開放大剖面圖。 參考圖5，依本發明之另一實施例之高對比銀幕，係利 用於背投式投影機，主要包括:一透明板片1，於其正面具 有多數之微透鏡4用以將入射光匯聚於該透明板片1之背 面處；多數空穴7，形成於該透明板片1背面之各聚光點 處，用以讓來自投影機等有用之光源而匯聚於各該聚光點 處之光透過銀幕而射向銀幕背面之觀眾方向；及多數黑色 基質3，塡滿形成於該多數空穴7之間，用以將來自周遭 其他光源的有害光線(亦即其存在會降低欲接收影像之對比 度)之絕大部分予以於吸收，俾提高投影機等所投射影像之 對比。於本實施例中，該多數空穴7處亦可用透明材料塡 入以取代多數空穴。 圖6爲顯示依本發明又一實施例之投影機之高對比銀幕 之構造的部分放大立體圖。 參考圖6，依本發明之又另一實施例之高對比銀幕，係 對圖2所示之高對比銀幕進一步加以改良者，主要包括 透明板片1，於其正面具有多數之微透鏡4用以匯聚入射 光；一偏光板12，其正面藉由黏接劑11黏接於該透明板 片1之背面處，其設置目的容後補述；多數白色反射材# 區2，形成於位在該偏光板12背面之該等微透鏡4之各聚 光點處，用以將來自投影機等有用之光源並被匯聚於該處 _U_____ 本紙張尺度適用中國國家標準（CNS ) Λ4規格（210X 297公釐） ~ ----------装------1T------^ (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消费合作社印裝 A7 _B7___ 五、發明説明（） 之光的絕大部分予以逆反射回投影機等有用光源附近’俾 位於投影機附近之觀眾可更淸楚接收到來自投影機之影 像；及黑色基質3，塡滿於該等白色反射材料區2之間， 用以將來自周遭其他光源的有害光線(亦即其存在會降低欲 接收影像之對比度)之絕大部分予以於吸收，俾提高投影機 等所投射影像之對比。 茲說明前述偏光板12之設置目的。如吾人所知，每一偏 光板均具有互相直交之一吸收軸及一穿透軸。當偏極化(透 明板片〇la反射材料區ized)方向平行於吸收軸之光線經過 該偏光板時會被吸收，而當偏極化(透明板片〇la反射材料 區ized)方向平行於穿透軸之光線經過該偏光板時則被可直 接穿過。由於自一投影機出來之光線均已被偏極化，若吾 人令該偏光板12之穿透軸方向與來自投影機之光線的偏極 化方向一致，則該光線即可全部通過而達於偏光板之後 方，並由白色反射材料區2予以逆反射。另一方面，來自 周遭其他光源的有害光線則未朝同一方向被偏極化，亦即 其極化方向有一半平行於偏光板之吸收軸，另一半則平行 偏光板之穿透軸。因此，當此種有害光線經過該偏光板 後，有一半被吸收掉，而僅留存一半。故此一偏光板12之 增設有進一步提高銀幕之對比的效果。 其次，參考圖7A至7F，以說明圖6所示高對比銀幕之 製造過程。首先，將具可塑性之適當厚度之透明板片之材 料1A，以連續出料方式導入至一外周輪廓係由多數與前述 微透鏡4相同形狀之部分環繞周向延續形成之成形滾輪5 ____12._ 本紙張尺度適用中國國家橾準（CNS ) A4規格（210X 297公釐） 裝 訂 線 (請先閱讀背面之注意事項再填寫本頁) 經濟部中央梂準局員工消费合作社印1i A7 B7 '1 1 ---—--- "" 1一- _____ 五、發明説明（） 和與此成形滾輪5對向設置之第一加壓滚輪6之間。利用 加壓滚輪6將該材料1A向該成形滾輪5推壓，兩滾輪5、 6並分別朝圖中箭頭方向轉動，而於該材料1A之正面形成 連續之微透鏡4且使材料1A朝圖中下方饋送。在兩滾輪 5、6之下游適當處，另設有兩對向設置之第二加壓滾輪15 與第三加壓滾輪16，前述形成有連續之微透鏡4的材料i a 及正面塗覆有黏接劑11的偏光板12方別被導入至該第二 加壓滾輪15與第三加壓滾輪16之間，利用兩滾輪15與16 自兩側施壓，並藉由黏接劑11的黏結力而使材料1A與偏 光板12結合在一起。其後，再加以截切成適當長度(圖7B)。 接著’再於其背面塗覆以一層正型白色紫外線感光劑2A(圖 7C)。其次，如圖7D所示，將一紫外線光源置於該透明 板片1之正面側，且使該光源10與透明板片1之位置關係， 相當於將來使用時投影機對銀幕之位置關係。如此，則該 光源10發出之紫外線即會經透明板片1上之該多數之微透 鏡4匯聚照射在位於P112背面適當位置之多數聚光點，使 該等聚光點硬化形成多數之白色反射材料區2。其次，再 用溶劑將未被紫外光照射而硬化部分之感光劑2A溶化去 除，僅留下白色反射材料區2(圖7E)。接著，如圖7F所示， 在該等白色反射材料區2之背後及其間塗覆一層黑色基質 3。如此，即形成圖6所示之高對比銀幕。/.X ι £ ··, I · »Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of the invention () External sensitizer refers to the ultraviolet sensitizer that will be hardened by the irradiation of ultraviolet ray," negative "ultraviolet sensitizer It refers to the ultraviolet sensitizer that will melt when irradiated by ultraviolet rays. (Simple illustration of the illustration) Fig. 1 is a perspective view of a conventional projector screen; Fig. 2 is a partially broken enlarged cross-sectional view showing the structure and usage of a high-contrast screen of a projector according to an embodiment of the present invention; 3A to 3F show the manufacturing process of the high-contrast screen shown in FIG. 2; FIG. 4A is a perspective view of the semi-finished product of the screen shown in FIG. 3B; FIG. 4B is a coordinate system used to help explain the structure of the semi-finished product of FIG. 4A; 5 is a partially broken enlarged cross-sectional view showing the structure of a high-contrast screen of a rear projection projector according to another embodiment of the present invention and its use situation; FIG. 6 is a diagram showing a projector according to another embodiment of the present invention; A partially enlarged perspective view of the structure of the high-contrast screen; FIGS. 7A to 7F show the manufacturing process of the high-contrast screen shown in FIG. 6; and FIG. 8 shows the structure of the high-contrast screen of the projector according to yet another embodiment of the present invention. Partially enlarged sectional view. (Description of the preferred embodiment) As shown in FIG. 2, the high-contrast screen according to an embodiment of the present invention mainly includes: a transparent plate 1 having a plurality of microlenses 4 on the front side thereof for directing incident light Converged on the back of the transparent plate 1; most of the white reflective material area 2 is formed at each light-concentrating point on the back of the transparent plate 1 to collect useful light sources from projectors and the like and converge the light there The vast majority of it is 8 ------------ {装 一 ------ 定 ------ 1 MU (please read the note ^ on the back first and then fill this page ) This paper scale is applicable to China National Standard (CNS) A4 specification (210X297mm) 293887 85.1Π. A7 B7 V. Description of invention () Back to the projector etc. by retro-reflection, the audience near the projector can be more discerning Received the image from the projector; and the black matrix 3, filled between the white reflective material areas 2, for the harmful light from other surrounding light sources (that is, its presence will reduce the contrast of the image to be received) Most of them are absorbed to improve the contrast of images projected by projectors and so on. As shown in Fig. 2, if the pitch of two adjacent microlenses 4 is the same, the pitch of the corresponding two adjacent white reflective material areas 2 will be the center of the point where the light emitted from the projector and the screen intersect perpendicularly. The upper and lower sides of 2 increase gradually, that is, if L1 is the incident light that is perpendicular to the screen, and L2 is the incident light that is diagonal to the screen, then D2> D1. Printed by the Consumer Labor Cooperative of the Bureau of Chinese History and Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page) Secondly, refer to Figures 3A to 3F to illustrate the manufacturing process of this high-contrast screen. First, the material 1A of a transparent plate with a suitable thickness of plasticity is continuously discharged into an outer peripheral contour of a forming roller 5 which is formed continuously by a portion of the same shape as the aforementioned microlens 4 around the circumferential direction. The forming roller 5 is arranged between the pressing rollers 6 facing each other. The material 1A is pressed against the forming roller 5 by the pressing roller 6, and the two rollers 5, 6 are respectively rotated in the direction of the arrow in the figure, and a continuous microlens 4 is formed on the front surface of the material 1A, and the material 1A is directed toward Feed in the lower part of the picture. Then, the material 1A on which the microlens 4 is formed is cut into transparent plates of an appropriate length (FIG. 3B). Next, a layer of positive white ultraviolet sensitizer 2A is coated on the back surface (Fig. 3C). Secondly, as shown in FIG. 3D, an ultraviolet light source 10 is placed on the front side of the transparent plate 1, and the positional relationship between the light source 10 and the transparent plate 1 is equivalent to the positional relationship of the projector to the screen in future use . That is, as shown in the comparison of Figure 2 and Figure 3D, if the projector will be placed in front of the screen when it is scheduled to be used in the future, the paper standard is applicable to the Chinese National Standard (CNS) A4 specification (210x297mm) Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs Printing A7 B7 V. Description of the invention () At the distance s, the ultraviolet light source 10 is placed near the distance s in front of the transparent plate 1. In this way, the ultraviolet light emitted by the light source will be condensed and irradiated by the plurality of microlenses 4 on the transparent plate 1 to the plurality of condensed spots at appropriate positions, so that the condensed spots are hardened to form a plurality of white reflective material regions 2 . Next, a solvent is used to dissolve and remove the sensitizer 2A that has not been irradiated by ultraviolet light, leaving only the white reflective material region 2 (Fig. 3E). Next, as shown in Fig. 3F, a black matrix 3 is coated behind and between the white reflective material regions 2. In this way, a high-contrast screen according to an embodiment of the present invention shown in FIG. 2 is formed. It should be particularly emphasized that, in the step of forming the white reflective material region 2 in the manufacturing process of the high-contrast screen described above, since the positional relationship between the light source 10 and the transparent plate 1 is equivalent to the positional relationship between the projector and the screen in future use, Therefore, the white reflective material area 2 will be formed in the "correct position" by "auto-alignment". The "correct position" here means that the incident light can be reflected back to the projector and other useful light sources along the route opposite to the incident route. The location. If the “auto-alignment” method described above is not used, it is impossible to form the most right-adjacent white reflective material regions 2 in the “right position” on the back of the transparent plate 1 by printing. This is the biggest feature of the present invention. Fig. 4A shows a perspective view of the semi-finished product of the screen shown in Fig. 3B, and Fig. 4B is a coordinate system for explaining its structure, and its X, γ, and z axes represent the width, length, and thickness directions of the screen, respectively. In the foregoing embodiment, the 'microlens 4 is a cylindrical lens, that is, its curvature remains constant in the X direction', and only changes in the Y direction. However, the manufacturing of the transparent plate can also be stamped, etc. instead of using the forming roller 5 in FIG. 3A and the opposite set __ 10 I ------ 1T -------. ^. (Please Please read the precautions on the back and then fill out this page) This paper scale is applicable to the Chinese National Standard (CNS) λ4 specification (2 丨 0X297mm) Printed by 293887 A7 _____B7_ of the Central Standards Bureau of the Ministry of Economic Affairs _____B7_ ) The method of pressing the roller 6 is to form a transparent plate 1 (not shown) whose curvature of the microlens 4 also changes along the X direction. Fig. 5 is a partially broken enlarged cross-sectional view showing the structure and use of a high-contrast screen of a rear projection projector according to another embodiment of the present invention. Referring to FIG. 5, a high-contrast screen according to another embodiment of the present invention is used in a rear-projection projector, which mainly includes: a transparent plate 1 with a plurality of micro lenses 4 on the front thereof for converging incident light At the back of the transparent plate 1; a plurality of cavities 7 are formed at each condensing point on the back of the transparent plate 1 to allow useful light sources from projectors and the like to converge at each condensing point The light is transmitted through the screen to the direction of the viewer on the back of the screen; and most of the black matrix 3 is formed between the majority of the holes 7 to remove harmful light from other surrounding light sources (that is, its presence will reduce the desire to receive images Most of the contrast) is absorbed, so as to improve the contrast of the image projected by the projector. In this embodiment, the plurality of holes 7 can also be filled with a transparent material to replace the majority of holes. 6 is a partially enlarged perspective view showing the structure of a high-contrast screen of a projector according to still another embodiment of the present invention. Referring to FIG. 6, a high-contrast screen according to yet another embodiment of the present invention further improves the high-contrast screen shown in FIG. 2, mainly including a transparent plate 1 with a plurality of micro lenses 4 on the front To condense incident light; a polarizing plate 12, the front side of which is adhered to the back side of the transparent plate 1 by an adhesive 11, the purpose of which will be described later; most white reflective material # area 2, formed in The condensing points of the microlenses 4 on the back of the polarizing plate 12 are used to converge useful light sources from projectors and other places_U_____ This paper scale is applicable to China National Standard (CNS) Λ4 specifications (210X 297mm) ~ ---------- installed ------ 1T ------ ^ (please read the precautions on the back before filling this page) Employee consumption of the Central Standards Bureau of the Ministry of Economic Affairs Printed by the cooperative A7 _B7___ V. Description of the invention () Most of the light will be retro-reflected back to the vicinity of the projector and other useful light sources. Audiences who are near the projector can more easily receive images from the projector; and the black matrix 3. It is filled between the white reflective material areas 2 Other sources of harmful rays (i.e., the presence of which will reduce the contrast of an image to be received) to be the majority of the absorbent, serve to improve the contrast of the projector, the projected image. The purpose of the polarizing plate 12 described above is explained. As I know, each polarizing plate has an absorption axis and a penetration axis that are orthogonal to each other. Light polarized (transparent plate 〇la reflective material area ized) direction parallel to the absorption axis will be absorbed when passing through the polarizing plate, and when polarized (transparent plate 〇la reflective material area ized) direction is parallel to When the light passing through the axis passes through the polarizing plate, it can be directly passed through. Since the light from a projector has been polarized, if we make the direction of the axis of polarization of the polarizing plate 12 coincide with the direction of polarization of the light from the projector, then the light can pass through and reach Behind the polarizer, it is retro-reflected by the white reflective material area 2. On the other hand, the harmful light from other surrounding light sources is not polarized in the same direction, that is, half of its polarization direction is parallel to the absorption axis of the polarizer, and the other half is parallel to the transmission axis of the polarizer. Therefore, when such harmful light passes through the polarizing plate, half is absorbed and only half is retained. Therefore, an additional polarizing plate 12 is provided to further improve the contrast of the screen. Next, referring to FIGS. 7A to 7F, the manufacturing process of the high-contrast screen shown in FIG. 6 will be described. First, the material 1A of a transparent plate with a suitable thickness and a plasticity is continuously discharged into an outer peripheral contour of a forming roller 5 which is formed continuously by a portion of the same shape as the aforementioned microlens 4 around the circumferential direction ____ 12._ The paper size is applicable to China National Standard (CNS) A4 (210X 297mm) binding line (please read the precautions on the back before filling in this page). Printed by the Ministry of Economic Affairs, Central Bureau of Economics and Management Employees Cooperative Cooperative 1i A7 B7 '1 1 -------- " " 1 一-_____ 5. Description of the invention () Between the first pressure roller 6 provided opposite to this forming roller 5. The material 1A is pressed against the forming roller 5 by the pressing roller 6, and the two rollers 5, 6 respectively rotate in the direction of the arrow in the figure, and a continuous microlens 4 is formed on the front of the material 1A and the material 1A is directed toward the figure Feed in the middle and bottom. At a suitable place downstream of the two rollers 5 and 6, there are two second pressing rollers 15 and a third pressing roller 16 which are arranged opposite to each other. The material ia on which the continuous microlens 4 is formed and the front surface are coated with adhesive The polarizing plate 12 of the adhesive 11 is separately introduced between the second pressing roller 15 and the third pressing roller 16, and is pressed by the two rollers 15 and 16 from both sides, and is bonded by the adhesive 11 The material 1A is combined with the polarizing plate 12 by force. Thereafter, it is cut to an appropriate length (Fig. 7B). Next, a layer of positive white ultraviolet sensitizer 2A is coated on the back surface (Fig. 7C). Next, as shown in FIG. 7D, an ultraviolet light source is placed on the front side of the transparent plate 1, and the positional relationship between the light source 10 and the transparent plate 1 corresponds to the positional relationship of the projector to the screen in future use. In this way, the ultraviolet rays emitted by the light source 10 will be condensed and irradiated by the plurality of microlenses 4 on the transparent plate 1 to the plurality of condensing spots located at the appropriate positions on the back of P112, so that the condensing spots are hardened to form a majority of white reflections Material Zone 2. Secondly, the solvent is used to dissolve and remove the photosensitive part 2A which has not been irradiated by ultraviolet light, leaving only the white reflective material region 2 (Fig. 7E). Next, as shown in FIG. 7F, a layer of black matrix 3 is coated behind and between the regions 2 of white reflective material. In this way, the high-contrast screen shown in FIG. 6 is formed.
圖8爲顯示依本發明又再一實施例之投影機之高對比銀 幕之構造的部分放大剖面圖。此一高對比銀幕，主要包括: 一平板狀之透明板片21 ;多數之玻璃珠22，藉由黏接齊[J _ 15___ 本紙張尺度逋用中國國家橾準（CNS ) A4規格（210X297公釐） ---------^------,訂-------# (請先閲讀背面之注意事項再填寫本頁) 經濟部中央揉隼局貝工消費合作社印装 A7 _____ B7 五、發明説明（） 23黏接於該透明板片21之正面處，用以將入射光予以匯 聚；多數白色反射材料區2，形成於該多數之玻璃珠22之 各聚光點處，其設置目的與前述者相同；及黑色基質3， 塡滿於該等白色反射材料區2之間，其設置目的亦與前述 者相同。 其次，說明圖8所示高對比銀幕之製造過程。首先，利 用黏接劑23將多數適當大小之玻璃珠22黏接於一透明板 片21之正面處，並加以截切成適當長度，此一適當長度之 材料的作用與圖3B所示者相同。其後之製造步驟亦與圖3C 至圖3F完全相同，故不予贅述。 又，爲增大本發明之高對比銀幕的水平方向視角，於白 色反射材料區2形成過程中，吾人可採用水平向爲長條狀 之紫外線光源10，或令該紫外線光源、10保持沿水平向左 右移動，如此即可使所形成之白色反射材料區2加長，來 自投影機之入射光自可被反射至較大之水平視角範圍。 以上，係就本發明之數個較佳實施例加以描述， 該等實施例僅係用來說明而非限制本發明。在不脫離本發 明之實質內容之範疇內仍可予以變化而加以實施，此等變 化仍應屬本發明之範圍。例如，於前述各實施例所述高對 比銀幕之製造方法中，雖均採取先於偏光板或偏光板1之 背面塗覆一層正型白色紫外線光劑，以紫外線照射使其於 適當位置硬化並形成白色反射材料區後，以溶劑將未硬化 部分去除，最後再塗覆黑色基質。然而，吾人亦可先於偏 光板或偏光板1之背面塗覆一層負型黑色紫外線感光劑， 一 Η ——:-------1------ir------.^ (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標羋< CNS > Λ4规格（210 X297公釐〉 A7 B7 ___ 五、發明説明（） 以紫外線照射使其於適當位置溶化，以溶劑將該溶化部分 去除以於適當位置硬形成多數空穴，最後再將白色反射材 料充塡於該等空穴中，而得到構造及功能與前述各實施例 完全相同之高對比銀幕。因此，本發明之範疇係由以下之 申請專利範圍所界定。 裝 訂 ^ 線 (請先閱讀背面之注意事項再填寫本頁) 經濟部中央樣準局貝工消费合作社印製 本紙浪尺度適用中國國家榡率（CNS) M規格（2丨〇乂297公廣）8 is a partially enlarged cross-sectional view showing the structure of a high-contrast screen of a projector according to still another embodiment of the present invention. This high-contrast screen mainly includes: a flat plate-shaped transparent plate 21; most of the glass beads 22 are adhered together [J _ 15___ This paper standard uses the Chinese National Standard (CNS) A4 specification (210X297 Ali) --------- ^ ------, order ------- # (please read the precautions on the back before filling out this page) Ministry of Economic Affairs Central Falcon Bureau shellfish consumption Cooperative cooperative printing A7 _____ B7 V. Description of invention () 23 is adhered to the front of the transparent plate 21 to collect incident light; most of the white reflective material area 2 is formed in each of the plurality of glass beads 22 At the condensing point, the setting purpose is the same as the foregoing; and the black matrix 3, which is filled between the white reflective material regions 2, has the same setting purpose as the foregoing. Next, the manufacturing process of the high-contrast screen shown in FIG. 8 will be explained. First, the most suitable glass beads 22 are adhered to the front of a transparent plate 21 with an adhesive 23, and cut to an appropriate length. The function of this appropriate length of material is the same as that shown in FIG. 3B . The subsequent manufacturing steps are also the same as those in FIGS. 3C to 3F, so they will not be repeated here. In addition, in order to increase the horizontal viewing angle of the high-contrast screen of the present invention, during the formation of the white reflective material area 2, one can use a horizontally elongated ultraviolet light source 10, or keep the ultraviolet light source 10 at a horizontal level Move to the left and right, so that the formed white reflective material area 2 is lengthened, and the incident light from the projector can be reflected to a larger horizontal viewing angle range. The above is a description of several preferred embodiments of the present invention. These embodiments are only used to illustrate but not limit the present invention. Changes can be implemented without departing from the substance of the invention, and such changes should still fall within the scope of the invention. For example, in the manufacturing method of the high-contrast screen described in the foregoing embodiments, a positive white ultraviolet light agent is coated on the back of the polarizing plate or polarizing plate 1, and the ultraviolet light is irradiated to harden it in place and After the white reflective material area is formed, the unhardened portion is removed with a solvent, and finally the black matrix is coated. However, we can also apply a negative black ultraviolet sensitizer to the back of the polarizer or polarizer 1, Η ——: ------- 1 ------ ir ----- -. ^ (Please read the precautions on the back before filling in this page) This paper size is applicable to the Chinese national standard < CNS > Λ4 specification (210 X297 mm) A7 B7 ___ 5. Description of the invention () It dissolves in a proper position, removes the melted portion with a solvent to hardly form a large number of cavities in a suitable location, and finally fills the cavities with white reflective materials, and the structure and function are exactly the same as in the previous embodiments High contrast screen. Therefore, the scope of the present invention is defined by the scope of the following patent applications. Binding ^ Line (please read the precautions on the back before filling this page) Printed this paper by the Beige Consumer Cooperative of the Central Sample Bureau of the Ministry of Economic Affairs The wave scale is applicable to the Chinese National Standard Rate (CNS) M specification (2 丨 〇 297 public broadcasting)